The World Health Organization’s first global guidance on childhood obesity prioritises family-led nutrition, activity and behaviour programmes, while limiting medicines and surgery for older adolescents.
The World Health Organization has issued its first global guidance on obesity in children and adolescents, drawing a hard line against weight-loss medicines, bariatric surgery and devices for anyone under 10. Instead, the agency says care should begin with structured nutrition support, regular physical activity and behaviour change programmes delivered with families at the centre. WHO launched the new guidance on 7 October and said it is meant to help health systems respond to a problem that has become more common across every region.
The scale of the challenge is stark. WHO says 170 million children and adolescents aged 5 to 19 were living with obesity in 2024, and the prevalence in that age group has risen fourfold since 1990. The agency also notes that obesity can be measured differently depending on age: for children and adolescents aged 5 to 19, it is defined as a body mass index more than two standard deviations above the WHO growth reference median. WHO describes obesity as a chronic, relapsing disease that can contribute early in life to later health problems, including type 2 diabetes and cardiovascular disease.
For children aged 0 to 9, the new guidance rejects pharmacological treatment, bariatric surgery and weight-loss devices. For adolescents aged 10 to 19, WHO says medicines, including GLP-1 drugs, may be considered only after a supervised lifestyle programme has failed to deliver the desired result, and surgery should be reserved for severe cases under strict conditions. Reuters reported that those conditions include physical and mental maturity and at least six months of unsuccessful treatment. Dr Luz María De Regil, WHO’s nutrition director, told Reuters that evidence on GLP-1 drugs in young people is still insufficient and that the guidance may change as more trial results emerge.
The agency also gives unusual weight to the social and emotional burden that often accompanies obesity in childhood. WHO says affected children and teenagers can face stigma, discrimination and bullying, and urges clinicians to treat obesity and mental health concerns together rather than as separate issues. That broader framing fits with the practical role of nurses, who often help families navigate weight concerns, screen for emotional distress and build trust over time in schools, clinics and community settings.
WHO’s position is more cautious than the American Academy of Pediatrics, which in 2023 advised US clinicians to consider weight-loss medication for adolescents aged 12 and older with obesity, alongside lifestyle treatment, and to refer teenagers with severe obesity aged 13 and older for evaluation for metabolic and bariatric surgery. The US Centres for Disease Control and Prevention says about one in five American children and adolescents, or roughly 14.7 million young people aged 2 to 19, had obesity from 2017 through March 2020. For parents and caregivers, the new guidance underscores that for most children, the first and most important treatment remains consistent support, healthier routines and careful follow-up rather than medication or surgery.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
