Vitamin-D the metabolic marker
First things first: Vitamin-D is … not a Vitamin! It is not a true vitamin because the human body has the capacity tosynthesize its own cholecalciferol (D3), endogenously through ultraviolet exposure of the skin (UV-B radiation). It is more accurate to view it as a steroid hormone. Vitamin-D can also be received from diet, but with a very small…
