Rekha Sharma, president of the Indian Dietetic Association, states that "Close to 40 per cent of Indians are vitamin D deficient." He blames the condition on the modern lifestyle that is becoming more and more common. Dr. Sharma then goes on to list a few of the causes, including lack of sunlight, that are correlated to vitamin D. He is doing a great service with this article, but states that exposing the face and arms for a few minutes per day is adequate to optimize blood levels of D.
It has been known for decades that those who live closer to the equator have a lower risk of multiple sclerosis (MS). In various pieces of research, Vitamin D produced by sunlight, has been suggested as the factor responsible
Vitamin D has a multitude of health benefits, and the only natural way to obtain vitamin D is from sunlight exposure, which causes the skin to produce vitamin D3. The D3 is then is converted to a potent hormone that “turns on” more than 1,000 genes in the genetic engine.