Clinical Practice Guideline for the Evaluation and Treatment of Children and Adolescents With Obesity | Pediatrics | American Academy of Pediatrics

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From the American Academy of Pediatrics | Clinical Practice Guideline | January 09 2023

Sarah E. Hampl, MD, FAAP ;

a Children’s Mercy Kansas City Center for Children’s Healthy Lifestyles & Nutrition, University of Missouri-Kansas City School of Medicine, Kansas City, Missouri

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Sandra G. Hassink, MD, FAAP ;

Sandra G. Hassink, MD, FAAP

b Medical Director, American Academy of Pediatrics, Institute for Healthy Childhood Weight, Wilmington, Delaware

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Asheley C. Skinner, PhD ;

c Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina

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Sarah C. Armstrong, MD, FAAP ;

Sarah C. Armstrong, MD, FAAP

d Departments of Pediatrics and Population Health Sciences, Duke Clinical Research Institute, Duke University, Durham, North Carolina

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Sarah E. Barlow, MD, MPH, FAAP ;

Sarah E. Barlow, MD, MPH, FAAP

e Department of Pediatrics, University of Texas Southwestern Medical Center, Children’s Medical Center of Dallas, Dallas, Texas

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Christopher F. Bolling, MD, FAAP ;

Christopher F. Bolling, MD, FAAP

f Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio

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Kimberly C. Avila Edwards, MD, FAAP ;

Kimberly C. Avila Edwards, MD, FAAP

g Children’s Health Policy & Advocacy, Ascension; Department of Pediatrics, Dell Medical School at The University of Texas at Austin, Austin, Texas

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Ihuoma Eneli, MD, MS, FAAP ;

Ihuoma Eneli, MD, MS, FAAP

h Department of Pediatrics, The Ohio State University, Center for Healthy Weight and Nutrition, Nationwide Children’s Hospital, Columbus, Ohio

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Robin Hamre, MPH ;

i Centers for Disease Control and Prevention; Atlanta, Georgia

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Madeline M. Joseph, MD, FAAP ;

Madeline M. Joseph, MD, FAAP

j Division of Pediatric Emergency Medicine, Department of Emergency Medicine, University of Florida College of Medicine–Jacksonville, University of Florida Health Sciences Center–Jacksonville, Jacksonville, Florida

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Eneida Mendonca, MD, PhD, FAAP ;

Eneida Mendonca, MD, PhD, FAAP

l Departments of Pediatrics and Biostatistics & Health Data Science, Indiana University School of Medicine, Indianapolis, Indiana

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Marc P. Michalsky, MD, MBA, FAAP ;

Marc P. Michalsky, MD, MBA, FAAP

m Department of Pediatric Surgery, The Ohio State University, College of Medicine, Nationwide Children’s Hospital, Columbus, Ohio

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Nazrat Mirza, MD, ScD, FAAP ;

Nazrat Mirza, MD, ScD, FAAP

n Children’s National Hospital, George Washington University, Washington, DC

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Eduardo R. Ochoa, Jr, MD, FAAP ;

Eduardo R. Ochoa, Jr, MD, FAAP

o Department of Pediatrics, University of Arkansas for Medical Sciences, Arkansas Children’s Hospital, Little Rock, Arkansas

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Mona Sharifi, MD, MPH, FAAP ;

Mona Sharifi, MD, MPH, FAAP

p Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut

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Amanda E. Staiano, PhD, MPP ;

Amanda E. Staiano, PhD, MPP

q Louisiana State University Pennington Biomedical Research Center, Baton Rouge, Louisiana

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Ashley E. Weedn, MD, MPH, FAAP ;

Ashley E. Weedn, MD, MPH, FAAP

r Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma

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Susan K. Flinn, MA ;

s Medical Writer/Consultant, Washington, DC

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Jeanne Lindros, MPH ;

t American Academy of Pediatrics, Itasca, Illinois

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Kymika Okechukwu, MPA

u American Academy of Pediatrics, Itasca, Illinois

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FUNDING: No external funding.

FINANCIAL/CONFLICT OF INTEREST DISCLOSURES: An Independent review for bias was completed by the American Academy of Pediatrics. Dr Barlow has disclosed a financial relationship with the Eunice Kennedy Shriver National Institute of Child Health and Human Development as a co-investigator.

Citation

Sarah E. Hampl, Sandra G. Hassink, Asheley C. Skinner, Sarah C. Armstrong, Sarah E. Barlow, Christopher F. Bolling, Kimberly C. Avila Edwards, Ihuoma Eneli, Robin Hamre, Madeline M. Joseph, Doug Lunsford, Eneida Mendonca, Marc P. Michalsky, Nazrat Mirza, Eduardo R. Ochoa, Mona Sharifi, Amanda E. Staiano, Ashley E. Weedn, Susan K. Flinn, Jeanne Lindros, Kymika Okechukwu; Clinical Practice Guideline for the Evaluation and Treatment of Children and Adolescents With Obesity. Pediatrics 2023; e2022060640. 10.1542/peds.2022-060640

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Greetings

You have in your hands, or at your fingertips, the first edition of the American Academy of Pediatrics clinical practice guideline for evaluation and management of children and adolescents with overweight and obesity. Putting together this guideline was no small task, and the Academy is grateful to the efforts of all the professionals who contributed to the production of this document. This work is a true testament to their passion and dedication to combatting childhood and adolescent overweight and obesity.

The Subcommittee responsible for developing this guideline comprises a diverse group of professionals from a variety of disciplines representing both governmental entities and private institutions. Experts all, they are united by a common desire to provide the finest, most effective care and treatment to children and adolescents with overweight and obesity. Over the course of several months, the members of the Subcommittee reviewed the technical reports produced from the study review, then worked in concert to develop the Key Action Statements and Expert Consensus Recommendations contained within this guideline. These were crafted with meticulous care by the Subcommittee members, to align with current literature and to place appropriate emphasis on each statement.

While representing such a broad spectrum of perspectives, the members of this committee are all keenly aware of the multitude of barriers to treatment that patients and their families face. These barriers impact not only their access to treatment, but their ability to follow prescribed treatment plans. Whereas some patients are able to adopt the lifestyle changes and habitualize elements of their prescribed treatment plans, so many others struggle to do so for a wide variety of reasons. The members of the Subcommittee understand all of this. To assist with optimizing health equity and overcoming these barriers, guidance on a number of multilevel factors related to barriers to treatment have been included in this guideline. During the course of their work, members of the Subcommittee acknowledged that, although so much has been learned to advance the treatment of children and adolescents with overweight and obesity, there is still so much we have yet to discover. The Subcommittee recognizes the importance that future studies will play in advancing our knowledge and understanding of this chronic disease, knowledge and understanding that will lead to the development of new and more effective treatments. Specific discussion about the needs for future research are included in the guideline.

It is the fervent hope of every member of the Subcommittee that this guideline and the resources that accompany it will provide you with a more complete understanding of the issues, factors, and needs of patients combating overweight and obesity, as well as successful treatment options to assist them in their battle. This guideline and the resources that accompany it are not only for you, they are because of you, and all that you do to care for each and every patient as if they were the most important one. Because, as we all know, they are.

Be well,

Doug Lunsford, Family Representative

I. Introduction

The current and long-term health of 14.4 million children and adolescents is affected by obesity,1,2  making it one of the most common pediatric chronic diseases.35  Long stigmatized as a reversible consequence of personal choices, obesity has complex genetic, physiologic, socioeconomic, and environmental contributors. As the environment has become increasingly obesogenic, access to evidence-based treatment has become even more crucial.

A significant milestone in the fight to counter misperceptions about obesity and its causes occurred in 1998, when the National Institutes of Health (NIH) designated obesity as a chronic disease. The NIH made a further commitment to necessary research in the “Strategic Plan for NIH Obesity Research,” released by the NIH Obesity Task Force in 2011.6  In 2013, on the basis of accumulating evidence, the American Medical Association recognized obesity as a complex, chronic disease that requires medical attention.7 

The scientific and medical community’s understanding of obesity is constantly evolving. Increased understanding of the impact of social determinants of health (SDoHs, see Definition of Terms section) on the chronic disease of obesity—along with heightened appreciation of the impact of the chronicity and severity of obesity comorbidities—has enabled broader and deeper understanding of the complexity of both obesity risk and treatment.8,9  Multiple randomized controlled trials and comparative effectiveness studies have yielded effective treatment strategies, demonstrating that, despite the complex nature of this disease, obesity treatment can be successful.10,11 

The knowledge and skills to treat childhood obesity have become necessities for clinical teams in pediatric primary and subspecialty care. For more than 2 decades, the American Academy of Pediatrics (AAP) and its members have had the opportunity to collaborate with multiple scientific and professional organizations to improve the clinical care of children with overweight and obesity. Notable milestones include the 1998 “Expert Committee Recommendations,”12  the 2007 “Expert Committee Recommendations,”1315  the creation of the AAP Section on Obesity and founding of the Institute for Healthy Childhood Weight, both in 2013; and the Institute’s “Algorithm for the Assessment and Management of Childhood Obesity” in 2016.16 

This is the AAP’s first clinical practice guideline (CPG) outlining evidence-based evaluation and treatment of children and adolescents with overweight and obesity.

This guideline does not cover the prevention of obesity, which will be addressed in a forthcoming AAP policy statement.

The CPG also does not include guidance for overweight and obesity evaluation and treatment of children younger than 2 years. Children under the age of 2 were not part of the inclusion criteria for the evidence review, because it is difficult to practically define and measure excess adiposity in this age group. The CPG also does not discuss primary obesity prevention, as no studies reporting results of obesity prevention interventions met the inclusion criteria for the evidence review.

Nonetheless, the topics of obesity prevention and evaluation and treatment of children younger than 2 years are very important to reduce this threat to children’s current and future health. Future CPGs may include these topics; in the meantime, information that may assist pediatricians and other pediatric health care providers (PHCPs) is included on the AAP Institution for Healthy Childhood Weight’s Web site (aap.org/obesitycpg). Further information on the CPG’s methodology and the writing committee’s approach is covered in subsequent sections.

The CPG contains Key Action Statements (KASs), recommendations based on evidence from randomized controlled and comparative effectiveness trials as well as high-quality longitudinal and epidemiologic studies. The CPG writing Subcommittee uses the term “pediatricians and other pediatric health care providers” to include both pediatric primary and specialty care physicians and other medical providers as well as allied health care professionals, since all will encounter and can intervene with children with overweight, obesity, and obesity-related comorbidities. An algorithm with these KASs is provided in Appendix 1.

The KASs are supplemented by Consensus Recommendations that are based on expert opinion and address issues that were not part of the supporting technical reports (TRs). These consensus recommendations are supported by AAP-endorsed guidelines, clinical guidelines, and/or position statements from professional societies in the field and an extensive literature review.

This CPG stands on the shoulders of the pediatricians, other PHCPs, clinical researchers, and other stakeholders who collaborated to create the previous Expert Recommendations, which have been valued sources of guidance for health care professionals, clinical systems, parents, and other key stakeholders. It is our hope that this CPG will further advance the equitable care of children and adolescents with this chronic disease.

II. Approach

Childhood obesity results from a multifactorial set of socioecological, environmental, and genetic influences that act on children and families. Individuals exposed to adversity can have alterations in immunologic, metabolic, and epigenetic processes that increase risk for obesity by altering energy regulation.1719  These influences tend to be more prevalent among children who have experienced negative environmental and SDoHs, such as racism.20  Overweight and obesity are more common in children who live in poverty,21,22  children who live in underresourced communities,23  in families that have immigrated,24  or in children who experience discrimination or stigma.2532  As such, obesity does not affect all population groups equally.33  This fact highlights the importance of understanding the role of SDoHs34  as well as the social context of children and their families in the etiology and treatment of overweight and obesity.

Children with overweight and obesity benefit from health behavior and lifestyle treatment, which is a child-focused, family-centered, coordinated approach to care, coordinated by a patient-centered medical home, and may involve pediatricians, other pediatric health care providers (such as registered dietitian nutritionists [RDNs], psychologists, nurses, exercise specialists, and social workers), families, schools, communities, and health policy.35  Obesity is long-lasting and has persistent and negative health effects, attributable morbidity and mortality, and social and economic consequences that can impact a child’s quality of life.3639  Because obesity is a chronic disease with escalating effects over time, a life course approach to identification and treatment should begin as early as possible and continue longitudinally through childhood, adolescence, and young adulthood, with transition into adult care.36,3941 

A. Health Equity Considerations

It is not uncommon for the differences in disease prevalence and outcomes among population groups to be described in terms of ethnicity, race, gender, and/or age and for these differences to be referred to as “disparities.”42  Disparity, however, only defines differences between groups without referring to inequities that cause these differences among populations (ie, “economic, civil-political, cultural, or environmental conditions that are required to generate parity and equality”42 ). Precisely because of the intertwining of inequities throughout the life course, health disparities can be found from maternal pregnancy outcomes through adolescence and, as such, can have an inevitable impact on childhood obesity.

This distinction between health disparities and inequities is particularly important when considering chronic disease, because: (1) obesity risk factors are embedded in the socioecological and environmental fabric of children’s lives; and (2) there is a danger of stigmatizing children with obesity and their families on the basis of race and ethnicity, age, and gender based on the disparities of outcome—with failure to recognize the systemic challenges that cause and maintain inequities.43,44 

Inequities are often associated with each other45  and result in disparities in obesity risk and outcomes across the socioecological spectrum. Importantly, they represent neighborhood-, community-, and population-level factors that can be changed.46  Inequities that promote obesity in childhood can have a longitudinal effect leading to disparities in adult health and contributing to adult obesity and chronic disease.47 

The AAP is dedicated to reducing health disparities and increasing health equity for all children and adolescents.28  Attainment of these goals requires addressing inequities in available resources and systemic barriers to quality health care services for children with obesity.48  To that end, “practice standards must evolve to support an equity-based practice paradigm” and payment strategies must promote this approach to care.28 

It is our hope that individual clinical encounters with patients and families will provide opportunities to “screen and address the social, economic, educational, environmental, and personal-capital needs of the children with obesity and their families.”49  In addition, understanding the wider determinants of the chronic disease of obesity will enable pediatricians and other PHCPs to “raise awareness of the relevance of these social and environmental determinants of childhood obesity in their communities.”49 

B. Racism

Racism as an SDoH has been defined as a “system of structuring opportunity and assigning value based on the social interpretation of how one looks (race) that unfairly disadvantages some individuals and communities (and) unfairly advantages other individuals and communities…”50,51  that “impacts the health status of children, adolescents, emerging adults and their families.”52 

Inequalities in poverty, unemployment, and homeownership attributable to structural racism have been linked to increased obesity rates.53  Racism experienced in everyday life has also been associated with increased obesity prevalence.54  Youth with overweight and obesity have been found to be at increased risk not only for weight-based harassment but also for sexual harassment and harassment based on race and ethnicity, socioeconomic status (SES), and gender.55  In adults, studies have found positive associations between self-reported discrimination and waist circumference,56,57  visceral adiposity,58  and BMI57  in both non-Latino and Latino populations.59 

C. Weight Bias and Stigma Considerations

Individuals with overweight and obesity experience weight stigma, victimization, teasing, and bullying, which contribute to binge eating, social isolation, avoidance of health care services, and decreased physical activity.28,43  Importantly, internalized weight bias has been associated with a negative impact on mental health.60  Collectively, these factors may adversely affect quality of care, prevent patients with overweight and obesity from seeking medical care, and contribute to worsened morbidity and mortality, independent of excess adiposity.28,43,44 

Pediatricians and other PHCPs have been—and remain—a source of weight bias. They first need to uncover and address their own attitudes regarding children with obesity. Understanding weight stigma and bias, and learning how to reduce it in the clinical setting, sets the stage for productive discussions and improved relationships between families and pediatricians or other PHCPs. Acknowledging the multitude of genetic and environmental factors that contribute to the complexity of obesity is an important mitigator in reducing weight stigma.61  Additional actions that reduce weight stigma include having appropriately sized office furniture, using appropriate capacity medical equipment, ensuring that aesthetic and/or instructional images posted in the office are inclusive, and avoiding stigmatizing language.28  Accordingly, the CPG utilizes person-first language (ie, using the term “child with obesity, rather than “obese child”) to avoid labeling the child.28  This practice is consistent with recommendations from the AAP and other national organizations, including the Academy of Nutrition and Dietetics, the Obesity Society, and the Obesity Action Coalition.62 

D. Adverse Childhood Experiences

Adverse childhood experiences (ACEs) are negative experiences caused by situations or events in the lives of children and adolescents that can pose threats to their current and future physical and mental health.63,64  These experiences range from family turmoil and violence to financial hardship, loss of a parent, divorce, abuse, and parental mental illness—to name a few.65  ACEs have been associated with obesity, both in adulthood and in childhood.6668  Children and adolescents who live in poverty have a higher likelihood of experiencing ACEs, but risk for ACEs occurs at every income level.65,69  The greater the number of ACEs a child or adolescent experiences, the greater the risk for obesity.70  The most commonly cited mechanisms linking ACEs to obesity are social disruption, negative health behaviors, and chronic stress response.71 

Approach Summary

The recommendations in the CPG are child-centric and not specific to a particular health care setting and are written to inform pediatricians and other PHCPs about the standard of care for evaluating and treating children with overweight and obesity and related comorbidities. To reflect the pediatrician’s and PHCP’s individual relationship with the child and family, the Subcommittee refers to “evaluation” (eg, for comorbidities) rather than “screening.” It is anticipated that a pediatrician’s or other PHCP’s setting, training, and expertise may moderate how elements of the CPG are implemented. Helpful resources can be found in accompanying implementation materials.

Understanding the underlying genetic, biological, environmental, and social determinants that pose risk for obesity is the bedrock of all evaluation and intervention. Allowing the family to have a safe space to understand and process the complexity of obesity and its chronicity requires tact, empathy, and humility. Achieving this goal enables the patient and family to gain the knowledge and understanding needed to recognize risk factors in their environment and behaviors, to honor cultural preferences, and to institute changes independently as well as under the guidance of a trusted and well-trained advocate—such as pediatricians and other PHCPs.

Finally, to emphasize important goals of treatment—both improved weight status and reduction or elimination of comorbidities—the Subcommittee uses the term intensive health behavior and lifestyle treatment (IHBLT) rather than “intensive lifestyle or behavioral modification” or “weight management.” Additional definitions are listed in the next section.

III. Definition of Terms

BMI: BMI is a measure used to screen for excess body adiposity; it is calculated by dividing a person’s weight in kilograms by the square of height in meters. For children and teens, BMI interpretation is age- and sex-specific. A child’s BMI category (eg, healthy weight, overweight) is determined using an age- and sex-specific percentile for BMI rather than the BMI cut-points used for adult categories.72 

Capacity-building: “Building individual competencies and technical expertise, strengthening organizational capacities, and enabling supportive structural environments” to maintain or improve health services delivery.73 

Children with special health care needs: Children with special health care needs are those who have, or who are at increased risk for, a chronic physical, developmental, behavioral, or emotional condition and who also require health and related services of a type or amount beyond that required by children generally.74 

Chronic care model: The chronic care model identifies essential elements of a health care system that encourage high-quality chronic disease care: the community; the health system; self-management support; delivery system design; decision support, and clinical information systems.75 

Chronic disease: The Centers for Disease Control and Prevention (CDC) defines chronic diseases broadly as “conditions that last 1 year or more and require ongoing medical attention or limit activities of daily living or both.”76  Obesity is a chronic disease that results in altered anatomy, physiology, and metabolism—all of which adversely affect the physical and mental health trajectory of children and adolescents.77  The Obesity Medicine Association defines obesity as a “chronic, relapsing, multifactorial, neurobehavioral disease, wherein an increase in body fat promotes adipose tissue dysfunction and abnormal fat mass physical forces, resulting in adverse metabolic, biomechanical, and psychosocial health consequences.”78 

Comprehensive obesity treatment: Comprehensive obesity treatment (COT) (Fig 1) includes79,80 :

FIGURE 1

Treatment experience of obesity as a chronic disease (this figure illustrates how longitudinal care is important to help address this chronicity and to address and buffer the social and contextual factors that influence a person’s health).

FIGURE 1

Treatment experience of obesity as a chronic disease (this figure illustrates how longitudinal care is important to help address this chronicity and to address and buffer the social and contextual factors that influence a person’s health).

Close modal

Comprehensive patient history: A comprehensive patient history includes a review of systems; family history; history of present illness; and appropriate nutritional, physical activity, and psychosocial history.

Family-based treatment: Family-based treatment centers on the role of family at each stage of child development, includes consideration of the family’s critical role in supporting child health, and understands the unique contextual elements that affect the patient and family and influence treatment.

Intensive health behavior and lifestyle treatment: IHBLT educates and supports families in nutrition and physical activity changes that improve weight status and comorbidities and promote long-term health. IHBLT is most often effective when it occurs face-to-face, engages the whole family, and delivers at least 26 hours of nutrition, physical activity, and behavior change lessons over 3 to 12 months. IHBLT is foundational to COT and should continue longitudinally. It should be provided in conjunction with pharmacotherapy and metabolic and bariatric surgery if these treatments are indicated. IHBLT may be available in the form of a defined program and may be offered in pediatrician and other PHCP offices, medical centers or health systems, or in partnership with community organizations.

Longitudinal care: Care provided by a group of health care professionals who monitor a patient’s weight and other health indicators over a length of time sufficient to be associated with health improvements. Longitudinal care is continuous and coordinated and should include a plan for transition into adulthood.

Overweight and obesity: Overweight is defined as a BMI at or above the 85th percentile and below the 95th percentile for children and teens of the same age and sex. Obesity is defined as a BMI at or above the 95th percentile for children and teens of the same age and sex.

Pediatricians and other pediatric health care providers: For the purpose of this CPG, pediatricians and other pediatric health care providers refers to a qualified primary or tertiary care medical provider operating within their scope of practice and providing clinical care to children and adolescents. Examples include physicians, nurse practitioners, and physician assistants. (This document also refers to dietitians, licensed psychologists, exercise specialists, and other health care professionals who are not practicing medicine in the same manner.)

Pediatric medical home: The “pediatric medical home” delivers accessible, continuous, comprehensive, patient- and family-centered, coordinated, compassionate, and culturally effective health care. In this venue, well-trained pediatric physicians known to the child and family deliver or direct primary medical care.81 

Pediatric obesity specialist or clinician with expertise: Pediatric obesity specialists and clinicians with expertise are health care professionals with additional training in pediatric obesity medicine. Training may take the form of certification programs specific to obesity, fellowship, or a focus during specialty training, such as within endocrinology or gastroenterology specialty training. It may also take the form of an informal apprenticeship combined with professional workshops. For the purposes of this document, such training occurs within the context of recognized health care professional organizations.

Person-first language: According to the CDC, person-first language emphasizes the individual, not their disabilities.82  Hence, this CPG describes “children with obesity” or “adolescents with overweight,” not “obese children” and/or “overweight adolescents.”

Severe obesity: The expanded definition of “severe obesity” includes Class 2 and Class 3 obesity.83 

Social determinants of health (SDoHs): SDoHs are the conditions in the environments where people are born, live, learn, work, play, worship, and age that affect a wide range of health, functioning, and quality-of-life outcomes and risks. SDoHs can be grouped into 5 domains: economic stability, education access and quality, neighborhood and built environment, and social and community context.8,84,85 

Treatment intensification: Treatment intensification occurs through increased frequency of contact, increased length of treatment, or other means of increasing the dose of treatment. Treatment intensification could include additional health care professionals and/or additional methods, such as physical therapy, psychotherapy, medical nutrition therapy, pharmacotherapy, or metabolic and bariatric surgery.

IV. Methodology

A. Subcommittee Process and Support

In 2017, the CDC supported the AAP’s Institute for Healthy Child Weight (the Institute) to conduct an evidence review of obesity treatment and obesity-related comorbidities. The Institute identified a methodologist and convened an evidence review committee consisting of pediatricians and researchers with expertise in pediatric obesity etiologies, diagnosis, and management. This committee, which met regularly in 2018 to 2019, followed established methods (elaborated on below) to create 2 TRs, which capture the evidence review committee’s findings and detail the search criteria, systematic review process, and research history. One TR is on overweight and obesity treatment (https://doi.org/10.1542/peds.2022-060643) and the second is on overweight and obesity comorbidities (https://doi.org/10.1542/peds.2022-060643).

Staff from the Institute and the AAP’s Council on Quality Improvement and Patient Safety formed a CPG writing Subcommittee, comprising the methodologist and several evidence review committee members; a range of pediatric primary and tertiary care providers; behavioral health, nutrition, and public health researchers; a pediatric surgeon; medical epidemiologists from the CDC Division of Nutrition, Physical Activity and Obesity; an implementation scientist; a parent representative; and a representative from the AAP Partnership for Policy Implementation. Most Subcommittee members also have other national organization affiliations relevant to pediatric overweight and obesity.

The Subcommittee members were identified by the AAP and met regularly in 2019 and 2020 and virtually thereafter. Members were assigned sections and met virtually to complete their sections. Sections were reviewed by the chair or cochair and outstanding issues were resolved by group consensus. The parent member was an at-large member of all the writing groups and reviewed each section. Members’ potential conflicts of interest were identified and considered; no conflicts prevented Subcommittee members from participating in the CPG development process.

B. Scope of the Review

This review was designed to answer 2 overarching key questions (KQs). KQ1 was: “What are effective clinically based treatments for pediatric obesity?” KQ2 was: “What is the risk of comorbidities among children with obesity?”

The Subcommittee developed this focus based on the needs of pediatricians and other PHCPs and the evidence required to inform the future development of clinical practice guidelines. The review did not attempt to address treatment strategies for comorbidities (eg, hypertension [HTN], sleep apnea, type 2 diabetes mellitus [T2DM]), as other guidelines and reviews are available to guide such treatment.8690 

B.1. Rationale for KQ1: Intervention Studies

Pediatricians and other PHCPs are a trusted source of health information for parents, including on issues related to nutrition and physical activity, which are key components of obesity prevention and treatment. To meet this need, pediatricians and other PHCPs need to know the strategies that have high-quality evidence for effectiveness in preventing and treating obesity. Additionally, pediatricians and other PHCPs need guidance on which treatments are effective for their population and how to leverage available resources for obesity treatment efforts.

B.2. Rationale for KQ2: Comorbidity Studies

Previous recommendations have included assessments of comorbidities, including HTN, dyslipidemia, glucose, fatty liver disease, and others. It is not clear whether these assessments lead to improved treatment strategies or outcomes. Additionally, it is not clear whether conducting these assessments would result in an adverse outcome. We examined specific conditions that were previously recommended or that would reasonably require screening: dyslipidemia, HTN, diabetes, fatty liver disease, depression, sleep apnea, and asthma. This is not intended to be a comprehensive list of all conditions comorbid with obesity but represents those most common and for which screening is potentially helpful.

C. Search Strategy

The Evidence Review Subcommittee searched PubMed and CENTRAL (for trials). The initial search was on April 6, 2018, and an additional search was conducted to update the review, covering the time period April 7, 2018 through February 15, 2020. Both searches followed the same procedures, which are described below.

The Subcommittee combined the searches for both KQ1 and KQ2 because of their significant overlap to more efficiently review studies. Because the focus was on interventions that are relevant to primary care, the Subcommittee did not search other discipline-specific databases, such as ERIC or PsycInfo.

The Subcommittee searched for studies of children or adolescents, with a focus on overweight, obesity, or weight status; involving pediatricians, other pediatric health care providers, health care, or other treatment or screening (KQ1); and examining common comorbidities (KQ2). For both questions, the Subcommittee limited only using key words, not filters, to ensure the inclusion of the newest studies that had not yet been fully indexed. No date limits were placed on searches. In practice, this meant the Subcommittee reviewed studies from 1950 to 2020, although fewer than 2% of the studies were from before 1980.

The complete search strategies are included in Appendix 2 of the accompanying TRs (https://doi.org/10.1542/peds.2022-060642 and https://doi.org/10.1542/peds.2022-060643).

D. Inclusion Criteria

D.1. Inclusion Criteria Common to All Studies

All studies were required to include children ages 2 to 18 years. Studies could also include young adults up to age 25, if this population was stratified from older adult participants, as long as children younger than 18 years were also included in the study. Children could have other conditions (eg, asthma), as long as these conditions were not known to cause obesity, or be taking medications (eg, steroids) other than those known to be significantly obesogenic. Conditions known to cause obesity, such as Prader-Willi syndrome, obesogenic medication (eg, antipsychotics), or known genetic mutations associated with obesity (eg, melanocortin 4 receptor [MC4R]) were excluded.

All studies had to originate from Organization for Economic Cooperation and Development member countries and be available in English.

The race distribution of the samples is reported in the accompanying technical report evidence overview (Appendix 5 in TRs [https://doi.org/10.1542/peds.2022-060642 and https://doi.org/10.1542/peds.2022-060643]) to assist in interpretation of evidence within a health equity framework. The technical report authors notated in the “special populations” section of Appendix 5 when each study specifically focused on a lower-resourced population, as well as race and ethnicity distributions for all studies.

D.2. Inclusion Criteria for KQ1 (Intervention Studies)

The primary aim of the intervention studies had to be examination of an obesity prevention (intended for children of any weight status) or treatment (intended for children with overweight or obesity) intervention. The primary intended outcome had to be obesity, broadly defined, and not an obesity comorbidity. Studies of obesity interventions that reported other outcomes were included.

Interventions could involve any approach, including screening, counseling, medically managed weight loss, pharmaceutical treatment, or surgery. Regardless of the intervention components, there had to be some level of outpatient clinical involvement in the treatment (ie, not just referral to an outside program), such as screening or a clinic follow-up appointment. Interventions that occurred completely outside the scope of health care were excluded. For example, school-based obesity prevention programs or community-based activity programs with no pediatrician or other pediatric health care provider involvement were excluded.

The Subcommittee did not limit the search by study design but did report experimental and nonexperimental studies separately. Although nonexperimental designs were included, all studies had to have a relevant comparison group to be included in the TR on interventions (https://doi.org/10.1542/peds.2022-060642).

D.3. Inclusion Criteria for KQ2 (Comorbidity Studies)

The Subcommittee included studies that had a primary aim of comparing comorbidities among those with and without obesity or by severity of obesity. Obesity and the comorbidity had to be measured contemporaneously to reflect the practice of clinical screening. Obesity had to be categorized using a BMI-based measure into accepted categories (ie, healthy weight, overweight, class 1 obesity, class 2 obesity, class 3 obesity). These categories could be based on percentiles or z-scores and could use the distributions relevant to the studied population (eg, World Health Organization [WHO] or the CDC).91,92 

All studies had to include 1 or more of the following comorbidities: lipids, blood pressure (BP), HTN, liver function, glucose metabolism, obstructive sleep apnea (OSA), asthma, or depression. These were chosen based on known associations with weight and potential for screening in the primary care setting.

The complete inclusion criteria are included in Appendix 3 of the accompanying TR on comorbidities (https://doi.org/10.1542/peds. 2022-060643).

E. Review Process

The Subcommittee used Covidence to manage the review process (https://www.covidence.org/). Covidence is a program for online collaboration and management of systematic reviews. All abstracts were reviewed by 2 independent reviewers on the Subcommittee, who assessed the study’s inclusion in the full-text review process. All conflicts were discussed and resolved. Articles excluded at this stage were assigned an exclusion reason, with a hierarchy, which is shown in Appendix 4 of the accompanying TRs (https://doi.org/10.1542/peds.2022-060642 and https://doi.org/10.1542/peds.2022- 060643).

F. Data Extraction and Quality Assessment

All articles deemed to meet criteria for full text inclusion were categorized into different data extraction strategies. Randomized trials were given a quality assessment using the Cochrane Risk of Bias tool. The Subcommittee decided not to limit studies based on the study quality, because many of them did not reach “high-quality” status (ie, at low risk of bias for most or all domains in the Cochrane Risk of Bias Assessment) using any of the tools. This occurred largely because studies consisted primarily of behavioral interventions without the possibility of blinding.

All studies, regardless of group, were fully extracted by 2 reviewers, and conflicts were discussed and resolved. Intervention studies were categorized into 5 groups for data extraction.

F.1. Group 1 Extraction

Group 1 articles included randomized trials of diet or “lifestyle” interventions. Extraction of these articles included: sponsorship or funder, design, population information, provider type, detailed intervention strategies and intensity, and BMI-based outcomes. The Subcommittee also identified outcomes other than BMI, including lipids, glucose metabolism, BP, other laboratory values, other obesity measures, psychosocial outcomes, mental health, behaviors, and other outcomes (primarily parent BMI and child cardiovascular fitness).

The Subcommittee categorized the intensity of interventions in a manner consistent with the US Preventive Services Task Force (USPSTF) to allow for comparisons with its findings, into interventions with a dose (number of hours) of <5 hours; 5 to 25 hours; 26 to 51 hours; and 52 or more hours. All interventions occurred over less than 1 year. The Subcommittee conducted quality assessment for group 1 articles.

F.2. Group 2 Extraction

Group 2 articles included randomized controlled trials of pharmaceutical treatments. Similar information as above was extracted, using a brief description of the treatment and no categorization of intensity. These articles also received a quality assessment.

F.3. Groups 3 Through 5 Extraction

i) Groups 3 Through 5 Articles Group 3 articles included nonrandomized comparative studies of diet and “lifestyle” treatments, group 4 articles included nonrandomized comparative studies of pharmaceutical treatment, and group 5 articles included any surgical studies.

Because of small numbers, the Subcommittee combined randomized and nonrandomized surgical studies. Brief treatment descriptions and BMI-related outcome data were extracted from these, but the Cochrane Risk of Bias tool was not used because these were observational designs.

F4. KQ2 Extraction (Comorbidity Studies)

All studies were extracted by 2 reviewers who reported prevalence of comorbidities or mean values of laboratory parameters by weight classification. The Subcommittee included healthy weight, overweight, class 1 obesity, class 2 obesity, and class 3 obesity.

Because all classes of obesity severity were not always reported in the studies, these classes may include higher groups. For example, reporting of ≥95th percentile would only be considered class 1 obesity, although children at higher levels may be included. (See the TR for a detailed description of the KQ1 extraction procedures.)

G. Data Synthesis and Analysis

The Subcommittee’s primary method of data synthesis was narrative. To allow broad inclusion, the Subcommittee did not limit to specific designs or measures that would facilitate meta-analysis. The Subcommittee has reported on studies in each group based on their type and design and has reported findings for outcomes other than BMI.

The AAP policy statement, “Classifying Recommendations for Clinical Practice Guidelines,” was followed in designating aggregate evidence quality levels for the available evidence (Fig 2).93  The AAP policy statement is consistent with the grading recommendations advanced by the University of Oxford Centre for Evidence-Based Medicine.

FIGURE 2

Grading matrix.

Evidence grades were determined based on the grading matrix in Fig 2. Although we included both trials and observational studies in the technical reports, they are reviewed separately. Study design was considered in the aggregate evidence quality grades, as indicated by the matrix. We did not explicitly use risk of bias scores, but this information was available and used in the Subcommittee’s final assessment.

The Subcommittee reached consensus on the evidence, which was then used to develop the clinical practice guideline’s KASs. When the scientific evidence was at least “good” in quality and demonstrated a preponderance of benefits over harms, the KAS provides a “strong recommendation” or “recommendation.” Clinicians should follow a strong recommendation unless a clear and compelling rationale for an alternative approach is present; clinicians are prudent to follow a recommendation but are advised to remain alert to new information and be sensitive to patient preferences (Fig 2).

Integrating evidence quality appraisal with an assessment of the anticipated balance between benefits and harms leads to a designation of a strong recommendation, recommendation, option, or no recommendation. Once the evidence level was determined, an evidence grade was assigned. AAP policy stipulates that the evidence supporting each KAS be prospectively identified, appraised, and summarized, and an explicit link between quality levels and the grade of recommendation must be defined.

Possible grades of recommendations range from “A” to “D,” with “A” being the highest:

When it was not possible to identify sufficient evidence, recommendations are based on the consensus opinion of the Subcommittee members.

