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  2. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    [6] [7] Adolf Windaus received the Nobel Prize in Chemistry in 1928 for his work on the constitution of sterols and their connection with vitamins." [8] Present day, government food fortification programs in some countries and recommendations to consume vitamin D supplements are intended to prevent or treat vitamin D deficiency rickets and ...

  3. Previtamin D3 - Wikipedia

    en.wikipedia.org/wiki/Previtamin_D3

    Previtamin D 3 is an intermediate in the production of cholecalciferol (vitamin D 3).. It is formed by the action of UV light, most specifically UVB light of wavelengths between 295 and 300 nm, acting on 7-dehydrocholesterol in the epidermal layers of the skin.

  4. Cholecalciferol - Wikipedia

    en.wikipedia.org/wiki/Cholecalciferol

    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]

  5. Nearly a quarter of U.S. kids take vitamin supplements. Here ...

    www.aol.com/finance/nearly-quarter-u-kids...

    For these kids, she would suggest either a multivitamin or a selection of supplements, such as vitamin D, Omega-3 fatty acids, or vitamin C. Vitamins that are most likely to need supplementing ...

  6. Vitamin D and neurology - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_and_neurology

    Vitamin D (the inactive version) is mainly from two forms: vitamin D 3 and vitamin D 2. Vitamin D 3, or cholecalciferol, is formed in the skin after exposure to sunlight or ultra violet radiation or from D 3 supplements or fortified food sources. Vitamin D 2, or ergocalciferol, is obtained from D 2 supplements or fortified food sources. [3]

  7. Vitamin D deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_deficiency

    Mapping of several bone diseases onto levels of vitamin D (calcidiol) in the blood [6] Normal bone vs. osteoporosis. Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body.