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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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VS age - for males

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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10101 Korea trend male age.jpg admin 03 Jul, 2018 15:04 33.15 Kb 572
10100 Korea trend.jpg admin 03 Jul, 2018 15:04 24.33 Kb 5847
10099 Korean trends.pdf PDF 2018 admin 03 Jul, 2018 15:03 734.37 Kb 618