VI. Epidemiology of Childhood and Adolescent Obesity

A. Prevalence of Childhood Obesity

Obesity is a common, complex, and often persistent chronic disease associated with serious health and social consequences.94  Childhood obesity is typically defined as having a BMI of ≥95th percentile for age and sex.95  Severe obesity is defined as BMI ≥ 120% of the 95th percentile for age and sex. The percentage of US children and adolescents affected by obesity has more than tripled from 5% in 1963 to 1965 to 19% in 2017 to 2018.2  In 2017 to 2018, the rise in obesity prevalence slowed in children younger than 6 years of age, but increases continued among certain populations, including adolescents and non-Hispanic Black and Mexican American youth.4  A predictive epidemiologic model estimates that if 2017 obesity trends hold, 57% of children aged 2 to 19 years will have obesity by the time they are 35 years of age, in 2050.36 

Obesity prevalence increases with increasing age.3  For example, in 2015 to 2016, the prevalence of obesity in children aged 2 to 5 years, 6 to 11 years, and 12 to 19 years was 13.9%, 18.4%, and 20.6%, respectively.3  Among children younger than 6 years, there were no significant trends in obesity from 1999 to 2018 for those 2 through 5 years of age.4  For children 6 through 11 years of age, significant trends in obesity show an increased prevalence from 15.8% in 1999 to 2002 to 19.3% in 2015 to 2018.4  Similarly, among adolescents 12 through 19 years, trends show increased obesity in the same time period from 16.0% to 20.9%.4  The proportion of children and youth 2 to 19 years of age with severe obesity increased from 4.9% in 1999 to 2000 to 7.9% in 2015 to 2016.4,96  The prevalence of severe obesity in youth 12 to 19 years of age in 2015 to 2018 was 7.6%.4 

The COVID-19 pandemic has significantly affected the lives and routines of children and adolescents. In 1 analysis, the pandemic period was associated with a doubling in the rate of BMI increase compared with the prepandemic period.97  Obesity prevention and management efforts should routinely include health care provider screening for BMI, food security, and social determinants of health and increased access to evidence-based pediatric weight management programs and food assistance resources to mitigate such effects in the future.97 

Disparities exist among children and youth with obesity, including, but not limited to, lower level of parental education, lower income, less access to healthier food options and safe and affordable physical activity opportunities, and higher incidence of ACEs.70,98,99  For example, among 5345 children 6 to 9 years of age, those whose parents had lower levels of education had a greater odds of having obesity compared with children whose parents had higher levels of education (odds ratio: 1.78; 95% confidence interval [CI]: 1.36 to 2.32).100  A cross-sectional analysis of 111 799 children in Massachusetts at the school district level showed that for every 1 percentage point increase in the proportion of children with low SES, there was a 1.17 percentage point increase in the prevalence of obesity.101  Furthermore, children with disabilities, including those with intellectual disabilities, are at higher risk for developing obesity than their peers without disabilities.102 

Finally, among 43 864 children and adolescents aged 10 to 17 years old, the presence of 2 or more early ACEs was associated with an increased odds of obesity later in childhood and adolescence (odds ratio: 1.21; 95% CI: 1.02 to 1.44).103  Together, these disparities highlight the burden of obesity in children from families of lower SES and the need to provide strategies to minimize these inequities.

Disparities also exist in obesity prevalence across ethnic and racial groups. In 2015 to 2018, non-Hispanic Black children and Mexican American youth 6 to 11 years of age had a higher prevalence of obesity compared with non-Hispanic white children (22.7% and 28.2% vs 15.5%, respectively).4  An analysis of the Indian Health Services National Data Warehouse showed that in 2015, the prevalence of overweight and obesity in American Indian and Alaska Native (AI/AN) children and adolescents was 18.5% and 29.7%, respectively.104 

Among children 2 to 5 years of age from lower-income families enrolled in the Special Supplemental Nutrition Program for Women, Infants, and Children program, recent analyses indicate a modest but significant decline in obesity prevalence from 2010 (15.9%) to 2018 (14.4%).106  Among these children, obesity prevalence ranged across states from 8.5% to 20.2%; disparities persisted by race and ethnicity despite changes in prevalence over time.105 

In addition, children and youth with special health care needs (CYSHCN) have a higher prevalence of obesity and lower levels of physical activity compared with children having typical growth and development.106108  Among CYSHCN, a metanalysis of studies of adolescents with intellectual disabilities found a pooled odds ratio of obesity of 1.80 compared with adolescents with typical development.102 

B. Impact of Obesity in Childhood

Children with obesity commonly become adolescents and adults with obesity; severe obesity during adolescence increases the risk for severe obesity during young adulthood.109,110  BMI levels strongly track throughout childhood and adolescence and are predictive of high adult BMI.110 

Obesity puts children and adolescents at risk for serious short- and long-term adverse health outcomes later in life, including cardiovascular disease, including HTN; dyslipidemia; insulin resistance; T2DM; and nonalcoholic fatty liver disease (NAFLD).38,96,111113  Additionally, prediabetes in youth with obesity, compared with youth with normal weight, has been associated with elevated systolic blood pressure and low-density lipoprotein, and lower insulin sensitivity.114 

In addition to physical and metabolic consequences, obesity in childhood and adolescence is associated with poor psychological and emotional health, increased stress, depressive symptoms, and low self-esteem.115  Several studies have determined that children of some racial and ethnic groups have a greater prevalence of comorbidities associated with childhood obesity, including HTN, T2DM, hypercholesterolemia, and depression, compared with non-Hispanic white children.116120 

Obesity in childhood and adolescence is associated with health care utilization and costs. For example, the most common primary conditions that cooccur with a secondary diagnosis of obesity and may increase costs and utilization include pregnancy, mood disorders, asthma, and diabetes.121  A modeling study has estimated that the total lifetime medical costs for 10-year-olds with lifelong obesity to be in the range of $9.4 to $14 billion for that cohort alone.122 

Tracking obesity across the lifespan underscores the importance of primary and secondary prevention and treatment efforts early in life. These efforts include evaluating for obesity using BMI; identifying children at high risk and adolescents; providing or referring to evidence-based obesity treatments for children, youth, and their families; and addressing SDoHs.

VII. Diagnosis and Measurement

Although KAS 1 was not explicitly studied and referenced by the TR, most of the TR studies implicitly included measurement of height and weight and calculation and plotting of BMI as part of the study procedures. Thus, the concept of appropriate measurement, calculation, charting, and tracking is implicit in research-based evidence included in the TR (eg, references123,124,126,130 ).

A. Use of BMI as a Screening and Diagnosis Tool

The gold standard measurement of body composition—dual-energy x-ray absorptiometry—to identify, locate, and quantify body fat, and can be expensive and difficult to implement. In clinical practice, BMI is frequently used as both a screening and diagnostic tool for detecting excess body fat because it is easy to use and inexpensive. BMI is a validated proxy measure of underlying adiposity that is replicable and can track weight status in children and adolescents.38,131,132  Because of its ease of use, BMI is also frequently used to follow a child or adolescent’s weight trajectory over time. The CDC BMI growth curves are frequently used to visualize BMI trajectory over time. Furthermore, BMI is often used to evaluate the success or impact of interventions to improve weight status.

For most individuals, BMI is generally well-correlated with direct measures of body fat, including skinfold thickness measurements, bioelectrical impedance, densitometry, and dual-energy x-ray absorptiometry.131,133139 

BMI has limitations, however, including high specificity and low sensitivity for detecting excess adiposity.132  BMI does not directly measure body composition and fat content and may under- or overdetect excess adiposity in certain racial and ethnic groups.140,141  Finally, children and adolescents who have high fat-free mass may have a high BMI and, as a result, be incorrectly classified as having overweight or obesity.142 

The CDC’s 2000 Growth Charts are based on NHANES data from the 1960s through the early 1990s and include age- and sex-specific BMI-for-age charts.143  The CDC Growth Charts provide a historical comparison of children’s weight status relative to a time before the current obesity epidemic during that healthier growth patterns predominated; thus, percentiles on the Growth Charts do not equate to the current population distribution of BMI. The CDC Growth Charts are recommended for clinically tracking BMI patterns among US children and adolescents aged 2 to 18 years; although the CDC Growth Charts can be used for adolescents aged 19 to 21 years, in practice, most pediatricians and other PHCPs transition to adult BMI calculation and categorization for patients older than 18 years.143 

“Overweight” is defined as a BMI at or above the 85th percentile and below the 95th percentile for age and sex; “obesity” is defined as a BMI at or above the 95th percentile for age and sex. “Severe obesity” is defined as a BMI equal to or more than 120% above the 95th percentile, which approximates the 99th percentile. The CDC Growth Charts were not intended to track growth of children with extremely high BMI values. Because of limited data on children and adolescents above the 97th percentile in the reference population, higher percentile curves could not be generated. Caution was recommended in extrapolation of percentiles beyond the 97th percentile, as this may generate unusual or unexpected results.144  In older adolescents, the adult cut-off of a BMI equal to or greater than 30 kg/m2 can be used to define obesity if this value is less than the 95th percentile BMI for age and sex.

Conversion of BMI percentiles to z-scores (a statistical measure that describes a value’s relationship to a population mean) derived from the CDC Growth Charts have historically been used for assessing longitudinalchange in adiposity over time among children and adolescents with obesity.127  The change in z-score, however, may not accurately detect meaningful changes in weight status or comorbidity risk over time, particularly for children and adolescents with severe obesity caused by compression of z-scores corresponding to extremely high BMI values into a very narrow range.145  Consequently, investigators have proposed and described various alternative options, including using the degree to which, expressed in percentage, a particular BMI percentile was above the 95th percentile, or the median, for age and sex (referred to as percentage above the 95th percentile, or percentage above the median, respectively).

The “extended” method for calculating BMI z-scores and percentiles at extremely high BMI values was developed to address these limitations. This method incorporates data on children and adolescents with obesity from more recent NHANES surveys to better characterize the BMI distribution above the 95th percentile while retaining the 2000 CDC Growth Chart BMI distribution below the 95th percentile.

The CDC and the AAP recommend that weight status in children up to 2 years of age be tracked using the WHO’s weight-for-length, age-, and sex-specific charts.146,147  Specialized growth charts for children and adolescents with certain conditions, such as trisomy 21, can provide useful growth reference information for special populations. These charts may, however, be limited, for example, by the small sample sizes used in developing them, which may not be representative of all children and youth with trisomy 21.148 

B. The Clinical Utility of BMI

BMI is a useful evaluation measure to clinically identify children with overweight and obesity for appropriate treatment—such as family-based behavioral therapy—which can lead to improvements in BMI and related comorbidities.123,124,127130,149152 

Following comprehensive systematic reviews, the USPSTF issued a Grade B recommendation that pediatricians and other PHCPs screen children and adolescents aged 6 years or older annually for obesity—defined by BMI percentile—and offer, or refer children and adolescents to, a comprehensive, intensive, family-based behavioral treatment to improve weight status.79  (A “comprehensive, intensive behavioral treatment” was defined as a treatment of 26 hours or more over a period of 2 to 12 months.) (See Evaluation and Treatment sections.)

Furthermore, the AAP’s Bright Futures recommendations, which are based on systematic reviews and expert panels, offer prevention guidelines including annual assessment of BMI alongside dietary nutrition and physical activity counseling for children and adolescents starting at 2 years old127,153 (Appendix 2).

Appendix 2 describes the USPSTF recommendations, Bright Futures recommendations, and the recommendations reflected in this CPG’s KAS 1. All 3 sources recommend annual screening for excess weight using BMI, with the USPSTF beginning at 6 years old and both Bright Futures and this CPG beginning at age 2 years. For children or adolescents with a BMI ≥ 95th percentile for age and sex, the USPSTF provides recommendations for primary care providers to offer, or refer them to, a comprehensive, family-based weight management intervention. Bright Futures recommends that primary care providers screen for excess weight and provide dietary nutrition and physical activity counseling for all children and adolescents with either overweight or obesity (BMI ≥ 85th and <95th percentile for age and sex). Bright Futures also provides implementation tips and guidance for pediatricians and other PHCPs including, for example, providing counseling using motivational interviewing. Bright Futures offers guidance to states by offering a framework for meeting national performance standards under Title V. Finally, Bright Futures suggests how communities and families can support healthier lifestyles and prevention. This CPG recommends referral to evidence-based weight management interventions for all children 2 years and older who have a BMI ≥ 95th percentile for age and sex (see KAS 1, above).

The practice of annual BMI measurement at well-child visits is recommended and central to the management and tracking of overweight and obesity in children.127,153,154  Limitations to this approach include missed opportunities to track and manage weight changes that occur in less than a 12-month period.127,153  However, other visit opportunities can be used to assess BMI outside the well-child visit.153  This CPG’s KAS on evaluation, based on the evidence described above, and in concordance with USPSTF and the Bright Futures recommendations, continues to highlight the critical importance of annual evaluation for excess weight and the provision of, or referral to, evidence-based interventions, as indicated, to promote the health and well-being of all children and adolescents.

C. Communication of BMI and Weight Status to Children and Parents

Despite its limitations, BMI is currently the most appropriate clinical tool to screen for excess adiposity and make the clinical diagnosis of overweight or obesity. Thus, the BMI must be communicated to the patient and family, as it guides next steps for comprehensive evaluation and treatment of obesity and related comorbidities. Weight-related discussions can be uncomfortable for clinicians who want to avoid stigmatizing children because of their shape or size. Avoiding this discussion may, however, cause delays or barriers to patients receiving evidence-based care. In addition, obesity stigma can result in patient avoidance of health care and disruption of clinician-patient relationships. There is evidence that having conversations about obesity can facilitate effective treatment.155157 

Three key factors can facilitate a nonstigmatizing conversation about weight with patients and families:

  1. Ask permission to discuss the patient’s BMI and/or weight.

  2. Avoid labeling by using person-first language (“Child with obesity”; not “obese child” or “my patient is affected by obesity; not “my patient is obese”).158 

  3. Use words that are perceived as neutral by parents, adolescents, and children. In several studies inclusive of diverse racial, ethnic, and rural and urban populations, preferred words include: “unhealthy weight, gaining too much weight for age, height, or health, demasiado peso para su salud (too much weight for his or her health).” Words perceived as most offensive include: “obese, morbidly obese, large, fat, overweight, chubby, or sobrepeso (overweight).”156 

Recognize that discussing BMI with children, adolescents, and families, even when using nonstigmatizing language and preferred terms, can elicit strong emotional responses including sadness or anger. Acknowledging and validating those responses, while keeping the focus on the child’s health, can help to strengthen the relationship between the pediatrician or other PHCP and patient and family to support ongoing care.159 

VIII. Risk Factors for Child and Adolescent Overweight and Obesity

Obesity is a chronic disease that has a multifactorial etiology. Risk factors for overweight and obesity—many of which are SDoHs—include broader policies and systems factors; institutional or organizational (ie, school); neighborhood and community; and family, socioeconomic, environmental, ecological, genetic, and biological factors (Table 1).21,160  These individual, social, and contextual risk factors often overlap and/or influence one another and can operate longitudinally throughout childhood and adolescence, initiating weight gain and escalating existing obesity. Children and their families interact with their environment at all of these levels and have a unique and “insider’s” point of view that needs to be understood in delivering culturally sensitive care.161 

Pediatricians and other PHCPs need to be aware of the risk factors for pediatric obesity to provide early anticipatory guidance for obesity prevention, monitor their patients closely, and intervene early when weight trajectory increases.

Consensus Recommendation

The CPG authors recommend pediatricians and other pediatric health care providers:

A. Policy Factors

The larger macroenvironment—including societal attitudes and beliefs, government policies, food industry practices, and the educational and health care systems—can influence obesity risk.162  It is difficult to make or sustain healthy behavior changes in an obesogenic environment that promotes high-energy intake, unhealthy dietary choices, and sedentary behavior.

A.1. Marketing of Unhealthy Foods

Marketing of unhealthy food and beverages directed at children tends to negatively impact their dietary choices and behaviors.163166  Foods and beverages embedded in entertainment media have been shown to influence eating behavior choices of children and also increase consumption of foods during or after exposure to the embedded foods.167 

A systematic review and meta-analysis showed that even short exposure to unhealthy food and beverage marketing targeted to children resulted in in increased dietary intake and behavior during and after the exposure.168  Both younger children and male children (sex assigned at birth) tend to be more susceptible to the food and beverage marketing,168  and because of their stage of cognitive development, younger children are more likely to be susceptible to advertising and interpret it as factual.169,170 

Currently, marketing to children targets highly palatable relatively inexpensive energy-dense foods and beverages.166  This marketing occurs via television, websites, online games, at supermarkets, and outside schools.166  Children are, unfortunately, frequently exposed to foods of low nutritional values from advertisements; therefore, it is not surprising that they have preferential increase in consumption of foods of low nutritional value.167 

A.2. Underresourced Communities

Underresourced communities are settings in which obesity risk factors can predominate over health-promoting factors. Children and families in these settings may be unable to access fresh fruits and vegetables and safe physical activity spaces and may suffer from food insecurity.170172  Limitations in transportation, cost, affordability, and availability may reduce access to health care and obesity treatment. Families may be struggling with poverty, access to healthy foods, lack of social supports, racism, and/or immigration status. Understanding these contextual factors that impact each child and family is crucial in being able to provide compassionate and effective obesity treatment.

A.2.a. Socioeconomic Status

Obesity has been shown to disproportionately affect children and adolescents who have low SES.173175  Even though the prevalence of obesity has been stabilizing among US children overall, the rates continue to increase among children with low SES.173,176  According to the Children’s Defense Fund, the poverty rate among US children is alarmingly high.177 

A longitudinal analysis of predominantly non-Hispanic white children in the United States found that low SES before 2 years of age was associated with higher obesity risk by adolescence in both boys and girls; this analysis also indicated that the effect of early poverty endures later in life.178  Similarly, another study found that low SES in early childhood had a long-term impact on overweight and obesity.179  This study found that the risk of experiencing overweight or obesity in adulthood was not altered by either upward or downward mobility of poverty after early childhood,179  indicating the long-term effect of poverty-related stress in early childhood.

Low SES may also be associated with higher risk for obesity by increasing the child’s experience with toxic stress. In addition, poverty may limit access to healthy foods and opportunities for physical activity.180182  Another study of a large dataset of children followed longitudinally from 9 months of age to kindergarten entry showed that SES played a major role in BMI z-score gaps in Hispanic children, whereas rapidity of weight gain in the first 9 months “accounted for much of the disparity between white children and children” of other races and ethnicities (other than Hispanic children).180 

A.2.b. Children in Families That Have Immigrated

For decades, researchers have believed that despite poverty and other negative SES factors, recently arrived immigrants are healthier than their US-born counterparts. Recent studies, however, have examined large datasets in novel ways and now call this idea into question when it comes to children in families that have immigrated.183 

As families who have immigrated try to adjust to a new culture, they may adopt Americanized foodways, which are high in fat, sugar, and salt. This tendency could be heightened by children’s exposure to media advertising these foods and high-energy snacks and by reduced physical activity.184,185 

Patterns of childhood overweight and obesity among families that have immigrated vary substantially by both ethnicity and generational status. Immigrants to the United States generally originate from countries that have a lower prevalence of obesity, but as families acculturate to US eating and activity patterns, rates of obesity may increase. One study found that second-generation Hispanic immigrants were 55% more likely to have obesity than nonimmigrant white children, whereas first-generation Asian immigrants had a 63% lower risk of having obesity.180 

Several studies have indicated different patterns of developing obesity in Mexican-origin populations among adults and children. Obesity among adults of Mexican origin in the United States has been associated with longer stays in the United States and with being born in the United States versus Mexico, which are 2 proxies for acculturation. This pattern differs in children, in whom “significantly higher obesity prevalence has been observed for first-generation young adult males (ages 18–24) and adolescent females (ages 12–17).”186 

In addition, in some cultures, larger body sizes may be preferred as an indication of health and wealth.187  This cultural factor may make it more difficult for parents to understand the gravity of their children’s overweight or obesity. For this and many other reasons, it is vital to ensure that children and families who have immigrated and who are native-born have access to culturally competent health care.188 

A.3. Food Insecurity

The literature positing an association between food insecurity and overweight and obesity in children has been inconsistent when looking at general child populations. Children living in households with food insecurity have been found, however, to have higher BMI z-scores and waist circumference measurement and a greater likelihood of having overweight or obesity.189  The correlation between food insecurity and obesity has been found to be higher in adolescents, who may have had more exposure to food insecurity over their life-course.190  Female children appear to more at risk for obesity in food-insecure environments, compared with male children.191 

Food insecurity is highly associated with poverty, and the cost of fruits and vegetables192  and fast food have been found to influence consumption in low-income families193,194  and to be positively related to overweight in children.195  Associations between consuming more sugar from sugar-sweetened beverages, and less frequency of eating breakfast and eating dinner with family have also been noted in families with food insecurity.190,196  Family dynamics around feeding may change in situations of food insecurity and include pressure to eat as well as monitoring and restrictive eating practices.191,197  Experiences of food insecurity are stressful for children and families and may add to the burden of chronic stress, which can result in altered eating patterns in the direction of either restricting intake or increasing consumption of energy-dense foods.190,196 

The AAP and Food Research and Action Center’s toolkit, Screen and Intervene: A Toolkit for Pediatricians to Address Food Insecurity, is designed to help pediatricians identify and address childhood food insecurity (available at https://frac.org/aaptoolkit). The Toolkit assists pediatricians and other PHCPs to: (1) better identify children living in households struggling with food insecurity; (2) sensitively address the topic; (3) connect patients and their families to federal nutrition programs and community resources; and (4) advocate for greater food security and improved overall health of children and their families. The toolkit also includes the “Hunger Vital Sign,” a simple, validated 2-question tool that can be used in the clinical setting to evaluate for food insecurity (see link to toolkit above).

B. Neighborhood and Community Environment Influences or Contributors to Obesity

Environmental factors play an important role in obesity prevalence. Families’ dietary and physical activity opportunities and practices (mentioned above) are influenced by their neighborhoods (Table 1).

TABLE 1

Selected Examples of Multilevel Influencers and Contributors to Obesity

Example Description
A. Policy factors • Marketing of unhealthy foods 
 • Underresourced communities 
 • Food insecurity 
B. Neighborhood and community factors 1. School environment 
 2. Lack of fresh food access 
 3. Fast food proximity 
 4. Access to safe physical activity 
 5. Environmental health 
C. Family and home environment factors 1. Parenting feeding style 
 2. Sugar-sweetened beverages 
 3. Portion sizes 
 4. Snacking behavior 
 5. Dining out and family meals 
 6. Screen time 
 7. Sedentary behavior 
 8. Sleep duration 
 9. Environmental smoke exposure 
 10. Psychosocial stress 
 11. Adverse childhood experiences 
D. Individual factors D.1. Genetic factors 
  a. Monogenetic syndromes and polygenetic effects 
  b. Epigenetic effects 
 D.2. Prenatal risk 
  a. Parental obesity 
  b. Maternal weight gain 
  c. Gestational diabetes 
  d. Maternal smoking 
 D.3. Postnatal risk 
  a. Birth weight 
  b. Early breastfeeding cessation and formula feeding 
  c. Rapid weight gain during infancy and early childhood 
  d. Early use of antibiotics 
 D.4. Childhood risk 
  a. Endocrine disorders 
  b. Children and youth with special health care needs 
  1. Children with autism spectrum disorder 
  2. Children with developmental and physical disabilities 
  3. Children with myelomeningocele 
  c. Attention-deficit/hyperactivity disorder 
  d. Weight-promoting appetitive traits 
  e. Medication use (weight-promoting medications) 
  f. Depression 
Example Description
A. Policy factors • Marketing of unhealthy foods 
 • Underresourced communities 
 • Food insecurity 
B. Neighborhood and community factors 1. School environment 
 2. Lack of fresh food access 
 3. Fast food proximity 
 4. Access to safe physical activity 
 5. Environmental health 
C. Family and home environment factors 1. Parenting feeding style 
 2. Sugar-sweetened beverages 
 3. Portion sizes 
 4. Snacking behavior 
 5. Dining out and family meals 
 6. Screen time 
 7. Sedentary behavior 
 8. Sleep duration 
 9. Environmental smoke exposure 
 10. Psychosocial stress 
 11. Adverse childhood experiences 
D. Individual factors D.1. Genetic factors 
  a. Monogenetic syndromes and polygenetic effects 
  b. Epigenetic effects 
 D.2. Prenatal risk 
  a. Parental obesity 
  b. Maternal weight gain 
  c. Gestational diabetes 
  d. Maternal smoking 
 D.3. Postnatal risk 
  a. Birth weight 
  b. Early breastfeeding cessation and formula feeding 
  c. Rapid weight gain during infancy and early childhood 
  d. Early use of antibiotics 
 D.4. Childhood risk 
  a. Endocrine disorders 
  b. Children and youth with special health care needs 
  1. Children with autism spectrum disorder 
  2. Children with developmental and physical disabilities 
  3. Children with myelomeningocele 
  c. Attention-deficit/hyperactivity disorder 
  d. Weight-promoting appetitive traits 
  e. Medication use (weight-promoting medications) 
  f. Depression 

B.1. School Environment

Children spend most of their time in school. Therefore, schools play an important role in influencing children’s food choices and physical activity level and, ultimately, their body weight. For example, the presence of fast foods, vending machines, and/or sweetened beverages in schools may negatively influence children’s food choices.198 

Systematic reviews have shown an association between fast food outlets and convenience stores located near schools and obesity in children.199,200  When analyzed by subgroups, a positive association has been seen between fast-food outlets and proximity to schools among Hispanic, Black, and white children. Although the association was seen for all grade levels, the effect was larger in younger grades.199  This review also reported a stronger association between fast-food outlets and grocery stores located near schools and obesity in socioeconomically underresourced neighborhoods.

B.2 Lack of Fresh Food Access

A neighborhood’s food environment has been shown to have mixed association with children’s BMI. Although some studies have shown that a 1.6-km distance or shorter from a home to a supermarket is associated with a lower BMI,201  other studies have found that the greater the number of supermarkets located near a child’s home, the higher the child’s BMI.202  Similarly, a systematic review reported mixed association, with some studies showing a negative association between supermarket accessibility and childhood and adolescent obesity, and other studies either showing a positive effect or no association.203 

Some of the differences were attributed to variations in assessment measures and lack of adjustment for confounding variables. Hence, it is not only the presence of supermarkets that is important, but also other factors that may impact dietary choices—such as the type of foods stocked, pricing, etc. Some, but not all, studies have reported a positive association between neighborhood poverty and childhood and adolescent obesity.204 

It has been suggested that lack of access to fresh fruits and vegetables may be a risk factor for childhood and adolescent obesity, as it may lead to an increased reliance on, and consumption of, unhealthy foods. The data for this association have been inconsistent, however. A recent systematic review showed that, although there was a negative association between access to fresh fruits and vegetables and healthy eating behavior, the association between access to fresh fruits and vegetables and overweight and obesity was inconclusive.205 

B.3. Presence of Fast-food Restaurants

Fast-food restaurants generally serve relatively low-priced and calorie-rich fast foods with high levels of saturated fat, simple carbohydrates, sugar, and sodium. Because of their easy availability, taste, and marketing strategies, fast foods tend to be popular with children and adolescents.206 

Fast-food consumption has been associated with weight gain.207  Some, but not all, studies have shown an association between access to fast-food restaurants and pediatric obesity.208  A meta-analysis and recent systematic review showed a mixed association between access to fast-food restaurants and weight-related behaviors and weight status in children and adolescents.209  This association was shown to be stronger in populations with lower SES.209 

B.4. Access to Safe Physical Activity

A child’s environment may influence the amount of physical activity they get. For example, living in an urban environment that lacks safe walkable and/or green spaces in which children can play may result in decreased physical activity levels. Greater exposure to green space has been shown to be associated with higher levels of physical activity and lower risk of obesity.210 

A recent systematic review of the literature on the influence of the built environment and childhood obesity found significant association between childhood obesity and traffic air pollution and indicators of walkability (which included intersection density and presence and amount of park area in the neighborhood).211 

In addition to green spaces, other aspects of the environment—including safety—are important in these spaces’ use. A study of low-income preschool children in New York City reported an association of lower obesity risk in neighborhoods with trees alongside the streets and a positive association between obesity and higher homicide rates in the neighborhood.212 

B.5. Environmental Health

Exposure to environmental hazards during the prenatal period, infancy, and childhood can have impacts on the health and well-being of children. Endocrine-disrupting chemicals (EDC) can cross the placental barrier and affect the fetus.213  There are some data that show an association between prenatal exposure to bisphenol A and polyfluoroalkyl and childhood obesity.214,215 

In the postnatal and infancy period exposure may occur through breastfeeding, inhalation, ingestion, or absorption through the skin. Children get exposed to chemicals that are used in household products including cleaning agents, food packaging, pesticides, fabrics, upholstery, etc. Leaching of chemical products (eg, bisphenols, phthalates, parabens, and other EDCs) has been reported in baby feeding bottles, clothing, diaper creams, etc. Exposure to EDCs during early childhood can affect programming of several systems, including endocrine and metabolic systems, which may affect BMI, cardiovascular, and metabolic outcomes later in life.213 

C. Family and Home Environment Factors

The family’s dietary preferences and lifestyle habits have a crucial role in influencing the child’s weight.216  Parenting feeding practices and modeling of eating behavior and the type and quantities of foods and beverages in the home have been reported to be important influences in children’s appetitive behaviors and food preferences.217 

C.1. Parenting Feeding Styles

Parenting styles differ and may have an impact on a child’s risk for obesity. Four types of parent feeding styles have been described: authoritative (responsive and warm with high expectations); authoritarian (not responsive but with high expectations); permissive or indulgent (responsive and warm but lenient with few rules); and negligent (not responsive with few rules). The 4 parenting styles discussed were initially defined by Baumrind (1966) and later expanded by Maccoby and Martin (1983).218,219  (Restrictive feeding was not included as 1 of the parenting styles.)

Authoritative feeding, where parents respond to the child’s cues of hunger and satiety, is considered to be protective against excessive weight gain. Children from authoritative parenting homes have been shown to eat more healthy foods, be more physically active, and have healthier BMI, compared with children raised in homes with authoritarian, permissive or indulgent, or negligent parenting styles.220,221 

One possible mechanism of parenting style’s influence on a child’s weight status is thought to be from interference in the child’s ability to self-regulate their dietary intake. An authoritarian parent, for example, may not respond to a child’s cues for energy intake, resulting in poor ability on the part of the child to self-regulate their own energy intake, and a higher likelihood of overindulging when presented with an opportunity to eat.222,223 

A large cross-sectional study showed that, among preschool- and school-aged children, authoritarian or negligent parenting is associated with a higher risk of obesity,224  whereas authoritative parenting was associated with healthy BMI.221  Among preschoolers, the effect of the parenting feeding style was found to be modulated by poverty, with the effect only being seen among children who were not living in poverty.224 

C.2. Family Home Environment Organization

A systematic review of associations between the organization of the family home environment and childhood obesity found that greater organization of the home environment, which included practices such as having family routines and setting limits, was inversely associated with obesity.225  This relationship was present for younger and older children. Most but not all of the 32 studies included in the review controlled for sociodemographic factors.

C.3. Sugar-Sweetened Beverages

A systematic review of 20 prospective cohort studies and randomized controlled trials from 2013 to 2015 found that sugar-sweetened beverages (SSBs) were positively associated with obesity in children in all but 1 study (96%).226  Based on this review and others demonstrating a link between SSB and multiple other medical and dental diseases, the AAP published a policy statement on SSBs in 2019, calling for broad implementation of policies restricting SSB consumption in children and adolescents.227 

C.4. Portion Sizes

Much of the research on the influence of portion size on children’s intake has been performed in laboratory settings providing a single meal to preschool-aged children. A comprehensive review of this research reported that children who serve or are served larger portions of commonly liked energy-dense foods typically consume larger amounts but cautioned that long-term studies of the effects of larger portions over time on a number of variables, including body weight, are lacking.228 

C.5. Snacking Behavior

A recent systematic review of body fat and consumption of ultra-processed foods (defined as snacks, fast foods, junk foods, and convenience foods) in children and adolescents found a positive association but noted that longer-term studies examining the association of these foods and obesity are needed.229 

C.6. Dining Out and Family Meals

Eating outside of the home has been shown to be associated with higher energy intake in both children and adults.230,231  In the United States, food eaten outside the home is characterized by higher fat content, larger portions, and greater energy intake.230 

In a systematic review of pediatric and adult studies, eating at fast-food establishments was associated with much higher weight gain, compared with eating at other types of restaurants.231 

Take-away food has also been associated with high BMI.231  Hence, eating outside of the home—irrespective of the type of restaurant establishment visited—is associated with higher risk of weight or BMI gain. Conversely, 2 meta-analyses found that increased frequency of eating family meals was associated with lower risk of childhood obesity.232,233 

C.7. Screen Time

Some, but not all, studies report an association between screen time duration, childhood adiposity,234236  and adult BMI.237  Some studies have shown a dose-response effect of screen time and childhood adiposity,235  with screen time greater than 2 hours per day being positively associated with higher risk of overweight or obesity.236  A recent meta-analysis reported 42% greater risk of overweight or obesity with more than 2 hours per day of television (TV) compared with 2 or fewer hours.238 

There is evidence to support the association between screen time and consumption of unhealthy diet and high energy intake.235  The appearance or depiction of food items while engaging in screen time may affect a child’s dietary behavior. A systematic review examining food choice and intake showed that food included in entertainment media affects eating behaviors of children.167  Children and adolescents are more exposed to food and beverage advertisements when watching TV.239  Additionally, increase in screen time may displace physical activity and interfere with sleep.235,240 

Although “screen time” includes TV, computer, video or videogames, mobile phones, and other digital devices, the majority of the studies published examined the effect of TV viewing.235  Male children and adolescents tend to spend more time on media screen devices and other Internet technology than female children and adolescents do.236 

C.8. Sedentary Behavior

The association between sedentary behavior and adiposity has been shown to range from small to inconsistent.241  Studies examining the effect of sedentary behavior alone on weight using accelerometer measures have shown no association between sedentary behavior and obesity. Teasing out the effects of sedentary behavior alone in treatment studies may be challenging, as this is often confounded with other behaviors such as physical activity, screen time, or increased intake of unhealthy foods.241 

C.9. Sleep Duration

Short sleep duration is associated with higher risk of obesity in children.242244  A meta-analysis of prospective cohort studies demonstrated a dose-response inverse association between sleep duration and risk of childhood overweight and obesity.244  Children 13 years and younger with short sleep duration (∼10 hours) had a 76% increased risk of overweight or obesity compared with their counterparts with longer sleep duration (12.2 hours).

Sleep restriction may be associated with increased calorie consumption.245,246  Additionally, fatigue and decreased physical activity has also been associated with short sleep duration. It is unclear whether the inverse association between sleep and adiposity is causal or a consequence of hormonal or metabolic disturbance.247  Although the exact mechanism for this association is unknown, some of the consequences of short sleep duration include hormonal and metabolic alterations—such as increased ghrelin and decreased leptin—which may lead to increased hunger.242 

C.10. Environmental Smoke Exposure

Children exposed to environmental tobacco smoke (ETS) have been found to have higher BMI compared with their nonexposed counterparts, according to a systematic review of ETS exposure and growth outcomes in children up to 8 years of age.248 

C.11. Psychosocial Stress

Psychosocial stress in the prenatal period may have an effect on endocrine function (hypothalamic-pituitary-adrenal axis and glucose–insulin metabolism) in the child’s life course. A meta-analysis showed that prenatal psychological stress was associated with higher risk of childhood and adolescent obesity.249 

Psychosocial and emotional issues may lead to weight gain through maladaptive coping mechanisms, including eating in the absence of hunger to suppress negative emotions, appetite up-regulation, low-grade inflammation, decrease in physical activity, increase in sedentary behavior, and sleep disturbance.154,250,251  Depression has been shown to be a risk factor in both pediatric and adult obesity.251  The association between depression and obesity could be reciprocal, as obesity may increase depression risk.

C.12. Adverse Childhood Experiences

A number of studies have documented an association between ACEs and the development of overweight and obesity. ACEs impact occurs via toxic stress, which occurs “when a child experiences strong, frequent, and/or prolonged adversity—such as physical or emotional abuse, chronic neglect, caregiver substance abuse or mental illness, exposure to violence, and/or the accumulated burdens of family economic hardship—without adequate adult support.”252,253 

ACEs include a history of physical, emotional, or sexual abuse; exposure to domestic violence; household dysfunction from parental divorce or substance abuse; economic insecurity; mental illness; and/or loss of a parent because of death or incarceration.69,254257 

A US study found that cumulative ACEs doubled the risk of children having overweight or obesity, compared with their counterparts with no history of ACEs.258  Unresolved stress and emotional issues may result in maladaptive coping strategies—such as binge eating, eating in the absence of hunger, impulsive eating, and poor sleep hygiene—which may result in further weight gain.

