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vitamin is an organic molecule (or a set of molecules closely related chemically, i.e. vitamers) that is an essential micronutrient that an organism needs in small quantities for the proper functioning of its metabolism. Essential nutrients cannot be synthesized in the organism, either at all or not in sufficient quantities, and therefore must be obtained through the diet. Vitamin C can be synthesized by some species but not by others; it is not a vitamin in the first instance but is in the second. The term vitamin does not include the three other groups of essential nutrients: minerals, essential fatty acids, and essential amino acids.[2] Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols. Some sources list fourteen vitamins, by including choline,[3] but major health organizations list thirteen: vitamin A (as all-trans-retinol, all-trans-retinyl-esters, as well as all-trans-beta-carotene and other provitamin A carotenoids), vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folic acid or folate), vitamin B12 (cobalamins), vitamin C (ascorbic acid), vitamin D (calciferols), vitamin E (tocopherols and tocotrienols), and vitamin K (phylloquinone and menaquinones).[4][5][6] 180.94.69.174 ( talk) 11:24, 25 July 2022 (UTC)
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The "Food sources" of Vitamin D2 and D3 has been swapped: Change source of D2 to "Fungi" Change source of D3 to "Fish, meat, offal, egg and dairy". Microbial Architect ( talk) 07:44, 25 April 2023 (UTC)
Done. Next time, WP:DOIT. Zefr ( talk) 15:54, 25 April 2023 (UTC)
Heat Exposure of Niacin must be yes at the table Vitamin#Effects_of_cooking. Voproshatel ( talk) 09:17, 29 September 2023 (UTC)
The daily norm of niacin and pantothenic acid does not exist, because their elimination half-life is <2 hours. Therefore only the hourly norm may be for niacin and pantothenic acid. Voproshatel ( talk) 10:01, 29 September 2023 (UTC)
This is the
talk page for discussing improvements to the
Vitamin article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find medical sources: Source guidelines · PubMed · Cochrane · DOAJ · Gale · OpenMD · ScienceDirect · Springer · Trip · Wiley · TWL |
Archives: 1, 2, 3, 4Auto-archiving period: 31 days |
Vitamin has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it. | |||||||||||||
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Current status: Good article |
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level-4 vital article is rated GA-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||||||||||||||||||||||||||
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This page has archives. Sections older than 31 days may be automatically archived by Lowercase sigmabot III when more than 4 sections are present. |
vitamin is an organic molecule (or a set of molecules closely related chemically, i.e. vitamers) that is an essential micronutrient that an organism needs in small quantities for the proper functioning of its metabolism. Essential nutrients cannot be synthesized in the organism, either at all or not in sufficient quantities, and therefore must be obtained through the diet. Vitamin C can be synthesized by some species but not by others; it is not a vitamin in the first instance but is in the second. The term vitamin does not include the three other groups of essential nutrients: minerals, essential fatty acids, and essential amino acids.[2] Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols. Some sources list fourteen vitamins, by including choline,[3] but major health organizations list thirteen: vitamin A (as all-trans-retinol, all-trans-retinyl-esters, as well as all-trans-beta-carotene and other provitamin A carotenoids), vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folic acid or folate), vitamin B12 (cobalamins), vitamin C (ascorbic acid), vitamin D (calciferols), vitamin E (tocopherols and tocotrienols), and vitamin K (phylloquinone and menaquinones).[4][5][6] 180.94.69.174 ( talk) 11:24, 25 July 2022 (UTC)
This
edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request. |
The "Food sources" of Vitamin D2 and D3 has been swapped: Change source of D2 to "Fungi" Change source of D3 to "Fish, meat, offal, egg and dairy". Microbial Architect ( talk) 07:44, 25 April 2023 (UTC)
Done. Next time, WP:DOIT. Zefr ( talk) 15:54, 25 April 2023 (UTC)
Heat Exposure of Niacin must be yes at the table Vitamin#Effects_of_cooking. Voproshatel ( talk) 09:17, 29 September 2023 (UTC)
The daily norm of niacin and pantothenic acid does not exist, because their elimination half-life is <2 hours. Therefore only the hourly norm may be for niacin and pantothenic acid. Voproshatel ( talk) 10:01, 29 September 2023 (UTC)