Evidence-based recommendations for obesity management in adolescents (10–19 years) using a primary health care approach.
What this guideline saysGMJ summary
This WHO guideline provides comprehensive, evidence-based recommendations for the integrated management of obesity in adolescents aged 10–19 years. It adopts a primary health care approach centred on person-centred care, equity, and human rights, addressing adolescents ‘in all their diversity’.
The guideline covers dietary interventions, physical activity, behaviour change techniques, digital health tools, pharmacotherapy, bariatric surgery, and multimodal interventions. All recommendations emphasize structured, supervised programmes that consider age, gender, health status, cultural context, and the adolescent’s values and preferences, with active involvement of parents and/or caregivers.
Most recommendations are strong despite very low to low-quality evidence, reflecting the GDG’s consensus that the benefits of multimodal approaches outweigh harms. Pharmacotherapy and bariatric surgery receive conditional recommendations, reserved for adolescents with severe obesity or obesity-related complications after lifestyle interventions have failed, and only in specialized multidisciplinary settings with close monitoring.
Key pointsfor clinicians
- Structured dietary interventions tailored to age, gender, health status, food preferences, and cultural context (strong recommendation, very low-quality evidence).
- Physical activity plan with at least 60 minutes per day of moderate-to-vigorous intensity aerobic activity, with muscle and bone-strengthening activities at least three days per week (strong recommendation, very low-quality evidence).
- Behaviour changing interventions (e.g. cognitive behavioural therapy, motivational techniques, goal setting) individualized to the adolescent's needs (strong recommendation, very low-quality evidence).
- Multimodal interventions combining diet, physical activity, and behavioural components delivered by knowledgeable health workers with parental/caregiver involvement (strong recommendation, very low-quality evidence).
- Pharmacotherapy (e.g. metformin, GLP-1 receptor agonists such as semaglutide and liraglutide, orlistat) only for adolescents with obesity and complications after ≥6 months of multimodal lifestyle modification has failed, in specialized settings (conditional recommendation, low-quality evidence).
- Bariatric surgery only for adolescents with severe obesity (BMI-for-age >4 SD above WHO median, or >3 SD with complications) after ≥6 months of multimodal lifestyle modification has failed, with close evaluation of pubertal development, psychological stability, and long-term follow-up (conditional recommendation, low-quality evidence).
- Digital health interventions (e.g. apps, wearables, exergames) may be used as components of integrated management, with supervision and limiting recreational screen time to ≤2 hours per day (conditional recommendation, very low-quality evidence).
- All interventions require initial clinical assessment including anthropometry, medical/family history, psychosocial factors, and screening for eating disorder risk, coexisting conditions, and mental health issues.
Summary of recommendations by intervention typeextracted from the guideline
| Intervention | Recommendation strength | Quality of evidence | Key considerations |
|---|---|---|---|
| Dietary interventions | Strong | Very low | Structured, supervised; consider age, gender, preferences, cultural context; involve parents/caregivers |
| Physical activity | Strong | Very low | ≥60 min/day moderate-to-vigorous activity; muscle/bone strengthening ≥3 days/week |
| Behaviour changing interventions | Strong | Very low | Tailored to individual needs; may include CBT, motivational techniques, goal setting |
| Multimodal interventions | Strong | Very low | Combine diet, physical activity, behaviour components; family involvement |
| Digital health interventions | Conditional | Very low | Consider type, duration; limit screen time to ≤2 hours/day recreational use |
| Pharmacotherapy | Conditional | Low | Only after ≥6 months multimodal lifestyle modification fails; specialized setting; monitor closely |
| Bariatric surgery | Conditional (eligibility); Strong (setting) | Low | Only for severe obesity (BMI >4 SD or >3 SD with complications); specialized multidisciplinary care; assess pubertal status |
What changed in this edition
- First WHO guideline specifically focused on obesity management (versus prevention) in adolescents as a distinct age group (10–19 years).
- Separate from a parallel guideline for children, reflecting developmental differences in diagnosis, eligibility, values, and parental roles.