Poverty and associated toxic stresses in utero and early childhood have been suggested to initiate neuroendocrine and/or metabolic adaptations that produce biological phenotypes and obesogenic behaviors that lead to obesity.259,260  These effects may persist throughout the lifetime.260 

D. Individual-Level Influences or Contributors to Obesity

D.1. Genetic Factors

Heritability studies suggest that there is a 40% to 70% genetic contribution to an individual’s obesity risk.261263  Genome-wide association studies have identified 32 loci of significance to obesity predisposition.264  Genetic causes of obesity include both common and rare genetic variants that involve impairment of gene expression or function.264 

D.1.a and D.1.b. Monogenetic Syndromes and Polygenetic Effects

Polygenetic causes of obesity are by far the most common, and single gene defects are rarer causes of obesity. For example, MC4R, a heterozygous mutation, is the most common form of monogenic obesity and accounts for only 2% to 5% of severe obesity in children.265,266  Polygenic inheritance refers to a single inherited phenotypic trait that is controlled by 2 or more different genes. Polygenic variants, on their own, have little effect on an individual’s phenotype. The phenotypic effect manifests only in the presence of, or in combination with, other predisposing factors.

Children with genetic causes of obesity may present with characteristic clinical features that have historically included findings such as short stature, dysmorphic features, developmental delay, skeletal defects, deafness, retinal changes, or intellectual disability. It is important to note that more recently discovered genetic disorders associated with obesity are not necessarily characterized by these findings in childhood; for instance, short stature is not a hallmark of leptin deficiency in children. Table 2 lists selected monogenetic causes and syndromes associated with obesity.

TABLE 2

Genetic Syndromes Associated With Obesity

Genetic Syndrome
Monogenetic disorders  
 MC4R deficiency Increased lean body mass, accelerated linear growth. Hyperinsulinemia. May have lower blood pressure. 
 Leptin deficiency Normal linear growth with reduced adult height. Rapid-onset obesity with hypothalamic dysfunction (hypogonadotropic hypogonadism, hypothyroidism). Alterations in immune function. Responsive to leptin treatment. 
 Leptin receptor deficiency Normal linear growth with reduced adult height. Rapid-onset obesity with Hypothalamic dysfunction (hypogonadotropic hypogonadism, hypothyroidism). Alterations in immune function. Not responsive to leptin therapy. 
 POMC deficiency Accelerated childhood growth. Adrenocorticotropic hormone deficiency, mild hypothyroidism. Red hair, light skin (in non-Hispanic white individuals). 
 Proprotein subtilisin or kexin type 1 deficiency Failure to thrive in early infancy. Hypoglycemia, adrenocorticotropic hormone deficiency. Intestinal malabsorption, diarrhea. 
 SRC1 deficiency Impaired leptin-induced POMC expression. 
Syndromic forms of obesity 
 Prader-Willi syndrome In neonatal period poor feeding, failure to thrive, and hypotonia. By 4–8 y, hyperphagia with food impulsiveness. Short stature. Growth hormone deficiency, hypogonadism. Dysmorphia, intellectual disability, behavioral difficulties. 
 Alstrom syndrome Short stature. Insulin resistance, T2DM, hypogonadism, hyperandrogenism in females, hypothyroidism. Visual impairment, hearing loss, cardiomyopathy, hepatic dysfunction, renal failure. 
 Bardet-Biedl syndrome Normal stature. Hypogonadism, polydactyly, retinal dystrophy, renal malformation, cognitive disabilities, polyuria, and polydipsia. 
 Smith-Magenis syndrome Short stature. Disrupted melatonin signaling. Craniofacial anomalies, intellectual disability, self-injurious behaviors, sleep disturbance. 
 SH2B1 deficiency Hyperinsulinemia, delayed speech and language development, aggressive behavior. 
 Sim1 deficiency Short stature. Hypopituitarism. Neonatal hypotonia, facial dysmorphism, developmental delay. 
 16p11.2 microdeletion syndrome Developmental delay, intellectual disability, autism spectrum disorder, impaired communication, and socialization skills. 
 Brain derived neurotrophic factor deficiency Hyperphagia, impaired short-term memory, hyperactivity, learning disability. Patients with Wilms tumor-aniridia (WAGR syndrome) have subset of deletions on chromosome 11p.12 including brain derived neurotrophic factor locus. 
 Albright’s hereditary osteodystrophy Short stature, round face, brachydactyly, subcutaneous ossifications. Some patients may have mild developmental delay. If inherited from the mother, may be associated with pseudohypoparathyroidism type 1a. 
 Cohen syndrome Hypotonia, intellectual disability, distinctive facial features with prominent upper central teeth, broad nasal tip, smooth or shortened philtrum, thick hair and eyebrows, long eyelashes, retinal dystrophy, acquired microcephaly, joint hyperextensibility. 
 Beckwith-Wiedemann syndrome Macrosomia, macroglossia, hemihyperplasia, anterior abdominal wall defects, visceromegaly, neonatal hypoglycemia, embryonal tumors, renal anomalies. Genetic alteration in chromosome 11p15.5. 
Genetic Syndrome
Monogenetic disorders  
 MC4R deficiency Increased lean body mass, accelerated linear growth. Hyperinsulinemia. May have lower blood pressure. 
 Leptin deficiency Normal linear growth with reduced adult height. Rapid-onset obesity with hypothalamic dysfunction (hypogonadotropic hypogonadism, hypothyroidism). Alterations in immune function. Responsive to leptin treatment. 
 Leptin receptor deficiency Normal linear growth with reduced adult height. Rapid-onset obesity with Hypothalamic dysfunction (hypogonadotropic hypogonadism, hypothyroidism). Alterations in immune function. Not responsive to leptin therapy. 
 POMC deficiency Accelerated childhood growth. Adrenocorticotropic hormone deficiency, mild hypothyroidism. Red hair, light skin (in non-Hispanic white individuals). 
 Proprotein subtilisin or kexin type 1 deficiency Failure to thrive in early infancy. Hypoglycemia, adrenocorticotropic hormone deficiency. Intestinal malabsorption, diarrhea. 
 SRC1 deficiency Impaired leptin-induced POMC expression. 
Syndromic forms of obesity 
 Prader-Willi syndrome In neonatal period poor feeding, failure to thrive, and hypotonia. By 4–8 y, hyperphagia with food impulsiveness. Short stature. Growth hormone deficiency, hypogonadism. Dysmorphia, intellectual disability, behavioral difficulties. 
 Alstrom syndrome Short stature. Insulin resistance, T2DM, hypogonadism, hyperandrogenism in females, hypothyroidism. Visual impairment, hearing loss, cardiomyopathy, hepatic dysfunction, renal failure. 
 Bardet-Biedl syndrome Normal stature. Hypogonadism, polydactyly, retinal dystrophy, renal malformation, cognitive disabilities, polyuria, and polydipsia. 
 Smith-Magenis syndrome Short stature. Disrupted melatonin signaling. Craniofacial anomalies, intellectual disability, self-injurious behaviors, sleep disturbance. 
 SH2B1 deficiency Hyperinsulinemia, delayed speech and language development, aggressive behavior. 
 Sim1 deficiency Short stature. Hypopituitarism. Neonatal hypotonia, facial dysmorphism, developmental delay. 
 16p11.2 microdeletion syndrome Developmental delay, intellectual disability, autism spectrum disorder, impaired communication, and socialization skills. 
 Brain derived neurotrophic factor deficiency Hyperphagia, impaired short-term memory, hyperactivity, learning disability. Patients with Wilms tumor-aniridia (WAGR syndrome) have subset of deletions on chromosome 11p.12 including brain derived neurotrophic factor locus. 
 Albright’s hereditary osteodystrophy Short stature, round face, brachydactyly, subcutaneous ossifications. Some patients may have mild developmental delay. If inherited from the mother, may be associated with pseudohypoparathyroidism type 1a. 
 Cohen syndrome Hypotonia, intellectual disability, distinctive facial features with prominent upper central teeth, broad nasal tip, smooth or shortened philtrum, thick hair and eyebrows, long eyelashes, retinal dystrophy, acquired microcephaly, joint hyperextensibility. 
 Beckwith-Wiedemann syndrome Macrosomia, macroglossia, hemihyperplasia, anterior abdominal wall defects, visceromegaly, neonatal hypoglycemia, embryonal tumors, renal anomalies. Genetic alteration in chromosome 11p15.5. 

Adapted from Pediatric Obesity-Assessment, Treatment, and Prevention: An Endocrine Society Clinical Practice Guideline.268 

Early onset of severe obesity and the presence of hyperphagia are the 2 clinical characteristics that distinguish genetic disorders of obesity. “Early onset” refers to the presence of obesity before age 5. As noted previously, “severe obesity” is defined as BMI ≥ 120% of the 95th percentile for age and sex. “Hyperphagia” is the presence of insatiable hunger in which the individual’s time to satiation is long, the individual’s duration of satiation is shorter, the individual’s feelings of hunger are prolonged, and the individual has a severe preoccupation with food and experiences distress if denied food.267 

D.1.c. Epigenetic Factors

Epigenetic factors can result in alterations in gene expression without alteration in genetic code. These epigenetic factors may modify the interaction of environmental and individual factors in promoting weight gain.269  One of the critical periods in the establishment of the epigenome is considered to be during embryonic development.270  Prepregnancy maternal or paternal obesity, for example, may influence epigenetic changes during subsequent pregnancy, increasing the risk of overweight or obesity in the offspring.269  Other risk factors during pregnancy—such as gestational diabetes or maternal excessive weight gain—may result in epigenetic changes and increase the risk of obesity in the offspring.

D.2. Prenatal Risk Factors

The perinatal environment plays an important role in a child’s later development of overweight or obesity. The mechanisms by which the fetal environment predisposes to the development of obesity are complex and poorly understood. They probably include gene-environment interactions or epigenetic changes attributable to several environmental factors, including maternal diet, physical activity, and/or other environmental contaminants.271,272 

Preterm infants have a greater likelihood of developing childhood obesity.273275  Although the exact mechanisms for this association are uncertain, several risk factors have been postulated, including feeding patterns leading to accelerated weight gain in preterm infants.273 

D.2.a. Parental Obesity

Parental weight is a strong predictor of pediatric obesity. Children are at greatest risk of developing obesity as an adult if at least 1 of their parents has obesity.276  A meta-analysis reported an increased risk of adolescent excess adiposity if either parent had overweight or obesity; the risk increased if both parents had obesity.277  Contributors to this association include genetic, environmental, and behavioral factors or the interaction of these factors, resulting in intergenerational transmission of adiposity.

Maternal BMI is a stronger predictor of childhood and adolescent obesity, compared with paternal obesity.247  Maternal obesity more than doubles the risk of adult obesity (see below). Paternal obesity has been associated with childhood and adolescent obesity and has an additive effect to maternal obesity.278 

D.2.b. Maternal Weight Gain

Prepregnancy adiposity and weight gain during pregnancy are associated with neonatal, infancy, and childhood adiposity.247  The known effect of maternal weight on the offspring led the Institute of Medicine (IOM) to recommend different ranges for weight gain during pregnancy, varying from 12.5 to 18 kg for underweight women to 5 to 9 kg for women with obesity (BMI > 30 kg/m2).279  Yet, between 1997 and 2007, almost half of pregnant US individuals gained more than the weight recommended by the IOM.280 

Excess maternal adiposity has been suggested to affect fetal metabolic programing and make the offspring more vulnerable to the obesogenic environment and increase the risk of obesity. This effect was illustrated in metabolic and bariatric surgery studies, in which children born to mothers with obesity after gastric bypass surgery had lower prevalence of macrosomia and severe obesity at adolescence, compared with their siblings born before the mothers’ surgery.247  Fetal or infant macrosomia and gestational diabetes are some of the complications associated with maternal obesity and serve as risk factors for later onset of obesity and T2DM in the offspring.281 

The exact mechanism by which maternal obesity predisposes to adverse outcomes in the offspring is unclear. It has been suggested that the pathways that are affected control the central regulation of appetite and insulin sensitivity and cardiovascular regulation.281  Alteration of the fetal hypothalamic-pituitary-adrenal axis function has been implicated in programming the metabolic syndrome of the offspring of mothers with obesity.282 

D.2.c. Gestational Diabetes

Infants and children of mothers with gestational diabetes mellitus (GDM) have higher fat mass and BMI than their counterparts whose mothers did not have GDM.283  Adjusting for maternal BMI and other potential confounders, GDM was shown to be associated with childhood obesity with odds ratio of 1.6 to 2.8.284,285  The odds of developing higher waist circumference (≥95th and percentile) in children of mothers with GDM was also found to be higher after controlling for potential confounders (OR, 1.55; 95% CI, 1.03–2.35).285  Sibling studies controlling for shared genetics and environment have shown higher BMIs in offspring exposed to diabetes in utero compared with their unexposed siblings.286 

Although the exact mechanisms of the effect of GDM are not fully understood, it has been postulated that the effect may be mediated through insulin. Pregnant women with GDM have higher insulin resistance compared with pregnant women without GDM.287,288  It has been suggested that maternal insulin resistance and hyperglycemia causes fetal hyperinsulinemia, resulting in excessive fetal growth with associated macrosomia and increased adiposity.287  Maternal hypertriglyceridemia from insulin resistance has also been thought to lead to increased adiposity and birth size even when glucose levels are well-controlled.289  Additionally, maternal diabetes is associated with increased leptin synthesis in the offspring.290  Epigenetic changes in infants of mothers with GDM is another suggested mechanism, affecting gene expression regulation body fat accumulation or other related metabolic pathways.291 

D.2.d. Maternal Smoking

Exposure to ETS has been shown to increase the prevalence of childhood and adolescent obesity.292294  A systematic review and meta-analysis reported an association between prenatal ETS and childhood and adolescent obesity; children exposed to ETS in utero had about 1.9 times greater risk of developing obesity, compared with their nonexposed counterparts.295  Prenatal exposure to the risk from tobacco smoke can occur both directly from smoking mothers and indirectly through ETS, although maternal smoking was found to more strongly predict obesity.

Children exposed to smoking in utero have a dose-dependent increased risk of developing overweight and obesity.296 

D.3. Postnatal Risk Factors

As with the prenatal environment, the postnatal environment is important to the later development of overweight and obesity. In addition to epigenetic mechanisms, behavioral habits begin to get set at an early age. Acceptance of foods, availability of high calorie foods, establishment of the microbiome, and early eating habits are only a few of the proposed mechanisms for postnatal factors to influence later weight status.297 

D.3.a. Birth Weight

Several studies have shown a U-shaped or J-shaped distribution between birth weight and adult BMI.247  Infants with both low (<2500 g) and high (>4000 g) birth weight have been shown to have higher risk of obesity, compared with infants with birth weight between 2500 and 4000 g.298  A high BMI and central adiposity are more prevalent among low-birth weight infants.299  Maternal prepregnancy weight and nutritional status are strong predictors of neonatal outcomes, with underweight prepregnancy increasing the risk of preterm birth and small-for-gestational-age neonates.300  Maternal pregnancy overweight and obesity are significantly associated with large-for-gestational-age babies.300 

D.3.b. Early Breastfeeding Cessation and Formula Feeding

Some, but not all, studies have reported decreased risk of childhood and adolescent obesity in breastfed infants.247  The majority of evidence is derived from observational studies and may include confounding effects.247  Some studies have reported that, compared with bottle-fed infants, breastfed infants are better able to regulate their energy intake and have lower risk of childhood excess weight gain.301  Other studies have also shown that body weight gain is slower in breastfed infants.247 

Breastfeeding has been found to be inversely associated with overweight risk in the first year of life, independent of maternal BMI and SES. Breastfeeding cessation before 6 months was associated with an increased risk of rapid weight gain and overweight by 12 months of age, compared with exclusive breastfeeding.302 

A systematic review of feeding practices associated with rapid infant weight gain found that certain practices (such as overfeeding, inappropriately concentrating formula, placing infants in bed with a bottle, or adding cereal to a bottle) may lead to rapid infant weight gain.303  In addition, infants fed high-protein formulas are at greater risk of elevated BMI later in childhood.247,304 

D.3.c. Rapid Weight Gain During Infancy and Early Childhood

In resource-abundant countries, rapid weight gain in infancy and during the first 2 years of life is associated with higher risk of obesity both in later childhood and in adulthood.247,305  A systematic review and meta-analysis found that children who experienced rapid weight gain from birth to age 2 were up to 3.6 times more likely to have overweight or obesity in childhood or adulthood, with the relationship being stronger between rapid infant weight gain and childhood overweight or obesity.306 

Therefore, rapid weight gain in infancy and early childhood can be viewed both as a risk factor for later excess weight gain and also as a signal, as mentioned previously, for pediatricians and other PHCPs to look for other underlying risk factors and causes for excess weight gain. For instance, early introduction (at younger than 4 months of age) of complementary foods has been found to increase the risk of childhood obesity in several systematic reviews.307,308 

D.3.d. Early Use of Antibiotics

Literature on antibiotic exposure in early life (<2 years) is mixed, with some suggestion that it may slightly increase the risk of childhood and adolescent obesity.309312  The association is stronger with repeated antibiotic exposure,313,314  exposure within the first 6 months of infancy,314  and broad-spectrum antibiotic use.310  With similar antibiotic exposure, boys appear to be more susceptible to weight gain than girls.295  Gut microbiota is usually established during the first years of life; it is hypothesized that the effect of antibiotics is mediated through the alteration of the gut microbiome, which plays a role in energy balance.

D.4. Childhood Risk Factors

Various medical conditions that present in childhood and adolescence are associated with the development and progression of overweight and obesity. Similarly, certain behaviors established in childhood and adolescence can increase the risk of later development of overweight and obesity.

D.4.a. Endocrine Disorders

Endocrine disorders account for less than 1% of all the causes of pediatric obesity. These disorders can be associated with endogenous or exogenous glucocorticoid excess (eg, Cushing syndrome, use of corticosteroid medications). Short stature or growth failure and abnormally high BMI may result from pseudohypoparathyroidism type 1a, growth hormone deficiency, or hypothyroidism.268,315 

D.4.b. Children and Youth With Special Health Care Needs Impacting Nutrition and Physical Activity
D.4.b.1 Children With Developmental and Physical Disabilities

A survey of data from NHANES, the National Health Interview Survey, and the National Survey of Children’s Health found that children with disabilities were from 27% to 59% more at risk for obesity than children without disabilities.316 

In addition to factors experienced by children without disabilities, factors that affect children with disabilities that have been implicated in their greater obesity risk are: more difficulty breastfeeding,317  disrupted appetite regulation,318  weight-gain promoting medications,319,320  food selectivity and sensitivity issues,321  behavioral disorders,322  physical activity limitations,323  and use of food rewards.316  A lack of adaptive physical education or sports,324  and specialized supervision and instruction324  also play a role in increasing obesity risk.

Furthermore, it is important to consider that children with disabilities are at a disadvantage when it comes to obesity treatment strategies that are tailored to their needs. For example, most community or school weight management, nutrition or physical activity interventions are not readily adapted for children with disabilities. Therefore, many children with disabilities do not have the support or strategies that they need to address excess weight. Finally, children may face bullying or stigmatization and bias in school. They may also receive unhealthy incentives as rewards from caregivers increasing their risk for obesity. These systemic trends and biases make providing adequate care for children with disabilities extremely difficult.

D.4.b.2 Children With Autism Spectrum Disorder

Children and youth with autism spectrum disorder (ASD) have a higher risk of developing overweight or obesity. In the United States, children and adolescents 2 to 18 years of age with ASD have a 43.7% greater risk of obesity compared with their counterparts without ASD.325  Although the exact mechanisms through which ASD increases the risk for excess weight gain is unknown, a recent meta-analysis of international studies showed that positive moderators to this association include children of certain races and ethnicities, female biological sex, increased age, and living in the United States.325  This meta-analysis did not control for other risk factors for obesity, however, such as use of antipsychotic medications, food intake challenges, or limited physical activity. Hence, the variable of race could be reflective of a negative SDoH.

Several etiological factors have been postulated to contribute to the association between ASD and obesity, including: genetic variants (eg, 16p11.2 deletion and microdeletion 11p14.1),326,327  prenatal exposure to certain infections or medications,328,329  pre and postnatal exposure to toxins,330,331  maternal diabetes,332  maternal obesity,333  intrauterine growth restriction and preterm birth,334,335  food selectivity,336,337  and physical limitations.338,339 

D.4.b.3 Children With Myelomeningocele

Several studies report increased rates of obesity of children with myelomeningocele,340342  with children having more severe disease tending to have higher BMIs.340  Children and adolescents with myelomeningocele have increased total body fat343  and lower energy expenditure,342  compared with children without myelomeningocele. Risk factors for obesity in this population include limited ambulation, sedentary lifestyle, decreased lean body mass, and reduced resting energy expenditure.344  In addition, children with myelomeningocele may be less likely to have routine weight and height, and primary care providers’ discussions may be lacking with respect to addressing healthy lifestyles.

D.4.c. Attention-Deficit/Hyperactivity Disorder

A systematic review and meta-analysis showed significant association between attention-deficit/hyperactivity disorder (ADHD) and obesity among unmedicated individuals with ADHD—but not among medicated individuals.345  The prevalence of obesity was found to be 40% higher among children and adolescents with ADHD, compared with those without ADHD. This association is not affected by gender or by study setting, country, or quality. Causality between ADHD and obesity could not be inferred from this meta-analysis, because the studies were cross-sectional; however, some prospective studies have shown that ADHD precedes the diagnosis of obesity.346,347 

Some of the known symptoms of ADHD may contribute to weight gain. For example, binge eating, which is a manifestation of impulsivity in individuals with ADHD, may result in increased energy intake. Inattentiveness, another symptom of ADHD, may lead to lack of planning, or of following through on a plan, resulting in missed meals or the consumption of unhealthy meals and snacks.348  Other psychiatric comorbidities that are often associated with ADHD—such as depression, anxiety, and circadian rhythm disturbances—may also be risk factors for obesity.348 

Dopamine plays an important role in some of the addictive behaviors of ADHD and obesity. Functional MRI studies have identified shared neuropsychiatric circuits that are associated with reward, response inhibition, and emotional regulation in obesity, ADHD, and abnormal eating behavior.348 

D.4.d. Weight-Promoting Appetitive Traits

Differences in children’s appetitive traits manifest as early as infancy (for example, suckling behavior) and may become more pronounced when children get exposed to an obesogenic food environment.217  Although the exact reasons why some children have better control of their energy intake is unknown, interaction between genetic predisposition and children’s early environment may explain some of the individual differences in appetitive traits. Parent feeding style, as discussed, has been shown to be of importance.217 

Systematic review and meta-analysis of adult data showed a positive association between eating quickly and higher BMI,349  and in longitudinal studies, faster eating rate was associated with excess weight gain.349  Similarly, 2 cross-sectional pediatric studies have reported a positive association between eating fast and childhood and adolescent obesity.350,351  Eating quickly has been suggested to result in greater energy intake.

A recent American Heart Association policy statement on caregiver influences on young children’s eating behaviors synthesized appetitive traits consistently associated with child adiposity. In addition to more rapid eating pace, these traits include eating in the absence of hunger, high enjoyment of food, low responsiveness to satiety, and low level of restrained eating.352 

D.4.e. Medication Use

Medications within many categories have been associated with weight gain. The magnitude of risk associated with medication use is not fully known; therefore, there is an urgent need for more research in this area as well as mediating strategies. Medications implicated include glucocorticoids, sulfonylureas, insulin, thiazolidinediones, antipsychotics, tricyclic antidepressants, and antiepileptic drugs.353356  In particular, second-generation antipsychotics (ie, risperidone, clozapine, quetiapine, and aripiprazole) can lead to rapid weight gain and comorbidities such as prediabetes, diabetes, and dyslipidemia.357,358 

A recent review discusses the more commonly prescribed medications in children and adolescents with obesity and comorbidities, and offers suggestions on alternative therapeutic agents (Table 3).359 

TABLE 3

Selected Examples of Commonly Prescribed Medications and Weight Gain in Pediatric Practice359 

Medication Obesogenic Medications Nonobesogenic Medications
Allergies and asthma management • antihistamines
• steroids (systemic) 
• inhaled nasal steroids
• montelukast 
Antidepressants • amitriptyline
• nortriptyline
• paroxetine
• sertraline 
• bupropion
• imipramine HCL
• buspirone
• trimipramine maleate
• citalopram
• protriptyline HCL
• desipramine HCL
• trazadone
• venlafaxine
• doxepin
• escitalopram
• fluoxetine
• fluvoxamine 
Antiepileptics • carbamazepine
• gabapentin
• pregabalin
• valproate
• vigabatrin 
• felbamate
• lamotrigine
• levetiracetam
• phenytoin
• topiramate
• zonisamide 
Antipsychotics • aripiprazole
• clozapine
• haloperidol
• mirtazapine
• olanzapine
• perphenazine
• quetiapine
• risperidone
• sertindole
• thioridazine
• ziprasidone 
• molindone
• pimozide 
Anxiolytics not applicable • alprazolam
• lorazepam 
Migraine management • amitriptyline
• atenolol
• divalproex sodium
• flunarizine
• gabapentin
• imipramin
• nortriptyline
• pizotifen
• propranolol 
• lamotrigine
• levetiracetam
• protriptyline
• timolol
• topiramate
• zonisamide 
Mood stabilizers and antimania • carbamazepine
• gabapentin
• lithium
• valproate 
• lamotrigine
• topiramate
• zonisamide 
Psychostimulants not applicable • amphetamine
• methylphenidate
• dextroamphetamine sulfate 
Medication Obesogenic Medications Nonobesogenic Medications
Allergies and asthma management • antihistamines
• steroids (systemic) 
• inhaled nasal steroids
• montelukast 
Antidepressants • amitriptyline
• nortriptyline
• paroxetine
• sertraline 
• bupropion
• imipramine HCL
• buspirone
• trimipramine maleate
• citalopram
• protriptyline HCL
• desipramine HCL
• trazadone
• venlafaxine
• doxepin
• escitalopram
• fluoxetine
• fluvoxamine 
Antiepileptics • carbamazepine
• gabapentin
• pregabalin
• valproate
• vigabatrin 
• felbamate
• lamotrigine
• levetiracetam
• phenytoin
• topiramate
• zonisamide 
Antipsychotics • aripiprazole
• clozapine
• haloperidol
• mirtazapine
• olanzapine
• perphenazine
• quetiapine
• risperidone
• sertindole
• thioridazine
• ziprasidone 
• molindone
• pimozide 
Anxiolytics not applicable • alprazolam
• lorazepam 
Migraine management • amitriptyline
• atenolol
• divalproex sodium
• flunarizine
• gabapentin
• imipramin
• nortriptyline
• pizotifen
• propranolol 
• lamotrigine
• levetiracetam
• protriptyline
• timolol
• topiramate
• zonisamide 
Mood stabilizers and antimania • carbamazepine
• gabapentin
• lithium
• valproate 
• lamotrigine
• topiramate
• zonisamide 
Psychostimulants not applicable • amphetamine
• methylphenidate
• dextroamphetamine sulfate 

This is not an exhaustive list; it is included as an example of medications that may result in weight gain and possible alternatives.

D.4.f. Depression

Children with obesity are more likely to have anxiety and depressive symptoms compared with their peers of healthy weight. It is not clear whether obesity is a risk factor for these symptoms.360,361  Some earlier research reported bidirectional associations between obesity and depression and anxiety. Limitations of some of the studies included small samples; self-reported data on anthropometry; assessment of symptoms based on self-administered questionnaires; and not controlling for potential confounders, such as family history, neuropsychiatric disorders, and SES. A more recent study showed that obesity was a risk factor for anxiety and depression among children and adolescent after adjusting for SES, neuropsychiatric disorders, and family history of anxiety or depression.362 

The association between obesity and depression and anxiety may be attributable to interactions and shared pathophysiological mechanisms between these conditions.363,364  Some of the shared risk factors include genetic, physiologic, and environmental factors. Obesity is associated with subclinical inflammation and oxidative stress, which have been shown to be important etiological factors for depression, and this has been suggested as possible common link between obesity and depression.363  Other factors that can potentially impact the association between obesity and anxiety and depression include sleep disturbance, unhealthy diet, physical activity, antior bullying of children/or bullying of children.

IX. Evaluation of the Pediatric Patient With Overweight or Obesity

A. Evaluation of Patients With Overweight or Obesity

This evaluation is an important part of COT (see COT section in the Treatment section). As with all chronic diseases, a complete history, review of systems (RoS), and physical examination are important for treatment. Specific elements of both history and physical relating to obesity are of special importance. Evaluation of the patient and family’s readiness to change behavior is critical to effectively help with obesity treatment (see algorithm in Appendix 1).

The early and accurate classification of overweight and obesity and identification of obesity-related comorbidities is fundamental to the provision of timely and appropriate treatment (see the Comorbidities section, below). The routine classification of weight status allows for early recognition of abnormal weight gain. This is particularly important because patients—including children and adolescents—often do not perceive overweight and obesity as a health problem.366  Caregivers, families, pediatricians, other pediatric health care providers, and other health care providers367  can also be slow to recognize abnormal weight status, even in the presence of severe obesity.368,369 

Patients and caregivers identify pediatricians and other PHCPs as trusted and preferred sources of information about weight status,370  starting with discussions of feeding practice in infancy and continuing with evaluation of healthy nutrition and activity into adulthood. Pediatricians and other PHCPs are also uniquely qualified to evaluate patients for overweight, obesity, and related comorbidities.

Routine well-child checks (WCCs) in the medical home are an opportune time for the evaluation of a child or adolescent with overweight and obesity, but this can occur during problem-focused visits as well. When the discussion of weight status is normalized and nonstigmatizing, the family and provider can exit a WCC or other visit with a clear and practical plan to improve health and quality of life. Successfully and sensitively treating overweight and obesity can be highly rewarding for both the family and the pediatrician (or other pediatric health care provider), because families suffering from overweight and obesity often have experienced previous shaming or negative experiences with treatment.28,371 

Shaming of children with regard to their weight may happen at school and even at home in misguided efforts to “motivate” the child to adopt healthier behavior. Overt or subtle and unintended bias in health care leads to adverse health, behavioral, and psychological outcomes.61  In addition, when feeding practices are identified as unhealthy, parents may feel blame. It is important, although challenging, for pediatricians and other PHCPs to communicate support and alliance with children, adolescents, and parents as they diagnose and guide obesity treatment.62 

In the AAP statement on obesity bias, steps to provide supportive and nonbiased behavior include recognition of the complex genetic and environmental influences on obesity. Recommendations include use of neutral words like “BMI” or “excess weight” rather than “fat” or “chubby,” use of people-first language (ie, “a child with high weight” or “a child with obesity” rather than “an overweight child” or “an obese child”), an office set-up that accommodates different body sizes, and a private weighing station.28  Ongoing successful communication of support and empathy during obesity treatment is essential to reduce the effect of weight bias, because families will not continue to seek help if they experience stigma.372,373 

B. Medical History

Both a complete medical history and physical examination are necessary to evaluate any patient with a chronic disease. Obesity is no exception and, like other chronic diseases, requires comprehensive evaluation in certain areas of both the history and physical examination, which may require additional time to that which is allocated in a routine visit. The medical history includes the chief complaint, history of the present illness, and family history.

Table 4 summarizes the RoS and provides a valuable framework for investigating a variety of obesity-related conditions.

TABLE 4

Special Considerations in the Review of Systems for the Patient With Overweight or Obesity

System Symptom Possible Obesity-Related Causes
General Poor or slowed linear growth velocity Endocrinologic contributor (eg, hypothyroidism, Cushing syndrome) 
 Hyperphagia from early childhood, developmental delay, obesity onset under age 5 y, or syndromic features Various genetic etiologies (see Table 2, genetic syndromes associated with obesity) 
Respiratory Shortness of breath Obesity-related asthma phenotype, deconditioning 
 Snoring, apnea, disordered sleep Obstructive sleep apnea (OSA) 
Gastrointestinal Asymptomatic vague abdominal pain NAFLD, NASH 
 Heartburn, dysphagia, chest pain, regurgitation Gastroesophageal reflux disease 
 Abdominal pain, enuresis, encopresis, anorexia Constipation 
 Right upper quadrant pain Gall bladder disease 
 Hyperphagia Prader-Willi, other genetic causes 
Endocrine Polyuria, polydipsia Diabetes mellitus (DM) type 1 or 2 
GYN Oligomenorrhea, dysfunctional uterine bleeding Polycystic ovarian syndrome 
Orthopedic Hip, thigh, or groin pain, painful or uneven gait Slipped capital femoral epiphysis (SCFE) 
 Knee pain SCFE, Blount disease 
 Foot pain Increased weight bearing 
 Back pain Increased weight 
 Proximal muscle wasting Cushing syndrome 
Mental health Sadness, depression, anhedonia, body dissatisfaction, school avoidance, poor self-image Depression or anxiety, bullying, sexual, physical, or emotional abuse 
 Impulsive eating, distractibility, hyperactivity ADHD 
 Purging, restricting intake, binge-eating, night eating Disordered eating or eating disorders 
 Flat affect Depression or anxiety 
Urinary Nocturia, enuresis DM, OSA 
Dermatologic Rash Intertrigo 
 Darkened skin on flexural surfaces Acanthosis nigricans 
 Pustules, abscesses Hidradenitis suppurativa 
 Hirsutism in females PCOS 
 Flesh-colored striae Rapid weight gain 
 Purplish striae Cushing syndrome 
 Skin fold irritation Candida 
Neurologic Morning headaches OSA 
 Daytime sleepiness OSA 
 Persistent headache Idiopathic intracranial hypertension (IIH) 
System Symptom Possible Obesity-Related Causes
General Poor or slowed linear growth velocity Endocrinologic contributor (eg, hypothyroidism, Cushing syndrome) 
 Hyperphagia from early childhood, developmental delay, obesity onset under age 5 y, or syndromic features Various genetic etiologies (see Table 2, genetic syndromes associated with obesity) 
Respiratory Shortness of breath Obesity-related asthma phenotype, deconditioning 
 Snoring, apnea, disordered sleep Obstructive sleep apnea (OSA) 
Gastrointestinal Asymptomatic vague abdominal pain NAFLD, NASH 
 Heartburn, dysphagia, chest pain, regurgitation Gastroesophageal reflux disease 
 Abdominal pain, enuresis, encopresis, anorexia Constipation 
 Right upper quadrant pain Gall bladder disease 
 Hyperphagia Prader-Willi, other genetic causes 
Endocrine Polyuria, polydipsia Diabetes mellitus (DM) type 1 or 2 
GYN Oligomenorrhea, dysfunctional uterine bleeding Polycystic ovarian syndrome 
Orthopedic Hip, thigh, or groin pain, painful or uneven gait Slipped capital femoral epiphysis (SCFE) 
 Knee pain SCFE, Blount disease 
 Foot pain Increased weight bearing 
 Back pain Increased weight 
 Proximal muscle wasting Cushing syndrome 
Mental health Sadness, depression, anhedonia, body dissatisfaction, school avoidance, poor self-image Depression or anxiety, bullying, sexual, physical, or emotional abuse 
 Impulsive eating, distractibility, hyperactivity ADHD 
 Purging, restricting intake, binge-eating, night eating Disordered eating or eating disorders 
 Flat affect Depression or anxiety 
Urinary Nocturia, enuresis DM, OSA 
Dermatologic Rash Intertrigo 
 Darkened skin on flexural surfaces Acanthosis nigricans 
 Pustules, abscesses Hidradenitis suppurativa 
 Hirsutism in females PCOS 
 Flesh-colored striae Rapid weight gain 
 Purplish striae Cushing syndrome 
 Skin fold irritation Candida 
Neurologic Morning headaches OSA 
 Daytime sleepiness OSA 
 Persistent headache Idiopathic intracranial hypertension (IIH) 

Adapted from Krebs et al.14 

B.1. Social History

A thorough social history is helpful in the evaluation of the child or adolescent with overweight and obesity. An understanding of family living arrangement will identify resources and barriers that are unique to the patient and their family. Factors such as eating routines and schedules; eating at multiple households; and eating environments, such as family meals, eating at a table, eating with or without screens, are all important elements in assessing contributors to and potential treatment targets for excess weight gain. Determining a family’s relationship with food is also important (eg, Is food a common reward? How is food used in celebrations? Is there pressure for the child to eat?).

