Which Country Has the Highest Obesity Rate
The country with the most obese population is Nauru, where roughly 61% of adults have a body mass index of 30 or higher, according to the World Health Organization.
Why Obesity Rates Are So High There
Diets rich in imported processed foods, limited local agriculture, and low physical activity drive high obesity rates. Small island economies often depend on affordable, calorie-dense imported goods.
Health and Economic Impact
High obesity increases the burden of type 2 diabetes, cardiovascular disease, and disability. These conditions raise healthcare costs and reduce workforce productivity in affected nations.
Global Context and Data Sources
Obesity is rising worldwide, but Pacific island nations consistently rank at the top. For global rankings and methodology, see the World Population Review obesity data.
