Only the exposed areas of skin can absorb the UVB rays from the sun which the body converts to the vit D3 that we need. As we age it is harder for our bodies to convert the UVB rays into vit D3 and we have to be careful not to get to much UVA rays in the process which are the harmful rays. As Vit D is implicated in every disease, it is really important to keep up our VIt B,which is fat soluble.. Most of us are Vit D deficient and we need about 5000+ units a day just to keep up our levels. Being in Canada in the winter, I will up the amount especially if there is a bug going around. Dr. Cannell of the Vit D council has a newsletter that you can get that has many interesting articles. It comes out about once a month and is free. Some articles require membership to read, but I have found the free ones have lots of good info.
LW888
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"A journey of a thousand miles begins with a single step" Lao-tzu
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