Because overweight and obesity tends to cluster in social groups as well as families,374  discussions of neighborhood, school, and friend groups can guide pediatricians, other PHCPs, and families to productive areas for treatment. Social history can heighten an awareness of, and provide insight into, patients who are most exposed to negative SDoHs. Given that inequities exist in obesity risk factors, an SDoH evaluation is important to increase awareness and provide insight in identifying patients who are more vulnerable to obesity. Assessment of SDoHs is also important to contextualize the patient’s and family’s treatment challenges. Standardized tools for use in primary care exist and include the Safe Environment for Every Kid model375  and the Accountable Health Communities Health-Related Social Needs Screening Tool.376 

Being alert to and recognizing SDoHs are the initial steps in trauma-informed care (TIC). ACEs can have a profound impact on health over a lifetime and, as noted, include stressors as diverse as harsh parenting, food insecurity, and parental incarceration. These factors can trigger physiologic abnormalities that increase a patient’s risk for obesity, cancer, and numerous other diseases. TIC is characterized by screening and recognition of these ACEs, responding to them, and working to prevent reexposure to trauma. Initial recognition of the importance of ACEs on health occurred in the field of adult obesity treatment. The importance of TIC and addressing ACEs in pediatric obesity management is ongoing.68,377,378 

B.2. Nutrition and Physical Activity History

Gathering a nutrition history and physical activity history often takes the form of a patient and/or caregiver completing a healthy habits survey before seeing the pediatrician or other pediatric health care provider (Table 5). Electronic health records, waiting room kiosks, and emailed previsit surveys can all be used to help gather this information.

TABLE 5

Assessment Components

Dietary Intake Can Be Addressed by Assessing the Following: Physical Activity Can Be Addressed by Assessing Physical Literacy379 :
Eating outside the home Physical literacy: The motivation, confidence, physical competence, knowledge, and understanding to engage in age-appropriate physical activity for a lifetime. Routine ambient activity is built into daily living. 
Consumption of sweet drinks Sedentary time, especially recreational screen time. 
Portion size Moderate activity levels, characterized by a mild increase in pulse and respiratory rate but still able to talk. 
Meal habits, including skipping meals Vigorous activity levels, characterized by increased breathing, elevated heart rate, or sweating. 
Snack habits 
Fruit and vegetable consumption 
Dietary Intake Can Be Addressed by Assessing the Following: Physical Activity Can Be Addressed by Assessing Physical Literacy379 :
Eating outside the home Physical literacy: The motivation, confidence, physical competence, knowledge, and understanding to engage in age-appropriate physical activity for a lifetime. Routine ambient activity is built into daily living. 
Consumption of sweet drinks Sedentary time, especially recreational screen time. 
Portion size Moderate activity levels, characterized by a mild increase in pulse and respiratory rate but still able to talk. 
Meal habits, including skipping meals Vigorous activity levels, characterized by increased breathing, elevated heart rate, or sweating. 
Snack habits 
Fruit and vegetable consumption 

There are many additional tools to assess nutrition and physical activity. These include: 24-hour recalls, electronic and written food diaries, telephone- and text-prompted diaries, and various smartphone applications that track food intake. Pedometers and other wearable activity monitors can assist with physical activity assessment. Pediatricians and other PHCPs may find some of these applications and tools at their disposal.

Cultural dietary habits, limited English proficiency, and limited literacy levels may influence the accuracy of the tool used. In comparison with adults, physical activity assessment is challenging, because children and adolescents are less reliable in performing recall of performed activity.379  And, because of the greater burden of overweight and obesity on people of certain race and ethnicities, these differences should be acknowledged and any limitations should be mitigated. An example of a healthy habit survey can be found at https://mainehealth.org/-/media/lets-go/files/childrens-program/pediatric-family-practices/full-healthcare-toolkit.pdf. Sensitivity to cultural, economic, and literacy barriers is necessary with the nutrition history and physical activity history, as with other assessments. Furthermore, the presence of eating disorders, obsessive-compulsive disorder, and other mental health conditions may preclude the use of certain tools that require intensive tracking.

B.3. Assessments for Behavioral Health and Disordered Eating Concerns

Because rates of behavioral health illnesses are greater in patients with obesity than other patients, it is important for pediatricians and other PHCPs to evaluate the emotional health of children with overweight and obesity.380  A common comorbidity of obesity in children is weight-based bullying and teasing.28,43  If a patient responds affirmatively when asked if they have ever been teased or bullied about their weight, pediatricians and other PHCPs can consider provision of resources (such as those found at stopbullying.gov ) to the child and parent as well as local counseling referral.

Various in-office tools can be used to address behavioral health disorders seen in greater prevalence in patients with obesity. Overall behavioral functioning can be assessed through the Pediatric Symptom Checklist’s parent or teen versions.381  Evaluation for depression can be conducted through the teen version of the Patient Health Questionnaire 2- or 9- question version.382  Assessment of anxiety by tests such as the General Anxiety Disorder assessment or the Screen for Child Anxiety Related Disorders assessment.383,384  In addition, ADHD can be assessed by the Vanderbilt ADHD Rating Scales.385,386 

As discussed in the AAP clinical reports, “Preventing Obesity and Eating Disorders in Adolescents”387  and “Identification and Management of Eating Disorders in Children and Adolescents,”388  adolescents with obesity may engage in unhealthy practices to lose weight. These practices include skipping meals, using diet pills or laxatives, and inducing vomiting. Therefore, it is important for pediatricians and other PHCPs to evaluate the adolescent with overweight or obesity for these and other related behaviors, and to examine the growth chart for evidence of more rapid than expected decline in BMI.

As noted in the clinical reports above, pediatricians “should be knowledgeable about the variety of risk factors and early signs and symptoms of eating disorders in both male and female children and adolescents. Pediatricians should evaluate patients for disordered eating and unhealthy weight-control behaviors at annual health supervision visits. Pediatricians should evaluate weight, height, and BMI by using age- and sex-appropriate charts, assess menstrual status in girls, and recognize the changes in vital signs that may signal the presence of an eating disorder.”388  For more information on this evaluation, please see the AAP clinical report.388 

B.3.a. Physical Evaluation

A complete physical examination is necessary in the patient with overweight and obesity because of the disease’s complex and multisystem effects. The 2015 article “Physical Examination Findings Among Children and Adolescents with Obesity: An Evidence-Based Review,” by Armstrong et al provides a thorough explanation of special considerations for patients with or at-risk for weight-related illness.365  Pediatricians and other PHCPs are encouraged to reference this AAP-published review. The physical exam also requires focused attention to certain obesity-related findings related to physical evaluation (Table 6). These include:

TABLE 6

Physical Examination Findings in Children and Adolescents With Obesity

Physical Examination Finding Definition Other Causes and Differential
Vital signs Hypertension SBP or DBP ≥ 95th percentile on at least 3 readings Numerous, including essential, stress-induced, renal parenchymal or vascular disease, cardiovascular disorders, obstructive sleep apnea syndrome, substance abuse or medication side effect, pheochromocytoma, anemia, hyperthyroidism, Cushing syndrome, Williams syndrome, Turner syndrome 
 Increased HR Heart rate above upper limit of normal for age Numerous, including fever, anemia, drugs, anxiety, pain, arrhythmia, myocarditis, substrate deficiency, hypovolemic shock, sepsis, anaphylaxis, toxic exposure, hyperthyroidism, Kawasaki disease, acute rheumatic fever, pheochromocytoma 
Anthropometric Changes in height velocity Early height velocity increase True pattern characteristic of obesity, but early height increases can also be: familial tall stature, precocious puberty, gigantism, pituitary gland tumor 
 Changes in weight gain Early weight gain before age 5 y Genetic causes, overfeeding 
  Earlier onset of peak height velocity Slowing of height can be attributable to medications, inflammatory bowel disease, hypothyroidism, hypercortisolism, dysplastic or genetic syndrome, constitutional delay, growth hormone deficiency 
  Slowing of height age 8–18 y  
HEENT Papilledema Edema of the optic disc secondary to increased intracranial pressure (Frisen scale) Intracranial mass lesion, hydrocephalus, cerebral venous thrombosis, medications, autoimmune disorders, anemia, and cranial venous outflow abnormalities 
 Dental caries White, brown, or black spots (noncavitary) or eroded areas of enamel or dentin (cavitary) Developmental disease of the tooth and gum, trauma, infection 
 Tonsillar hypertrophy Tonsils occupy at least 50% of the oropharynx (Brodsky classification 3+ and 4+). Infectious causes 
Chest Gynecomastia >2 cm of breast tissue in biological males Hyperaromatase syndrome; hypogonadism, hyperprolactinemia, chronic liver disease, and medications, particularly H2 antagonists 
 Cervicodorsal hump Fibrous fatty tissue over the upper back and lower neck Endogenous (Cushing syndrome) or exogenous corticosteroid exposure, adrenal carcinoma, adrenal adenoma; HIV with secondary hyperinsulinemia 
Gastrointestinal Liver enlargement (hepatomegaly) Liver span >5 cm in 5-y-olds and 15 cm in adults or liver edge palpable below the right costal margin by >3.5 cm in adults or >2 cm in children Multiple, including hepatitis, storage disorders, infiltrative, impaired outflow, and biliary tract disorders 
Genitourinary Buried penis Suprapubic fat accumulation leading to the appearance of a shortened penile shaft Trapped penis, webbed penis, and micropenis 
Musculoskeletal Gait Collapse into hip (“waddle”), Trendelenburg or antalgic gait (external rotation or out-toeing on affected side) Arthritis, SCFE 
 Lordosis Trunk sway associated with postural adaptations Spondylolisthesis, achondroplasia, muscular dystrophy, other genetic conditions 
 Hip pain and/or limp Knee or hip pain, subacute onset, pain with external rotation of hip Multiple problems present with chronic hip, knee, or thigh pain including slipped capital femoral epiphysis (SCFE), growing pains, femoral neck fracture, groin injury, Perthes disease, osteonecrosis associated with systemic disease, juvenile idiopathic arthritis, reactive arthritis, overuse injuries, chondrolysis, tumors, osteitis pubis 
 Genu varum or valgum Genu varum (bow legs) Tibia vara (Blount disease), rickets, skeletal dysplasia, celiac sprue, collagen disorder and hypermobility syndromes (eg, Marfan syndrome), Loeys-Dietz, classic Ehler Danlos syndrome)15  
  Genu valgum (knock-kneed) Physiologic in children under 6 y; in older children and adolescents, consider postaxial limb deficiency, neoplasms, genetic and metabolic disorders, neurofibromatosis, and vitamin D–resistant rickets 
 Pes planus Rigid versus flexible, sometimes with pain Posterior tibial tendon insufficiency, tarsal coalition, congenital vertical talus, rheumatoid arthritides, trauma, neuropathy 
Skin Acanthosis AN is thickened and darker skin, occasionally pruritic at the nape of the neck (99%), axillae (73%) and, less commonly, groin, eyelids, dorsal hands, and other areas exposed to friction Medication side effect, and uncommonly, visceral malignancy. 
 Hirsutism or acne  Hirsutism: familial, Cushing syndrome, thyroid disorders 
   Acne: physiologic, folliculitis, rosacea 
 Striae Linear, usually symmetrical smooth bands of atrophic skin that initially appear erythematous, progressing to purple then white; perpendicular to the direction of greatest tension in areas with adipose tissue Pregnancy, Cushing syndrome, and topical corticosteroid use 
 Intertrigo Macerated, erythematous plaques in skin folds Inflammatory diseases, metabolic disorders, malignancies (rare in pediatrics), and various infections by site 
 Pannus Excess skin and subcutaneous fat below the umbilicus Pregnancy, malignancy 
Physical Examination Finding Definition Other Causes and Differential
Vital signs Hypertension SBP or DBP ≥ 95th percentile on at least 3 readings Numerous, including essential, stress-induced, renal parenchymal or vascular disease, cardiovascular disorders, obstructive sleep apnea syndrome, substance abuse or medication side effect, pheochromocytoma, anemia, hyperthyroidism, Cushing syndrome, Williams syndrome, Turner syndrome 
 Increased HR Heart rate above upper limit of normal for age Numerous, including fever, anemia, drugs, anxiety, pain, arrhythmia, myocarditis, substrate deficiency, hypovolemic shock, sepsis, anaphylaxis, toxic exposure, hyperthyroidism, Kawasaki disease, acute rheumatic fever, pheochromocytoma 
Anthropometric Changes in height velocity Early height velocity increase True pattern characteristic of obesity, but early height increases can also be: familial tall stature, precocious puberty, gigantism, pituitary gland tumor 
 Changes in weight gain Early weight gain before age 5 y Genetic causes, overfeeding 
  Earlier onset of peak height velocity Slowing of height can be attributable to medications, inflammatory bowel disease, hypothyroidism, hypercortisolism, dysplastic or genetic syndrome, constitutional delay, growth hormone deficiency 
  Slowing of height age 8–18 y  
HEENT Papilledema Edema of the optic disc secondary to increased intracranial pressure (Frisen scale) Intracranial mass lesion, hydrocephalus, cerebral venous thrombosis, medications, autoimmune disorders, anemia, and cranial venous outflow abnormalities 
 Dental caries White, brown, or black spots (noncavitary) or eroded areas of enamel or dentin (cavitary) Developmental disease of the tooth and gum, trauma, infection 
 Tonsillar hypertrophy Tonsils occupy at least 50% of the oropharynx (Brodsky classification 3+ and 4+). Infectious causes 
Chest Gynecomastia >2 cm of breast tissue in biological males Hyperaromatase syndrome; hypogonadism, hyperprolactinemia, chronic liver disease, and medications, particularly H2 antagonists 
 Cervicodorsal hump Fibrous fatty tissue over the upper back and lower neck Endogenous (Cushing syndrome) or exogenous corticosteroid exposure, adrenal carcinoma, adrenal adenoma; HIV with secondary hyperinsulinemia 
Gastrointestinal Liver enlargement (hepatomegaly) Liver span >5 cm in 5-y-olds and 15 cm in adults or liver edge palpable below the right costal margin by >3.5 cm in adults or >2 cm in children Multiple, including hepatitis, storage disorders, infiltrative, impaired outflow, and biliary tract disorders 
Genitourinary Buried penis Suprapubic fat accumulation leading to the appearance of a shortened penile shaft Trapped penis, webbed penis, and micropenis 
Musculoskeletal Gait Collapse into hip (“waddle”), Trendelenburg or antalgic gait (external rotation or out-toeing on affected side) Arthritis, SCFE 
 Lordosis Trunk sway associated with postural adaptations Spondylolisthesis, achondroplasia, muscular dystrophy, other genetic conditions 
 Hip pain and/or limp Knee or hip pain, subacute onset, pain with external rotation of hip Multiple problems present with chronic hip, knee, or thigh pain including slipped capital femoral epiphysis (SCFE), growing pains, femoral neck fracture, groin injury, Perthes disease, osteonecrosis associated with systemic disease, juvenile idiopathic arthritis, reactive arthritis, overuse injuries, chondrolysis, tumors, osteitis pubis 
 Genu varum or valgum Genu varum (bow legs) Tibia vara (Blount disease), rickets, skeletal dysplasia, celiac sprue, collagen disorder and hypermobility syndromes (eg, Marfan syndrome), Loeys-Dietz, classic Ehler Danlos syndrome)15  
  Genu valgum (knock-kneed) Physiologic in children under 6 y; in older children and adolescents, consider postaxial limb deficiency, neoplasms, genetic and metabolic disorders, neurofibromatosis, and vitamin D–resistant rickets 
 Pes planus Rigid versus flexible, sometimes with pain Posterior tibial tendon insufficiency, tarsal coalition, congenital vertical talus, rheumatoid arthritides, trauma, neuropathy 
Skin Acanthosis AN is thickened and darker skin, occasionally pruritic at the nape of the neck (99%), axillae (73%) and, less commonly, groin, eyelids, dorsal hands, and other areas exposed to friction Medication side effect, and uncommonly, visceral malignancy. 
 Hirsutism or acne  Hirsutism: familial, Cushing syndrome, thyroid disorders 
   Acne: physiologic, folliculitis, rosacea 
 Striae Linear, usually symmetrical smooth bands of atrophic skin that initially appear erythematous, progressing to purple then white; perpendicular to the direction of greatest tension in areas with adipose tissue Pregnancy, Cushing syndrome, and topical corticosteroid use 
 Intertrigo Macerated, erythematous plaques in skin folds Inflammatory diseases, metabolic disorders, malignancies (rare in pediatrics), and various infections by site 
 Pannus Excess skin and subcutaneous fat below the umbilicus Pregnancy, malignancy 

Adapted from Table 4 and used with permission by Armstrong et al. et al.365  HEENT, head, eye, ear, nose, and throat examination.

C. Assessment of Patient Readiness to Change

“Readiness to change” refers to a patient’s interest in changing a behavior (Importance) and their belief that they can bring about this change (Confidence). This evaluation is important when discussing healthy nutrition and activity with patients who have BMI in the healthy range; it assumes even greater importance with a patient and family who are struggling with overweight, obesity, or severe obesity where health concerns are elevated. This evaluation of readiness to change is central to deciding how and when to embark on obesity treatment. Motivational interviewing (MI), discussed in the Treatment section, provides a useful framework for evaluating and discussing a patient’s readiness to change.392 

Readiness to change, perceptions of weight status, health challenges, nutrition habits, and access to physical activity are influenced by familial, cultural, and socioeconomic factors. For this reason, understanding these factors is beneficial in forging a productive relationship with children and their families. It is also important to remember that patients and families care about their health and their child’s health regardless of race, ethnicity, and/or SES. Caregivers should be reminded that the presence of overweight or obesity is NOT an indication of poor parenting.

D. Laboratory Evaluation

Based on BMI classification—and augmented by findings in the history, physical examination, and patient readiness to change assessments—laboratory evaluation of the patient represents the next important step in evaluation. This laboratory evaluation and its connection to the delineation of more common comorbid illnesses is described in the Comorbidities section. Other laboratory evaluations can be performed as clinically indicated.

X. Comorbidities of Pediatric Overweight and Obesity

Introduction to Comorbidities

Children and adolescents with obesity have increased prevalence of comorbidities, and a greater risk for obesity in adulthood, morbidity, and premature death.36,393395  The risk for obesity-related comorbidities increases with age and severity of obesity and prevalence varies by ethnicity and race.396  For example, there is a higher prevalence of NAFLD in Hispanic children and a lower prevalence in Black children.397,398  AI/AN, Black, and Hispanic youth have higher prevalence of prediabetes and diabetes, compared with white youth.399,400  Pediatricians and other PHCPs need to recognize that the association between ethnicity and race and obesity and related comorbidities in both children and adults likely reflects the impact of epigenetic, social, and environmental factors, such as SDoHs, low SES, exposure to structural racism, neighborhood deprivation, and inadequate built environment in these subpopulations.399,401408 

Obesity and related comorbidities should be evaluated concurrently with an obesity-specific history and review of systems, family and social history, physical examination, and laboratory testing. This evaluation provides pediatricians and other PHCPs with an opportunity to assess for both the etiology and complications of obesity (see the Evaluation section). Pediatricians and other PHCPs need to take into consideration patient-specific factors that may increase the risk for comorbidities. For example, prediabetes and diabetes occur more frequently among children who are 10 years and older, are in early pubertal stages, or have a family history of T2DM.399,400,409 

There is compelling evidence that obesity increases the risk for comorbidities and that weight loss interventions can improve comorbidities.80,396,410  Thus, the recommendations for comorbidity evaluation uses input from the technical report on comorbidities for the prevalence, age, and weight category396  associated with comorbidities, and the technical report on treatment of obesity intervention outcomes on dyslipidemia, prediabetes and diabetes, HTN, and NAFLD.80  Studies on optimal age, frequency, benefits, and harms of evaluating for comorbidities for children with obesity remain limited. To address when to begin evaluation, what tests to obtain, and frequency of testing, input from other clinical practice guidelines was also considered.87,88,90,411,412 

The KASs in this section are limited to comorbidities addressed in the technical reports and/or guidelines from professional organizations or societies. Consensus recommendations are included to cover the breadth of relevant comorbidities associated with pediatric overweight and obesity and to provide context for implementation. Each KAS or consensus recommendation is drawn from the technical reports, an extensive review of the literature, and clinical guidelines or position statements from premier organizations or professional societies in the field. The inclusion criteria for the guidelines and position statements are in Table 7. When there was more than 1 guideline from the same organization or professional society, the most recent guideline was given precedence. Other considerations for inclusion were guidelines supported by a technical report or endorsed by the AAP.

TABLE 7

Inclusion Criteria for Guidelines or Position Statements Reviewed for Comorbidities

Inclusion Criteria
• Clinical guideline or position statement was published in the last 15 y. 
• The organization or professional society is recognized as the leading scientific expert in the field. 
• The clinical guideline or position statement uses an established grading matrix to assess the evidence. 
Inclusion Criteria
• Clinical guideline or position statement was published in the last 15 y. 
• The organization or professional society is recognized as the leading scientific expert in the field. 
• The clinical guideline or position statement uses an established grading matrix to assess the evidence. 

The following section is divided into 3 sections:

Recommendations for reevaluation and initial management of common comorbidities are in Appendix 3.

A. Laboratory Evaluation of Obesity-Related Comorbidities for Children With Overweight and Obesity

The 2007 AAP Expert Committee on Child Obesity recommended laboratory evaluation for children with obesity for dyslipidemia, prediabetes, and NAFLD starting at 10 years by obtaining a fasting lipid panel, fasting glucose, alanine transaminase, and aspartate transaminase levels every 2 years.92  For children with overweight, the recommendation was only for a fasting lipid panel unless additional risk factors were present (such as family history of obesity-related diseases, elevated BP, elevated lipid levels, or tobacco use).14  KASs 3 and 3.1 build on the 2007 recommendations—taking into account recent studies, guidelines, and pediatrician and other PHCP behaviors—while balancing the harm versus benefit of evaluation at the individual and population levels.

Children ≥10 Years

To encourage a pragmatic and efficient evaluation strategy, KAS 3 and 3.1 recommend that, for children with obesity, evaluation for lipid abnormalities, abnormal glucose metabolism, and liver dysfunction be obtained at the same time and begin at age 10 years. The expectation is that pediatricians and other PHCPs will find it easier to adhere to recommendations when all tests are obtained at the same time. They may order fasting laboratory tests for the evaluation, because a fasting lipid panel is still the recommended test to evaluate for dyslipidemia for children and adolescents with overweight and obesity (see the dyslipidemia section, below, for additional information).

Children 2–9 Years

For children 2 to 9 years of age with obesity, evaluation for lipid abnormalities may be considered (KAS 3.1). This recommendation aligns with the 2011 National Heart Lung Blood Institute (NHLBI) Expert Panel on Integrated Guidelines for Cardiovascular Health and Risk Reduction in Children and Adolescents.86  In population-based studies, lipid abnormalities occur in children younger than 10 years, with higher rates among children with obesity.80,395,417  High triglycerides (TG) and low high-density lipoprotein (HDL) levels (the typical pattern of dyslipidemia that occurs with obesity) have been reported in children with obesity as young as 3 years.395 

As the risk profile for NAFLD and diabetes mellitus in children younger than 10 years is lower (especially in the absence of severe obesity), obtaining tests for abnormal glucose metabolism or liver function is not universally recommended for this population.88,90,415,418 

Detailed and specific recommendations are provided in the following sections on dyslipidemia, prediabetes and diabetes mellitus, and NAFLD.

Children With Overweight

For children 10 years and older with overweight, evaluating for lipid abnormalities is recommended in the absence of additional risk factors (KAS 3).86,412  For evaluation of type 2 diabetes mellitus (T2DM), additional risk factors need to be considered, which include: family history, history of gestational diabetes, signs of insulin resistance (such as acanthosis nigricans), and use of obesogenic psychotropic medication.90,358,419  For NAFLD, additional risk factors include family history of NAFLD, central adiposity, signs of insulin resistance, prediabetes or diabetes mellitus, dyslipidemia, and sleep apnea.88 

Considerations for Testing

Among children with obesity, there is clustering of comorbidities, a higher risk profile for more severe disease and/or progression than may be commonly or previously recognized.396,421423  For example, regardless of the definition used for metabolic syndrome, the prevalence is 0% to 4.7% among children with healthy weight and increases to 14.5% to 35% among children and adolescents with obesity.396  In a cohort of 675 children with NAFLD from 12 clinical centers across the United States, one-third had T2DM or prediabetes,422  2 conditions that have significant morbidity in childhood. Adolescents with severe obesity—who have comparable BMI and metabolic profiles as adults—are more likely to present with advanced liver damage and severe systemic inflammation, suggesting that pediatric NAFLD may be more aggressive.424  Similarly, in T2DM, children have a more rapid rate of progression of islet β cell failure and dysglycemia compared with adults.425427 

Concerns about overtesting and cost are warranted but are balanced by the significant impact of obesity and comorbidities on morbidity and mortality. Almost half (43%) of children and adolescents with obesity have at least 1 abnormal lipid level,417  and 1 in 5 US adolescents have prediabetes,423  which are both precursors for future cardiometabolic disease. Although the prevalence of T2DM in children is low, at approximately 1%, the incidence has increased from 9 in 100 000 in 2002 to 13.8 in 100 000 in 2015, a worrisome annual percentage change of 4.8%.399  NAFLD is considered one of the most common chronic liver diseases in children88,397,398,428  and occurs more frequently in male children, older children, and Hispanic children.397,429 

Finally, although obesity prevalence rates continue to rise, the rate of evaluating for obesity or comorbidities in practice is low—suggesting that any concerns about overtesting are likely to be more theoretical than real.3,394,430432 

See Appendix 3 for information on frequency of testing for comorbidities.

B. Concurrent Treatment of Obesity and Obesity-Related Comorbidities

There is substantial evidence to support concurrent treatment of obesity and comorbidities to achieve weight loss, avoid further weight gain, and improve obesity-related comorbidities. The majority of studies reviewed in the technical report on comorbidities396  demonstrate an association between overweight and/or obesity, severity of obesity, and higher prevalence of comorbidities. Studies also report improvement in comorbidities with intensive lifestyle treatment, weight loss medication, and/or bariatric surgery.80,126,438  Specifically, cardiometabolic markers improved significantly in children with obesity who underwent intensive pediatric obesity treatment of 3 to 6 months, which provides an opportunity for clinicians to emphasize health outcomes of lifestyle management.80,410,439  Interventions that meet the intensity or “dose” threshold of 26 hours or more over 2 to 12 months can lead to clinically significant improvements in BMI,79  and decreases in BMI can lead to clinically meaningful improvements in comorbidities.440444 

Guidelines for dyslipidemia, T2DM, NAFLD, and HTN all recommend lifestyle treatment of the primary management of the comorbidity.8688,90,414,415,419,420  Although the specific dietary recommendation may differ slightly (eg, CHILD-1 and 2 for dyslipidemia, low-glycemic diet for prediabetes, limiting sugary beverages for NAFLD, and a Dietary Approaches to Stop Hypertension [DASH] Diet for elevated BP), there is overlap between the dietary recommendations and all comorbidities improve with weight stabilization and reduction.80,410,436 

Children are often seen at least once a year for WCCs, at which the pediatrician or other pediatric health care provider reviews the growth chart, provides anticipatory guidance on growth, feeding, nutrition, sedentary screen time, and participation in physical activity. At a minimum, the WCC can include evaluation for comorbidities for children with overweight and obesity, and anticipatory guidance on risk for comorbidities with increasing BMI or obesity. It may be helpful for pediatricians and other PHCPs to include the diagnosis of obesity to the problem list to heighten awareness and remind providers to address weight concerns at subsequent clinic encounters.445,446  In a large adult study, documentation of an obesity diagnosis on a problem list was independently predictive of at least 5% weight loss.445  To avoid any harmful effects related to potential weight bias and stigma, however, pediatricians and other PHCPs need to be mindful of how this diagnosis is conveyed to the child and/or caregiver.28 

There may also be a potential benefit for improved weight outcomes with comorbidity evaluation. In adult studies, identifying obesity-related comorbidities has been shown to be a motivating factor to address weight concerns.447449  The evidence in pediatrics is, however, sparse and inconsistent.434,450  Adolescents identify a desire for improved health as a primary motivation for change.451  Another study analyzed clinic records of 4000 youth aged 10 to 18 years with overweight or obesity in an academic primary care network and found that youth who were evaluated (n = 2815) with a glycosylated hemoglobin (HbA1c) had a decrease in BMI-z slope per year after the HbA1c test compared with similar peers (n = 2087) who had not been evaluated. Among those who had an HbA1c test, the decline in BMI-z slope per year was greater for youth with HbA1c in the prediabetes-range.434  An earlier study with a similar pediatric clinic population but a smaller sample size (n = 128) did not find a positive effect on BMI change following cholesterol evaluation.450  There is a need for more studies before definitive conclusions can be reached about whether evaluating families for comorbidities increases engagement, adoption of healthy choices, and weight loss or has unintended negative effects.

C. Specific Guidelines for Initial Evaluation for Comorbidities

The following sections provide specific recommendations on initial comorbidity evaluation. Guidance on repeat evaluation and initial comorbidity management may be found in Appendix 3.

C1. Dyslipidemia

Children and adolescents with overweight and obesity have increased prevalence of abnormal lipid levels.396  The combination of hypertriglyceridemia and low high-density lipoprotein (HDL) levels, driven largely by underlying insulin resistance, is the most common type of dyslipidemia seen with overweight and obesity. Children and adolescents with overweight and obesity can also have elevated total cholesterol and low-density lipoprotein (LDL) levels.86  NHANES data from 2011 to 2014 showed that prevalence of abnormal lipid level was 3 times higher among children and adolescents with obesity, compared with those with a healthy BMI (43% vs 14%).417 

Studies indicate that cardiovascular risk factors track from childhood into adult life and that lifestyle treatments can improve outcomes with respect to these risk factors.393,413,452  Being aware of the association of these “silent” cardiovascular comorbidities with overweight and obesity—as well as their persistence into adulthood with potential serious health consequences—obliges pediatricians and other PHCPs to perform laboratory testing, educate patients and families about the long-term risks of cardiovascular disease and provide nutrition and activity counseling.

This KAS is supported by both the 2011 NHLBI Expert Panel on Integrated Guidelines for Cardiovascular Health and Risk Reduction in Children and Adolescents and 2018 American Heart Association and American College of Cardiology Guidelines, which recommend evaluation for early risk of atherosclerotic cardiovascular disease and counseling on risk-reduction behaviors in children and adolescents.86,411  Evaluation for dyslipidemia with obesity is recommended for younger children, as well as for children 10 years and older. Although data are limited in young children, 1 population-based study showed that 10% of children with obesity aged 3 to 5 years have elevated TG and low HDL levels.395 

In addition to obesity, other risk factors for dyslipidemia include cigarette use, HTN, diabetes, and a family history of cardiovascular disease in a first- or second-degree relative (≤55 years for males and ≤65 years for females) with a history of myocardial infarction, sudden death, or HTN.86,437  All of these conditions warrant laboratory evaluation and may help guide clinical decisions for assessment of dyslipidemia in younger children. Additionally, awareness of an association of social factors, specifically ACEs, with cardiovascular risk factors is important.455 

C.1.a. Laboratory Tests for Diagnosis of Dyslipidemia

The NHLBI expert panel recommends a fasting lipid panel for evaluation of dyslipidemia for children with overweight and obesity.86  Because dietary fats and carbohydrates (particularly simple sugars) increase serum TG concentrations, 8 to 12 hours of fasting before testing is recommended.456  Given that a combination of high TG and low HDL cholesterol is the most common pattern of dyslipidemia observed in children with overweight and obesity, the recommendation to obtain a fasting lipid panel is important, because nonfasting TG levels will not be accurate.86 

For practical purposes, a nonfasting lipid panel using the non-HDL level may be easier to obtain for routine evaluation in the primary care setting. The non-HDL level is the total cholesterol minus the HDL cholesterol level. If the non-HDL cholesterol level is abnormal (non-HDL ≥145 mg/dL) and/or the HDL level is <40 mg/dL, a fasting lipid panel needs to be obtained for diagnosis.412  The nonfasting lipid panel is recommended for all children 9 to 11 years of age to evaluate for familial hypercholesterolemia.86  Estimates are that approximately 25% of children would be referred for a fasting lipid panel because of elevated non-HDL lipid evaluation.457  Because of the elevated risk of lipid abnormality among youth with overweight and obesity, a fasting lipid panel is recommended. See the implementation guide for additional information.

The cut-off criteria for lipids in the 2011 NHLBI guidelines are the same across different age groups, except for triglycerides, as indicated in Table 8.

TABLE 8

NHLBI Criteria for Lipid Testing Results

Lipid Category Low (mg/dL) Acceptable (mg/dL) Borderline High (mg/dL) High (mg/dL)
Total cholesterol — <170 170–199 ≥200 
LDL cholesterol — <110 110–129 ≥130 
HDL cholesterol <40 >45  — 
Triglycerides     
 0–9 y — <75 75–99 ≥100 
 10–19 y — <90 90–129 ≥130 
Non-HDL cholesterol — <120 120–144 ≥145 
Lipid Category Low (mg/dL) Acceptable (mg/dL) Borderline High (mg/dL) High (mg/dL)
Total cholesterol — <170 170–199 ≥200 
LDL cholesterol — <110 110–129 ≥130 
HDL cholesterol <40 >45  — 
Triglycerides     
 0–9 y — <75 75–99 ≥100 
 10–19 y — <90 90–129 ≥130 
Non-HDL cholesterol — <120 120–144 ≥145 

Adapted from the Expert Panel on Integrated Guidelines for Cardiovascular Health.86  —, not applicable.

See Appendix 3 for information on frequency of laboratory testing and information about initial management of dyslipidemia.

C.2. Prediabetes and Type 2 Diabetes Mellitus

T2DM is now increasingly diagnosed in the pediatric population. Between 2002 and 2015, the incidence of T2DM among 10- to 19-year-olds in the United States increased from 9.0 to 13.8 per 100 000.290,399,458  Based on the 2005 to 2016 NHANES, 1 in 5 adolescents (12–18 years) have prediabetes.423  Although uncommon, T2DM has been diagnosed in children younger than 10 years, some as young as 4 years of age.459,460  For this reason, pediatricians and other PHCPs should consider risk factors and symptoms of altered glucose metabolism in all ages (eg, polydipsia, polyphagia, polyuria, blurred vision, unexplained weight loss).

Because obesity is a strong predictor for developing prediabetes and T2DM,423,461,462  pediatricians and other PHCPs need to have an increased index of suspicion when caring for children with obesity, especially in the presence of other risk factors (Table 9).90,408,414,415,463  Both genetics and SDoHs account for some of the racial and ethnic disparities observed in the incidence of T2DM.401,408 

KAS 2. Pediatricians and other PHCPs should evaluate children 2 to 18 y of age with overweight (BMI ≥ 85th percentile to <95th percentile) and obesity (BMI ≥ 95th percentile) for obesity-related comorbidities by using a comprehensive patient history, mental and behavioral health screening, SDoH evaluation, physical examination, and diagnostic studies.

Aggregate Evidence Quality Grade B
Benefits Early detection and treatment can reduce future serious sequelae, detection of comorbidity may motivate treatment engagement. 
Risks, harm, costs Increased anxiety, overtesting, time needed for counseling, potential false-negative or false-positive tests, costs of tests. 
Benefit-harm assessment Potential to identify and manage comorbidities that have short and long term serious sequelae exceeds potential harm especially for high-risk patients. 
Intentional vagueness Frequency of evaluation, patient level of risk. 
Role of patient preferences Family history, families’ concern about the test, ease and accessibility for testing must be considered. 
Exclusions ≤24 mo old. 
Strengths Strong recommendation. 
Key references 80, 365  
Aggregate Evidence Quality Grade B
Benefits Early detection and treatment can reduce future serious sequelae, detection of comorbidity may motivate treatment engagement. 
Risks, harm, costs Increased anxiety, overtesting, time needed for counseling, potential false-negative or false-positive tests, costs of tests. 
Benefit-harm assessment Potential to identify and manage comorbidities that have short and long term serious sequelae exceeds potential harm especially for high-risk patients. 
Intentional vagueness Frequency of evaluation, patient level of risk. 
Role of patient preferences Family history, families’ concern about the test, ease and accessibility for testing must be considered. 
Exclusions ≤24 mo old. 
Strengths Strong recommendation. 
Key references 80, 365  
TABLE 9

Other Risk Factors for Prediabetes and T2DM90,358,415,419 

Risk Factors
• Maternal history of diabetes or gestational diabetes 
• Family history of diabetes in first- or second-degree relative 
• Signs of insulin resistance or conditions associated with insulin resistance (acanthosis puberty nigricans, hypertension, dyslipidemia, polycystic ovary syndrome, or small-for-gestational-age birth weight) 
• Use of obesogenic psychotropic medications 
Risk Factors
• Maternal history of diabetes or gestational diabetes 
• Family history of diabetes in first- or second-degree relative 
• Signs of insulin resistance or conditions associated with insulin resistance (acanthosis puberty nigricans, hypertension, dyslipidemia, polycystic ovary syndrome, or small-for-gestational-age birth weight) 
• Use of obesogenic psychotropic medications 

The pathogenesis of prediabetes and T2DM is a peripheral and hepatic resistance to insulin accompanied by progressive loss of islet cell function. Insulin resistance, when assessed by the homeostatic model assessment of insulin resistance test, varies across weight categories, with highest levels observed among children with severe obesity.396  Some children with T2DM have rapidly progressive disease, which underscores the need for early identification and intensive treatment in collaboration with a pediatric endocrinologist.425 

C.2.a. Laboratory Tests for the Diagnosis of Prediabetes and T2DM

Testing for T2DM should always be performed if there is suspicion of hyperglycemia in a patient with symptoms and signs of hyperglycemia, such as new onset thirst (polydipsia), frequent urination (polyuria) or new onset bedwetting, excessive hunger and eating (polyphagia), blurred vision, unexplained or unexpected weight loss, or fatigue.

