References
- Arunabh S, Pollack S, Yeh J, Aloia JF (2003) Body fat content and 25-hydroxyvitamin D levels in healthy women. J Clin Endocrinol Metab 88: 157-161. https://doi.org/10.1210/jc.2002-020978
- Barger-Lux MJ, Heaney RP (2002) Effects of above average summer sun exposure on serum 25-hydroxyvitamin D and calcium absorption. J Clin Endocrinol Metab 87: 4952-4956. https://doi.org/10.1210/jc.2002-020636
- Chang WC, Kwon IS, Park BJ, Bae SH, Park SC (2003) The association of vitamin D and parathyroid hormone with bone mineral density in Korean postmenopausal women. J Korean Geriatr Soc 7: 194-205.
- Chapuy MC, Preziosi P, Maamer M, Arnaud S, Galan P, Hercberg S, Meunier PJ (1997) Prevalence of vitamin D insufficiency in an adult normal population. Osteoporos Int 7: 439-443. https://doi.org/10.1007/s001980050030
- Chen SH, Jen IA, Chuang SY, Lin KC, Chou P (2006) Community-based study on summer-winter differences of component of metabolic syndrome in Kinmen, Taiwan. Prev Med 43: 129-135. https://doi.org/10.1016/j.ypmed.2006.02.013
- Ford ES, Ajani UA, McGuire LC, Liu S (2005) Concentrations of serum vitamin D and the metabolic syndrome among U.S. adults. Diabetes Care 28: 1228-1230. https://doi.org/10.2337/diacare.28.5.1228
- Friedewald WT, Levy RI, Fredrickson DS (1972) Estimation of the concentration of low-density lipoprotein cholesterol in plasma, without use of the preparative ultracentrifuge. Clin Chem 18: 499-502.
- Haffner SM, Miettinen H, Stern MP (1997) The homeostasis model in the San Antonio Heart Study. Diabetes Care 20: 1087-1092. https://doi.org/10.2337/diacare.20.7.1087
- Holick MF (2002) Vitamin D: The underappreciated D-lightful hormone that is important for skeletal and cellular health. Curr Opin Endocrinol Diabetes 9: 87-98. https://doi.org/10.1097/00060793-200202000-00011
- Hollis BW, Pittard WB 3rd. (1984) Evaluation of the total fetomaternal vitamin D relationships at term: evidence for racial differences. J Clin Endocrinol Metab 59: 652-657. https://doi.org/10.1210/jcem-59-4-652
- Jarrett RJ, Murrells TJ, Shipley MJ, Hall T (1984) Screening blood glucose values: Effects of season and time of day. Diabetologia 27: 574-577. https://doi.org/10.1007/BF00276970
- Kim GS, Kim SY, Kim MK, Lim DJ, Lee SS, Baek KH, Han JH, Song KH, Kim HS, Lee KW, Son HY, Kang MI (2008) Reappraisal of the prevalence of vitamin D inadequacy in Korea: A single center's experience. Korean J Bone Metabolism 15: 109-115.
- Lee ES, Park HM (2006) The relationship between serum vitamin D concentration and body mass index in Korean postmenopausal women. J Korean Soc Menopause 12: 141-147.
-
Lemire JM (1995) Immunomodulatory actions of 1,25-dihydroxyvitamin
$D_3$ . J Steroid Biochem Mol Biol 53: 599-602. https://doi.org/10.1016/0960-0760(95)00106-A - Lim HJ (2005) Serum 25-hydroxyvitamin D status and associated factors in premenopausal working women. Korean J Community Nutr 10: 79-90.
- Lim HJ, Kim JI (2006) Serum 25-hydroxyvitamin D status in wintertime in premenopausal working women. Korean J Nutr 39: 649-660.
- Lips P (2006) Vitamin D physiology. Prog Biophys Mol Biol 92: 4-8. https://doi.org/10.1016/j.pbiomolbio.2006.02.016
- Looker AC (2005) Body fat and vitamin D status in black versus white women. J Clin Endocrinol Metab 90: 635-640. https://doi.org/10.1210/jc.2004-1765
- Malabanan A, Veronikis IE, Holick MF (1998) Redefining vitamin D insufficiency. Lancet 351: 805-806.
- Martins D, Wolf M, Pan D, Zadshir A, Tareen N, Thadhani R, Felsenfeld A, Levine B, Mehrotra R, Norris K (2007) Prevalence of cardiovascular risk factors and the serum levels of 25-hydroxyvitamin D in the United States: data from the Third National Health and Nutrition Examination Survey. Arch Intern Med 167: 1159-1165. https://doi.org/10.1001/archinte.167.11.1159
- O''Brien KO, Nathanson MS, Mancini J, Witter FR (2003) Calcium absorption is significantly higher in adolescents during pregnancy than in the early postpartum period. Am J Clin Nutr 78: 1188-1193. https://doi.org/10.1093/ajcn/78.6.1188
- Parikh SJ, Edelman M, Uwaifo GI, Freedman RJ, Semega Janneh M, Reynolds J, Yanovski JA (2004) The relationship between obesity and serum 1,25-dihydroxy vitamin D concentrations in healthy adults. J Clin Endocrinol Metab 89: 1196-1199. https://doi.org/10.1210/jc.2003-031398
- Park HM, Kim JG, Choi WH, Lim SK, Kim GS (2003) The vitamin D nutritional status of postmenopausal women in Korea. Korean J Bone Metabolism 10: 47-55.
- Pittas AG, Lau J, Hu FB, Dawson-Hughes B (2007) The role of vitamin D and calcium in type 2 diabetes. A systematic review and meta-analysis. J Clin Endocrinol Metab 92: 2017-2029. https://doi.org/10.1210/jc.2007-0298
- Scragg R, Sowers M, Bell C (2004) Third national health and nutrition examination survey: Serum 25-hydroxyvitamin D, diabetes, and ethnicity in the third national health and nutrition examination survey. Diabetes Care 27: 2813-2818. https://doi.org/10.2337/diacare.27.12.2813
- Seth A, Marwaha RK, Singla B, Aneja S, Mehrotra P, Sastry A, Khurana ML, Mani K, Sharma B, Tandon N (2009) Vitamin D nutritional status of exclusively breast fed infants and their mothers. J Pediatr Endocrinol Metab 22: 241-246.
- Shin JS, Song CH, Cho DJ, Lee BS, Bai SW, Park JH, Park KH (2005) The effects of vitamin D and parathyroid hormone in Korean postmenopausal women. J Korean Soc Menopause 11: 56-62.
- Snijder MB, van Dam RM, Visser M, Deeg DJ, Dekker JM, Bouter LM, Seidell JC, Lips P (2005) Adiposity in relation to vitamin D status and parathyroid hormone levels: a population-based study in older men and women. J Clin Endocrinol Metab 90: 4119-4123. https://doi.org/10.1210/jc.2005-0216
- Suarez L, Barrett-Connor E (1982) Seasonal variation in fasting plasma glucose levels in man. Diabetologia 22: 250-253. https://doi.org/10.1007/BF00281300
- van der Wielen RP, Lowik MR, van den Berg H, de Groot LC, Haller J, Moreiras O, van Staveren WA (1995) Serum vitamin D concentrations among elderly people in Europe. Lancet 346: 207-210. https://doi.org/10.1016/S0140-6736(95)91266-5
- Walters MR (1992) Newly identified actions of the vitamin D endocrine system. Endocr Rev 13: 719-764.