Obesity Affects 1 Billion People Around the World

Understanding the causes, risks, and solutions behind one of the world’s fastest-growing health challenges.

An Expanding Crisis Across All Ages and Economies

Obesity has become a major global health crisis impacting every corner of the world, with some of the most rapid increases in prevalence seen in low- and middle-income countries.

More than a billion children, adolescents, and adults are living with obesity, globally, with rates of obesity among children and adolescents quadrupling between 1990 and 2022.

A Growing Global Health Challenge

Modern lifestyles, high-calorie diets, reduced physical activity, genetics and environmental factors all contribute to the increasing prevalence of obesity across populations worldwide.

1B+

People Living With Obesity Worldwide

200+

Countries Included in Global Study

1.9B

Projected Cases by 2035

$4T

Economic Impact by 2035

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A New Way to Define Obesity
A new framework from the European Association for the Study of Obesity (EASO) expands the definition beyond BMI, incorporating waist-to-height ratio and obesity-related complications. This approach aims to better identify individuals at risk.
Using the updated criteria, nearly 1 in 5 individuals previously labeled as overweight would now be classified as having obesity, significantly increasing the number of people identified with the condition.
People reclassified under the new definition often have more comorbidities, such as hypertension, diabetes, and cardiovascular disease, and show an increased risk of mortality compared to healthy individuals of normal weight.
Experts continue to debate the best way to define obesity, with multiple frameworks emerging. While new models provide deeper insights, questions remain about their ability to predict long-term health outcomes.
Improved diagnostic tools and earlier intervention are critical. Identifying at-risk individuals sooner could help prevent disease progression and improve treatment outcomes in obesity-related conditions.

Obesity is no longer just a matter of weight – it is a complex, chronic disease linked to serious health risks and comorbidities. Recent redefinitions, like the EASO framework, highlight that many people previously considered “overweight” may actually be at higher risk and need early intervention. Addressing obesity requires better diagnosis, targeted treatment, and lifestyle support to prevent complications and improve overall health. With timely action, it is possible to reduce risks and restore a healthier quality of life for those affected.

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