Diagnostic tests for prediabetes and T2DM are fasting plasma glucose (FPG), 2-hour plasma glucose after oral glucose tolerance test (OGTT), and HbA1c.90  There are several clinical guidelines that do not recommend one test over the other for evaluation.90,268,415,416,419,420,465  Pediatricians and other PHCPs need to be aware of the strengths and shortfalls of each test and take patient preferences and test accessibility into consideration. In addition, the concordance between all 3 tests is imperfect.416  For instance, the FPG is highly reproducible; the OGTT, which does not fare as well on reproducibility, is effective in identifying dysglycemia. This is a good reason to use the OGTT as a confirmation test if the initial test result is equivocal.466470  The OGTT, however, may not be readily available at some medical settings, requires fasting before the test, lasts at least 2 hours, and includes an unpalatable glucose drink—all of which are factors that can limit its use in pediatric outpatient settings as an evaluation test.

The HbA1c test is easy to obtain as fasting is not required. It provides a measure of chronic hyperglycemia, and use of the test has been shown to increase evaluation for T2DM in primary care settings.471  It is also the recommended test for monitoring prediabetes.90,414416,418,464,472  The sensitivity of HbA1c for diagnosing diabetes is lower in children473  when compared with adults.473,474  Pediatricians and other PHCPs also need to be aware that HbA1c levels can be 0.1% to 0.2% higher in individuals with iron deficiency anemia.475,476 

Fasting insulin is not recommended for diagnosis of prediabetes or T2DM because the levels are highly variable and do not reliably correlate with the level of insulin resistance.268,477 

The cut-off values are similar for pediatric and adult populations, as illustrated in Table 10, above. If the results are unequivocally high and indicative of T2DM, obtaining a second or repeat confirmatory test is not recommended; instead, treatment should be initiated.90,415  Guideline recommendations for tracking glycemic control over time use the HbA1c test; however, the FPG can be substituted using the cut-off criteria in Table 10. See the implementation guide for further discussion on use of OGTT or FBG tests.90,414,415,419,464 

TABLE 10

Criteria for Diagnosing Prediabetes and T2DM90 

Prediabetes or Impaired Glucose Tolerance Diabetes Mellitusa
Fasting plasma glucose (FBG)b 100–125 mg/dL ≥126 mg/dL 
2-h plasma glucose (OGTT)c 140–199 mg/dL ≥200 mg/dL 
Random plasma glucose (RBG)d Not applicable ≥200 mg/dL 
HbA1ce 5.7% to 6.4% ≥6.5% 
Prediabetes or Impaired Glucose Tolerance Diabetes Mellitusa
Fasting plasma glucose (FBG)b 100–125 mg/dL ≥126 mg/dL 
2-h plasma glucose (OGTT)c 140–199 mg/dL ≥200 mg/dL 
Random plasma glucose (RBG)d Not applicable ≥200 mg/dL 
HbA1ce 5.7% to 6.4% ≥6.5% 
a

In the absence of unequivocal hyperglycemia, diagnosis is confirmed if 2 different tests are above threshold or a single test is above threshold on 2 separate occasions.

b

Fasting for at least 8 h with no calorie intake.

c

Oral glucose tolerance test (OGTT) using a load 1.75 g/kg of body weight of glucose with a maximum of 75 g.

d

In patients with hyperglycemic crises or classic symptoms of hyperglycemia (eg, polyuria, polydipsia).

e

Glycosylated hemoglobin (HbA1c) is the preferred test for monitoring prediabetes.478 

See Appendix 3 for more information on frequency of evaluation and on initial management of prediabetes and T2DM.

C.3. Nonalcoholic Fatty Liver Disease

NAFLD is a chronic liver disease marked by steatosis (fat accumulation), inflammation, and fibrosis. The underlying pathogenesis is insulin resistance, which alters the process of fat oxidation in the liver, increasing oxidative stress and inflammation—with resultant liver damage. Among children with obesity, rates as high as 34% have been reported.429 

Three diagnostic terms are used to describe the histology of the disease progression: NAFLD, nonalcoholic fatty liver (NAFL), and nonalcoholic steatohepatitis (NASH). NAFLD refers to the whole spectrum of the disorder, from mild steatosis to cirrhosis of the liver. NAFLD is divided into steatosis (NAFL) and steatohepatitis (NASH). In NAFL, the milder form of the condition, there is fatty infiltration in ≥5% of the liver, with or without fibrosis. In NASH, there is inflammation, steatosis, and fibrosis with ballooning injury to the hepatocytes.433 

The risk profile and natural history of the disorder in the pediatric population are still evolving, given that there are limited long-term studies in children. Pediatric NAFLD may reflect the early onset of a chronic disease with a more aggressive course, particularly once NASH has occurred.424,479  Preadolescent children with NAFLD have higher rates of mortality over 20 years, compared with their peers without NAFLD.479  Children with increasing weight gain; higher levels of alanine transaminase (ALT), γ glutamyl transferase (GGT), and cholesterol at baseline; worsening levels of HbA1c; and an incident diagnosis of T2DM are more likely to have severe disease or progression (Table 11).433,479  However, in a recent study of children 8 to 17 years of age with biopsy-confirmed NAFLD who received standardized nutrition and exercise counseling consistent with the 2007 AAP Expert Recommendations at 12-week intervals over 1 to 2 years, about half demonstrated any improvement in resolution of NASH or regression of fibrosis. Among children with borderline or definite NASH, resolution occurred in about one-third. Adolescents were more likely to develop worsening steatosis and less likely to experience any resolution of NASH or regression in fibrosis than younger children.433 

TABLE 11

Risk Factors for Diagnosis and Progression of NAFLD88,397,433 

NAFLD Risk Factorsa
Diagnosis Male sex, ≥10 y, obesity, sibling with NAFLD, prediabetes or diabetes mellitus, obstructive sleep apnea, dyslipidemia 
Progression Adolescent ≥14 y; higher or increasing alanine transaminase; elevated baseline aspartate transaminase, γ glutamyl transferase (GGT), and LDL cholesterol; prediabetes or diabetes mellitus; obstructive sleep apnea; increasing wt or waist circumference 
NAFLD Risk Factorsa
Diagnosis Male sex, ≥10 y, obesity, sibling with NAFLD, prediabetes or diabetes mellitus, obstructive sleep apnea, dyslipidemia 
Progression Adolescent ≥14 y; higher or increasing alanine transaminase; elevated baseline aspartate transaminase, γ glutamyl transferase (GGT), and LDL cholesterol; prediabetes or diabetes mellitus; obstructive sleep apnea; increasing wt or waist circumference 
a

Consideration should be given to groups of certain races/ethnicities with higher rates of NAFLD (eg, Hispanic, Asian), for which higher prevalence can be attributed to genetic, socioeconomic, and environmental factors.480 

C.3.a. Laboratory Tests for Diagnosis of NAFLD

The 2017 North American Society of Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) clinical practice guidelines recommend ALT as the preferred test for NAFLD.88  ALT is more specific for liver disease than aspartate transaminase (AST), easily accessible at laboratory centers, minimally invasive relative to other testing modalities for NAFLD, and has been used most often in pediatric NAFLD studies. Higher levels of ALT correlate with more advanced liver disease with steatosis and fibrosis; however, a normal ALT does not definitively exclude NAFLD.429  In a population of children older than 10 years with overweight and obesity who were referred from a primary care clinic, an ALT level ≥80 IU/L had a sensitivity of 57% and a specificity of 71% for NASH.481  Elevations in AST and GGT, especially at baseline, can be indicative of severe disease or rapid progression.433,481 

NAFLD is less common in children younger than 10 years. In an autopsy study of 742 children, 3.3% of 5- to 9-year-old children had fatty liver, compared with 11.3% in 10- to 14-year-olds and 17.3% in 15- to 17-year-olds.397  There is a higher risk for NAFLD in young children 2 to 9 years of age who have severe obesity, however.88  Thus, pediatricians and other PHCPs may consider evaluating NAFLD by obtaining an ALT level every 2 years in these children.

See Appendix 3 for more information on the frequency of evaluation for NAFLD and on managing NAFLD.

C.4. Hypertension

The prevalence of HTN among children and adolescents with overweight and obesity ranges from 5% to 30%, with higher prevalence with increasing BMI percentile.396  Children with excess weight also have abnormal diurnal variation in BP. One-third of children with obesity have a decreased nocturnal BP dip, increasing the potential risk for end-organ damage.482  Among children with obesity, additional cardiometabolic risk factors—such as insulin resistance or dyslipidemia—may affect BP, independent of obesity.

Studies indicate that HTN during childhood and adolescence increases the risk for adult HTN and cardiovascular disease.483485  More concerning, studies have shown that, among children with obesity, HTN is associated with vascular changes, increased left ventricular mass, and carotid intima media thickness during childhood.486,487  These findings support the importance of evaluating for HTN early and consistently throughout childhood and adolescence among individuals with overweight and obesity.413,488 

C.4.a. Evaluation for HTN

Obesity is the strongest risk factor for HTN in childhood.87,488  Elevated BP is observed in early childhood and prevalence increases with age and BMI category.396  A large study conducted in primary care settings found that 8% of children 3 to 5 years of age with obesity had elevated BP levels; the percentage increased to 20% among children 11 to 15 years of age.489  HTN prevalence varies by race and ethnicity, with highest prevalence occurring among non-Hispanic Black and Hispanic youth.490  SES is also a risk factor for HTN,491  as are adverse childhood experiences, both prenatally and during childhood.87  These factors may contribute to the higher prevalence of hypertension observed among non-Hispanic Black and Hispanic youth.490 

Pediatricians and other PHCPs should obtain a history of salt intake (eg, addition of salt while cooking and/or at meals) and sources of sodium from processed, frozen, and fast foods, because high sodium intake is associated with childhood HTN. Obtaining a history of physical activity and inactivity levels is also recommended, because decreased activity levels are associated with childhood HTN.87  Finally, evaluation of sleep duration and disordered breathing are recommended because of the association between abnormal sleep duration and OSA and elevated BP.492,493 

This KAS aligns with the 2017 AAP’s “Clinical Practice Guideline for Screening and Management of High Blood Pressure in Children and Adolescents,” which recommends evaluation of elevated BP and HTN for children with obesity at every clinic visit beginning at 3 years of age.87  Frequent monitoring of BP among children with overweight and obesity fosters earlier detection of elevated BP.

C.4.b. Diagnosis of HTN

In 2017, the AAP published a CPG on HTN that included recommendations for evaluation for elevated BP and updated HTN definitions of “elevation,” “stage 1 BP,” and “stage 2 BP” (see Table 12). This CPG recommended that an elevated initial BP measurement (≥90th percentile), taken either by oscillometry or auscultation, should be repeated twice with auscultation and averaged, at the same visit, to determine accurate BP measurement and category. For diagnosis, BP by auscultation should be repeated with confirmed elevated BP measurements on 3 separate clinic visits for elevated BP and stage 1 HTN, and on 2 separate visits for stage 2 HTN.87 

TABLE 12

BP Categories by Age and Number of Visits Needed for Diagnosis

BP Category Children 1–13 Years of Age Children ≥13 Years of Age Number of Visits to Diagnosis
Normal BP < 90th percentile BP <120/80 mm Hg NA 
Elevated BP ≥ 90th percentile to <95th percentile 120/<80 to 129/<80 mm Hg 
Stage 1 BP ≥ 95th percentile to <95th percentile + 12 mmHg 130/80 to 139/89 mm Hg 
Stage 2 BP ≥ 95th percentile + 12 mm Hg ≥140/90 mm Hg 
BP Category Children 1–13 Years of Age Children ≥13 Years of Age Number of Visits to Diagnosis
Normal BP < 90th percentile BP <120/80 mm Hg NA 
Elevated BP ≥ 90th percentile to <95th percentile 120/<80 to 129/<80 mm Hg 
Stage 1 BP ≥ 95th percentile to <95th percentile + 12 mmHg 130/80 to 139/89 mm Hg 
Stage 2 BP ≥ 95th percentile + 12 mm Hg ≥140/90 mm Hg 

Used with permission and adapted from the AAP HTN CPG,87 Fig 2, and AAP Pediatric Obesity Clinical Decision Support Chart.494  NA, not applicable.

TABLE 13

Summary of KASs for Evaluation of Comorbidities Among Children and Adolescents With Overweight and Obesity

KAS # Key Action Statement (KAS) Evidence Quality, Recommendation Strength
A. laboratory evaluation of obesity-related comorbidities 
In children 10 y and older, pediatricians and other PHCPs should evaluate for lipid abnormalities, abnormal glucose metabolism, and abnormal liver function in children and adolescents with obesity (BMI ≥ 95th percentile) and for lipid abnormalities in children and adolescents with overweight (BMI ≥ 85th percentile to < 95th percentile) B, Strong 
3.1 In children 10 y and older with overweight (BMI ≥ 85th percentile to < 95th percentile), pediatricians and other PHCPs may evaluate for abnormal glucose metabolism and liver function in the presence of risk factors for T2DM or NAFLD. In children 2 to 9 y of age with obesity (BMI ≥ 95th percentile), pediatricians and other PHCPs may evaluate for lipid abnormalities. C, Moderate 
B. Concurrent treatment of obesity and obesity-related comorbidities 
Pediatricians and other PHCPs should treat children and adolescents for overweight (BMI ≥ 85th percentile to < 95th percentile) or obesity (BMI ≥ 95th percentile) and comorbidities concurrently. A, Strong 
C. Evaluation for diagnosis of dyslipidemia, prediabetes, T2DM, NAFLD, and hypertension 
Pediatricians and other PHCPs should evaluate for dyslipidemia by obtaining a fasting lipid panel in children 10 y and older with overweight (BMI ≥ 85th percentile to < 95th percentile) and obesity (BMI ≥ 95th percentile) and may evaluate for dyslipidemia in children 2 through 9 y of age with obesity. B, Strong (10 y and older); C, moderate (2–9 y of age) 
KAS 6. Pediatricians and other PHCPs should evaluate for prediabetes and/or diabetes mellitus with fasting plasma glucose, 2-h plasma glucose after 75-g oral glucose tolerance test (OGTT), or glycosylated hemoglobin (HbA1c).a B, Moderate 
KAS 7. Pediatricians and other PHCPs should evaluate for NAFLD by obtaining an alanine transaminase (ALT) test.b A, Strong 
Pediatricians and other PHCPs should evaluate for hypertension by measuring blood pressure at every visit starting at 3 y of age in children and adolescents with overweight (BMI ≥ 85 percentile to < 95th percentile) and obesity (BMI ≥ 95th percentile). C, Moderate 
KAS # Key Action Statement (KAS) Evidence Quality, Recommendation Strength
A. laboratory evaluation of obesity-related comorbidities 
In children 10 y and older, pediatricians and other PHCPs should evaluate for lipid abnormalities, abnormal glucose metabolism, and abnormal liver function in children and adolescents with obesity (BMI ≥ 95th percentile) and for lipid abnormalities in children and adolescents with overweight (BMI ≥ 85th percentile to < 95th percentile) B, Strong 
3.1 In children 10 y and older with overweight (BMI ≥ 85th percentile to < 95th percentile), pediatricians and other PHCPs may evaluate for abnormal glucose metabolism and liver function in the presence of risk factors for T2DM or NAFLD. In children 2 to 9 y of age with obesity (BMI ≥ 95th percentile), pediatricians and other PHCPs may evaluate for lipid abnormalities. C, Moderate 
B. Concurrent treatment of obesity and obesity-related comorbidities 
Pediatricians and other PHCPs should treat children and adolescents for overweight (BMI ≥ 85th percentile to < 95th percentile) or obesity (BMI ≥ 95th percentile) and comorbidities concurrently. A, Strong 
C. Evaluation for diagnosis of dyslipidemia, prediabetes, T2DM, NAFLD, and hypertension 
Pediatricians and other PHCPs should evaluate for dyslipidemia by obtaining a fasting lipid panel in children 10 y and older with overweight (BMI ≥ 85th percentile to < 95th percentile) and obesity (BMI ≥ 95th percentile) and may evaluate for dyslipidemia in children 2 through 9 y of age with obesity. B, Strong (10 y and older); C, moderate (2–9 y of age) 
KAS 6. Pediatricians and other PHCPs should evaluate for prediabetes and/or diabetes mellitus with fasting plasma glucose, 2-h plasma glucose after 75-g oral glucose tolerance test (OGTT), or glycosylated hemoglobin (HbA1c).a B, Moderate 
KAS 7. Pediatricians and other PHCPs should evaluate for NAFLD by obtaining an alanine transaminase (ALT) test.b A, Strong 
Pediatricians and other PHCPs should evaluate for hypertension by measuring blood pressure at every visit starting at 3 y of age in children and adolescents with overweight (BMI ≥ 85 percentile to < 95th percentile) and obesity (BMI ≥ 95th percentile). C, Moderate 
a

Per KAS 3 and 3.1: pediatricians and other PHCPs should evaluate children 10 y and older with obesity (BMI ≥ 95th percentile) for abnormal glucose metabolism and may evaluate children 10 y and older with overweight (BMI ≥ 85th percentile to <95th percentile) with risk factors for T2DM or NAFLD for abnormal glucose metabolism. (Refer to evidence tables for KAS 3 and 3.1.)

b

Per KAS 3 and 3.1: pediatricians and other PHCPs should evaluate children 10 y and older with obesity (BMI ≥ 95th percentile) for abnormal liver function and may evaluate children 10 y and older with overweight (BMI ≥ 85th percentile to <95th percentile) with risk factors for TD2M or NAFLD for abnormal liver function. (Refer to evidence tables for KAS 3 and 3.1.)

BP measurements should be taken with an appropriately sized cuff; the bladder length should be 80% to 100% of the circumference of the arm, and the width should be at least 40% of the arm circumference.87  (See https://www.cdc.gov/nchs/data/nhanes/nhanes_07_08/manual_an.pdf.)

For children and adolescents with excess weight, a larger cuff size may be required to obtain accurate measurements. For children and adolescents with severe obesity, a thigh cuff may be needed. Additionally, for children and adolescents with obesity, ambulatory blood pressure monitoring (ABPM) is recommended to assess HTN severity and identify possible abnormal circadian BP patterns, which increases risk for end-organ damage. ABPM also helps to identify masked HTN and/or “white coat” HTN.87 

Elevated BP in the office setting is unrecognized in approximately 25% of cases.495  The AAP’s CPG on HTN provides pediatricians and other PHCPs with practical tools to assist with identification of elevated BP and HTN. Improved identification of children at high risk and youth allows for a thorough evaluation, treatment, and follow-up, with the goal of decreasing long-term cardiovascular morbidity and mortality.

See Appendix 3 for more information on repeat evaluation for HTN and on management of HTN. Table 13 lists the KASs for the comorbidities covered in the TR.

D. Other Comorbidities

D.1. Obstructive Sleep Apnea

OSA is a sleep disorder “characterized by prolonged partial upper airway obstruction and/or intermittent complete obstruction that disrupts normal ventilation during sleep.”89  The condition is associated with cardiovascular complications, neurocognitive impairment, and decreased quality of life. Children with obesity have a higher prevalence of OSA: 45% among children obesity compared with 9% among children with healthy weight. One study indicated that a 1-unit increase in the BMI SD score increased the odds of having OSA by a factor of 1.9 independent of age, sex, tonsillar hypertrophy, and asthma.441 

Evaluation for OSA is based on history of symptoms and examination. Children with obesity, tonsillar hypertrophy, craniofacial anomalies, trisomy 21, and neuromuscular disorders are at higher risk for OSA. Common symptoms include frequent snoring, gasps or labored breathing during sleep, disturbed sleep, daytime sleepiness, inattention and/or learning problems, nocturnal enuresis, and headaches. Examination findings may include tonsillar hypertrophy, adenoidal facies, micro- or retrognathia, high-arched palate, and elevated BP. Diagnosis is made by obtaining a polysomnography, the gold standard test, with an apnea-hypopnea index of 1 or more episodes per hour in children.496  Because of limited availability of sleep centers with pediatric expertise, referral to a pediatric otolaryngologist for further evaluation, diagnosis, and management may be needed.

Consensus Recommendations

The CPG authors recommend pediatricians and other PHCPs obtain:

See Appendix 3 for more information on the initial management of OSA.

D3. Polycystic Ovarian Syndrome

Polycystic ovarian syndrome (PCOS) is a heterogeneous disorder characterized by hyperandrogenism and disordered ovulatory function and is often associated with obesity and insulin resistance. The condition increases risk for infertility, T2DM, cardiovascular disease, and cancer.497 

Four different sets of criteria have been published for diagnosis of PCOS in adults as outlined by differing professional organizations (Table 14).498  Establishment of diagnostic criteria for PCOS in adolescence has been difficult, because characteristic features of PCOS can be normal physiologic events during early adolescence.499  International pediatric and adolescent specialty societies have made recommendations for diagnosis specific to adolescents, which include the following: (1) evidence of clinical or biochemical hyperandrogenism, and (2) persistent irregular menstrual cycles (<20 days or >45 days) 2 years after menarche.500  Limited data are available on prevalence of PCOS in adolescents. Estimates range from 3% to 11%, depending on the criteria for diagnosis.501 

TABLE 14

Definitions and Criteria for PCOS

Definition Diagnostic Criteria
National Institutes of Health Requires the presence of: 
  1. Hyperandrogenism (clinical and/or biochemical) 
  2. Ovarian dysfunction 
American Society of Reproductive Medicine (Rotterdam) Requires the presence of at least 2 criteria: 
  1. Hyperandrogenism (clinical and/or biochemical) 
  2. Ovulatory dysfunction 
  3. Polycystic ovarian morphology 
American Endocrine Society Requires the presence of hyperandrogenism (clinical and/or biochemical) and either: 
  1. Ovulatory dysfunction 
  2. Polycystic ovarian morphology 
Androgen Excess and Polycystic Ovary Syndrome Society Requires the simultaneous presence of: 
  1. Hyperandrogenism (clinical and/or biochemical) 
  2. Ovarian dysfunction (ovulatory dysfunction and/or polycystic ovarian morphology) 
Definition Diagnostic Criteria
National Institutes of Health Requires the presence of: 
  1. Hyperandrogenism (clinical and/or biochemical) 
  2. Ovarian dysfunction 
American Society of Reproductive Medicine (Rotterdam) Requires the presence of at least 2 criteria: 
  1. Hyperandrogenism (clinical and/or biochemical) 
  2. Ovulatory dysfunction 
  3. Polycystic ovarian morphology 
American Endocrine Society Requires the presence of hyperandrogenism (clinical and/or biochemical) and either: 
  1. Ovulatory dysfunction 
  2. Polycystic ovarian morphology 
Androgen Excess and Polycystic Ovary Syndrome Society Requires the simultaneous presence of: 
  1. Hyperandrogenism (clinical and/or biochemical) 
  2. Ovarian dysfunction (ovulatory dysfunction and/or polycystic ovarian morphology) 

All of the diagnostic criteria for PCOS require the exclusion of other disorders of adrenal excess, such as nonclassic or late-onset congenital adrenal hyperplasia, Cushing syndrome, hyperprolactinemia, hypothyroidism, acromegaly, premature ovarian failure, a virilizing adrenal or ovarian neoplasm, or a drug-related condition.

Evaluation for PCOS in an adolescent requires first excluding other medical conditions that may cause menstrual dysfunction (oligomenorrhea or amenorrhea) and/or signs of androgen excess (acne, hirsutism, or alopecia). Additionally, for adolescents, evaluation should occur 2 years after menarche, because irregular menstrual cycles are not uncommon during this timeframe. Laboratory testing may include: 17-hydroxyprogesterone, total testosterone, free testosterone, sex hormone-binding globulin, dehydroepiandrosterone sulfate, androstenedione, luteinizing hormone, follicle-stimulating hormone, estradiol, prolactin, free thyroxine, thyroid stimulating hormone, and insulin. Interpretation of laboratory results should be made in the context of age-appropriate reference ranges; therefore, referral to a laboratory that can perform ultrasensitive pediatric assays is recommended. Routine ovarian imaging is not indicated for the diagnosis of PCOS in adolescents.498,502  An algorithm for evaluation is provided in the implementation materials from previously published consensus recommendations.503 

See Appendix 3 for more information on the initial management of PCOS.

Consensus Recommendation

The CPG authors recommend pediatricians and other PHCPs:

D4. Depression

The relationship between pediatric obesity and depression is less well understood than the physical comorbidities; however, identification of depression is an important component of the assessment and management of pediatric obesity, given its potential impact on treatment outcomes. A systematic review and meta-analyses conducted in 2019 showed that children 18 years and younger with obesity have a 32% increased odds of having or developing depression compared with children of healthy weight, with the highest odds (44%) among females with obesity.504 

Studies are limited on the effect of treatment of pediatric obesity on depression. A recent meta-analysis of 36 studies found a small but significant reduction in depressive symptoms following structured pediatric obesity treatment. Notably, no adverse mental health outcomes were reported.505  Additionally, the interventions technical report indicates that obesity treatment may improve psychosocial outcomes for youth with obesity, including quality of life.80  Further research in this area is needed; however, pediatricians and other PHCPs should be aware that obesity treatment interventions have not been associated with increased symptoms of depression.80 

Evaluation for depression includes awareness of symptoms and risk factors. Symptoms include irritability, fatigue, insomnia, excessive sleeping, decline in academic performance, family conflict, and weight changes. Risk factors include personal or family history of depression, substance use, trauma, frequent psychosomatic complaints, psychosocial stressors, and other mental health conditions. The AAP CPG for depression recommends evaluating adolescents 12 years and older for depression annually using a formal self-report tool, such as the Patient Health Questionnaire-9.506  Additionally, routine monitoring of psychosocial function and using an evaluation tool when a patient presents with symptoms of depression is recommended.

If initial evaluation for depression is positive, evaluation with a standardized depression tool should be conducted. Assessment for depression should also include direct, separate interviews with the patient and family members to include functional impairment at home, school, and peer settings and safety and/or suicide risk.506  The implementation materials include additional information and resources, including tools for pediatricians and other PHCPs, in addition to an assessment and management algorithm.506 

See Appendix 3 for more information on the initial management of depression.

Consensus Recommendation

The CPG authors recommend pediatricians and other PHCPs:

D5. Orthopedic Comorbidities

D.5.a. Slipped Capital Femoral Epiphysis

Slipped capital femoral epiphysis (SCFE) is the most common hip disorder in the adolescent period. It occurs between 9 and 16 years of age, spanning periods of rapid linear growth. There is a 1.5:1 male-to-female ratio, and SCFE occurs more often in Black, Hispanic, and AI/AN children.507,508  SCFE is bilateral in 25% to 80% of cases.507  Weakening of the proximal femoral physis (growth plate) causes a slip in the physis, with a corresponding displacement of the epiphysis (femoral head). Risks such as obesity exert mechanical stress on the physis, whereas metabolic conditions (eg, hypothyroidism, hypopituitarism) weaken the physis, creating the ideal setup for a slip.

The common presentation is hip pain, although many children may present with knee pain alone or in addition to hip pain. The pain can happen only with weight bearing or be constant. On physical examination, there is external rotation with passive hip flexion, limitation of internal rotation and antalgic gait. Pain can also be elicited passively with internal rotation of the hip. SCFE is characterized as stable if the child can bear weight with or without crutches and as unstable when weight-bearing is not possible.509  Because SCFE can be bilateral, the pediatrician or other pediatric health care provider needs to remember to obtain a history and exam for the contralateral leg. The history and examination should also exclude differential diagnoses for hip pain (eg, infections, inflammation or autoimmune conditions, neoplasms, and trauma).

As the pathophysiologic process continues, the child is at greater risk for increased morbidity, including avascular necrosis. Thus, the importance of early diagnosis cannot be overemphasized. Once SCFE is suspected, pediatricians and other PHCPs should confirm the diagnosis and place an emergent referral to the orthopedic surgeon. The mainstay for diagnosis is plain radiographs of the hip and pelvis (Table 15). Ultrasonography and computerized tomography are not useful. In cases with equivocal radiography results and a high index of suspicion, MRI, which is more sensitive at assessing the physis, can be obtained.

TABLE 15

Recommended Imaging for Slipped Capital Femoral Epiphysis and Blount Disease

Condition First-Line Imaging Additional Tests
SCFE Bilateral hip (anteroposterior and lateral), frog-leg radiographs If SCFE is unstable, cross-table lateral radiograph. MRI for equivocal imaging results, or assess blood supply to femoral head. 
Blount Long leg (anteroposterior and lateral), knee (anteroposterior and lateral) radiographs MRI of the knee to delineate level and extent of deformity, assess blood supply to physis.a 
Condition First-Line Imaging Additional Tests
SCFE Bilateral hip (anteroposterior and lateral), frog-leg radiographs If SCFE is unstable, cross-table lateral radiograph. MRI for equivocal imaging results, or assess blood supply to femoral head. 
Blount Long leg (anteroposterior and lateral), knee (anteroposterior and lateral) radiographs MRI of the knee to delineate level and extent of deformity, assess blood supply to physis.a 

aAdditional tests are determined by orthopedic surgeon.

See Appendix 3 for more information on the initial management of SCFE.

D.5.b. Blount Disease

Blount disease is a growth disorder that primarily affects the proximal medial tibial physis and epiphysis.510,511  It often presents as a triad of asymmetric tibia vara, tibial torsion, and precurvatum. As with SCFE, excess weight is a risk factor, because it increases mechanical stress on the physis. Blount disease disproportionately affects non-Hispanic Black or Hispanic children.510,511  The reason for this predilection is unclear, but it may reflect epigenetic, social, or cultural factors that affect early ambulation, growth, or obesity. Other risk factors include a family history of Blount disease and ambulation before 12 months of age.510,511  Symptoms and signs include leg pain, abnormal gait with bowing of the lower legs, and leg-length discrepancy.

Blount disease is classified into 2 categories: (1) infantile or early-onset, and (2) late-onset or adolescent Blount disease, based whether the onset occurred before or after age 10 years, respectively. Infantile Blount disease is bilateral but asymmetric, occurs more often in males, and often includes a preceding history of early ambulation. For young children, pediatricians and other PHCPs should exclude physiologic bowing typically seen during toddlerhood, which is bilateral but symmetrical and resolves by age 3 or 4 years. In the adolescent subtype, the tibia vara deformity is milder, unilateral, and predominantly associated with severe obesity.510513 

Plain radiographs are the initial imaging of choice (Table 15). When used, MRI provides a more sensitive investigation of the deformity.

See Appendix 3 for more information on the initial management of Blount disease.

Consensus Recommendations

The CPG authors recommend pediatricians and other PHCPs:

D.5.c. Idiopathic Intracranial Hypertension

Idiopathic intracranial hypertension (IIH) (previously known as pseudotumor cerebri) is a neurologic condition with serious long-term morbidity.514,515  It occurs most often in females of child-bearing age, and obesity is a well-established risk factor.516518  In a population-based study in Olmstead County, Minnesota, the incidence of IIH among adult females aged 15 to 44 years with obesity was 3.5-fold higher than that of all females in that age group.517 

The pathogenesis is unclear, hence the name; however, 3 hypothesized mechanisms are increased venous pressure, decreased cerebrospinal fluid (CSF) drainage, and increased CSF production. Other factors associated with for IIH include medications (eg, doxycycline, tetracyclines, retinoic acid, sulfonamides), autoimmune disorders (eg, systemic lupus erythematosus), and hormonal disorders (eg, Cushing disease, Addison disease). A higher prevalence of IIH has also been reported in females with PCOS.519 

Typical symptoms are persistent headaches, pulsatile synchronous tinnitus, and visual changes or loss, although the history can be variable. Physical examination includes a fundoscopy for papilledema and a thorough neurologic evaluation for cranial nerve deficits such as sixth nerve palsy. The presence of altered consciousness or neurologic deficit with localized peripheral findings should prompt pediatricians and other PHCPs to consider another etiology. The serious sequelae for IIH is vision loss. Thus, a review of system should be obtained to evaluate any child with obesity who has significant or progressive headaches. There should also be a high index of suspicion for IIH with new-onset headaches and significant weight gain (5% to 15% of body weight), particularly when it occurs in the prior 12 to 18 months.518,520 

Initial evaluation for IIH involves conducting comprehensive evaluation by the neurologist and ophthalmologist or at an integrated IIH clinic.

See Appendix 3 for more information on the initial management of IIH.

Consensus Recommendation

The CPG authors recommend pediatricians and other PHCPs:

D.6. Summary

In summary, a thorough history and physical examination is invaluable in guiding pediatricians’ and other PHCPs’ assessment for comorbidities. This section of the CPG, the algorithm in Appendix 1, Appendix 3, and the accompanying implementation resources provide a framework for evaluation, reevaluation, and initial management. Obesity is a linchpin disorder with attendant comorbidities, some of which are not covered in this section or in the technical report (eg, pes planus). For these comorbidities, pediatricians and other PHCPs are encouraged to seek resources available through the AAP and other professional societies.

XI. Treatment of Child and Adolescent Overweight and Obesity

A. Obesity is a Chronic Disease

Obesity is a chronic disease and should be treated with intensive and long-term care strategies, provision of ongoing medical monitoring and treatment of associated comorbidities and ongoing access to obesity treatment. As noted previously, obesity is associated with increased prevalence of comorbidities, including abnormal lipids, glucose dysregulation and other endocrinopathies, abnormal liver enzymes, and elevated BP. A key component of treating obesity is to concurrently monitor and treat the comorbidities (see Comorbidities section).

The chronic care model requires care to be delivered within the context of individual patient factors, taking into consideration the child’s household and familial influences, access to healthy food and activity spaces, and other SDoHs.522  Recommendations for obesity treatment should be integrated within existing community and social systems.521  The medical home model is the preferred standard of care for children who have chronic conditions,522  and the child’s medical home should serve as a care coordinator in the treatment of children with obesity, coordinating with subspecialists, including obesity treatment specialists, and community resources.

Treatment of obesity varies based on individual-level factors. No specific studies were found that compare different treatments by a patient’s underlying condition, special needs, or developmental status. Nonetheless, it is important to recognize that the following recommendations will require adaptation based on the patient’s unique medical, family, developmental, social, and environmental factors. No evidence exists, however, to exclude children with special health care needs, complex disease, or developmental limitations from the treatment options outlined below, except where specifically noted.

