group of vitamins
Vitamin D is conditionally assigned to the group of vitamins, in fact it is a fat-soluble prohormonal steroid that is involved in endocrine, paracrine and autocrine regulation [Vanchinathan, Lim 2012].
Synthesis of Vitamin D in the Skin
According to the International Lighting Engineering Commission (MSC), effective radiation (i.e., the effectiveness of each wavelength for the synthesis of vitamin D in the skin) covers the spectral range of 255–330 nm with a maximum of about 295 nm (UVB). Exposure to UV light, which induces redness of the skin at a minimum erythema dose for 15– Continue reading