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Biotin (also known as vitamin B 7 or vitamin H) is one of the B vitamins. [ 1 ] [ 2 ] [ 3 ] It is involved in a wide range of metabolic processes, both in humans and in other organisms, primarily related to the utilization of fats, carbohydrates, and amino acids. [ 4 ]
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The B 12 vitamin is not abundantly available from plant products [4] (although it has been found in moderate abundance in fermented vegetable products, certain seaweeds, and in certain mushrooms, with the bioavailability of the vitamin in these cases remaining uncertain), [5] making B 12 deficiency a legitimate concern for those maintaining a ...
Vitamin B 12 is the most chemically complex of all vitamins. [6] [2] [7] Only some archaea and bacteria can synthesize vitamin B 12. [8] Vitamin B 12 deficiency is a widespread condition that is particularly prevalent in populations with low or no consumption of animal foods. [9]
Ergocalciferol, also known as vitamin D 2 and nonspecifically calciferol, is a type of vitamin D found in food. It is used as a dietary supplement [ 3 ] to prevent and treat vitamin D deficiency [ 4 ] due to poor absorption by the intestines or liver disease . [ 5 ]
Unlike the other twelve vitamins, vitamin D is only conditionally essential - in a preindustrial society people had adequate exposure to sunlight and the vitamin was a hormone, as the primary natural source of vitamin D was the synthesis of cholecalciferol in the lower layers of the skin’s epidermis, triggered by a photochemical reaction with ...
Vitamin A status involves eye health via two separate functions. Retinal is an essential factor in rod cells and cone cells in the retina responding to light exposure by sending nerve signals to the brain. An early sign of vitamin A deficiency is night blindness. [6] Vitamin A in the form of retinoic acid is essential to normal epithelial cell ...
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