The evidence for pediatric obesity treatment that is presented in this CPG shows that several treatments are effective in treating both obesity and related comorbidities. It is important to note, however, that in all of these studies, if the treatment is discontinued, children tend to regain weight and lose the attendant health benefits. There is limited longitudinal evidence about durability of weight change after treatment. The natural course of obesity across the lifespan is characterized by responses to treatment and relapse when treatment ends.77  Therefore, continuous coordinated care is required to support ongoing obesity treatment throughout childhood and adolescence into young adulthood.503 

B. Evidence-based Pediatric Obesity Treatment Reduces Risks for Disordered Eating

In the field of pediatric nutrition, in the treatment of both obesity and eating disorders, concerns have been raised as to whether diagnosis and treatment of obesity may inadvertently place excess attention on eating habits, body shape, and body size and lead to disordered eating patterns as children grow into adulthood. The literature refutes this relationship, however. Cardel et al refer to multiple studies that have demonstrated that, although obesity and self-guided dieting consistently place children at high risk for weight fluctuation and disordered eating patterns, participation in structured, supervised weight management programs decreases current and future eating disorder symptoms (including bulimic symptoms, emotional eating, binge eating, and drive for thinness) up to 6 years after treatment.378,505,523  The structure and underlying principles of the primary care-based and intensive health behavior and lifestyle programs described here share multiple similarities with eating disorder programs. These include a focus on increasing healthful food consumption, participating in physical activity for enjoyment and self-care reasons, and improving overall self-esteem and self-concept. Structured and professionally run pediatric obesity treatment is associated with reduced eating disorder prevalence, risk, and symptoms.505,523 

C. Motivational Interviewing

MI (also discussed in the Evaluation section) is a patient-centered counseling style that identifies and reinforces a patient’s own motivation for change—in contrast to the more traditional approach in which a provider prescribes behavior change. MI guides families to identify a behavior to change, based on what the parent(s) or child feels is important and can be accomplished.524 

MI does not impose a particular goal but is successful when the family changes the selected behavior—which could be nutritional, such as reducing sugar-sweetened beverages; increasing physical activity; or engaging in other behaviors, such as eating meals together or improving sleep hygiene. The target of MI is the person who is responsible for the behavior change. Pediatricians and other PHCPs focus on parent motivation when patients are preadolescent or younger, and transition to patient motivation, usually combined with parent motivation, when patients reach adolescence.

MI consists of 4 processes: engaging, focusing, evoking, and planning. These processes, described below, are particularly salient when discussing weight status and devising a change plan.524 

The MI process of engaging is facilitated by the existing medical pediatrician-patient relationship. Through engaging, MI can help answer the question of whether to attempt behavior change. Attempts at obesity treatment often fail because of a disconnect between pediatricians and other PHCPs who see impending health problems with regard to weight status and a caregiver who sees a thriving, growing child. The presence of other challenges—such as financial constraints and other SDOHs, mental illness, or competing health considerations—may make obesity treatment a low priority.

An evaluation of these factors is necessary before any action. The longitudinal nature of many pediatrician-family relationships can enable ongoing monitoring of weight, health status, and family challenges. More focused obesity treatment efforts can ensue when families are ready. And regardless of their readiness to engage in more “active” obesity treatment, all patients need follow-up, encouragement, and monitoring of health status.

The MI process of focusing furthers respect for the autonomy of the patient and family. Behavior change is the patient’s and family’s decision, not the pediatrician’s or other PHCP’s. Identifying behaviors to change is a collaborative process. Caregivers and pediatricians (or other pediatric health care providers) tend to feel that the locus of control for pediatric behavior change resides with the caregiver longer than it actually does, however. Between 6 and 12 years of age, a steady shift of control occurs from caregiver to patient. By the early teen years, the vast majority of behavioral decisions reside in the patient—not the caregiver. Therefore, the patient should increasingly be the target of the readiness to change assessment and focusing as they age.

The MI principle of evocation advances the autonomy of the patient and family. Pediatricians and other PHCPs can evaluate values that are important to the patient and family. Speaking to an adolescent patient who is more concerned about athletic performance than health, pediatricians and other PHCPs may have better traction discussing what the patient hopes to accomplish physically than attempting to incite concern about potential future disease. Likewise, encouraging a very self-conscious patient to exercise in a public setting may come across poorly. Taking time to evaluate individuals’ values, goals, and barriers is a critical piece of assessing readiness to change.

With regard to the MI process of planning, pediatricians and other PHCPs can evaluate a patient’s knowledge of what is necessary for a particular strategy and what resources and support are available to them. As a consultant, pediatricians and other PHCPs play a crucial role providing support and guidance for the patient’s collaboratively chosen course of action. Because obesity treatment is characterized by frequent setbacks and relapses, pediatricians and other PHCPs can also serve as valuable experts who can assess why behaviors may have reverted and what strategies might be appropriate for patients who seek to “get back on track.”

Table 16 summarizes MI processes as a way of evaluating and responding to patient readiness to change. Note that the MI tools are suggestions; in practice, each tool may find utility in every phase of evaluation.

TABLE 16

Possible Use of MI to Evaluate and Respond to Readiness to Change392 

MI Process Phase of Evaluation Goal Possible MI Tool
Engaging Early, getting to know patient Establishing collaborative role, understanding patient issues Open-ended questions, affirmations, nonjudgmental graphics, empathic reflections 
Focusing Early and when desire to change weight status is expressed Identifying appropriate and productive strategies to change weight status Readiness ruler, elicit-provide-elicit, healthy habits survey, identifying and responding to change talk and sustain talk 
Evoking When behavior change is desired Triggering internal motivation, empowering change Values statement, double-sided and amplified reflections 
Planning When embarking on change Carrying out effective change plan, dealing with relapse Readiness ruler, action reflections, summarization, teach back, SMART goals (specific, measurable, achievable, realistic, and timely) 
MI Process Phase of Evaluation Goal Possible MI Tool
Engaging Early, getting to know patient Establishing collaborative role, understanding patient issues Open-ended questions, affirmations, nonjudgmental graphics, empathic reflections 
Focusing Early and when desire to change weight status is expressed Identifying appropriate and productive strategies to change weight status Readiness ruler, elicit-provide-elicit, healthy habits survey, identifying and responding to change talk and sustain talk 
Evoking When behavior change is desired Triggering internal motivation, empowering change Values statement, double-sided and amplified reflections 
Planning When embarking on change Carrying out effective change plan, dealing with relapse Readiness ruler, action reflections, summarization, teach back, SMART goals (specific, measurable, achievable, realistic, and timely) 
TABLE 17

Treatment Intensity and BMI Reduction in Randomized Controlled Trials

Authors Study Population BMI Outcomes Duration
Wilfley (2017)615  US; ages 7–11; OW/OB; n = 172 Not reported; “−6.71 percent overweight” at 8 mo 26–51 h per 8 mo 
Butte (2017)642  US; ages 2–12; OW/OB; n = 549 −0.42 at 12 mo; only effective in ages 6–8 >52 h per 12 mo 
Nemet (2005)621  Israel; ages 6–16; OB; n = 46 −2.2 at 12 mo 26–51 h per 3 mo 
Savoye (2007)439  US; ages 8–16; OB, n = 174 −3.3 at 12 mo, −2.8 at 24 mo >52 h per 12 mo 
Vos (2011)617  Germany; ages 7–15; OB; n = 73 −0.2 (BMIz) at 12 mo 26–51 h per 3 mo 
Weigel (2008)612  Germany; ages 7–15; OB; n = 73 −4.3 at 12 mo >52 h per 12 mo 
Reinehr (2010)643  Germany; ages 7–15; OW/OB; n = 66 −1.5 at 6 mo >52 h per 6 mo 
Authors Study Population BMI Outcomes Duration
Wilfley (2017)615  US; ages 7–11; OW/OB; n = 172 Not reported; “−6.71 percent overweight” at 8 mo 26–51 h per 8 mo 
Butte (2017)642  US; ages 2–12; OW/OB; n = 549 −0.42 at 12 mo; only effective in ages 6–8 >52 h per 12 mo 
Nemet (2005)621  Israel; ages 6–16; OB; n = 46 −2.2 at 12 mo 26–51 h per 3 mo 
Savoye (2007)439  US; ages 8–16; OB, n = 174 −3.3 at 12 mo, −2.8 at 24 mo >52 h per 12 mo 
Vos (2011)617  Germany; ages 7–15; OB; n = 73 −0.2 (BMIz) at 12 mo 26–51 h per 3 mo 
Weigel (2008)612  Germany; ages 7–15; OB; n = 73 −4.3 at 12 mo >52 h per 12 mo 
Reinehr (2010)643  Germany; ages 7–15; OW/OB; n = 66 −1.5 at 6 mo >52 h per 6 mo 

OW, overweight; OB, obese.

C.1. Motivational Interviewing and Weight Status

Prospective studies specifically examining MI have demonstrated that the approach has positive effect on weight status, compared with controls.525528  The outcomes included greater decline in BMI percentile or BMI SD score (also known as z-score), and less of an increase in BMI. These studies were all low-intensity treatments (ie, less than 5 hours) that were delivered in pediatric primary care practices by medical providers and dietitians who successfully learned and used MI.

MI is a tool used with many different strategies aimed at encouraging nutrition and physical activity change, and so the use of MI does not guarantee effect. Tables 2 and 3 in the technical report on interventions (https://doi.org/10.1542/peds.2022-060642) provide an overview of all the programs, including impact and use of MI. Of the 2 additional effective low-intensity studies (not aimed at MI evaluation), 1 included MI in both arms529  and 1 did not use MI.530 

Approximately 23 low-intensity studies were ineffective, of which 14 included MI.531551  These programs varied in participant age, sample size, duration, and other components.

Among moderate-intensity interventions (5–25 hours), about one-third of the approximately 20 effective interventions used MI.552574 

Conversely, approximately one-quarter of the ineffective programs used MI.123,125,150,151,567,575611 

Use of MI in high-intensity programs is more difficult to interpret, because many of these studies resulted in several publications at different outcomes points, with discrepant effects. Some used MI in both study arms.439,610,612614  An estimated one-quarter of the effective high-intensity programs used MI, however.439,612,613,615622 

Although much more work is needed to examine the optimal characteristics that might moderate MI’s impact, like training, fidelity to the MI process, potential patient characteristics, as well as target behaviors, the success of the studies in which MI was the core treatment supports this KAS.

D. Intensive Health Behavior and Lifestyle Treatment

IHBLT is the foundational approach to achieve body mass reduction or the attenuation of excessive weight gain in children. It involves visits of sufficient frequency and intensity to facilitate sustained healthier eating and physical activity habits.79  IHBLT typically involves engagement with, and participation of, families in discussions of necessary treatment based on the severity of disease. It also involves interaction with pediatricians and other PHCPs who are trained in lifestyle-related fields and requires significantly more time and resources than are typically allocated to routine well-child care.623 

There are known limitations for families to access and participate in IHBLT. These limitations include the relative scarcity and distribution of such treatment programs and pediatricians or other pediatric health care providers with experience and/or training in pediatric obesity treatment, family transportation challenges, loss of school or work time to attend multiple recurring appointments during what are typically working hours, SDoHs, competing health issues for children or family members, and mismatched expectations between the family (who may expect significant weight loss) and pediatricians or other pediatric health care providers.624  IHBLT is appropriate for typically developing children and adolescents as well as CYSHCN, although will require modification based on the patient’s unique health conditions and developmental factors.

The most consistently effective IHBLT programs deliver 26 or more hours of face-to-face, family-based counseling on nutrition and physical activity over at least a 3- to 12-month period, for children aged for children 6 years and older with overweight and obesity, with more limited evidence for children 2 to 5 years of age.625  Although not universally available, treatment programs that provide engaging, group-based physical activity and nutrition programming are currently available in various forms across the United States.222,626  Some IHBLT are housed in academic medical centers or community hospitals, some are in primary care offices or obesity treatment specialty clinics (ie, weight management clinics), and others are delivered through partnerships with local community entities such as the YMCA627  or parks and recreation departments.628  Clinic-community partnerships in particular have demonstrated implementation feasibility and are engaging to low-income and racially diverse populations.629  Pediatricians and other PHCPs should investigate local programs in the area and become familiar with the referral requirements and processes to connect patients with this treatment option (Fig 3).

FIGURE 3

Intensive health behavior and lifestyle treatment.

FIGURE 3

Intensive health behavior and lifestyle treatment.

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Each of the components of the KAS below are supported by evidence that is detailed in the technical report on interventions and summarized here:

The physical activity component is more effective when children are engaged in a combination of aerobic and nonaerobic physical activity,635  compared with physical activity counseling. Noncompetitive, cooperative, fun activities that build motor skills as well as self-confidence are more engaging for children. Several studies have noted adaptations for children with obesity, including a preference for water-based activities and nonweight-bearing activities (ie, cycling) and considerations for physical therapy or conditioning or training if a child has a low level of fitness.

Nutrition skill-building sessions that involve direct meal preparation or tasting are more effective in increasing children’s acceptance of new foods and increasing parent confidence to prepare meals at home, compared with nutrition education.636  Specific nutritional content included in treatment varies as well. Several studies relied on published guidelines (ie, NHLBI-supported CHILD-1diet), whereas others used specific dietary approaches, such as the reduced-glycemic load diet553,564,574  or using meal replacements.591 

Several of the more-intensive programs that demonstrate effectiveness also included a focus on mental health and parenting skills; thus, evidence exists to support the addition of these components to increase effectiveness.613,618,619,622,637639 

Programs often address other components of health as well, including getting enough sleep, reducing sedentary screen time, and addressing stigma and weight bias. Although these additional elements are generally recognized as positive and are consistent with anticipatory guidance, they do not have evidence for additional benefit in the context of IHBLT.

D.1. Evidence for Effectiveness

The 2017 USPSTF recommendation for pediatric obesity treatment is based on high-quality randomized and nonrandomized studies that demonstrate a significant BMI reduction and were published through January 2016 (n = 42).79,625  The evidence review to inform this CPG additionally included a systematic evidence review of randomized and nonrandomized interventions leading to BMI reduction (March 2020; 214 total intervention studies of all types; of these, 126 were randomized lifestyle studies).

The evidence review is additive to the USPSTF review, as it includes new studies since January 2016 as well as studies with a comparative effectiveness design. Dose is clearly the factor most strongly correlated with treatment outcomes, as evidenced by a selection of trials that deliver “high intensity” and “comprehensive” contact over a 2- to 12-month625  or 3- to 12-month time period.80 

In research settings simulating clinical practice, intensive behavioral intervention has evidence for effectiveness in lowering child BMI, reducing comorbidities, and improving quality of life. Interventions that provide more ≥26 hours of treatment are associated with a reduction in BMI z-score between −0.10 and −0.50530,565,569,570,612,618,622,641  or a range of −1.6 to −8.1 kg (3.5 to 18 lb) weight loss over 1 year. Interventions that meet the intensity or “dose” threshold of 26 hours or more over 3 to 12 months can lead to clinically significant improvements in BMI, systolic and diastolic BP, insulin, and glucose levels and to clinically meaningful improvements in comorbidities such as asthma, obstructive sleep apnea, and NAFLD.440444  Interventions lasting less than 3 months did not demonstrate effectiveness.

There is no evidence that obesity treatments harm patients’ quality of life. Among the studies that included quality of life measures, none showed worsening; about one-third showed improvement to quality of life.535,555,615,642  More study on treatments’ impact on mental health is needed, however. Few studies examined mental health impact; although none showed worsening mental health, all of the studies excluded subjects who had established mental health disorders at baseline.553,579,646 

The prevalence of eating disorders is not well-characterized in patients participating in obesity treatment,647  but disordered eating patterns may be more common among youth with obesity compared with youth at a healthy weight.387  Therefore, pediatricians and other PHCPs should evaluate patients before, during, and after intensive behavioral intervention for the presence of disordered eating (as discussed in the evaluation section) as well as for greater-than-expected weight change.

D.2. Referral Strategies

Limiting factors to IHBLT effectiveness include lack of engagement or participation by families and high attrition rates. Thus, when referring to more intensive treatment, pediatricians and other PHCPs should inform patients and their family members about the reason for the referral, encourage families to actively participate in the treatment, and schedule follow-up visits to monitor progress in the treatment.

One factor in early attrition may be mismatched expectations for weight loss.648  Families can best make decisions about IHBLT participation after providers inform them of commitment and likely outcomes. Pediatricians and other PHCPs are encouraged to help to set reasonable expectations for these outcomes among families, as there is a significant heterogeneity to treatment response and there is currently no evidence to predict how individual children will respond. Many children will not experience BMI improvement, particularly if their participation falls below the treatment threshold. As described in the Health Behavior and Lifestyle Treatment section, those who do experience BMI improvement will likely note a modest improvement of 1% to 3% BMI percentile decline.396 

D.3. Prompt IHBLT

A key distinction from prior recommendations is for pediatricians and other PHCPs to refer as soon as possible to IHBLT. Current practice patterns involve counseling in primary care practices, often for months to years, before referring to more intensive programs. Although providing patient-centered and nonstigmatizing nutrition and activity counseling is important for children of all weight classifications, there is no evidence to support either watchful waiting or unnecessary delay of appropriate treatment of children who have already developed obesity. Many children are only referred to treatment programs when their obesity has become more severe.529,626  A delay in care ultimately reduces the likelihood of treatment success for the child.649 

Similarly, no evidence supports selectively referring patients to obesity treatment programs based on those who meet certain criteria, such as obesity severity, presence of comorbidities, and/or readiness or motivation to change. Although there is currently limited evidence for obesity treatment in children 2 through 5 years of age, excess weight gain in early life predicts future obesity650 ; therefore, future studies should examine treatment in this age group. Pediatricians and other PHCPs are advised to prioritize the most effective treatment available for patients with obesity and encourage patients and families to use these programs at the time of obesity diagnosis.555,615,642 

It is necessary to provide IHBLT within various sites of health care delivery. Face-to-face time with pediatricians and other PHCPs cannot realistically achieve the intensity that is most effective. Thus, RDNs, health behavior specialists, and exercise professionals should be part of the health care team and have critical skills for IHBLT. They can work within a multidisciplinary obesity treatment clinic, be embedded within a medical home organization so that they coordinate with pediatricians and other PHCPs, and participate in care through referrals. Given the number of children who meet criteria for treatment, and the current limitations on number of pediatricians and other PHCPs who deliver IHBLT, a significant effort toward medical home capacity-building will be needed to achieve equitable access for all children. Current programs are generally located in cities, and often in academic centers.651  An individual center may or may not offer the entire range of intensive treatment, including intensive lifestyle, pharmacotherapy, and surgery. Providers should be familiar with the treatment programs at local centers; their knowledge of the child and family, along with awareness of available options, can guide treatment direction. Rural communities need resources and programs, especially ones that accommodate the distinct challenges of rural living, including transportation and economic and cultural factors.652 

On the strength of the literature, the USPSTF gives the evidence for intensive “lifestyle” treatment of childhood obesity a “B” rating, which means that health plans should cover this care.79,625  The USPSTF is authorized by Congress to assign grades to the state of the evidence regarding treatment options for diseases. Under the Affordable Care Act, grades of “A” or “B” are mandated to be covered with no deductibles, copayments, or cost-sharing.653  A large gap currently exists, however, between this expectation and the actual policies in state Medicaid and commercial health plans. Health care systems should build the capacity necessary to deliver this evidence-based level of care (see the Implementation Barriers section for more discussion).

E. When Intensive Programs Are Not Available

Pediatricians and other PHCPs are on the frontline of identifying overweight and obesity. Consistent success in behavior-based obesity treatment is highly related to treatment intensity. Both individual and systemic barriers may, however, keep many families from receiving the recommended moderate- to high-intensity multicomponent obesity treatment. In addition, pediatricians and other PHCPs should be aware that pediatric patients who seek bariatric surgical treatment may encounter significant disparities in access to care based on demographics, SES, and insurance type.654 

Availability of IHBLT or other treatments is generally poor, as described in a Children’s Hospital Association report in 2013.655  Differences in access based on demographics and similar factors have not been well studied. A consortium of academic centers with pediatric weight management programs reported a high proportion of publicly insured patients and racial and ethnic diversity626 ; however, these sites are safety-net medical centers in larger cities and, as such, are a small sample of the children in the United States with obesity. Pediatricians and other PHCPs are encouraged to pay attention to difference in care access and seek mechanisms to mitigate these challenges.654 

Although the health care and payment systems often limit the time and resources available within the primary care office, families can benefit from guidance outside of intensive programs, including pre and postprogram participation. Several successful studies have been conducted in the primary care setting, with less than 5 hours of treatment and using individual visits rather than group visits. These treatments varied in their approach and included clinical decision support built into electronic health records (EHRs), MI, and a self-guided curriculum for teens and parents.525,529,591  Strategies that may help pediatricians and other PHCPs include use of EHRs to remind and streamline care during office visits, MI training to effectively encourage families to take action, and resources for families to use outside of office visits.

When an IHBLT is not available, pediatricians and other PHCPs can increase the intensity of weight management support through collaboration and by connecting families with community resources to support nutrition and address food insecurity (eg, food provision programs), physical activity (eg, local parks, recreation programs), and other SDoHs. Pediatricians and other PHCPs should familiarize themselves with resources and actively collaborate with other specialists and community programs.

For example, pediatricians and other PHCPs should assess the availability and pediatric expertise of local dietitians and offer referrals to patients where possible. RDNs can assess a child’s nutritional needs, including appropriate food groups and portion sizes, and provide guidance for specific diet needs and preferences, including cultural patterns. Some RDNs have received special certification in pediatric and adolescent obesity, and the Academy of Nutrition and Dietetics offers RDNs additional learning opportunities in pediatric and adolescent obesity and encourages training in patient-centered counseling techniques. RDNs can complement the care of medical providers and may be the most widely available specialist with whom pediatricians and other PHCPs can work to provide more intensive behavioral intervention. Behavioral health specialists, ideally integrated into primary care, can focus on the process of behavior change, including parenting skills, role modeling, and consistent reinforcement techniques.

Implementation tools can help address actions in low-resourced settings. Exercise specialists can provide counseling and training to engage children and families in noncompetitive, cooperative, fun, aerobic and nonaerobic activities. Behavior goals related to physical activity include aiming for the physical activity guidelines of 60 minutes perday of moderate to vigorous physical activity635,642  and reducing time spent in sedentary behavior.656  Physical activity limitations, such as joint pain related to musculoskeletal comorbidities or increased work of breathing related to severe obesity, should be considered, and a stepped care plan for a gradual increase in physical activity can be made. Medicaid and other insurance plans may restrict coverage to specific medical conditions which do not include obesity or risk factor reduction. Providers can search for community programs that follow a philosophy of noncompetitive, fun activities, ideally engaging the whole family. See Figure 4 for facilitators of successful health behavior lifestyle treatment.

FIGURE 4

Facilitators for successful health behavior lifestyle treatment (this figure highlights some of the factors that are associated with successful health behavior and lifestyle treatment).

FIGURE 4

Facilitators for successful health behavior lifestyle treatment (this figure highlights some of the factors that are associated with successful health behavior and lifestyle treatment).

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Consensus Recommendations

The CPG authors recommend that pediatricians and other PHCPs:

F. Specific Health Behavior Recommendations

Many pediatricians and other PHCPs, especially those in primary care, have an important role in recommending specific health behaviors to improve energy balance. The following specific health behavior recommendations do not form a KAS, because randomized controlled trial (RCTs) that test each in isolation do not exist and are unlikely to be performed.

Effective programs described in the technical report incorporated many nutrition, physical activity, and behavior change strategies simultaneously, an approach that is responsive to the multiple behaviors that contribute to energy imbalance. Single-component interventions, such as physical activity alone, were generally not successful, and the multicomponent studies were not designed to isolate the impact of one component over another. If the study target were too narrow (for example, consumption of 5 fruits and vegetables a day), any impact on weight or BMI would likely be too small to detect.

Most of the successful interventions described in the technical report described nutrition counseling without a structured diet. (Exceptions were a small study that found both low and modified carbohydrate diets were better than control,572  and a study that found a focus on only beverages and a focus on multiple nutrition changes were both superior to control but not different from each other.571 ) Two effective studies of adolescents implemented caloric restriction of 1300 to 1550 calories per day, but the interventions also included additional components, such as physical activity promotion and behavior change strategies.563,591  Two small studies found benefit from interventions that reduced glycemic load.564,574 

Despite the lack of evidence for specific strategies on weight outcomes, many of these strategies have clear health benefits and were components in RCTs of intensive behavioral intervention. Many strategies are endorsed by major professional or public health organizations. Therefore, pediatricians and other PHCPs can appropriately encourage families to adopt these strategies.

Pediatricians and other PHCPs should present these specific strategies in the context of MI, helping families to identify their own goals and to determine steps to overcome barriers in making change. The AAP’s Next Steps: A Practitioner’s Guide of Themed Follow-up Visits to Help Patients Achieve a Healthy Weight provides step-by-step strategies for the pediatrician or other PHCP on content and delivery of each theme, including portion sizes, screen time and sleep, meal patterns and snacks, and bullying and teasing.657,658 

Table 18 lists specific behavior strategies endorsed by major professional and public health organizations. Some systematic reviews are cited, which include many association studies, but a comprehensive search for studies and reviews was not performed.

TABLE 18

Behavior Strategies

Strategy Description References
Reduction of sugar-sweetened beverages (SSBs) Higher intake of sugar-sweetened beverages (carbonated beverages, sweetened beverages, soda, sports drinks, and fruit drinks) is associated with greater wt gain in adults and children. The American Heart Association (AHA) recommends not more than 25 g (6 tsp) each day of added sugar and not more than 1, 8-oz serving of SSB per week. The AAP discourages the consumption of sports drinks and energy drinks for children and adolescents. The AAP statement on fruit juice notes that it is a poor substitute for whole fruit because of its high sugar and calorie content and pediatricians should advocate for elimination of fruit juice in children with excessive wt gain. Systematic review659 ; AHA SSB660 ; AAP sports and energy drinks661 ; AAP fruit juice662  
Choose My Plate MyPlate is the US Department of Agriculture’s (USDA) broad set of recommendations for healthy eating for Americans. These recommendations include multiple healthy diet goals: low in added sugar, low in concentrated fat, nutrient dense but not calorie dense, within an appropriate calorie range without defined calorie restriction, and with balanced protein and carbohydrate. The principles can be adapted to different food cultures. There is a surprising dearth of literature on the impact of these guidelines on health and BMI outcomes and on the most effective education practices. USDA choosemyplate.gov 
60 min daily of moderate to vigorous physical activity Aerobic exercise, especially for 60 min at a time, is associated with improved body weight in youth although its effect may be small and variable. It is also associated with better glucose metabolism profiles. High-intensity interval training in youth with obesity may improve body fat, weight, and cardiometabolic risk factors, although the effect is variable.663  The Physical Activity Guidelines for Americans recommends 60 min per day for children and adolescents. Systematic reviews664667 ; AAP physical activity; Guidelines for Americans379,635  
Reduction in sedentary behavior Reduction in sedentary behavior, generally defined as reduced screen time, has consistently shown improvement in BMI measures, although impact is small. Early studies focused on reduced television, a discrete activity that is simpler than current multifunctional electronic devices. The AAP recommends no media use under age 18 mo, a 1-h limit for ages 2–5 y, and a parent-monitored plan for media use in older children, with a goal of appropriate, not-excessive use but without a defined upper limit. AAP media and young minds170 ; systematic review656  
Strategy Description References
Reduction of sugar-sweetened beverages (SSBs) Higher intake of sugar-sweetened beverages (carbonated beverages, sweetened beverages, soda, sports drinks, and fruit drinks) is associated with greater wt gain in adults and children. The American Heart Association (AHA) recommends not more than 25 g (6 tsp) each day of added sugar and not more than 1, 8-oz serving of SSB per week. The AAP discourages the consumption of sports drinks and energy drinks for children and adolescents. The AAP statement on fruit juice notes that it is a poor substitute for whole fruit because of its high sugar and calorie content and pediatricians should advocate for elimination of fruit juice in children with excessive wt gain. Systematic review659 ; AHA SSB660 ; AAP sports and energy drinks661 ; AAP fruit juice662  
Choose My Plate MyPlate is the US Department of Agriculture’s (USDA) broad set of recommendations for healthy eating for Americans. These recommendations include multiple healthy diet goals: low in added sugar, low in concentrated fat, nutrient dense but not calorie dense, within an appropriate calorie range without defined calorie restriction, and with balanced protein and carbohydrate. The principles can be adapted to different food cultures. There is a surprising dearth of literature on the impact of these guidelines on health and BMI outcomes and on the most effective education practices. USDA choosemyplate.gov 
60 min daily of moderate to vigorous physical activity Aerobic exercise, especially for 60 min at a time, is associated with improved body weight in youth although its effect may be small and variable. It is also associated with better glucose metabolism profiles. High-intensity interval training in youth with obesity may improve body fat, weight, and cardiometabolic risk factors, although the effect is variable.663  The Physical Activity Guidelines for Americans recommends 60 min per day for children and adolescents. Systematic reviews664667 ; AAP physical activity; Guidelines for Americans379,635  
Reduction in sedentary behavior Reduction in sedentary behavior, generally defined as reduced screen time, has consistently shown improvement in BMI measures, although impact is small. Early studies focused on reduced television, a discrete activity that is simpler than current multifunctional electronic devices. The AAP recommends no media use under age 18 mo, a 1-h limit for ages 2–5 y, and a parent-monitored plan for media use in older children, with a goal of appropriate, not-excessive use but without a defined upper limit. AAP media and young minds170 ; systematic review656  

Table 19 presents strategies that are common but have not at this time been addressed by the AAP or other major health organizations. For some, rigorous systematic reviews provide information about potential benefit as well as harm or lack of harm. Brief mention of existing literature is included, but extensive searches for publications were not performed.

TABLE 19

Common Strategies

Strategy Description References
Avoidance of breakfast skipping Breakfast skipping among children is associated with overweight and obesity and with lower quality of dietary intake throughout the day. Systematic review668  
Traffic Light Diet This approach to teaching healthy eating has shown consistent success within the context of moderate- to high-intensive multicomponent programs, in which experienced providers help families learn and use the diet. Evidence summary can be found on the Academy of Nutrition and Dietetics Web site: https://www.andeal.org/topic.cfm?cat=1429&evidence_summary_id=250033&highlight=traffice%20light%20diet&home=1
5 2 1 0 This messaging emerged from a consortium of primary care pediatricians as simple, memorable, and feasible (www.mainehealth.org/Lets-Go/Childrens-Program). Each component of 5-2-1-0 messaging aligns with a major recommendation or guideline: 5 fruits and vegetables a day is consistent with the USDA ChooseMyPlate recommendations, 2 h or less of screen time is consistent with earlier versions of AAP policy; 1 h or more of moderate to vigorous physical activity is consistent with Physical Activity Recommendations for Americans, and 0 (or nearly no) sugar-sweetened beverages aligns with USDA, AHA, and AAP. Scant literature on weight or BMI impact.669,670  Attainment of 5-2-1-0 behaviors is low.671  
Use of screen-based physical activity (exergames) Video games that require physical activity can reduce children’s body wt. Players can reach levels of light-to-moderate intensity physical activity during exergame play, especially games that involve whole-body movement. Systematic reviews have shown that children can lose body weight or attenuate weight gain when playing exergames over a sustained period of time. Specific setting in which exergaming resulted in weight, adiposity, or BMI z-score improvement included home, part of a structured physical activity program, and part of a multicomponent obesity treatment. Children experienced modest reductions in weight, adiposity, or BMI z-score when exergames were provided in the home, within a structured physical activity program, and within an obesity treatment program. There is less evidence to date for newer technologies like smartphone apps and wearables, but these are promising tools to engage and sustain youths’ interest in healthy behaviors. 645,672683  
Appropriate amount of sleep for age Obesity is associated with shorter sleep duration, and the association appears to be driven by increased calorie consumption, decreased physical activity from fatigue, and potential hormonal and metabolic alterations such as increased ghrelin and decreased leptin leading to hunger. Systematic review243247  
Strategy Description References
Avoidance of breakfast skipping Breakfast skipping among children is associated with overweight and obesity and with lower quality of dietary intake throughout the day. Systematic review668  
Traffic Light Diet This approach to teaching healthy eating has shown consistent success within the context of moderate- to high-intensive multicomponent programs, in which experienced providers help families learn and use the diet. Evidence summary can be found on the Academy of Nutrition and Dietetics Web site: https://www.andeal.org/topic.cfm?cat=1429&evidence_summary_id=250033&highlight=traffice%20light%20diet&home=1
5 2 1 0 This messaging emerged from a consortium of primary care pediatricians as simple, memorable, and feasible (www.mainehealth.org/Lets-Go/Childrens-Program). Each component of 5-2-1-0 messaging aligns with a major recommendation or guideline: 5 fruits and vegetables a day is consistent with the USDA ChooseMyPlate recommendations, 2 h or less of screen time is consistent with earlier versions of AAP policy; 1 h or more of moderate to vigorous physical activity is consistent with Physical Activity Recommendations for Americans, and 0 (or nearly no) sugar-sweetened beverages aligns with USDA, AHA, and AAP. Scant literature on weight or BMI impact.669,670  Attainment of 5-2-1-0 behaviors is low.671  
Use of screen-based physical activity (exergames) Video games that require physical activity can reduce children’s body wt. Players can reach levels of light-to-moderate intensity physical activity during exergame play, especially games that involve whole-body movement. Systematic reviews have shown that children can lose body weight or attenuate weight gain when playing exergames over a sustained period of time. Specific setting in which exergaming resulted in weight, adiposity, or BMI z-score improvement included home, part of a structured physical activity program, and part of a multicomponent obesity treatment. Children experienced modest reductions in weight, adiposity, or BMI z-score when exergames were provided in the home, within a structured physical activity program, and within an obesity treatment program. There is less evidence to date for newer technologies like smartphone apps and wearables, but these are promising tools to engage and sustain youths’ interest in healthy behaviors. 645,672683  
Appropriate amount of sleep for age Obesity is associated with shorter sleep duration, and the association appears to be driven by increased calorie consumption, decreased physical activity from fatigue, and potential hormonal and metabolic alterations such as increased ghrelin and decreased leptin leading to hunger. Systematic review243247  

When actively intervening to treat overweight and obesity in the primary care setting, pediatricians and other PHCPs should also evaluate and address the modifiable risk factors for obesity that are described in the Risk Factors section. These include parenting feeding styles, frequency of dining out and eating fast food, and ACEs, among other household risk factors. Awareness of supports and barriers in the patient’s community will also help guide the family to resources outside the home, such as parks and recreation programs, community gardens, and school wellness policies.

Parents and caregivers have a crucial role to play in obesity treatment through strategies such as parental monitoring, limit setting, reducing barriers, managing family conflict, and modifying the home environment.15,684,685  A systematic review of parental involvement in childhood obesity treatment studies found that medium- to high-intensity parental involvement was associated with weight-related measures of treatment effectiveness.686  Parents can serve as role models and provide support in obesity treatment. In addition, an enhanced parent-child relationship functions as a mediator in development of healthier behaviors and further weight control.687  Parents themselves and family relationships may also benefit from children’s obesity treatment.

A recent systematic review found that certain common features involving parents in obesity treatment interventions with their preadolescent children were successful in producing nutrition and physical activity behavior change. These features include promotion of intrinsic motivation and self-efficacy through empowerment of parents and children and fostering shared value and whole-family ownership. The activities most commonly associated with positive behavior change included parental leadership in goal setting, problem solving, social support, demonstrating desired behaviors, and restructuring the home environment. It is encouraging that the majority of studies that included low-income populations in this review found favorable results.688 

Adolescence can present substantial challenges to family-based care, because this period is marked by a developmentally normative period of increased desire for independence and autonomy, despite continued reliance on parents for many needs. Given these challenges, the research investigating specific clinical paradigms for parent involvement in adolescent obesity treatment demonstrates mixed findings regarding the ideal level of involvement and the specific parenting strategies that can optimize treatment. Further research and detailed reporting are needed to inform clinical guidelines for optimizing the role of parents in adolescent obesity treatment.634 

G. Self-Management

Obesity is a complex chronic disease with biologic, environmental, and other causative factors that are systemic and operate at the local, regional, and global level. As with all chronic disease, the patient and family have to manage the demands of the disease and evidence-based treatment in the context of these factors. This means that individual patients and their families will have unique challenges to overcome based on the severity of their disease and the adversity of their environments. Effective obesity treatment helps patients and families develop self-management strategies that are critical for chronic disease management in this context.

Self-management has been defined as “the development of a range of attitudes, health behaviours and skills to help minimize the impact of their condition on all aspects of life for themselves and their families and caregivers.”689  Self-management has also been described “as a dynamic, interactive, and daily process in which individuals engage to manage a chronic illness,”690  and “the ability of the individual, in conjunction with family, community, and health care professionals, to manage symptoms; treatments; lifestyle changes; and psychosocial, cultural, and spiritual consequences of health conditions.”691  For example, dietary change is an important treatment strategy in the self-management of many chronic diseases692,693  and is about “tailoring support to improve knowledge, skills and confidence”694  by promoting facilitators such as “location, language, incentive and tailored resources”695  while mitigating barriers, such as inadequate knowledge or skills or lack of time.696  For young children and children with disabilities, “self-management” may apply to caregivers on behalf of or in conjunction with the patient.

The complex environment in which children and adolescents with obesity and their families live needs to be acknowledged in the way providers individualize and tailor self-management supports.

