Sunlight, the glaring brightness and the burning heat is all that are remembered forever. This giant torch over the planet also gifts us vitamin D with every ray of light. Isn’t that an amazing gift that is never boasted about Production of Vitamin D is initiated when the skin is exposed to UV-B present in the sunlight wherein 7-dehydrocholesterol, is absorbed and converted into previtamin D3 that gets transformed into vitamin D3. UV-B radiation helps the previtamins and vitamins for its conversion into various photo products consisting unique biologic properties therefore, they absorb UVB radiations. Levels of vitamin D are influenced by seasonal variations, latitude, altitude, air pollution, skin pigmentation, ageing, etc. Metabolism of vitamin D takes place in the liver where it gets converted into 25 hydroxy vitamin D. 25 hydroxyvitamin is a major circulating form of vitamin D.
