We know that ultraviolet radiation can have harmful effects on the skin and that adequate intake can be achieved by diet or oral supplements. So why is there a debate on how much sun one needs to achieve a so-called “normal” vitamin D level? The answer is none. Everyone, regardless of skin color, should take a daily vitamin D supplement (J. Nutr. 2006;136:1126-9; Am. J. Clin. Nutr. 2004;80:1763S-6S).
Commentary
The Vitamin D Debate
