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Vitamin D levels continue to fall in Korea– June 2018

Vitamin D status in South Korean population: Seven-year trend from the KNHANES

Medicine: June 2018 - Volume 97 - Issue 26 - p e11032, doi: 10.1097/MD.0000000000011032
Park, Ju-Hyun, PhDa; Hong, In Young, MSa; Chung, Jae Woo, MD, PhDb; Choi, Han Seok, MD, PhDc,

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Vitamin D deficiency has become one of the most prevalent health problems in modern society. However, there has been no study that has reported the trend of vitamin D status in Asia. We performed an observational study to investigate the trend of vitamin D status in South Korea based on a representative national database acquired from the Korea National Health and Nutrition Examination Surveys (KNHANES) conducted from 2008 to 2014. A total of 39,759 patients were included in the final analyses. Serum 25-hydroxyvitamin D (25 (OH)D) levels were measured by radioimmunoassay. The overall mean serum level of 25 (OH)D was 45.7 nmol/L in males and 40.9 nmol/L in females in KNHANES 2008 to 2014. There was a significant trend toward lower serum 25 (OH)D levels from 2008 to 2014 in males by −1.2 (95% confidence interval CI −1.5 to −0.9) nmol/L per year and in female by −0.7 (95% CI −0.9 to −0.4) nmol/L per year. The overall mean serum level of 25 (OH)D in 2008 was 53.0 nmol/L in males and 45.7 nmol/L in females. It decreased to 43.2 nmol/L in males and 39.2 nmol/L in females in 2014. Vitamin D deficiency, defined as the serum 25 (OH)D level of <50 nmol/L, was found in 65.7% of males and 76.7% of females in overall population. A significant increasing trend of vitamin D deficiency was also observed. The prevalence of vitamin D deficiency in 2008 was 51.8% in males and 68.2% in females, but rose to 75.2% and 82.5%, respectively, in 2014. The present study demonstrated that vitamin D status in South Koreans is still deteriorating. More extensive and proactive measures are needed to improve vitamin D status in South Korea.


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ID Name Comment Uploaded Size Downloads
10101 Korea trend male age.jpg admin 03 Jul, 2018 33.15 Kb 744
10100 Korea trend.jpg admin 03 Jul, 2018 24.33 Kb 6368
10099 Korean trends.pdf admin 03 Jul, 2018 734.37 Kb 719