Vitamin D: key data sources
Hyppönen E, Power C. Hypovitaminosis D in British adults at age 45 y: nationwide cohort study of dietary and lifestyle predictors. American Journal of Clinical Nutrition 2007;85(3):860-868.
Purdon G, Comrie F, Rutherford L, Marcinkiewicz A. Vitamin D status of Scottish adults: results from the 2010 & 2011 Scottish Health Surveys. Edinburgh, Food Standards Agency in Scotland and Scotcen, 2013.
Zgaga L, Theodoratou E, Farrington SM, et al. Diet, environmental factors, and lifestyle underlie the high prevalence of vitamin D deficiency in healthy adults in Scotland, and supplementation reduces the proportion that are severely deficient. Journal of Nutrition 2011;141(8):1535-1542.