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Cholecalciferol is a form of vitamin D which is naturally synthesized in skin and functions as a pro-hormone, being converted to calcitriol. This is important for maintaining calcium levels and promoting bone health and development. [4] As a medication, cholecalciferol may be taken as a dietary supplement to prevent or to treat vitamin D ...
Tocopherols (/ t oʊ ˈ k ɒ f ə ˌ r ɒ l /; [1] TCP) are a class of organic compounds comprising various methylated phenols, many of which have vitamin E activity. Because the vitamin activity was first identified in 1936 from a dietary fertility factor in rats, it was named tocopherol, from Greek τόκος tókos 'birth' and φέρειν phérein 'to bear or carry', that is 'to carry a ...
These include DL-alpha tocopheryl acetate, a synthetic form of vitamin E derived as a waste product from the petrochemical industry; a synthetic form of vitamin B1 called thiamine mononitrate ...
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 ...
Salmon is one of the richest natural sources of vitamin D. A 3-ounce serving of cooked salmon provides around 570 IU of vitamin D, covering about 95% of your daily needs. Wild-caught salmon tends ...
Then, starting in 1935, commercially produced tablets of yeast-extract vitamin B complex and semi-synthetic vitamin C became available. [8] This was followed in the 1950s by the mass production and marketing of vitamin supplements , including multivitamins , to prevent vitamin deficiencies in the general population. [ 8 ]
Vitamin C supplements among other dietary supplements at a US drug store. Vitamin C has a definitive role in treating scurvy, which is a disease caused by vitamin C deficiency. Beyond that, a role for vitamin C as prevention or treatment for various diseases is disputed, with reviews often reporting conflicting results.
One such example is natural versus organic. While natural products like the one listed as number 13 on today’s list are made with minimal processing, they can include synthetic additives, and ...
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