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Practice Guideline
. 2025 Apr 13;197(14):E372-E389.
doi: 10.1503/cmaj.241456.

Managing obesity in children: a clinical practice guideline

Affiliations
Practice Guideline

Managing obesity in children: a clinical practice guideline

Geoff D C Ball et al. CMAJ. .

Erratum in

Abstract

Background: Obesity is a complex, chronic, stigmatized disease whereby abnormal or excess body fat may impair health or increase the risk of medical complications, and can reduce quality of life and shorten lifespan in children and families. We developed this guideline to provide evidence-based recommendations on options for managing pediatric obesity that support shared decision-making among children living with obesity, their families, and their health care providers.

Methods: We followed the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. We used the Guidelines International Network principles to manage competing interests. Caregivers, health care providers, and people living with obesity participated throughout the guideline development process, which optimized relevance. We surveyed end users (caregivers, health care providers) to prioritize health outcomes, completed 3 scoping reviews (2 on minimal important difference estimates; 1 on clinical assessment), performed 1 systematic review to characterize families' values and preferences, and conducted 3 systematic reviews and meta-analyses to examine the benefits and harms of behavioural and psychological, pharmacologic, and surgical interventions for managing obesity in children. Guideline panellists developed recommendations focused on an individualized approach to care by using the GRADE evidence-to-decision framework, incorporating values and preferences of children living with obesity and their caregivers.

Recommendations: Our guideline includes 10 recommendations and 9 good practice statements for managing obesity in children. Managing pediatric obesity should be guided by a comprehensive child and family assessment based on our good practice statements. Behavioural and psychological interventions, particularly multicomponent interventions (strong recommendation, very low to moderate certainty), should form the foundation of care, with tailored therapy and support using shared decision-making based on the potential benefits, harms, certainty of evidence, and values and preferences of children and families. Pharmacologic and surgical interventions should be considered (conditional recommendation, low to moderate certainty) as therapeutic options based on availability, feasibility, and acceptability, and guided by shared decision-making between health care providers and families.

Interpretation: This guideline will support children, families, and health care providers to have informed discussions about the balance of benefits and harms for available obesity management interventions to support value- and preference-sensitive decision-making.

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Conflict of interest statement

