WHO: Childhood Obesity Cases Quadrupled Since 1990

The World Health Organization has published its first guidelines for childhood obesity care, setting out how health systems should treat young patients with structured lifestyle support rather than medicines or surgery. The agency said on 7 October that 170 million children and adolescents aged 5 to 19 were living with obesity in 2024, including seventy million younger children and a hundred million adolescents. Prevalence in that age group has quadrupled since 1990, rising from 2% to 8%.

For children and adolescents already living with obesity, the WHO strongly recommends structured dietary, physical activity and behaviour-changing interventions, delivered individually or as part of a multimodal programme. Digital health interventions get a conditional recommendation, provided a parent or caregiver supervises their use. Food and health keep colliding in the news: a food pantry experiment lowered blood pressure for years, while probiotic use is surging even as actual fiber intake is not.

The guidance sets clear limits on medical treatment for younger children. For those aged 0 to 9, the WHO does not recommend pharmacological treatment, bariatric surgery or weight-loss devices. For older children, approved medicines may be considered only when a supervised multimodal lifestyle programme has not achieved the desired results. Bariatric surgery may be considered under strict conditions for adolescents with severe obesity.

"The foundation of obesity care for children and adolescents is not medicine or surgery, but access to comprehensive support that enables healthy eating, physical activity and sustainable behaviour change," said Dr Luz María De Regil, director of the WHO Department of Nutrition and Food Safety, in a statement announcing the guidelines.

The guidance arrives as weight-loss medicines have drawn growing public attention. The WHO's position keeps medicines as a later option for adolescents, not a starting point, and rules them out entirely for younger children. Together with the agency's existing recommendations for adults, the new guidelines form part of a life-course approach to obesity care from childhood through adolescence to adulthood. The guidance is published as two documents, one for children from 29 days old to under 10 and one for adolescents, reported by YallaYou News. The documents are designed to help countries adapt care pathways through primary health care and support families over time.

A chronic condition, not a short-term problem

The WHO describes obesity as a chronic, relapsing disease that can be managed with effective care. Its consequences can begin early in life, raising the risk of noncommunicable diseases including type 2 diabetes and cardiovascular disease. Children and adolescents living with obesity may also face stigma, discrimination and bullying, according to the agency.

Mental health is part of the new guidance. The WHO says anxiety, depression, low self-esteem and emotional dysregulation can contribute to unhealthy eating, physical inactivity and social withdrawal, while stigma and bullying harm emotional well-being. The guidance asks health workers to treat mental health as part of childhood obesity care, addressing both conditions early and together through inclusive, developmentally appropriate and family-engaged strategies.

Care should go beyond weight loss and aim to improve health, functioning and well-being, the agency said. The recommendations call for person-centred, age-appropriate care that responds to the needs of each child and family, with long-term follow-up and continuity. Preventing and managing obesity, the WHO said, protects physical and mental health and supports healthy growth, education, social well-being and quality of life.

What health systems are being asked to do

The guidelines are written for health workers and health systems, setting out how countries can deliver timely, evidence-based and people-centred care through primary health services, with specialist referrals where needed. Assessment should consider a child's individual circumstances and health rather than weight alone, according to the European Association for the Study of Obesity, which took part in the launch and welcomed the guidance.

The WHO says treatment alone cannot reverse the rise, and it continues to call for policies that make healthy diets and physical activity more accessible and affordable. That includes regulatory and fiscal measures, alongside action in education, urban planning, transport and social protection. The broader wellness conversation is moving as well, as Filipino Gen Z finds its strength in holistic health. Governments, the agency said, need to take on the environments that shape what children eat and how they move, not only the care they receive once obesity has developed.