More Than One-Third of Populations Worldwide May Have Low Levels of Vitamin D, Study Shows

... new systematic review published in the British Journal of Nutrition , is one of the first to focus on patterns of vitamin D status worldwide and in key population subgroups, using continuous values for 25(OH)D to improve comparisons. Principal ...

http://www.sciencedaily.com/releases/2013/09/130904130403.htm