What country is no. 1 in obesity?

Who Tops the List in Global Obesity?

When it comes to obesity rates, one name stands out above the rest: American Samoa. As of 2025, this small U.S. territory in the South Pacific holds the unfortunate title of the most obese country in the world, with a staggering 68.5% of its population classified as obese. That’s nearly seven out of every ten people. Just behind it is Nauru, another Pacific island nation, with a rate of 61%—still alarmingly high.

These figures highlight a growing health crisis, particularly across parts of Oceania, where lifestyle shifts, dietary changes, and limited access to fresh produce have contributed to rising weight issues. While countries like the United States and the UK also face significant challenges, their numbers look modest in comparison. The UK, for instance, has seen its obesity rate climb to 27.8% in 2025—a 3.2% jump from the previous year—adding pressure on public health systems.

Childhood obesity is another growing concern worldwide. Today, around 340 to 390 million children aged 5 to 19 are affected by obesity, a number that continues to rise. This trend signals long-term health risks, from diabetes to cardiovascular disease, if not addressed early.

While American Samoa tops the list, the issue is far from isolated. Obesity is a global problem shaped by culture, economy, and environment. Solutions require more than quick fixes—they demand education, policy changes, and community support. The conversation shouldn't just be about who ranks first, but how we can all move toward healthier futures.