
Nauru
Ranking (% obesity by country)
| # | Country | % obesity |
|---|---|---|
| 1 | Nauru | 59.85 |
| 2 | American Samoa | 58.75 |
| 3 | Cook Islands | 53.97 |
| 4 | Palau | 53.15 |
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Vietnam is the least obese country with 2.1% of the population classified as obese. Among OECD countries, the United States is the most obese (36.2%).
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Global Obesity Levels.
| Global Rank | Country | % of Adult Population That Is Obese |
|---|---|---|
| 1 | Nauru | 61.0% |
| 2 | Cook Islands | 55.9% |
| 3 | Palau | 55.3% |
| 4 | Marshall Islands | 52.9% |
The WHO said Europe has higher obesity rates than every other region except the Americas.
What population is most obese
40% or more adults had obesity in 2 states (Kentucky and West Virginia). The South (36.3%) had the highest prevalence of obesity, followed by the Midwest (35.4%), the Northeast (29.9%), and the West (28.7%).
Mexico passed the United States as the most obese country in the world. The prevalence of overweight and obesity is 16.7% in preschool children, 26.2% in school children, and 30.9% in adolescents. For adults, the prevalence of overweight and obesity is 39.7 and 29.9%, respectively.Severe obesity was highest among non-Hispanic Black adults (13.8%), followed by non-Hispanic white adults (9.3%), Hispanic adults (7.9%), and non-Hispanic Asian adults (2.0%).
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BMI of Adults Ages 20 and Older.
| BMI | Classification |
|---|---|
| 25 to 29.9 | Overweight |
| 30+ | Obesity (including severe obesity) |
| 40+ | Severe obesity |
When looking at average BMI, three countries tie for the least obese country in the world, with an average BMI of 21.1: Madagascar, Eritrea, and Ethiopia.

Learn more about Hawaii. The Centennial State has the lowest obesity rate in the nation, and it also ranks highly for public health metrics such as low mortality and infant mortality rates, according to data used in the U.S. News 2021 Best States rankings.
What are the top 3 obese countries
Palau – 55.30% Marshall Islands – 52.90% Tuvalu – 51.60% Niue – 50.00%
women
More women (11.5%) than men (6.9%) have severe obesity. Severe obesity was highest among people ages 40 to 59 (11.5%), followed by people ages 20 to 39 (9.1%) and people ages 60 and older (5.8%).
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BMI of Adults Ages 20 and Older.
| BMI | Classification |
|---|---|
| 30+ | Obesity (including severe obesity) |
| 40+ | Severe obesity |
Women had a higher prevalence of severe obesity (11.5%) than men (6.9%).
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In this study of 2.7 million Chinese adults from 2014 to 2018, we report >15% women and men with overall obesity and over 35% with abdominal obesity.The United States is the world's 10th most obese country and the most obese country in North America with 36.2% of its population having a body mass index of over 30.0.Since 2006, genome-wide association studies have found more than 50 genes associated with obesity, most with very small effects. Several of these genes also have variants that are associated with monogenic obesity, a phenomenon that has been observed in many other common conditions.Only 3.6 percent of Japanese have a body mass index (BMI) over 30, which is the international standard for obesity, whereas 32.0 percent of Americans do. A total of 66.5 percent of Americans have a BMI over 25, making them overweight, but only 24.7 percent of Japanese.
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Colorado
Easy access to trails, sunny weather and a highly educated population churning and burning more calories at altitude are all widely attributed to Colorado being the thinnest state.“Due to a combination of a dozen health-related factors, California is the number one healthiest state in 2022,” according to the study.Only 3.6 percent of Japanese have a body mass index (BMI) over 30, which is the international standard for obesity, whereas 32.0 percent of Americans do. A total of 66.5 percent of Americans have a BMI over 25, making them overweight, but only 24.7 percent of Japanese.
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Obesity affects some groups more than others
Non-Hispanic Black adults (49.9%) had the highest age-adjusted prevalence of obesity, followed by Hispanic adults (45.6%), non-Hispanic White adults (41.4%) and non-Hispanic Asian adults (16.1%).
Severe obesity was highest among non-Hispanic Black adults (13.8%), followed by non-Hispanic white adults (9.3%), Hispanic adults (7.9%), and non-Hispanic Asian adults (2.0%).
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BMI of Adults Ages 20 and Older.
| BMI | Classification |
|---|---|
| 25 to 29.9 | Overweight |
| 30+ | Obesity (including severe obesity) |
| 40+ | Severe obesity |
List of sovereign states by obesity rate
| Country | Obesity rate (%) |
|---|---|
| Russia | 23.1 |
| Saint Kitts and Nevis | 22.9 |
| Panama | 22.7 |
| Haiti | 22.7 |
More than 1 in 3 men (34.1%) and more than 1 in 4 women (27.5%) are overweight. More than 2 in 5 adults (42.4%) have obesity (including severe obesity). About 1 in 11 adults (9.2%) have severe obesity. The percentage of men who are overweight (34.1%) is higher than the percentage of women who are overweight (27.5%).Reducing calories and practicing healthier eating habits are vital to overcoming obesity. Although you may lose weight quickly at first, steady weight loss over the long term is considered the safest way to lose weight and the best way to keep it off permanently.

The unhealthiest states in the U.S. are mostly located in the South.
- Mississippi. Mississippi has consistently been the country's most unhealthy state for several years.
- Louisiana.
- Arkansas.
- Alabama.
- Oklahoma.
- West Virginia.
- Tennessee.
- Kentucky.
“Due to a combination of a dozen health-related factors, California is the number one healthiest state in 2022,” according to the study.