Childhood Obesity Rates Soaring Globally: 220 Million Projected to Be Obese by 2040

A new report from the World Obesity Federation warns that without significant intervention, over 220 million children worldwide could be obese by 2040. The findings, released on World Obesity Day (March 4th), highlight a critical global health crisis and a failure to adequately address the rising rates of childhood obesity.

Global Obesity Statistics: A Growing Concern

In 2025, approximately 180 million children globally were living with obesity. However, projections indicate a substantial increase, with an estimated 227 million children aged 5-19 expected to have obesity by 2040. Over half a billion children in this age group are predicted to be overweight. The World Obesity Atlas 2026 estimates that at least 120 million school-age children will exhibit early signs of chronic diseases linked to high body mass index (BMI) by 2040.

Regional Disparities in Childhood Obesity

The report reveals significant regional inequalities in obesity rates. Ten countries, primarily located in the Western Pacific region and the Americas, account for more than half of the school-age children who are overweight or obese. Notably, the fastest growth in obesity rates is occurring in low- and middle-income countries.

Specific country data reveals alarming trends:

• United States: Approximately 27 million children aged 5-19 have a high BMI, placing the US behind only China (62 million) and India (41 million) in terms of total numbers. This equates to two in five US children being overweight or obese.
• United Kingdom: Around 3.8 million children have a high BMI, a record number, making the UK one of the worst-performing countries in Europe, with twice the rates of overweight and obese children compared to France and Italy.

Health Consequences and Projections

The World Obesity Federation predicts that by 2040, 370,000 children aged 5-19 in the UK are expected to present signs of cardiovascular disease, and 271,000 are estimated to exhibit signs of hypertension. The World Obesity Atlas 2025 highlights the urgent need for preventative measures to mitigate these long-term health risks.

Calls for Action: Policy Recommendations

Experts are urging governments and policymakers to take decisive action to address the childhood obesity epidemic. Recommendations include:

• Implementing sugar taxes to discourage the consumption of sugary drinks and foods.
• Establishing restrictions on the marketing of junk food, particularly to children.
• Creating environments that promote physical activity and healthy lifestyles.
• Strengthening healthcare systems to provide comprehensive obesity care.

Dr. Kremlin Wickramasinghe, regional advisor for nutrition, physical activity and obesity at the World Health Organization, Europe, emphasized that childhood obesity is a “failure of environments” and called for mandatory, rather than voluntary, marketing restrictions and front-of-pack labeling.

Government Responses and Ongoing Efforts

Some governments are beginning to implement policies aimed at curbing childhood obesity. For example, the UK is restricting junk food advertising on television before 9 pm and online, a move projected to remove up to 7.2 billion calories per year from children’s diets, and is granting local authorities greater authority to prevent speedy-food establishments from opening near schools.

The Path Forward: A Collective Responsibility

Childhood obesity is not an inevitable outcome. Katharine Jenner, executive director of the Obesity Health Alliance, asserts that the projected rise in early signs of heart disease and hypertension should serve as a wake-up call regarding the consequences of government inaction. Addressing this crisis requires a collective effort from governments, healthcare professionals, educators, families, and the food industry to create healthier environments and empower children to make informed choices.