- Incorporates new evidence on GLP-1 receptor agonists (semaglutide, liraglutide, exenatide) and other emerging pharmacotherapy options.
- Includes recommendations on digital health interventions, reflecting evolving technologies.
- Emphasizes obesity-associated disability and functioning outcomes beyond weight and BMI.
- Adopts 'in all their diversity' approach, explicitly addressing equity, gender equality, disability inclusion, and cultural responsiveness.
ApplicabilityGeorgia and the region
This guideline is highly relevant for Georgia and neighbouring South Caucasus and Eastern European countries, where childhood and adolescent obesity rates are rising, mirroring global trends. National health programmes will need to adapt recommendations to local contexts, ensuring availability of multidisciplinary teams in primary care settings and referral pathways to specialized obesity management services. Key implementation considerations include: training health workers in non-stigmatizing, culturally appropriate communication; ensuring affordable access to healthy foods and physical activity opportunities; addressing socio-economic barriers to multimodal interventions; establishing supply chains and reimbursement mechanisms for newer pharmacotherapies (e.g. GLP-1 agonists) where indicated; and integrating obesity management into existing child and adolescent health platforms such as school health services. National programmes should monitor equity of access, particularly for girls, rural populations, and adolescents with disabilities or from disadvantaged communities.
Questions this guideline answers
When should pharmacotherapy be considered for adolescents with obesity?
Pharmacotherapy is suggested only for adolescents 10–19 years with obesity and obesity-related complications (e.g. type 2 diabetes, hypertension, dyslipidaemia, mental health issues) after at least 6 months of a structured, supervised multimodal lifestyle programme (diet, physical activity, behaviour change) has failed to achieve weight loss or ameliorate complications. It must be prescribed in a specialized multidisciplinary setting with close monitoring.
What are the eligibility criteria for bariatric surgery in adolescents?
Bariatric surgery is suggested only for adolescents with severe obesity: BMI-for-age >4 standard deviations above the WHO Growth Reference median, or >3 SD with obesity-related complications, and only after ≥6 months of multimodal lifestyle modification has failed. Surgery must be performed in a specialized multidisciplinary setting after close evaluation of complete pubertal development, final adult height, psychological stability, adherence to diet/activity, with structured long-term follow-up and monitoring for adverse events.
How much physical activity should adolescents with obesity aim for?
Adolescents with obesity should aim for at least an average of 60 minutes per day of moderate-to-vigorous intensity, mostly aerobic, physical activity across the week. Vigorous-intensity aerobic activities and those that strengthen muscle and bone should be incorporated at least 3 days per week. Plans should be individualized, considering age, gender, health status, interests, and cultural context, and may include non-competitive activities.
Related on GMJinterconnected resources
Drugs A–Z
Conditions A–Z
Dictionary of Public Health
- Issuer
- World Health Organization
- Type
- Guideline
- Edition
- 1st edition, 2026
- Status
- Current
- Published
- 2026-10-07
- Languages
- English (original); translations planned
- Scope
- Adolescents aged 10–19 years with obesity; primary health care-based interventions including diet, physical activity, behaviour change, multimodal programmes, digital health, pharmacotherapy, and bariatric surgery
- Audience
- Decision-makers, public health policymakers, health workers (especially primary care providers), programme managers, health system managers, NGOs, professional societies, parents and caregivers
- Pages
- 133
- Licence
- CC BY-NC-SA 3.0 IGO
- ISBN
- 978-92-4-012387-8
- Evidence
- GRADE-rated systematic reviews (mostly very low to low-quality evidence); evidence-to-decision frameworks; values and preferences synthesis; expert consensus of multidisciplinary Guideline Development Group
- Next review
- Living guideline approach; monitoring of emerging evidence, new interventions, and implementation considerations; updates as warranted
GMJ Guidelines Library records are original summaries written by the GMJ editorial team from the issuer’s published document and reviewed by a physician. They do not replace the full guideline. The document is the copyright of its issuer and is linked, not hosted. Spotted an error or a newer edition? Tell the Guidelines Desk.
Was this article helpful?