Competing interests:: Geoff Ball reports serving as the Alberta Health Services Chair in Obesity Research. Funds from the chair helped to support the research activities that informed this guideline. Outside the submitted work, Dr. Ball also reports receiving grant funding from the Canadian Institutes of Health Research (CIHR) and the Women and Children’s Health Research Institute; consulting fees as a member of the national consultation board for Novo Nordisk Canada; and support for travel and accommodation from Obesity Canada. Dr. Ball has also served in unpaid leadership roles (co-chair) on the Steering Committee and Guideline Panel to update Canada’s Clinical Practice Guideline for Managing Pediatric Obesity. Catherine Birken reports receiving grants from CIHR; Heart & Stroke Foundation of Canada; Physician Services Inc.; the Edwin S.H. Leong Centre for Healthy Children, University of Toronto and Hospital for Sick Children; Centre for Addiction and Mental Health; Joannah & Brian Lawson Centre for Child Nutrition, University of Toronto; and a Walmart Canada Regional Community Grant. Stasia Hadjiyannakis reports receiving honoraria for lectures from Rhythm Pharmaceuticals and Obesity Canada, payment for online course development from Obesity Canada, support to attend the National Obesity Summit from Obesity Canada, and payment for attending a Rhythm Pharmaceuticals advisory board meeting. Jill Hamilton reports receiving grants for industry-sponsored study sites from Rhythm Pharmaceuticals, Eli Lilly, and Novo Nordisk, and unrestricted research funds from Mead Johnson and Sun Life Financial (for an education program). Dr. Hamilton has also participated as a consultant on the Novo Nordisk Pediatric Expert Obesity National Advisory Board, and in the Rhythm Pharmaceuticals national advisory board meeting on the management of rare forms of obesity. Aislin Mushquash reports receiving grants from CIHR, the Brain Canada Foundation, and the Social Sciences and Humanities Research Council of Canada (SSHRC). Nicole Pearce owns the Global Obesity Learning Centre and is an employee of Obesity Canada. Tracy Rhyason Lebel reports receiving travel support to and honoraria for speaking at the National Clinical Obesity Update 2025 from Obesity Canada. Julie St. Pierre reports receiving grants and honoraria from Eli Lilly and Novo Nordisk Canada, and has participated on advisory boards for Novo Nordisk Global and Eli Lilly. Angela Alberga reports receiving a salary award from Les Fonds de Recherche du Québec (Chercheur Boursier Junior 1 & 2) and the University Research Chair from Concordia University, in support of the present manuscript. Outside the submitted work, Dr. Alberga reports receiving research grants from SSHRC, CIHR, and TD Bank; honoraria from the Canadian Collaborative Research Network; and travel support from Obesity Canada. Dr. Alberga has also served on the Obesity Canada Scientific Advisory Board and Bias 180 Board of Directors (both unpaid). Soren Harnois-Leblanc reports receiving fellowships from Obesity Canada and the American Diabetes Association and the Thomas O. Pyle Fellowship Award (all paid to institution). Josephine Ho reports serving as the local site investigator for future multicentre studies with Eli Lilly study and Novo Nordisk. Marsha Kucera reports serving as board chair for Mosaic Primary Care Network, a not-for-profit corporation. Jacob Langer reports receiving honoraria for a webinar hosted by the World Journal of Pediatric Surgery and for participating as an external examiner for the University of West Indies Pediatric Surgery Board examinations. Dr. Langer has also received payment for expert testimony in several lawsuits. Mélanie Henderson reports serving as the president of the Scientific Committee on Obesity Prevention (Institut national de santé publique du Québec) and as a member of the consultation group on the management of obesity in children and adolescents and the Quebec Advisory Committee on Bariatric Medicine (Québec Health Ministry), both roles unpaid. Katherine Morrison reports receiving grants from Diabetes Canada and the CIHR and consulting fees for advisory board work from Novo Nordisk. Dr. Morrison has also partipated on a data safety monitoring board for Novartis. Ian Patton reports receiving support from Johnson & Johnson to attend the HealtheVoices patient advocacy conference, and participating in patient advisory boards for Novo Nordisk, Eli Lilly, and Boehringer Ingelheim (unpaid) via Obesity Canada. Krista Oei reports receiving a Canadian Pediatric Endocrine Group fellowship grant (paid to institution) and SickKids Clinician Scientist Training Program Master’s Scholarship (paid to self). Ian Zenlea reports receiving payment from Novo Nordisk Canada for participating in an Advisory Board related to pharmaceutical management of childhood obesity. Dr. Zenlea has also participated in the Ontario Paediatric Bariatric Network Committee. Grace O’Malley reports receiving grants from the Health Research Board of Ireland, the European Association for the Study of Obesity (EASO), and the Department of Health Health Service Executive (all paid to institution); honoraria from Novo Nordisk for training on childhood obesity to general practitioners in Ireland; and reimbursement of travel and subsistence costs, in role as Secretary of EASO to attend conferences and congresses. Dr. O’Malley also reports serving as trustee and general secretary of EASO, and director and committee member of the Association for the Study of Obesity on the Island of Ireland. Bradley Johnston reports receiving a start-up grant from Texas A&M AgriLife Research to fund investigator-initiated research related to saturated and polyunsaturated fats, and National Institute of Diabetes and Digestive and Kidney Diseases R25 funds to support training resources in evidence-based nutrition practice, all outside the submitted work. Dr. Johnston has also received travel support from Obesity Canada, Alberta Health Services, EASO, and the University of Barcelona. Dr. Johnston serves as director of EvidenceBasedNutrition.org, a research and education program. Sarah Moore reports receiving a CIHR Planning and Dissemination Grant in support of knowledge translation for the current guideline. Outside the submitted work, Dr. Moore has received research funding or in-kind support from CIHR; the Department of Communities, Culture, Tourism and Heritage (Government of Nova Scotia); ParticipACTION; Outdoor Play Canada; Obesity Canada; Dalhousie University; and Women and Children’s Health Research Institute (University of Alberta). Dr. Moore also reports receiving an honorarium from PHE Canada to review its Guidebook, and partial reimbursement from Obesity Canada for travel to the Canadian Obesity Summit. Dr. Moore serves as a Project Lead for the MacEachen Institute for Public Policy and Governance and receives some administrative support, as well as funding for events, to support research assistants. Dawn Hatanaka is a former employee of Obesity Canada, which provided financial and in-kind support. Elizabeth Dettmer reports receiving funds from SunLife Foundation for development and sharing of a pediatric obesity group treatment program. No other competing interests were declared.

Figures

Figure 1:
Figure 1:
Summary of the guideline recommendations. See Related Content tab for accessible version.

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