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Vitamins are classified as either water-soluble or fat-soluble. In humans there are 13 vitamins: 4 fat-soluble (A, D, E, and K) and 9 water-soluble (8 B vitamins and vitamin C). Water-soluble vitamins dissolve easily in water and, in general, are readily excreted from the body, to the degree that urinary output is a strong predictor of vitamin ...
Vitamin B 12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. [2] It is one of eight B vitamins . It is required by animals, which use it as a cofactor in DNA synthesis , and in both fatty acid and amino acid metabolism . [ 3 ]
Because they are soluble in water, excess B vitamins are generally readily excreted, although individual absorption, use and metabolism may vary. [7] The elderly and athletes may need to supplement their intake of B 12 and other B vitamins due to problems in absorption and increased needs for energy production.
The antiscorbutic properties of certain foods were demonstrated in the 18th century by James Lind.In 1907, Axel Holst and Theodor Frølich discovered that the antiscorbutic factor was a water-soluble chemical substance, distinct from the one that prevented beriberi.
Biotin is a water-soluble B vitamin. Consumption of large amounts as a dietary supplement results in absorption, followed by excretion into urine as biotin. Consumption of biotin as part of a normal diet results in urinary excretion of biotin and biotin metabolites. [4]
Riboflavin, also known as vitamin B 2, is a water-soluble vitamin and is one of the B vitamins. [3] [4] [5] Unlike folate and vitamin B 6, which occur in several chemically related forms known as vitamers, riboflavin is only one chemical compound.
️ Biotin (Vitamin B7): This is a water-soluble vitamin that helps with the production of keratin, which is a protein that makes up your hair, skin, and nails. “While it primarily helps with ...
Vitamin D is a group of structurally related, ... Characteristics of osteomalacia are softening of the ... an inactive water-soluble compound that is excreted in bile.
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