J Obes Metab Syndr.
2021 Jun;30(2):141-148. 10.7570/jomes21056.
Obesity Fact Sheet in Korea, 2020: Prevalence of Obesity by Obesity Class from 2009 to 2018
- Nam GE1
- Kim YH1
- Han K2
- Jung JH3
- Rhee EJ4
- Lee WY
4 - On Behalf of the Taskforce Team of the Obesity Fact Sheet of the Korean Society for the Study of Obesity
- Affiliations
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- 1Department of Family Medicine, Korea University College of Medicine, Seoul, Korea
- 2Department of Statistics and Actuarial Science, Soongsil University, Seoul, Korea
- 3Department of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
- 4Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
- KMID: 2517318
- DOI: http://doi.org/10.7570/jomes21056
Abstract
- Background
We examined the prevalence of different obesity classes in South Korea based on the 2020 Obesity Fact Sheet.
Methods
Individuals ≥20 years who underwent a health examination provided by the Korean National Health Insurance System between 2009 and 2018 were included and the prevalence of class I, II, and III obesity was calculated for the total sample and age, sex, and region subgroups.
Results
From 2009 to 2018, the prevalence of all obesity classes increased across all sex and age groups and all regions. In the study population as a whole, the prevalence of class I, II, and III obesity was 29.1%, 3.2%, and 0.3% in 2009 and 32.5%, 5.2%, and 0.81% in 2018, respectively. Among young-aged individuals, the prevalence of each obesity class was 23.7%, 3.6%, and 0.44% in 2009 and 28.3%, 6.9%, and 1.61% in 2018, respectively. The prevalence among middle-aged individuals was 31.6%, 3.1%, and 0.24% in 2009 and 33.6%, 4.8%, and 0.59% in 2018; and among elderly individuals was 31.9%, 3.1%, and 0.21% in 2009 and 35.5%, 3.9%, and 0.32% in 2018. The increase in the prevalence of all obesity classes among young adults was dramatic. In particular, the class III obesity prevalence increased up to 3.8- and 3.5-fold between 2009 and 2018 in young men and women.
Conclusion
Based on the 2020 Obesity Fact Sheet, there was a dramatic increase in the prevalence of class II and III obesity from 2009 to 2018 among young adults, as well as the population as a whole. Optimal strategies for the prevention and treatment of obesity are needed considering the recent obesity epidemic in South Korea.
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