Association of Serum 25-Hydroxyvitamin D and Vitamin D Intake with the Prevalence of Metabolic Syndrome in Korean Adults: 2013–2014 Korea National Health and Nutrition Examination Survey

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Abstract
Vitamin D deficiency is prevalent in Korea and an insufficient vitamin D status increases the risk of various chronic diseases including metabolic syndrome (MetS). We examined the relationship between serum 25-hydroxyvitamin D (25(OH)D) levels, dietary vitamin D intake, and MetS. The 2013–2014 Korea National Health and Nutrition Examination Survey’s (KNHANES) included participants (n = 4.541; 1145 men; 1368 women) who were aged ≥19. In men, higher serum 25(OH)D levels were correlated with significantly increased protein intake (p = 0.032) and saturated fatty acid intake (p = 0.006), but significantly decreased fat intake (p = 0.027), monounsaturated fatty acid intake (p = 0.005), and polyunsaturated fatty acid intake (p = 0.003), and significantly decreased serum triglycerides levels (p = 0.002), whereas women had no association with any dietary intake or biochemical markers. Furthermore, our study found a significant negative correlation between abdominal obesity (OR, 0.970; CI, 0.946, 0.994) and hypertriglyceridemia (OR, 0.974; CI, 0.950, 0.998) and serum 25(OH)D levels in men, as well as a significant decrease in hypertriglyceridemia (OR, 0.980; CI, 0.961, 0.999) with vitamin D intake. However, women had a significantly negative correlation between serum LDL cholesterol (β, −1.751; p = 0.018) and vitamin D intake. By increasing the vitamin D intake and serum 25(OH)D levels, Korean adults could reduce their risk of MetS-related factors.
Funding Information
  • Ministry of Education of the Republic of Korea (NRF-2022R1A2C1091570, NRF-2020R1A5A8017671)
  • Chungnam National University (NRF-2022R1A2C1091570, NRF-2020R1A5A8017671)

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