Childhood obesity has been rising quietly around the world for decades. On 7 October 2026, the World Health Organization responded with something it had never issued before: global guidelines on how health systems should care for children and adolescents living with obesity.
The guidelines are written mainly for doctors, nurses and health services, but their message is useful for every parent and caregiver. Here's what they say, in plain language, and what families can take from them.
The scale of the problem
WHO's figures show why it acted. In 2024, an estimated 170 million children and adolescents aged 5–19 were living with obesity. That includes 70 million children aged 5–9 and 100 million adolescents aged 10–19. Obesity prevalence in this age group has quadrupled since 1990, rising from 2% to 8%.
WHO describes obesity as a chronic, relapsing disease that can be managed with effective care. Its effects can start early in life, raising the risk of conditions such as type 2 diabetes and cardiovascular disease. Children living with obesity can also face stigma, discrimination and bullying.
What WHO recommends
Lifestyle support comes first
WHO strongly recommends structured interventions covering diet, physical activity and behaviour change, delivered either one-to-one or as part of a "multimodal" programme that combines several approaches. Digital health tools, such as apps, are conditionally recommended, with supervision from a parent or caregiver.
No medicines or surgery for young children
For children aged 0–9, WHO does not recommend weight-loss medicines, bariatric surgery or weight-loss devices.
A cautious role for medicines in adolescents
For adolescents aged 10–19, approved medicines may be considered only when a supervised multimodal lifestyle programme hasn't 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." Dr Luz María De Regil, WHO
Mental health is part of the picture
One of the most important parts of the guidelines is the link between weight and emotional wellbeing. WHO notes that anxiety, depression, low self-esteem and difficulty regulating emotions can contribute to unhealthy eating, inactivity and social withdrawal. At the same time, stigma and bullying can harm a child's emotional health. The guidelines urge health workers to address obesity and mental health early and together, using approaches that are inclusive, suited to the child's age and involve the family.
Success isn't just a number on the scale
WHO stresses that managing obesity should go beyond weight loss. The aim is to improve health, functioning and wellbeing. Care should be person-centred, age-appropriate and responsive to each family's needs, with long-term follow-up. In practice, that means celebrating more energy, better sleep, stronger fitness and greater confidence as real progress.
What families can do at home
The guidelines focus on health services, but their principles translate well into everyday family life:
- Make changes as a family. Children do best when the whole household eats and moves in healthier ways, rather than one child being singled out.
- Keep water as the default drink. Make it easy to reach for water at meals and between them.
- Fill the plate with plants. Aim for vegetables, fruit, whole grains and pulses at most meals.
- Build movement into the day. Walking to school, active play, sport and family outings all count.
- Protect sleep. Regular bedtimes and screens out of bedrooms help with energy, mood and appetite.
- Cook together. Involving children in shopping and cooking builds skills and curiosity about food.
How to talk about weight kindly
Words matter. Focus on health, strength and energy rather than appearance or numbers. Avoid labelling foods as "good" or "bad", and never use food as a reward or punishment. If your child is teased or bullied, take it seriously and involve the school. A child who feels supported is far more likely to build lasting healthy habits.
When to seek professional help
Talk to a doctor or nurse if you're worried about your child's weight, growth, eating patterns or mood. A health professional can assess growth properly for your child's age and sex, check for related conditions and point you towards structured support. Under WHO's guidance, that support should come before any discussion of medicines.
Small swaps that add up
Big overhauls rarely last. Small, consistent changes often work better for families:
- Offer fruit or yoghurt instead of sweets as an everyday dessert, saving treats for special occasions.
- Serve vegetables first at dinner, when children are hungriest.
- Replace one screen session a day with a walk, bike ride or game outdoors.
- Keep regular mealtimes, eaten together at the table where possible.
- Let children help plan one meal each week.
Beyond the clinic
WHO is clear that treatment alone can't reverse the rise in obesity. It continues to call for policies that make healthy diets and physical activity more accessible and affordable. Families can't fix that alone, but schools, communities and governments all have a part to play.
The takeaway
WHO's first global guidelines on child and adolescent obesity send a compassionate, practical message: start with support for healthy eating, activity and behaviour change, look after mental health alongside physical health, and keep medicines and surgery for carefully selected older children. For parents, the most powerful tools are still the simplest ones, practised together as a family.
Note: This article is for general information and isn't a substitute for personalised medical advice.
