South Korean Adult Obesity Rates Grew 26.9% Over 10 Years, KDCA Says
South Korean adult obesity rates grew by 26.9 percent over the past decade, according to data released by the Korea Disease Control and Prevention Agency on November 9, 2026.
One in every three adults now meets the clinical threshold for obesity.
Key Clinical Takeaways:
- Adult obesity in South Korea rose 26.9 percent over the past ten years, with lifestyle habits such as reduced sleep and lack of resistance training among the associated factors.
- Men show a nationwide obesity rate of 42.5 percent, nearly double the 22.9 percent recorded for women.
- Among men in their thirties and forties, half are now classified as obese, with rates reaching 52.1 percent and 53.1 percent respectively.
The Korea Disease Control and Prevention Agency published its comprehensive findings from the 2025 Community Health Survey on November 9, 2026. The agency defines obesity as a body mass index of 25 or higher. Over the ten-year tracking period, this metric climbed steadily across the population, affecting one in three adults overall.
The data reveals a stark gender gap in epidemiological distribution. The overall male obesity rate stands at 42.5 percent, which is 1.9 times higher than the female rate of 22.9 percent. The highest rates appear among men in their thirties and forties.
Men in their thirties and forties experience the highest vulnerability, with one in two affected. Specifically, men in their thirties register an obesity rate of 52.1 percent, while men in their forties record 53.1 percent.
Women display a fundamentally different age trajectory. Female obesity peaks later in life, with women in their seventies recording the highest demographic rate at 27.4 percent.
| Demographic Group | Obesity Rate | Comparison / Peak Age |
|---|---|---|
| Total Adult Population | 1 in 3 | 26.9% increase over 10 years |
| Adult Men (Overall) | 42.5% | 1.9 times higher than women |
| Men in their 30s | 52.1% | Highest male age group along with 40s |
| Men in their 40s | 53.1% | Highest male age group along with 30s |
| Adult Women (Overall) | 22.9% | Lower than male cohorts |
| Women in their 70s | 27.4% | Highest female age group |
The analysis identified several health behaviors closely associated with increased body mass index values. Individuals who omit resistance training, sleep six hours or less per night, or skip breakfast show higher statistical correlation with obesity. Additional contributing behaviors include a lack of walking exercise and alcohol consumption.
Regional disparities also emerged across municipal districts during the three-year surveillance window. Gangwon Cheorwon-gun, Chungbuk Danyang-gun, and Chungbuk Boeun-gun recorded the highest regional obesity rates. Conversely, Gyeonggi Gwacheon-si, Gyeonggi Seongnam-si Bundang-gu, and Daegu Suseong-gu reported the lowest figures.
Korea Disease Control and Prevention Agency Commissioner Lim Seung-kwan issued a public health warning regarding the findings. “Our country’s adult obesity rate has continuously increased over the past 10 years,” Lim Seung-kwan said, emphasizing the need for corrective action.
“Obesity raises the risk of chronic diseases such as hypertension and diabetes, making it important to practice a healthy lifestyle,” Lim Seung-kwan added.
Disclaimer: The information provided in this article is for educational and scientific communication purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider regarding any medical condition, diagnosis, or treatment plan.
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