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These two forms of vitamin D are metabolized in the liver and stored as 25-hydroxyvitamin D. [4] Before biological use, the storage form must be converted into an active form. One common active form is 1,25-dihydroxyvitamin D. [4] The term vitamin D in this article means cholecalciferol, ergocalciferol, 25-hydroxyvitamin D, and the active forms ...
A meta-analysis involving 135,967 participants showed there is a significant relationship between vitamin E dosage and all-cause mortality, with dosages equal to or greater than 400 IU per day showing an increase in all-cause mortality. However, there is a decrease in all-cause mortality at lower doses, optimum being 150 IU per day. [32]
Vitamin D 2 is found in fungi and is produced by ultraviolet irradiation of ergosterol. [147] The vitamin D 2 content in mushrooms increases with exposure to ultraviolet light, [148] and is stimulated by industrial ultraviolet lamps for fortification. [147] The United States Department of Agriculture reports D 2 and D 3 content combined in one ...
Vitamin D is produced by the skin when it's exposed to sunlight, and just 10 minutes in the sun can produce up 10,000 units of vitamin D, according to Dr. Ouliana Ziouzenkova, an associate ...
Recommended amounts of vitamin D throughout the life cycle. Photo credit: Hearst Owned. Reference: National Institutes of Health, Office of Dietary Supplements.
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