The Sun causes the synthesis of Vitamin D in the skin.
Your skin is responsible for synthesis of Vitamin D.
synthesis of a Vit. D
vitamin D
Vitamin D is produced by ultraviolet radiation on your skin. The UV light converts a precursor molecule to vitamin D.
Vitamin D is synthesized at the skin. It is synthesised by the reaction between the sun's rays and estrogen (Actually look up to be sure, it could be a different steroid very similar to estrogen)
Vitamin D.
Vitamin D
Vitamin D, of course.
Protection
Vitamin D is formed in your skin when the skin is exposed to UV
Natural sunlight is an excellent source of vitamin d. The skin absorbs vitamin d from the sun's rays, but it is still essential to use sunblock to prevent skin damage.
Vitamin A and Vitamin E are the 2 i know of.