The World Health Organization released its first global guidelines for treating obesity in children and adolescents on 8 October 2026, setting out how health workers should assess and manage the condition in patients aged five to nineteen. The guidelines form part of a wider life-course approach to obesity care that already covers adults, and they arrive as the organisation’s own data shows the condition spreading faster among the young than among any other age group.
WHO figures cited in the guidance put the number of children and adolescents living with obesity in 2024 at 170 million worldwide, made up of 70 million children aged five to nine and 100 million adolescents aged ten to nineteen. Prevalence in this age band has quadrupled since 1990, climbing from 2 per cent of the population to 8 per cent, a trend the organisation links to shifting diets, declining physical activity and the growing availability of ultra-processed food in both wealthy and lower-income countries.
The recommendations draw a clear line by age. For all children and adolescents with obesity, the WHO strongly recommends structured interventions covering diet, physical activity and behaviour change, delivered either one-to-one or through a multimodal programme that brings several of these elements together. Digital health tools, such as apps or remote coaching, receive only a conditional recommendation, and only where a parent or caregiver provides supervision.
For children aged nought to nine, the guidelines explicitly rule out medication, bariatric surgery and weight-loss devices, steering treatment firmly towards lifestyle and behavioural support. For adolescents aged ten to nineteen, approved medicines may be considered, but only after a supervised multimodal lifestyle programme has failed to deliver the desired results, and bariatric surgery is restricted to those with severe obesity who meet strict clinical conditions. The guidelines also call on health workers to address obesity and mental health together, using approaches that engage the whole family rather than treating weight in isolation.
Care, the WHO stresses, should be judged by improvements in overall health, physical functioning and wellbeing rather than by weight loss alone, and it should be age-appropriate, person-centred and followed up over the long term. Alongside clinical guidance, the organisation renewed its call for governments to make healthy diets and physical activity more accessible and affordable, arguing that treatment guidelines alone cannot reverse a trend rooted in food environments and daily routines.
For Kerala and the wider Global South, the guidance lands at a moment when public health systems are already managing a double burden of undernutrition and rising obesity within the same communities, often within the same households. Paediatricians in the state have in recent years reported increasing caseloads of overweight schoolchildren alongside continuing concerns over stunting in poorer districts, a pattern the WHO’s life-course framing is designed to address without treating the two problems as separate crises.
The guidelines do not set out new funding commitments, and their implementation will depend on national health systems adapting existing paediatric and adolescent care pathways. The WHO has indicated that further technical guidance for health workers and policymakers will follow as countries begin to adopt the recommendations.
Nutrition specialists say the practical challenge for many health systems will be building the multimodal programmes the WHO now recommends as a default, rather than relying on dietary advice alone. Structured programmes combining supervised physical activity, family counselling and behavioural support require trained staff and repeat clinic visits that are difficult to sustain in districts where paediatric services are already stretched thin, a constraint likely to shape how quickly the new guidance reaches patients outside major cities.