H. Treatment Considerations for Children and Youth With Special Health Care Needs

CYSHCN are those who have, or who are at increased risk for, a chronic physical, developmental, behavioral, or emotional condition and who also require health and related services of a type or amount beyond that required by children generally.74 

It is important that management of obesity for CYSHCN includes similar protocols and processes as those for children with typical development. This includes assessing health behaviors, identifying community resources and policies, sharing appropriate resources, and promoting healthy behaviors.697,698  Pediatricians and other PHCPs are encouraged to assess risks contributing to obesity in collaboration with families and interdisciplinary teams (specialists, psychologists, primary care providers, mental health professionals, social workers, physical therapists, and dietitians), providing their patients (CYSHCN) and their families with essential skills and resources to manage obesity.

In addition, it is critical to recognize that CYSHCN may have physical, emotional, and/or cognitive condition(s) preventing them from engaging in community or clinical activities that are available for their peers with typical development.699  Therefore, creative solutions for promoting physical activity and healthy nutrition and behavior change are vital for this special population. Solutions come from guidance and supervision from families, health care providers, and community recreation staff for appropriate physical activities and consumption of healthier food options.700702 

It is essential to emphasize the numerous benefits of recreational activities for CYSHCN to include improve socialization, fitness level, and motor and movement skills.703,704  Additional nutrition, physical activity, and sedentary time recommendations can be found in a recent report from the Healthy Weight Research Network, an interdisciplinary group of clinical investigators and experts providing obesity treatment of children with autism and other intellectual and/or developmental disabilities.697 

The International Classification of Functioning (ICF), Disability, and Health model and AAP recommendations are appropriate frameworks related to assessing pertinent health conditions and contextual factors affecting CYSHCN to aid in planning to treat obesity, as seen in Fig 5. The ICF framework can be used to organize approaches in the management of childhood obesity.

FIGURE 5

The ICF framework and the F-words.705  Used with permission.

FIGURE 5

The ICF framework and the F-words.705  Used with permission.

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Children with obesity-related genetic syndromes, behavioral difficulties, developmental disabilities, and hypothalamic disorders (Table 2) have added obesity risk and may need additional supports in obesity treatment.316 

Hyperphagia can be particularly challenging to manage in CYSHCN. A combination of specific behavioral techniques within the context of family-based behavioral treatment and the use of pharmacotherapy may be necessary.700 

Prader Willi syndrome is a complex genetic disorder affecting 1 in 15 000 to 1 in 30 000 people and is associated with obesity and hyperphagia.706,707  Specific recommendations for health supervision and multicomponent care can help pediatricians and other PHCPs institute a longitudinal treatment approach to care.

Hypothalamic obesity is a neuroendocrine disorder resulting from damage to the hypothalamus, disrupting the body’s energy regulatory system, which requires intensive multicomponent treatment.708 

ADHD is associated with obesity, and symptoms such as deficits in alertness and attention that are caused by sleep-disordered breathing attributable to obesity can overlap with those of ADHD. Impulsivity in ADHD may contribute to dysregulated eating and weight gain. Effective treatment of ADHD in children with obesity can be associated with attainment of healthier weight status.709 

I. Use of Pharmacotherapy

Consensus Recommendation

The CPG authors recommend pediatricians and other PHCPs:

Although IHBLT has the largest body of evidence meeting the evidence review’s high-quality evidence for effectiveness criteria, it is important to consider the use of pharmacotherapy for children and adolescents who require an additional treatment option to manage their obesity. In particular, children with more immediate and life-threatening comorbidities, those who are older, and those affected by more severe obesity may require additional therapeutic options. For children younger than 12 years, there is insufficient evidence to provide a KAS for use of pharmacotherapy for the sole indication of obesity. There are, however, specific conditions outlined below for which use of medication may be indicated. Additionally, although the evidence is insufficient at the time of this evidence review, the use of pharmacotherapy to aid BMI reduction in children is a rapidly evolving field; new evidence may lead to additional options for children younger than 12 years in the future.

Studies Included

At the time of the evidence review for this CPG, 27 randomized studies met the inclusion criteria for review, and an additional 8 observational studies were also considered. The majority of the studies evaluated the efficacy of metformin either alone (n = 16 randomized, 7 observational) or in combination with other medications (n = 7 randomized). Other studies evaluated orlistat (n = 2 randomized), exenatide (n = 2 randomized), or other medications with only 1 study cited (phentermine, mixed carotenoids, topiramate, ephedrine, and recombinant human growth hormone). Since the evidence review, additional high-quality evidence has been published to define the safety and efficacy of novel agents (setmelanotide, liraglutide, and the combination phentermine or topiramate) and are included in this discussion.

Medication Use and Mechanisms of Action

Metformin is an antidiabetic agent used in T2DM among patients 10 years and older. Metformin also has several indications not approved by the US Food and Drug Administration (FDA), including prediabetes, PCOS, and prevention of weight gain when used with atypical antipsychotic medications. Metformin is a biguanide drug that reduces blood glucose levels by decreasing blood glucose production in the liver, decreasing intestinal absorption, and increasing insulin sensitivity. It comes in immediate- and extended-release formulations; the recommended starting dose is 500 mg, once or twice daily, with gradual increases up to a maximum total daily dose of 2500 mg. Adverse effects are dose-dependent, and include bloating, nausea, flatulence, and diarrhea. Lactic acidosis is a serious but very rare complication in pediatric populations.711 

Metformin has not been approved as a weight-loss drug. A 2020 meta-analysis of metformin studies in adults with obesity showed modest (<5%, or 1 BMI unit) weight reduction with metformin when used as an adjunct to lifestyle; however, the effectiveness is inconsistent across different populations.712  The evidence for effectiveness of metformin for weight loss in pediatric populations is similarly conflicting. One small study randomized 39 teens 13 to 18 years of age with obesity participating in a lifestyle modification program to either metformin hydrocholoride XR 2000 mg, or placebo once daily for 48 weeks.713  Adolescents taking metformin reduced BMI by approximately 1 kg/m2 as compared with a slight increase in BMI among teens in the lifestyle-only program.

Another well-designed randomized study of 100 children 6 to 12 years of age with severe obesity (mean BMI 34.6 kg/m2) showed a BMI reduction of approximately 1 kg/m2 at a dose of 1000 mg twice daily for 6 months, also as an adjunct to lifestyle treatment.714  Gastrointestinal symptoms limited the tolerated maximum dose in nearly 20% of patients, however, and no additional BMI reduction was noted with treatment beyond 6 months. Of the 16 studies of metformin that met quality inclusion criteria for the evidence review, about two-thirds showed modest BMI reduction.713724  One-third showed no benefit.725728 

The effective studies typically included higher metformin doses, more intensive lifestyle adjunct treatment, and use in children or adolescents with more severe obesity and/or a secondary diagnosis, such as prediabetes or PCOS. Given the modest and inconsistent effectiveness, metformin may be considered as an adjunct to intensive health behavior and lifestyle treatment and when other indications for use of metformin are present.

Orlistat is an intestinal lipase inhibitor that blocks fat absorption through inhibition of pancreatic and gastric lipase. It is currently approved for children 12 years and older at a dose of 120 mg, 3 times per day. Adverse effects include steatorrhea, fecal urgency, and flatulence; these adverse effects greatly limit tolerability, and thus, orlistat is uncommonly used in pediatric obesity treatment. Orlistat is FDA approved for long-term treatment of obesity in children 12 years and older.729,730 

Glucagon-like peptide-1 receptor agonists, such as liraglutide, exenatide, dulaglutide, and semaglutide, decrease hunger by slowing gastric emptying and by acting on targets in the central nervous system. Depending on the medication, the formulation is either oral or a daily or weekly subcutaneous injection. Two small studies of exenatide (weekly injection) among children as young as 8 years showed BMI reduction ranging from 0.9 to 1.18 U but with significant adverse effects. Exenatide is currently approved in children 10 to 17 years of age with T2DM. A recent randomized controlled trial found liraglutide (daily injection) more effective than placebo in weight loss at 1 year among patients 12 years and older with obesity who did not respond to lifestyle treatment.710  The magnitude of the difference was approximately 4.5 kg body weight lost, or 5% BMI reduction. The starting dose is 0.6 mg per day up to a maximum dose of 3.0 mg per day, by subcutaneous injection. Adverse effects include nausea and vomiting, and among patients with a family history of multiple endocrine neoplasia, a slightly increased risk of medullary thyroid cancer.710  Liraglutide is FDA approved for long-term treatment of obesity (with or without T2DM) in children 12 years and older.

Melanocortin 4 receptor (MC4R) agonists, such as setmelanotide, act on the MC4R pathway to restore normal function for appetite regulation that has been disrupted because of genetic deficits upstream of the MC4 receptor. MC4 receptors in the brain regulate hunger, satiety, and energy expenditure. The daily dose is 1 to 3 mg daily, given subcutaneously, and results in weight loss of 12% to 25% over 1 year in a small, uncontrolled study of patients with these rare deficits. Common adverse effects include injection site reaction and nausea. Setmelanotide is FDA approved for patients 6 years and older with proopiomelanocortin (POMC) deficiency, proprotein subtilisin or kexin type 1 deficiency, and leptin receptor deficiency confirmed by genetic testing.

Phentermine is a central norepinephrine uptake inhibitor but also nonselectively inhibits serotonin and dopamine reuptake and reduces appetite. Recommended doses include 7.5 mg, 15 mg, 30 mg, or 37.5 mg, and adverse effects include elevated BP, dizziness, headache, tremor, dry mouth, and stomachache. Adverse effects are dose-dependent; however, effectiveness does not always increase with increasing dose. Phentermine is FDA approved for short-course therapy (3 months) for adolescents 16 years or older.

Topiramate is a carbonic anhydrase inhibitor and suppresses appetite centrally through largely unknown mechanisms. The major adverse effect is cognitive slowing, which can interfere with academic concentration or other activities of daily living. In addition, topiramate is a potential teratogen and requires counseling and reliable birth control for patients able to become pregnant. Typical dosing for headache prevention ranges from 25 mg a day to 100 mg a day in twice daily doses. Although topiramate has an indication for treatment of binge eating disorder in adults (age ≥ 18), only 1 study has evaluated the use of topiramate in children, and it did not differ from placebo. Topiramate is currently FDA approved for children 2 years and older with epilepsy and for headache prevention in children 12 years and older.

Phentermine and topiramate as a combination medication is approved for weight loss in adults. Recent data show that among adolescents 12 to 17 years of age with documented history of failure to lose sufficient weight or failure to maintain weight loss in a lifestyle modification program (mean age, 14 years; mean BMI, 37.8 kg/m2), BMI percent change at 56 weeks was -10.44 (high dose; 15 mg/ 92 mg) and −8.11 (mid dose; 7.5 mg/46 mg) as compared with placebo.731  Treatment also improved HDL and TG cholesterol profiles. Adverse events reported were not more common than placebo in the high- or mid-dose range.

Lisdexamfetamine is similar in mechanism to phentermine and is a stimulant-class medication approved for children 6 years and older with ADHD. It has an indication for treatment of binge eating disorder in patients 18 years and older; thus, it is used off-label for children with obesity. However, no evidence is available at the time of this review to demonstrate safety or efficacy for the indication of obesity in children.

Prescriber Qualifications

Weight loss medications require the same oversight and expertise in management as other medications used in pediatric care. To adequately inform patients and parents about the risks and benefits of off-label or experimental use of new therapies, pediatricians and other PHCPs who prescribe weight loss medications should have knowledge of the patient selection criteria, medication efficacy, adverse effects, and follow-up monitoring guidelines. In addition, injectable medications may require additional teaching for families that is not available in all primary care offices. Pediatricians and other PHCPs may choose to refer to pediatric obesity experts or treatment centers for prescribing weight loss medication.

No current evidence supports weight loss medication use as a monotherapy; thus, pediatricians and other PHCPs who prescribe weight loss medication to children should provide or refer to intensive behavioral interventions for patients and families as an adjunct to medication therapy.

J. Pediatric Metabolic and Bariatric Surgery

It is widely accepted that the most severe forms of pediatric obesity (ie, ≥class 2 obesity; BMI ≥ 35 kg/m2, or 120% of the 95th percentile for age and sex, whichever is lower) represent an “epidemic within an epidemic.” Moreover, severe obesity is a harbinger of the establishment and cumulative progression of numerous related comorbidities, diminished long-term health status, and shortened life expectancy.654,739 

For adults, the evidence supporting the clinical indications and associated recommendations on the use of metabolic and bariatric surgery is founded on a body of literature that has been expanding since the early 1960s.740  Corresponding analyses related to the use of various surgical weight loss procedures in pediatric populations have been primarily established in the last 20 to 30 years. Large contemporary and well-designed prospective observational studies have compared adolescent cohorts undergoing bariatric surgical treatment versus intensive obesity treatment or nonsurgical controls.

These studies suggest that weight loss surgery is safe and effective for pediatric patients in comprehensive metabolic and bariatric surgery settings that have experience working with youth and their families. Laparoscopic Roux-en-Y gastric bypass and vertical sleeve gastrectomy are both commonly performed in the pediatric age group and result in significant and sustained weight loss, accompanied by improvements and/or resolution of numerous related comorbid conditions.732  Laparoscopic adjustable gastric band procedures, approved by the FDA only for patients 18 years and older, have declined in use in both adults and youth because of worse long-term effects as well as higher-than-expected complication rates.647,652,654,655,706,732736,739744 

Similar to the adult experience, an expanding body of data shows that pediatric bariatric patients also experience durable reduction in BMI,152,744748  as well as significant improvement and/or complete amelioration of several obesity-related comorbid conditions. These include HTN, T2DM, dyslipidemia, cardiovascular disease risk factors, and weight-related quality of life.152,654,734 

Furthermore, recent evidence showing that adolescents had a higher probability of remission of certain cardiometabolic risk factors (T2DM and HTN) compared with adults highlights the argument that earlier surgical intervention may impart specific advantages related to the cumulative impact of chronic obesity-related diseases.736  The significantly lower magnitude of efficacy of intensive behavioral interventions—compared with larger and more durable improvements in BMI and comorbidity resolution after metabolic and bariatric surgery—has led to a significant increase in pediatric bariatric surgical case volume since the early 2000s.126 

The majority of complications following metabolic and bariatric surgery in the pediatric population are minor (15%), occur mostly in the early postoperative timeframe, and consist of a combination of postoperative nausea and/or dehydration, although major perioperative (30-day) complications have been reported in 8% of individuals.654,733  Subsequent related procedures may be required in 13% to 25% of patients up to 5 years following metabolic and bariatric surgery.744,746,747  In addition, recent data showing multiple micronutrient deficiencies following metabolic and bariatric surgery serve to highlight the need for routine and long-term monitoring.

Although the determination of eligibility for metabolic and bariatric surgery relies heavily on a multicomponent and individualized approach between members of the metabolic and bariatric surgery team, the patient, and the patient’s parents or guardians, initial steps toward consideration should be provided, when appropriate, within the medical home. Specifically, pediatricians and other PHCPs should be familiar with recent and clearly defined clinical and anthropometric benchmarks, which serve as a prompt for the initiation of these discussions with the patient and family and ongoing bilateral communication between the medical home and surgical center654,733  (Table 20). In addition to knowledge of indications for metabolic and bariatric surgery, pediatricians and other PHCPs should build and maintain skills in discussing this topic with families in a nonbiased and sensitive manner. Pediatricians and other PHCPs should also seek to establish a local and/or regional referral mechanism to qualified facilities that offer pediatric-focused metabolic and bariatric surgical services.

KAS 3. In children 10 y and older, pediatricians and other PHCPs should evaluate for lipid abnormalities, abnormal glucose metabolism, and abnormal liver function in children and adolescents with obesity (BMI ≥ 95th percentile) and for lipid abnormalities in children and adolescents with overweight (BMI ≥ 85th percentile to <95th percentile).

Aggregate Evidence Quality Grade B.
Benefits Allows for early detection and management to reduce risk factors for future cardiometabolic disease. Result will guide treatment. May motivate treatment engagement. 
Risks, harm, costs Cost, access, patient anxiety, labeling with chronic medical condition, stress, and time of undergoing treatment. 
Benefit-harm assessment Identification and management of cardiometabolic comorbidities in childhood and adolescence exceeds potential harm, especially for high-risk patients. 
Intentional vagueness Age. 
Role of patient preferences Parent and patient knowledge, family history, families’ concern about the test, ease and accessibility of testing should be considered. 
Exclusions <24 mo old. 
Strengths Strong. 
Key references 80, 86, 88, 90, 396, 397, 413416  
Aggregate Evidence Quality Grade B.
Benefits Allows for early detection and management to reduce risk factors for future cardiometabolic disease. Result will guide treatment. May motivate treatment engagement. 
Risks, harm, costs Cost, access, patient anxiety, labeling with chronic medical condition, stress, and time of undergoing treatment. 
Benefit-harm assessment Identification and management of cardiometabolic comorbidities in childhood and adolescence exceeds potential harm, especially for high-risk patients. 
Intentional vagueness Age. 
Role of patient preferences Parent and patient knowledge, family history, families’ concern about the test, ease and accessibility of testing should be considered. 
Exclusions <24 mo old. 
Strengths Strong. 
Key references 80, 86, 88, 90, 396, 397, 413416  
TABLE 20

Criteria for Pediatric Metabolic and Bariatric Surgery733 

Weight Criteria Criteria for Comorbid Conditions
Class 2 obesity, BMI ≥ 35 kg/m2 or 120% of the 95th percentile for age and sex, whichever is lower Clinically significant disease; examples include but are not limited to T2DM, IIH, NASH, Blount disease, SCFE, GERD, obstructive sleep apnea (AHI >5), cardiovascular disease risks (HTN, hyperlipidemia, insulin resistance), depressed health-related quality of life. 
Class 3 obesity, BMI ≥ 40 kg/m2 or 140% of the 95th percentile for age and sex, whichever is lower Not required but commonly present. 
Weight Criteria Criteria for Comorbid Conditions
Class 2 obesity, BMI ≥ 35 kg/m2 or 120% of the 95th percentile for age and sex, whichever is lower Clinically significant disease; examples include but are not limited to T2DM, IIH, NASH, Blount disease, SCFE, GERD, obstructive sleep apnea (AHI >5), cardiovascular disease risks (HTN, hyperlipidemia, insulin resistance), depressed health-related quality of life. 
Class 3 obesity, BMI ≥ 40 kg/m2 or 140% of the 95th percentile for age and sex, whichever is lower Not required but commonly present. 

AHI, apnea-hypopnea index.

Individual determination of eligibility status at the time of referral to a center that offers metabolic and bariatric surgical intervention for the pediatric population involves a comprehensive and multidisciplinary assessment of longitudinal BMI and comorbidity status as well as physiologic and psychosocial assessment, including the determination of potential contraindications such as correctable causes of obesity, ongoing substance use disorder, and pregnancy. Important elements include the ability to determine the patient’s and family’s capacity to understand the risks and benefits of metabolic and bariatric surgery and adhere to required lifestyle modifications leading up to and following such intervention. The evaluative process is rooted in a framework of thoughtful, shared decision making between the patient, parents(s) and/or guardian(s), and medical and surgical providers and ideally includes coordinated and ongoing communication with the patient’s medical home.654,733 

A referral to a comprehensive metabolic and bariatric surgery center with experience and expertise in treatment of patients younger than 18 years does not necessarily mean the child will ultimately have surgery. This referral provides the family with important information and additional evaluation of risks and benefits for use in making an informed decision. In the case of younger children, recommendations for referral to a comprehensive multidisciplinary obesity treatment center with surgical capability should be considered on a case-by-case basis.

Although data addressing surgical intervention in the younger age group are limited, recent comparative analysis show sustained efficacy and similar safety profiles when compared with adolescents.737,738  Additional research is needed before broad recommendations can be made for children 12 years and younger.

Age is not the sole determinant of eligibility for metabolic and bariatric surgery. The pediatrician or other PHCP should take into account the patient’s physical and psychosocial needs. Evaluation for metabolic and bariatric surgery should include a holistic view of the patient and family, including individual and social risk factors. Families should be fully informed of the benefits and risks of metabolic and bariatric surgery, and their preferences are paramount. As highlighted in a recent AAP policy statement, the decision to continue care with a pediatrician or pediatric medical or surgical subspecialist should be made solely by the patient (and the family, as appropriate).749 

Insurance authorization is a key consideration for individuals considering metabolic and bariatric surgical intervention regardless of age; however, data highlight a significant disparity regarding benefit coverage when comparing pediatric versus adult populations.126  Efforts to determine coverage availability, including potential mitigation strategies designed to address coverage gaps, should be the focus of early discussions between the family, medical home, and metabolic and bariatric surgical specialty providers. Children and adolescents who are referred for evaluation for metabolic and bariatric surgery should have this referral visit covered, and those who are deemed eligible for metabolic and bariatric surgery should have their preparation visits, the surgery itself, hospitalization, postoperative visits, and ongoing care covered.

K. Comprehensive Obesity Treatment (COT) for Children and Adolescents

The essential components of COT of children and adolescents include treatment of the obesity as a chronic disease and evaluation and management of comorbidities. This treatment is delivered by primary care providers and their teams, in collaboration with pediatric obesity specialists, allied health providers, community partners, and metabolic and bariatric surgery teams.

COT: COT includes79,80 :

Who delivers COT? Ideally, primary care teams and pediatric weight management specialty teams will partner to provide COT for children and adolescents with obesity. Primary care providers evaluate for obesity, evaluate for comorbidities, and provide patient-centered and evidence-based nutrition and physical activity guidance, using MI. Some primary care practices may also be able to provide IHBLT and pharmacotherapeutic options. IHBLT, regardless of where it is delivered, requires the allocation of significantly more time and resources than are typical in the provision of routine well childcare. Coordination in the medical home with additional professionals, such as dietitians, exercise specialists and behavioral health practitioners, will depend on the child’s COT plan and available resources. Pediatric health care providers can augment COT with referral to community resources and programs (see algorithm in Appendix 1).

XII. Systems of Care for Children With Overweight and Obesity

Obesity is a chronic disease—similar to asthma and diabetes. Children and adolescents with obesity have the potential to benefit from the foundational standards for systems of care designed for children and youth with special health care needs.153,750  CYSHCN are defined as “those who have or are at increased risk for a chronic physical, developmental, behavioral, or emotional condition and who also require health and related services of a type or amount beyond that required by children generally.”74  The principles of the chronic care model and the medical home that can also benefit children with obesity include the following:

A. Provision of Evidence-based Care

All care provided to children and youth with obesity and their families should be evidence based where possible; where evidence-based approaches do not exist, care should be evidence informed and/or based on promising practices.

As pediatric obesity becomes an increasing public health issue and recognizable chronic disease, it becomes critical to rely on evidence-based medicine and or expert recommendations to establish prevention, assessment, and treatment of obesity. To date, several guidelines have been developed and updated to address obesity in children. Examples include “Pediatric Obesity—Assessment, Treatment, and Prevention: An Endocrine Society Clinical Practice Guideline,” and “Expert Committee Recommendations Regarding the Prevention, Assessment, and Treatment of Child and Adolescent Overweight and Obesity.” These guidelines have been critical in moving forward with the prevention, assessment, and treatment of obesity in children as new research is conducted and more new evidence becomes available. This CPG adds to this body of knowledge.15,268,685 

B. Partnership With Children and Families

Children and families of children and youth with obesity should be active and core partners in decision making in all levels of care.

Patient-centered care involves not only an understanding of the family’s social and cultural context but also an appreciation for their desires as decisions are made about obesity treatment. Family desire for treatment should not be assumed despite attendance at primary care or specialty weight management visits. Pediatricians’ and other PHCPs’ use of MI techniques can, however, reinforce the importance of family-driven treatment decisions and foster families’ internal motivation that can sustain treatment. As a relationship is built with the family, MI can form the foundation for shared decision making between pediatricians (and other PHCPs) and families about treatment continuation and intensification.751 

The advent of parent and patient EHR portals has enabled bidirectional communication between families and health care teams and can facilitate shared decision making in obesity treatment. Additional facilitators may include tools featuring direct input from families, such as care plans and care coordination agreements.752  A patient decision aid to promote shared decision-making about options for adolescent severe obesity treatment was found to be feasible and acceptable by pediatricians (and other pediatric health care providers) and families.753 

C. Provision of Health Care That Recognizes Cultural Values

All services and supports for children and youth with obesity and their families should be implemented and delivered in a linguistically appropriate and accessible manner that recognizes cultural values.

All written materials provided to children and youth with obesity and their families should be culturally appropriate and in a manner and format appropriate for children and their parents or caregivers who have limited English proficiency, lower levels of literacy, or sensory impairments. With families with limited English proficiency, vigilance is needed to also provide a trained interpreter and use growth charts in educating about obesity.754 

D. Medical Home

Children With Obesity Should be Cared for in a Medical Home

The benefits of a medical home for children and youth with obesity include streamlined care, efficient use of resources (home-, school-, and community-based services), expanded expertise and competence for the involved providers, establishment of a forum for problem solving, and improved satisfaction for the patient, family, and provider. Primary care providers can help identify children early as obesity is developing and base intervention efforts on family dynamics and reduction in high-risk dietary and activity behaviors.755  Linkages should also be established between primary care practices and obesity treatment clinics to coordinate care with obesity specialists when necessary (eg, psychologist, dietitian, physician). The medical home also provides an effective model for implementing successful transitions to adult-oriented systems to treat obesity.

E. Transition to Adult Primary Care Providers

Children and adolescents with obesity should have a plan for a transition of care to adult primary care providers.

Transition of care for children with obesity to adult primary care providers is an important field for which evidence and recommendations have been developing. Generally, the concept of transition of care highlights the importance of the collaboration of the primary and/or subspecialty pediatric, adolescent, or family medicine care team, with the adult provider who is preparing to assume the role of primary care provider for a young adult. The importance of a formal transition plan has been shown in children with diabetes mellitus, sickle cell disease, and congenital heart disease.468,756762  Specifically, transition of care plans have been shown to improve knowledge and self-efficacy and help to integrate the young adult into a new medical home or neighborhood.757,761,763,764 

The transition of care literature for childhood obesity is limited but growing.752,765,766  In general, transition of care for obesity involves the development of specific goals and a timeline for the transition.759  This also includes the development of a registry type system to track and alert pediatricians and other PHCPs when a child reaches the age of 12 years so that outreach to the family to start the transition process can occur.468,762,763  It is generally understood that timing of these discussions and the actual transition of care to an adult primary care provider(s) or team depends on the individual needs of the patient and family as well as developmental and neurocognitive abilities. It is also understood that these discussions should be ongoing, at least annually. It is highly recommended that the providers and teams should be in direct communication with each other. Peer support groups are also highly recommended to assist the patient and family and to provide a peer network as part of the medical home.752,767 

The complex nature of obesity management and care, including the structured changes involved in behavioral strategies, the connection with community-based programs, and the need for medication therapy and surgery for a number of children and adolescents with obesity highlights the importance of a coordinated transition plan, frequent communication with the patient and family, and between providers and teams early on.752,765,766,768,770 

XIII. Barriers and Recommendations for CPG Implementation

Pediatricians and other PHCPs and families face numerous barriers to promoting healthy, active lifestyles and to supporting obesity treatment among children. The successful implementation of this CPG into routine practice requires careful consideration of barriers and facilitators at the policy, community, practice, and provider level that can modify implementation, effectiveness, and sustainability.

A. Policy Level

At the forefront of the policy-level barriers to the implementation of these guidelines are both direct and indirect costs that are associated with recommended evaluation and effective treatment of obesity. In 2010 and again in 2017, the USPSTF designated a grade B classification for evidence of effectiveness of childhood obesity screening and high-intensity, family-based behavioral treatment.79  Although a grade B designation should secure reliable insurance payment under the statutes of the Affordable Care Act , the lack of payment by insurers remains a major barrier to childhood obesity treatment.769,770  There is currently no consistent coverage of other evidence-based treatment strategies not explicitly included in the USPSTF recommendation.

Direct costs to families include payment for obesity evaluation and treatment that insurers do not pay for, as well as insurance plans with high deductibles or copays. These cost barriers make it difficult for families to access care, obtain laboratory testing, attend follow-up visits, and initiate and/or complete treatment programs. Differences in payment policies between public and private insurers and restrictive provider networks can make it challenging for pediatricians and other PHCPs to achieve consistent management practices. The overall lack of financial support from either insurance companies or families’ inability to pay for treatment programs disincentivizes the expansion of their availability, and there have not been robust studies on best practices for scaling up and sustaining effective treatment programs.

For patients and families, efforts to implement the recommendations for behavior change are also associated with indirect costs (such as time and costs associated with healthier foods and exercise) and are heavily impacted by policies at the federal, state, and local level. These policies include agricultural subsidies, school nutrition, and physical activity standards and curricula, zoning and public spaces to promote safe physical activity, tax deductions for direct advertising of unhealthy foods to minors, and nutrition labeling.771773  As the recent AAP policy statement on the role of racism in child health and well-being notes, the long-standing structural racism that has plagued these policies manifests in the form of limited access to high-quality education, safe neighborhoods for active play, healthy food, and health care for people of certain races and ethnicities.52,774 

One simulation-based cost effectiveness analysis of multiple interventions for childhood obesity found that 3 policies were estimated to be cost-saving; in other words, they would save more in health care costs through reduction in obesity prevalence than it would cost to implement.771  The policies are: (1) implementing an excise tax on SSBs; (2) elimination of the tax deduction for companies advertising unhealthy foods to children; and (3) improving nutrition standards for food and beverages sold in schools outside of meals. Another simulation study projected that an excise tax on SSBs, banning child-directed advertising of fast food, and providing after-school physical activity programs would all reduce obesity prevalence while also reducing disparities.773 

B. Community and Population Level

At the community and population level, SDoHs can limit the implementation and prioritization of health behavior recommendations (including counseling on nutrition, physical activity, sleep, and screen time) for both pediatricians (or other PHCPs) and families. These SDoHs include food security, safe neighborhoods and housing, health literacy, weight-related parenting skills, household chaos, and access to transportation.

Many communities lack access to evidence-based, high-intensity weight management programs for treatment, either in clinical or community-based settings.775,776  Telehealth and mobile technologies are emerging as a potential means to close this access gap, but little is known about the effectiveness of pediatric weight management treatments via these modalities.777  The well-described digital divide may also limit their utility among populations disproportionately impacted by obesity.778,779  A failure to consider these factors could lead to worsening disparities.

The recent iteration of the Obesity Chronic Care Model proposes an integrated framework for the prevention and treatment of obesity.521,780  The framework discusses the importance of coordinating and integrating approaches to address obesity across clinical and community systems as well as stakeholders. In doing so, an integrated approach strives to identify and address barriers to equitable implementation, access to healthier options, and data sharing. An important part of integration includes the identification of an integrator or convener that brings stakeholders together in a collaborative effort to address population health. Integrators are essential to addressing social determinants of health and complex problems that no single stakeholder can address.

C. Practice and Provider Level

At the practice and provider level, classic barriers to implementation of guidelines include the lack of time, resources, knowledge, awareness, self-efficacy (confidence in one’s ability to perform a behavior), and outcome expectancy (the belief that a recommended behavior will lead to a specific effect).781  Evidence indicates that clinical decision support (CDS) can be delivered through EHR systems to help overcome some of these practice- and provider-level barriers and improve evaluation and effective management. Evidence-based CDS tools include assessment components (ie, flagging abnormal heights, weights, and BMIs) and provision of suggestions for obesity treatment, such as order sets for recommended laboratory tests or other follow-up actions.529,782784  Most pediatric providers currently use EHRs that calculate and plot BMI; however, limitations of EHR systems hinder rapid dissemination and implementation of innovations to support practice.785787 

At the same time, EHRs can only do so much and are ineffective in the absence of a clinical workforce that is knowledgeable about evidence-based obesity treatment and skilled in delivering high-quality, patient-centered care that will yield improved health outcomes for children with obesity. The recent AAP policy statement on weight stigma highlights the detrimental effects of weight bias and ineffective approaches to the diagnosis and management of obesity.28 

XIV. Evidence Gaps and Future Research Directions

Research in the field of pediatric overweight and obesity has rapidly increased over the past decade and supports the evidence-based recommendations and guidelines contained in this CPG on the assessment and management of pediatric overweight and obesity. Although research has progressed in these areas, significant gaps remain and are described in detail in the accompanying technical reports. The gaps and limitations that are most relevant to pediatricians and other PHCPs treating children with obesity include duration and heterogeneity of treatment effects and limits in our understanding of how specific treatment components interact.

Despite these limitations, half of the lifestyle randomized-control trials reviewed were effective in reducing adiposity. Reports of future studies detailing specific treatment components, implementation of behavioral approaches, provider involvement in clinical practice, and the socioeconomic and cultural context of the family and community are needed to better understand which interventions work, for whom, and in what situations.

In addition to these critical areas for future research, there are other limitations that should be considered in the context of the guidelines.

For comorbidity assessment, studies were mostly cross-sectional, limiting the ability to assess within-individual changes in comorbidity prevalence across age and obesity class and, therefore, guidance on the appropriate age to begin laboratory evaluation for cardiometabolic comorbidities. Epidemiologic studies intended for specific age ranges and that examine comorbidity prevalence across different levels of overweight and obesity would help identify specific ages and BMI classes with increased prevalence of cardiometabolic comorbidities to focus further research. Longitudinal studies would also help identify the optimal age and BMI ranges to begin evaluation and are needed to monitor progression of comorbidity related to age and BMI level and provide guidance on the recommended frequency of comorbidity reevaluation. Consistent thresholds of laboratory values across studies are also needed.

Although many treatment studies examined change in biomedical outcomes as markers of secondary prevention of comorbidities, few studies in primary care evaluated outcomes other than BMI. Additionally, studies that assess if comorbidity assessment and/or diagnosis influences patient and family engagement in weight management treatment are lacking. The role of SDoHs and culture in the treatment of obesity comorbidities is also limited. Studies examining motivation for behavior change related to health outcomes and inclusion of SDOH factors in treatment outcomes are needed. Finally, most studies provided no or very limited assessment of harms or unintended consequences. In general, behavioral interventions carry low-risk of harms; this is not well-documented in the existing literature, however, as few studies report adverse events.

The scope of the evidence review for this CPG did not include primary prevention of obesity or assessment and treatment of children 0 to 2 years of age. Early prevention of obesity is important, as 1 in 7 preschool-aged children already have obesity, and disparities in obesity are evident in the first years of life.3  Identification and guidance on treatment strategies in this population are needed. Resources for primary prevention in children of all ages and treatment of children younger than 2 years can be found on the AAP Institute for Healthy Childhood Weight’s Web site (www.ihcw.aap.org) and are also provided in the implementation materials. Future CPGs should incorporate the voices of caregivers, children or adolescents, and organizations that represent families to lend important context.

In addition to the above, a list of other gaps and considerations for further research are provided in Table 21.

