which country has the highest obesity rate

The latest aggregated data shows that American Samoa currently has the highest adult obesity rate in the world, at around three‑quarters of its population (about 75% of adults classified as obese).

Quick Scoop: Who tops the obesity list?

If you look at recent global rankings based on World Health Organization–linked datasets (compiled by platforms like World Population Review), American Samoa sits at the top with an estimated obesity prevalence of about 75.6%. It is followed closely by several other Pacific island nations such as Tonga, Nauru, Tokelau, and the Cook Islands, all with obesity rates in roughly the high‑60% to low‑70% range.

These numbers usually refer to the proportion of adults with a body mass index (BMI) of 30 or higher, which is the standard clinical definition of obesity in global comparisons. Because the data is compiled over multiple years and sources (WHO, academic groups, and federations like the World Obesity Federation), rankings can shift slightly with new releases, but American Samoa has consistently remained at or near the top in the most recent global tables.

Why are small islands so high?

Many of the countries with the highest obesity rates are small Pacific island states rather than large, well‑known countries like the United States. Researchers and public‑health bodies often point to a mix of factors:

• Rapid nutrition transition from traditional diets to imported, ultra‑processed foods.

• High cost and low availability of fresh local produce compared to cheap, energy‑dense imports.

• More sedentary lifestyles as economies urbanize and shift away from traditional physical labor or subsistence activities.

• Genetic and metabolic susceptibilities that may amplify weight gain when exposed to modern high‑calorie diets.

This combination makes obesity rates in places like American Samoa, Tonga, and Nauru dramatically higher than the global average and even higher than in many high‑income Western countries.

How does this compare to big countries?

For context, many people assume the United States is at the top of the global list, but while U.S. adult obesity is very high by global standards (around the low‑40% range in recent WHO‑based estimates), it is still well below the levels seen in the highest‑ranking Pacific island states. Other high‑income countries in the Middle East and the Americas, such as Kuwait and Qatar in some obesity maps and rankings, also approach or exceed 40–45%, but they still tend to trail the extreme values recorded for American Samoa and its Pacific neighbors.

Mini FAQ

1. What definition is used for “obesity rate”?
   Most datasets use the share of adults with BMI ≥ 30, based on standardized WHO criteria, derived from surveys and modelling.

2. Are these numbers exact?
   They are estimates built from survey data, health records, and statistical modelling, so they can change slightly with new data or methods, but the broad ranking (with American Samoa at or near the top) is robust across recent sources.

Information gathered from public forums or data available on the internet and portrayed here.