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Vitamin D - Synthesis
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Vitamin D is a fat soluble vitamin whose synthesis in the body is dependent on factors like latitude, atmospheric pollution, clothing, skin pigmentation, duration and time of exposure to sunlight. Naturally sunlight causes the production of vitamin D endogenously in the skin from 7-dehydrocholesterol present in the subcutaneous fat. Ten minutes of exposure of the skin over the arms and face to sunlight daily is adequate to avoid deficiency.