Type of Gap Example of Gap
Epidemiology • Key drivers of reducing obesity prevalence
• Predictors of severe obesity
• Factors associated with obesity among racial and ethnic groups, including impact of SDoHs on disparities
• Identification of medical costs associated with obesity and comorbidities 
Definition or measurement • Alternative, accurate measurements of adiposity in primary care;
• BMI trajectories in clinical practice and response to treatment over time;
• BMI trajectories and development of comorbid conditions;
• BMI status and trajectories among race/ethnic groups and the impact of social drivers on BMI status and trajectories 
Risk factors • Mechanism by which maternal obesity predisposes to adverse outcomes in the offspring
• Impact of sedentary behavior alone on BMI and comorbidities
• Improved understanding of associations between obesity and food insecurity 
Comorbidities • Age to begin evaluation for cardiometabolic comorbidities
• Frequency of evaluation to monitor progression of comorbidity
• Comorbidity identification as motivation for behavior change
• Role of social determinants of health in obesity comorbidities, especially among minority populations
• Role of social determinants of health in obesity comorbidities 
Treatment • Tailored age-based treatment approaches
• Evidence-based treatment options for 0–5 = year-olds
• Optimal level of parent involvement among adolescents in weight management
• Optimizing MI use with respect to training, fidelity to the MI process, and potential patient characteristics
• Evidence for specific components of intensive lifestyle intervention on BMI trajectory in clinical practice
• Approaches to intensive lifestyle intervention that are most effective, including clustering of behavioral recommendations, messaging, delivery, and implementation, especially in primary care
• Optimal duration of treatment, including strategies to address attrition and sustainability
• Adverse events of treatment
• Treatment outcomes by age, degree of obesity, and social determinants of health
• Studies reporting long term outcomes are limited
• Paucity of published studies reporting negative outcomes
• Evaluation of intervention on quality of life and mental health
• Studies of EHR tools, including clinical decision support, to improve attention to weight, counseling, and referral
• Telemedicine and electronic and mobile health approaches
• Robust community programs with clinical linkages
• Cultural considerations in wt management 
Systems of care • Feasibility of application and benefits of recommended systems of care for CYSHCN in obesity, including care transition strategies on the adolescents’ and young adult’s improvements in the treatment of obesity and health outcomes 
Barriers to and facilitators of CPG implementation • Evidence informing best practices for rapid, cost-effective, and sustainable scale up of effective treatment program for childhood obesity that balance fidelity with adaptability to unique contexts
• Research addressing the inconclusive evidence around technology-based interventions for obesity prevention777  
Type of Gap Example of Gap
Epidemiology • Key drivers of reducing obesity prevalence
• Predictors of severe obesity
• Factors associated with obesity among racial and ethnic groups, including impact of SDoHs on disparities
• Identification of medical costs associated with obesity and comorbidities 
Definition or measurement • Alternative, accurate measurements of adiposity in primary care;
• BMI trajectories in clinical practice and response to treatment over time;
• BMI trajectories and development of comorbid conditions;
• BMI status and trajectories among race/ethnic groups and the impact of social drivers on BMI status and trajectories 
Risk factors • Mechanism by which maternal obesity predisposes to adverse outcomes in the offspring
• Impact of sedentary behavior alone on BMI and comorbidities
• Improved understanding of associations between obesity and food insecurity 
Comorbidities • Age to begin evaluation for cardiometabolic comorbidities
• Frequency of evaluation to monitor progression of comorbidity
• Comorbidity identification as motivation for behavior change
• Role of social determinants of health in obesity comorbidities, especially among minority populations
• Role of social determinants of health in obesity comorbidities 
Treatment • Tailored age-based treatment approaches
• Evidence-based treatment options for 0–5 = year-olds
• Optimal level of parent involvement among adolescents in weight management
• Optimizing MI use with respect to training, fidelity to the MI process, and potential patient characteristics
• Evidence for specific components of intensive lifestyle intervention on BMI trajectory in clinical practice
• Approaches to intensive lifestyle intervention that are most effective, including clustering of behavioral recommendations, messaging, delivery, and implementation, especially in primary care
• Optimal duration of treatment, including strategies to address attrition and sustainability
• Adverse events of treatment
• Treatment outcomes by age, degree of obesity, and social determinants of health
• Studies reporting long term outcomes are limited
• Paucity of published studies reporting negative outcomes
• Evaluation of intervention on quality of life and mental health
• Studies of EHR tools, including clinical decision support, to improve attention to weight, counseling, and referral
• Telemedicine and electronic and mobile health approaches
• Robust community programs with clinical linkages
• Cultural considerations in wt management 
Systems of care • Feasibility of application and benefits of recommended systems of care for CYSHCN in obesity, including care transition strategies on the adolescents’ and young adult’s improvements in the treatment of obesity and health outcomes 
Barriers to and facilitators of CPG implementation • Evidence informing best practices for rapid, cost-effective, and sustainable scale up of effective treatment program for childhood obesity that balance fidelity with adaptability to unique contexts
• Research addressing the inconclusive evidence around technology-based interventions for obesity prevention777  

CPG, clinical practice guideline; CYSHCN, children and youth with special health care needs; EHR, electronic health record; MI, motivational interviewing.

XV. Conclusion—Putting it All Together

Pediatricians and other PHCPs now have more evidence-based tools than ever before that support obesity treatment that is effective, provides ongoing health benefits, supports children and families longitudinally, and reduces potential harms for disordered eating. In contrast to previous recommendations, these clinical guidelines highlight the urgency of providing immediate, intensive obesity treatment to each patient as soon as they receive the diagnosis of obesity.

As highlighted in the previous sections, there are Key Action Statements (KASs) that, collectively, comprise a holistic patient-centered approach to COT that should be coordinated within the context of the medical home. These strategies form the basis for applying evidence-based approaches that take the child’s health status, family system, community context, and resources for treatment into consideration to create the best evidence-based treatment plan for each individual child. Obesity is a complex chronic disease but societal stigma around obesity results in pervasive weight bias. This makes compassionate and sensitive communication with patients and families even more imperative (see the Communication of BMI and Weight Status to Children and Parents section).

It is important to recognize that treatment of obesity is integral to the treatment of its comorbidities and overweight or obesity and comorbidities should be treated concurrently (KAS 4). It is also important to consider that a child with overweight and obesity and their family require longitudinal and coordinated care in a medical home (KAS 9) (see algorithm in Appendix 1).

Measuring BMI and assessing weight classification (KAS 1) is a screening step that is applied to a practice population of children, which allows the pediatrician and other PHCP’s to initiate obesity evaluation. This evaluation is guided by a comprehensive history, physical examination, and diagnostic studies, including those for SDoHs, disordered eating, and mental and behavioral health (KAS 2). Overall guidance for evaluation of comorbidities is that in children 10 years and older, pediatricians and other PHCPs should evaluate for lipid abnormalities, abnormal glucose metabolism, and abnormal liver function in children and adolescents with obesity (BMI ≥ 95th percentile) and for lipid abnormalities in children and adolescents with overweight (BMI 85th to <95th percentile).

For younger children or children who are overweight, the recommendations are more conservative. In KAS 3.1, for children 10 years and older with overweight (BMI 85th to <95th percentile), pediatricians and other PHCPs may evaluate for abnormal glucose metabolism and liver function in the presence of risk factors for T2DM or NAFLD. In children 2 through 9 years of age with obesity (BMI ≥ 95th percentile), pediatricians and other PHCPs may evaluate for lipid abnormalities. In addition to laboratory evaluation, pediatricians and other PHCPs should evaluate for hypertension by measuring blood pressure at every visit starting at 3 years of age in children and adolescents with overweight and obesity (KAS 8). More specific guidance for further evaluation for each comorbidity is included in the Appendices, along with discussion of other obesity-related comorbidities.

The purpose of the evaluation is to determine the child’s individual health status, including the presence and extent of obesity related comorbidities, obesity risk factors present in the child’s history and environment, and the resources available to the family to conduct obesity treatment. Most importantly, comorbidities must be addressed concurrently with treatment of obesity (KAS 4).

MI is a collaborative approach to conversation about change that is a core component of delivering of COT, including engaging patients and families in addressing overweight and obesity (KAS 10), setting goals, and promoting participation in available resources and programs.

Providing or referring to intensive IHBLT, as described in KAS 11, is a foundational aspect of COT. Pediatricians and other PHCPs should provide or refer children 6 years and older and may provide or refer children 2 through 5 years with overweight and obesity to IHBLT. IHBLT is more effective with greater contact hours; the most effective programs include 26 or more hours of face-to-face, family-based, multicomponent treatment over a 2- to 12-month period. IHBLT provides ongoing behavioral and lifestyle support to the child and family and treatment of obesity-related comorbidities.

Delivering IHBLT requires being able to address nutrition and activity in a holistic manner, using a family-centered and nonstigmatizing approach that acknowledges structural and contextual drivers of obesity and follows the principles of the chronic care model and medical home, in the same manner as other special health care needs (KAS 9). IHBLT should be delivered by primary care providers and their teams, in collaboration with pediatric obesity specialists, allied health providers, and community partners. If IHBLT is not available, the pediatrician or other PHCP should deliver the highest-intensity HBLT possible. In addition, the pediatrician or other PHCP serves as a medical home for the patient, coordinating care, advocating for the patient and family, and supporting transition to adult care.

Concurrent treatment of obesity and obesity-related comorbidities is crucial as is the provision of weight loss pharmacologic treatment and metabolic and bariatric surgery to patients according to indications, risks, and benefits of these modalities. Weight loss pharmacotherapy and metabolic bariatric surgery are evidence-based obesity treatment modalities that should be available and offered to patients when indicated and should always occur along with IHBLT. Pediatricians and other PHCPs should offer adolescents 12 years and older with obesity weight loss pharmacotherapy, according to medication indications, risks, and benefits, as an adjunct to IHBLT (KAS 12). Pediatricians and other PHCPs should offer referral for adolescents 13 and older with severe obesity for evaluation for metabolic and bariatric surgery to local or regional comprehensive multidisciplinary pediatric metabolic and bariatric surgery centers (KAS 13; see Table 22).

TABLE 22

Role of the Pediatrician or PCHP

The Continuum of Obesity Care and the Role of PCP or PHCP
Focus Role of the Pediatrician or PHCP
Diagnosis and measurement ✓Measure height and weight 
✓Calculate BMI and assess BMI Percentile 
✓Communicate BMI and weight status to patient and family 
Risk factors ✓Assess individual, structural, and contextual risk factors 
Evaluation ✓Perform comprehensive patient history 
✓Conduct physical exam 
✓Evaluate for comorbidities0 
✓Order relevant diagnostic studies and laboratories 
✓Assess readiness to change 
Treat comorbidities ✓Treat obesity and comorbidities concurrently 
Treat obesity ✓Manage children with overweight & obesity following principles of chronic care model and medical home 
✓Deliver nonstigmatizing care 
✓Use MI to engage patient and families in addressing overweight and obesity, set goals and promote participation or utilization of local resources or programs 
✓Promptly engage and refer children to intensive HBL T treatment, if available. If intensive HBL T treatment is not available in your area, deliver highest intensity HBL T treatment possible. 
✓Foster self-management strategies 
✓Refer to subspecialists if needed 
✓Serve as medical home, coordinate care, advocate for family, and support transition to adult care. 
✓Offer weight loss pharmacotherapy, to eligible patients, according to medication indications, risks, and benefits, as an adjunct to HBL T. 
✓For eligible patients with severe obesity, offer referral to a local or regional comprehensive multidisciplinary pediatric metabolic and bariatric surgery center for surgical evaluation. 
The Continuum of Obesity Care and the Role of PCP or PHCP
Focus Role of the Pediatrician or PHCP
Diagnosis and measurement ✓Measure height and weight 
✓Calculate BMI and assess BMI Percentile 
✓Communicate BMI and weight status to patient and family 
Risk factors ✓Assess individual, structural, and contextual risk factors 
Evaluation ✓Perform comprehensive patient history 
✓Conduct physical exam 
✓Evaluate for comorbidities0 
✓Order relevant diagnostic studies and laboratories 
✓Assess readiness to change 
Treat comorbidities ✓Treat obesity and comorbidities concurrently 
Treat obesity ✓Manage children with overweight & obesity following principles of chronic care model and medical home 
✓Deliver nonstigmatizing care 
✓Use MI to engage patient and families in addressing overweight and obesity, set goals and promote participation or utilization of local resources or programs 
✓Promptly engage and refer children to intensive HBL T treatment, if available. If intensive HBL T treatment is not available in your area, deliver highest intensity HBL T treatment possible. 
✓Foster self-management strategies 
✓Refer to subspecialists if needed 
✓Serve as medical home, coordinate care, advocate for family, and support transition to adult care. 
✓Offer weight loss pharmacotherapy, to eligible patients, according to medication indications, risks, and benefits, as an adjunct to HBL T. 
✓For eligible patients with severe obesity, offer referral to a local or regional comprehensive multidisciplinary pediatric metabolic and bariatric surgery center for surgical evaluation. 

This CPG uses “evaluation” to describe patient assessment, and “test” to describe specific tests conducted as part of the evaluation.

Pediatricians and other PHCPs play a crucial role in providing COT as primary treatment providers, in coordinating care with subspecialists and in the community, and in advocating for obesity treatment resources and elimination of weight bias and stigma. Because obesity is a chronic disease with exacerbations and remissions, children and adolescents with obesity need appropriate reassessments of medical and psychological risks and comorbidities with appropriate modifications to their treatment plan. COT also requires ongoing evaluation and capacity building of both practice and community resources that can aid the family in addressing SDoHs as needed.

Obesity in children and adolescents is a complex, multifactorial, and treatable disease. Evidence for successful treatment, despite stated gaps and complexities, gives hope to patients and families that pediatricians and PHCPs can successfully assess and address the disease of obesity with an individualized and compassionate approach. In contrast to earlier practices of watchful waiting or following a staged approach to intensifying treatment, this CPG supports early treatment at the highest level of intensity appropriate for and available to the child. It is hoped that pediatricians and other PHCPs, health systems, community partners, payers, and policy makers will recognize the significance and urgency outlined by this CPG to advance the equitable and universal provision of treatment of the chronic disease of obesity in children and adolescents.

KAS 1. Pediatricians and other PHCPs should measure height and wt, calculate BMI, and assess BMI percentile using age- and sex-specific CDC growth charts or growth charts for children with severe obesity at least annually for all children 2 to 18 y of age to screen for overweight (BMI ≥ 85th percentile to <95th percentile), obesity (BMI ≥ 95th percentile), and severe obesity (BMI ≥ 120% of the 95th percentile for age and sex).

Aggregate Evidence Quality Grade B
Benefits Easy to use; reproducible; improved identification of severe obesity; and improved ability to monitor improvements in weight status of youth with severe obesity. 
Risks, harms, costs Screening tool with both false negatives and false positives; may misclassify some populations; development, implementation, and use of separate growth charts for severe obesity requires identification of severe obesity (electronic health record decision prompts can support this); use of severe obesity growth charts may confer stigma associated with obesity; interpretation and explanation for families may be challenging. 
Benefit-harm assessment Benefit outweighs harm. 
Intentional vagueness Growth charts based on reference populations; need to screen or assess adiposity for children among specific populations (eg, CYSHCN); provider education on use and interpretation of charts; training requirements. 
Role of patient preference Patient and family inclusion and discussion is critical to shared decision-making. 
Exclusions >21 y 
Strength Moderate 
Key references 79, 123130  
Aggregate Evidence Quality Grade B
Benefits Easy to use; reproducible; improved identification of severe obesity; and improved ability to monitor improvements in weight status of youth with severe obesity. 
Risks, harms, costs Screening tool with both false negatives and false positives; may misclassify some populations; development, implementation, and use of separate growth charts for severe obesity requires identification of severe obesity (electronic health record decision prompts can support this); use of severe obesity growth charts may confer stigma associated with obesity; interpretation and explanation for families may be challenging. 
Benefit-harm assessment Benefit outweighs harm. 
Intentional vagueness Growth charts based on reference populations; need to screen or assess adiposity for children among specific populations (eg, CYSHCN); provider education on use and interpretation of charts; training requirements. 
Role of patient preference Patient and family inclusion and discussion is critical to shared decision-making. 
Exclusions >21 y 
Strength Moderate 
Key references 79, 123130  

KAS 3.1 In children 10 y and older with overweight (BMI ≥ 85th percentile to <95th percentile), pediatricians and other PHCPs may evaluate for abnormal glucose metabolism and liver function in the presence of risk factors for T2DM or NAFLD. In children 2 to 9 y of age with obesity (BMI ≥ 95th percentile), pediatricians and other PHCPs may evaluate for lipid abnormalities.

Aggregate Evidence Quality Grade C.
Benefits Limit evaluation to populations with increased risk. Allows for early detection and management to reduce risk factors for future cardiometabolic disease. Result will guide treatment. 
Risks, harm, costs Cost, access, patient anxiety, labeling with chronic medical condition, stress, and time of undergoing treatment. 
Benefit-harm assessment Identification and management of cardiometabolic comorbidities in childhood and adolescence may exceed potential harm, especially children at increased risk. 
Intentional vagueness Age. Need for testing may vary by condition and individual presentation. 
Role of patient preferences Parent and patient knowledge, family history, families’ concern about the test, ease and accessibility of testing should be considered. 
Exclusions <24 mo old. 
Strengths Moderate. 
Key references 80, 86, 88, 90, 358,396, 397, 413415, 420  
Aggregate Evidence Quality Grade C.
Benefits Limit evaluation to populations with increased risk. Allows for early detection and management to reduce risk factors for future cardiometabolic disease. Result will guide treatment. 
Risks, harm, costs Cost, access, patient anxiety, labeling with chronic medical condition, stress, and time of undergoing treatment. 
Benefit-harm assessment Identification and management of cardiometabolic comorbidities in childhood and adolescence may exceed potential harm, especially children at increased risk. 
Intentional vagueness Age. Need for testing may vary by condition and individual presentation. 
Role of patient preferences Parent and patient knowledge, family history, families’ concern about the test, ease and accessibility of testing should be considered. 
Exclusions <24 mo old. 
Strengths Moderate. 
Key references 80, 86, 88, 90, 358,396, 397, 413415, 420  

KAS 4. Pediatricians and other PHCPs should treat children and adolescents for overweight (BMI ≥ 85th percentile to <95th percentile) or obesity (BMI ≥ 95th percentile) and comorbidities concurrently.

Aggregate Evidence Quality Grade A
Benefits Awareness of relationship between comorbidities and weight status, treating weight improves comorbidities. Improved continuity of care and outcomes. Provides an opportunity to discuss health. 
Risks, harms, costs Anxiety about weight or comorbidities, time needed for education counseling, potential for disordered eating. Health care costs. 
Benefit-harm assessment Benefits exceed potential harm. 
Intentional vagueness Pediatricians and other PHCPs may not have access to appropriate subspecialists. 
Role of patient preference Increased visit time, patient or parent experience with prior weight-related counseling. 
Exclusions <24 mo. 
Strength Strong. 
Key references 80, 8688, 90, 396, 410, 414, 415, 419, 420, 433437  
Aggregate Evidence Quality Grade A
Benefits Awareness of relationship between comorbidities and weight status, treating weight improves comorbidities. Improved continuity of care and outcomes. Provides an opportunity to discuss health. 
Risks, harms, costs Anxiety about weight or comorbidities, time needed for education counseling, potential for disordered eating. Health care costs. 
Benefit-harm assessment Benefits exceed potential harm. 
Intentional vagueness Pediatricians and other PHCPs may not have access to appropriate subspecialists. 
Role of patient preference Increased visit time, patient or parent experience with prior weight-related counseling. 
Exclusions <24 mo. 
Strength Strong. 
Key references 80, 8688, 90, 396, 410, 414, 415, 419, 420, 433437  

KAS 5. Pediatricians and other PHCPs should evaluate for dyslipidemia by obtaining a fasting lipid panel in children 10 y and older with overweight (BMI ≥ 85th percentile to <95th percentile) and obesity (BMI ≥ 95th percentile) and may evaluate for dyslipidemia in children 2 through 9 y of age with obesity.

Aggregate Evidence Quality Grade B: Children ≥10 y of Age With Obesity. Grade C: Children 2 Through 9 y of Age
Benefits Allows for identification and management of specific cardiovascular risk factors, fasting status limits number of blood draws. May motivate treatment engagement. 
Risks, harms, costs Convenience, cost, access, patient anxiety, labeling with chronic medical condition, stress and time of undergoing treatment. 
Benefit-harm assessment Identification and management of specific cardiometabolic comorbidities in childhood and adolescence exceeds potential harm of no evaluation, especially for high-risk patients. When obtaining a fasting lipid panel is not possible, the pediatrician or other PHCP may assess the benefit of evaluating for dyslipidemia with a nonfasting lipid panel in certain circumstances. 
Intentional vagueness None. 
Role of patient preference Ease and accessibility of testing; families concern about the test. 
Exclusions ≤24 mo old. 
Strength Strong (10 y and older). Moderate (2–9 y). 
Key references 80, 86, 395, 396, 410, 411, 417, 453, 454  
Aggregate Evidence Quality Grade B: Children ≥10 y of Age With Obesity. Grade C: Children 2 Through 9 y of Age
Benefits Allows for identification and management of specific cardiovascular risk factors, fasting status limits number of blood draws. May motivate treatment engagement. 
Risks, harms, costs Convenience, cost, access, patient anxiety, labeling with chronic medical condition, stress and time of undergoing treatment. 
Benefit-harm assessment Identification and management of specific cardiometabolic comorbidities in childhood and adolescence exceeds potential harm of no evaluation, especially for high-risk patients. When obtaining a fasting lipid panel is not possible, the pediatrician or other PHCP may assess the benefit of evaluating for dyslipidemia with a nonfasting lipid panel in certain circumstances. 
Intentional vagueness None. 
Role of patient preference Ease and accessibility of testing; families concern about the test. 
Exclusions ≤24 mo old. 
Strength Strong (10 y and older). Moderate (2–9 y). 
Key references 80, 86, 395, 396, 410, 411, 417, 453, 454  

KAS 6. Pediatricians and other PHCPs should evaluate for prediabetes and/or diabetes mellitus with fasting plasma glucose, 2-h plasma glucose after 75-g oral glucose tolerance test (OGTT), or glycosylated hemoglobin (HbA1c).a

Aggregate Evidence Quality Grade B.
Benefits Tests sensitive for glucose intolerance have established diagnostic cut-offs. 
Risks, harms, costs Cost, access, time, patient anxiety with testing, varying levels of sensitivity and specificity, concordance between tests is imperfect, HbA1c levels can vary by age, ethnicity, anemia or hemoglobinopathies. 
Benefit-harm assessment Benefit outweighs harm. 
Intentional vagueness Consideration for patient access and timing of tests. 
Role of patient preference Families’ concern about developing T2DM, concerns about the test, ease and accessibility for testing, length of time for OGTT. 
Exclusions Fasting insulin test is not reliable measure of insulin resistance. 
Strength Moderate. 
Key references 90, 414416, 464  
Aggregate Evidence Quality Grade B.
Benefits Tests sensitive for glucose intolerance have established diagnostic cut-offs. 
Risks, harms, costs Cost, access, time, patient anxiety with testing, varying levels of sensitivity and specificity, concordance between tests is imperfect, HbA1c levels can vary by age, ethnicity, anemia or hemoglobinopathies. 
Benefit-harm assessment Benefit outweighs harm. 
Intentional vagueness Consideration for patient access and timing of tests. 
Role of patient preference Families’ concern about developing T2DM, concerns about the test, ease and accessibility for testing, length of time for OGTT. 
Exclusions Fasting insulin test is not reliable measure of insulin resistance. 
Strength Moderate. 
Key references 90, 414416, 464  
a

Per KAS 3 and 3.1: pediatricians and other PHCPs should evaluate children 10 y and older with obesity (BMI ≥ 95th percentile) for abnormal glucose metabolism and may evaluate children 10 y and older with overweight (BMI ≥ 85th percentile to <95th percentile) with risk factors for T2DM or NAFLD for abnormal glucose metabolism. (Refer to evidence tables for KAS 3 and 3.1.)

KAS 7. Pediatricians and other PHCPs should evaluate for NAFLD by obtaining an alanine transaminase (ALT) test.a

Aggregate Evidence Quality Grade A.
Benefits Minimally invasive, fair correlation to histology. 
Risks, harms, costs Test may not correlate with disease severity. 
Benefit-harm assessment Benefit outweighs harm. 
Intentional vagueness Future research needed. 
Role of patient preference None. 
Exclusions Not applicable. 
Strength Strong. 
Key references 88, 396, 481  
Aggregate Evidence Quality Grade A.
Benefits Minimally invasive, fair correlation to histology. 
Risks, harms, costs Test may not correlate with disease severity. 
Benefit-harm assessment Benefit outweighs harm. 
Intentional vagueness Future research needed. 
Role of patient preference None. 
Exclusions Not applicable. 
Strength Strong. 
Key references 88, 396, 481  
a

Per KAS 3 and 3.1: Pediatricians and other PHCPs should evaluate children 10 y and older with obesity (BMI ≥ 95th percentile) for abnormal liver function and may evaluate children 10 y and older with overweight (BMI ≥ 85th percentile to <95th percentile) with risk factors for TD2M or NAFLD for abnormal liver function. (Refer to evidence tables for KAS 3 and 3.1.)

KAS 8. Pediatricians and other PHCPs should evaluate for hypertension by measuring blood pressure at every visit starting at 3 y of age in children and adolescents with overweight (BMI ≥ 85 to <95th percentile) and obesity (BMI ≥ 95th percentile).

Aggregate Evidence Quality Grade C
Benefits Early detection of HTN, opportunity to address weight’s impact on BP and health, prevention of HTN-related morbidity. 
Risks, harms, costs Improper measurement techniques, misclassification, discomfort, time needed, possible inaccuracy during acute care visits when patient may be in pain. 
Benefit-harm assessment Benefits exceed potential harm. 
Intentional vagueness None. 
Role of patient preference Increased visit time, discomfort with cuff. 
Exclusions <3 y of age. 
Strength Moderate. 
Key references 87, 396, 413, 453, 488  
Aggregate Evidence Quality Grade C
Benefits Early detection of HTN, opportunity to address weight’s impact on BP and health, prevention of HTN-related morbidity. 
Risks, harms, costs Improper measurement techniques, misclassification, discomfort, time needed, possible inaccuracy during acute care visits when patient may be in pain. 
Benefit-harm assessment Benefits exceed potential harm. 
Intentional vagueness None. 
Role of patient preference Increased visit time, discomfort with cuff. 
Exclusions <3 y of age. 
Strength Moderate. 
Key references 87, 396, 413, 453, 488  

KAS 9. Pediatricians and other PHCPs should treat overweight (BMI ≥ 85th percentile to <95th percentile) and obesity (BMI ≥ 95th percentile) in children and adolescents, following the principles of the medical home and the chronic care model, using a family-centered and nonstigmatizing approach that acknowledges obesity’s biologic, social, and structural drivers.

Aggregate Evidence Quality Grade B
Benefits Early intervention, reduction of comorbidities, long-term health care cost savings, efficiency with coordinated care. 
Risks, harms, costs Time, resources, and cost to family, provider, and clinical practice. Stigma felt by patient and parent. 
Benefit-harm assessment Benefits outweigh the harms. 
Intentional vagueness Frequency of monitoring and duration of longitudinal care not solidified by scientific literature. 
Role of patient preference Family and patient’s willingness to discuss weight, attend weight-related visits, undergo obesity-related clinical and laboratory evaluation. 
Exclusions None. 
Strength Strong. 
Key references 521  
Aggregate Evidence Quality Grade B
Benefits Early intervention, reduction of comorbidities, long-term health care cost savings, efficiency with coordinated care. 
Risks, harms, costs Time, resources, and cost to family, provider, and clinical practice. Stigma felt by patient and parent. 
Benefit-harm assessment Benefits outweigh the harms. 
Intentional vagueness Frequency of monitoring and duration of longitudinal care not solidified by scientific literature. 
Role of patient preference Family and patient’s willingness to discuss weight, attend weight-related visits, undergo obesity-related clinical and laboratory evaluation. 
Exclusions None. 
Strength Strong. 
Key references 521  

KAS 10. Pediatricians and other PHCPs should use motivational interviewing (MI) to engage patients and families in treating overweight (BMI ≥ 85th percentile to <95th percentile) and obesity (BMI ≥ 95th percentile).

Aggregate Evidence Quality Grade B
Benefits Improvement in BMI, including in low-intensity interventions. 
Risks, harms, costs Minimal. Use of MI can add some time to the standard visit. 
Benefit-harm assessment Benefit outweighs risk. 
Intentional vagueness None. 
Role of patient preference Patient preference is central. 
Exclusions Patients who are not responsible for their behavior change, such as children who are young or with developmental or cognitive impairment. In these situations, MI should target the parent or other caregiver. 
Strength Moderate. 
Key references 525  
Aggregate Evidence Quality Grade B
Benefits Improvement in BMI, including in low-intensity interventions. 
Risks, harms, costs Minimal. Use of MI can add some time to the standard visit. 
Benefit-harm assessment Benefit outweighs risk. 
Intentional vagueness None. 
Role of patient preference Patient preference is central. 
Exclusions Patients who are not responsible for their behavior change, such as children who are young or with developmental or cognitive impairment. In these situations, MI should target the parent or other caregiver. 
Strength Moderate. 
Key references 525  

KAS 11. Pediatricians and other PHCPs should provide or refer children 6 y and older (Grade B) and may provide or refer children 2 through 5 y of age (Grade C) with overweight (BMI ≥ 85th percentile to <95th percentile) and obesity (BMI ≥ 95th percentile) to intensive health behavior and lifestyle treatment. Health behavior and lifestyle treatment is more effective with greater contact hours; the most effective treatment includes 26 or more hours of face-to-face, family-based, multicomponent treatment over a 3- to 12-mo period.

Aggregate Evidence Quality Grade B: Children ≥6 y of Age. Grade C: Children 2 Through 5 y of Age.
Benefits BMI reduction, quality of life improvement, comorbidity improvement or resolution is associated with 26 or more hours of face-to-face, family-based, multicomponent treatment over 3 to 12 mo. 
Risks, harms, costs Minimal risk or harm. Participation is time-intensive and requires repeated visits. Treatment is costly to administer and inconsistently paid. 
Benefit-harm assessment Benefit outweighs risk. 
Intentional vagueness Impact is inconsistent in studies with significant heterogeneity of treatment response. Increasing dose of treatment is associated with more BMI improvement. 
Role of patient preference Patient preference is central. 
Exclusions Patients not responsible for their behavior change, such as children who are young or with developmental or cognitive impairment. 
Strength Moderate. 
Key references 625  
Aggregate Evidence Quality Grade B: Children ≥6 y of Age. Grade C: Children 2 Through 5 y of Age.
Benefits BMI reduction, quality of life improvement, comorbidity improvement or resolution is associated with 26 or more hours of face-to-face, family-based, multicomponent treatment over 3 to 12 mo. 
Risks, harms, costs Minimal risk or harm. Participation is time-intensive and requires repeated visits. Treatment is costly to administer and inconsistently paid. 
Benefit-harm assessment Benefit outweighs risk. 
Intentional vagueness Impact is inconsistent in studies with significant heterogeneity of treatment response. Increasing dose of treatment is associated with more BMI improvement. 
Role of patient preference Patient preference is central. 
Exclusions Patients not responsible for their behavior change, such as children who are young or with developmental or cognitive impairment. 
Strength Moderate. 
Key references 625  

KAS 12. Pediatricians and other PHCPs should offer adolescents 12 y and older with obesity (BMI ≥ 95th percentile) weight loss pharmacotherapy, according to medication indications, risks, and benefits, as an adjunct to health behavior and lifestyle treatment.

Aggregate Evidence Quality Grade B
Benefits BMI reduction as an adjunct to lifestyle treatment. 
Risks, harms, costs Varies by pharmacotherapeutic agent. 
Benefit-harm assessment Benefit and harm are individualized by patient, must weigh the side effects and potential benefit of the medication and patient-specific factors. 
Intentional vagueness None. 
Role of patient preference Significant; must determine appropriate timing and duration of treatment, monitor for side effects. 
Exclusions Medication-dependent exclusions. 
Strengths Moderate. 
Key references 710  
Aggregate Evidence Quality Grade B
Benefits BMI reduction as an adjunct to lifestyle treatment. 
Risks, harms, costs Varies by pharmacotherapeutic agent. 
Benefit-harm assessment Benefit and harm are individualized by patient, must weigh the side effects and potential benefit of the medication and patient-specific factors. 
Intentional vagueness None. 
Role of patient preference Significant; must determine appropriate timing and duration of treatment, monitor for side effects. 
Exclusions Medication-dependent exclusions. 
Strengths Moderate. 
Key references 710  

KAS 13. Pediatricians and other PHCPs should offer referral for adolescents 13 y and older with severe obesity (BMI ≥ 120% of the 95th percentile for age and sex) for evaluation for metabolic and bariatric surgery to local or regional comprehensive multidisciplinary pediatric metabolic and bariatric surgery centers.

Aggregate Evidence Quality Grade Ca
Benefits Referral for evaluation to a comprehensive pediatric metabolic and bariatric surgery center may result in the determination of eligibility for laparoscopic Roux-en-Y gastric bypass or vertical sleeve gastrectomy, which are both associated with significant and sustained weight loss, accompanied by improvements and/or resolution of numerous related comorbid conditions, remission of certain cardiometabolic risk factors, and improvements in weight-related quality of life. 
Risks, harms, costs Minor perioperative risks may occur in up to 15% of patients, and major perioperative risks may occur in up to 8% of patients. Subsequent related procedures may be required in 13% to 25% of patients up to 5 y following surgery. Vitamin deficiencies are common and need long-term monitoring and potential intervention. Health care costs and costs to families (eg, time, recovery). 
Benefit-harm assessment Perioperative risks considered within acceptable tolerances compared with other elective surgical abdominal procedures. Benefit and harm are patient-specific with generally accepted safety profiles within the context of perceived long-term post-procedural benefits (ie, reduction in comorbid disease burden), resulting in improved health status and quality of life. 
Intentional vagueness This action statement does not recommend surgery for all who have severe obesity but rather the opportunity for children, adolescents, and families to consider and undergo evaluation. 
Role of patient preference Significant; must determine appropriate timing of intervention and comprehension of treatment plan. 
Exclusions Not applicable. 
Strength Moderate. 
Key references 126, 654, 732738  
Aggregate Evidence Quality Grade Ca
Benefits Referral for evaluation to a comprehensive pediatric metabolic and bariatric surgery center may result in the determination of eligibility for laparoscopic Roux-en-Y gastric bypass or vertical sleeve gastrectomy, which are both associated with significant and sustained weight loss, accompanied by improvements and/or resolution of numerous related comorbid conditions, remission of certain cardiometabolic risk factors, and improvements in weight-related quality of life. 
Risks, harms, costs Minor perioperative risks may occur in up to 15% of patients, and major perioperative risks may occur in up to 8% of patients. Subsequent related procedures may be required in 13% to 25% of patients up to 5 y following surgery. Vitamin deficiencies are common and need long-term monitoring and potential intervention. Health care costs and costs to families (eg, time, recovery). 
Benefit-harm assessment Perioperative risks considered within acceptable tolerances compared with other elective surgical abdominal procedures. Benefit and harm are patient-specific with generally accepted safety profiles within the context of perceived long-term post-procedural benefits (ie, reduction in comorbid disease burden), resulting in improved health status and quality of life. 
Intentional vagueness This action statement does not recommend surgery for all who have severe obesity but rather the opportunity for children, adolescents, and families to consider and undergo evaluation. 
Role of patient preference Significant; must determine appropriate timing of intervention and comprehension of treatment plan. 
Exclusions Not applicable. 
Strength Moderate. 
Key references 126, 654, 732738  
a

This KAS was given a Grade C recommendation, as available evidence is from observational and case-controlled studies. As described in the methods section for the evidence review, only randomized and comparative effectiveness studies were included for the CPG. The Evidence Review Panel made the decision to include observational and case-control studies specifically for surgical interventions only, because of ethical considerations and practical challenges to randomization.

Subcommittee on Obesity

Sarah E. Hampl, MD, FAAP Sandra G. Hassink, MD, FAAP Asheley C. Skinner, PhD Sarah C. Armstrong, MD, FAAP Sarah E. Barlow, MD, MPH, FAAP Brook Belay, MD Christopher F. Bolling, MD, FAAP Kimberly C. Avila Edwards, MD, FAAP Ihuoma Eneli, MD, MS, FAAP Alyson B. Goodman, MD, MPH, FAAP Robin Hamre, MPH Madeline M. Joseph, MD, FAAP Doug Lunsford, MEd Eneida Mendonca, MD, PhD, FAAP Marc P. Michalsky, MD, MBA, FAAP Nazrat Mirza, MD, ScD, FAAP Eduardo R. Ochoa, Jr, MD, FAAP Mona Sharifi, MD, MPH, FAAP Amanda E. Staiano, PhD, MPP Ashley E. Weedn, MD, MPH, FAAP Susan K. Flinn, MA Jeanne Lindros, MPH Kymika Okechukwu, MPA

Acknowledgments

We thank Pia Daniels, MPH, PMP, Program Manager, Evidence-Based Medicine Initiatives and Jeremiah Salmon, MPH, Manager, Clinical Initiatives, Institute for Healthy Childhood Weight.

This document is copyrighted and is property of the American Academy of Pediatrics and its Board of Directors. All authors have filed conflict of interest statements with the American Academy of Pediatrics. Any conflicts have been resolved through a process approved by the Board of Directors. The American Academy of Pediatrics has neither solicited nor accepted any commercial involvement in the development of the content of this publication.

The guidance in this report does not indicate an exclusive course of treatment or serve as a standard of medical care. Variations, taking into account individual circumstances, may be appropriate.

All clinical practice guidelines from the American Academy of Pediatrics automatically expire 5 years after publication unless reaffirmed, revised, or retired at or before that time.

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Competing Interests

FINANCIAL/CONFLICT OF INTEREST DISCLOSURES: An Independent review for bias was completed by the American Academy of Pediatrics. Dr Barlow has disclosed a financial relationship with the Eunice Kennedy Shriver National Institute of Child Health and Human Development as a co-investigator.

Copyright © 2023 by the American Academy of Pediatrics

2023

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