Question

Which is the naturally occurring vitamin d form in skin?

Answer 1

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The major natural source of the vitamin is synthesis of cholecalciferol in the skin from cholesterol through a chemical reaction that is dependent on sun exposure (specifically UVB radiation). ... Vitamin D has a significant role in calcium homeostasis and metabolism.



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Answer 2

Introduction. Vitamin D is a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as adietary supplement. It is alsoproduced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis.

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