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  1. en.wikipedia.org › wiki › Vitamin_DVitamin D - Wikipedia

    Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and for many other biological effects. In humans, the most important compounds in this group are vitamin D 3 (cholecalciferol 2

  2. Epidemiology. History. Research. See also. References. External links. Vitamin D deficiency or hypovitaminosis D is a vitamin D level that is below normal. It most commonly occurs in people when they have inadequate exposure to sunlight, particularly sunlight with adequate ultraviolet B rays (UVB).

  3. Ergocalciferol is a secosteroid formed by a photochemical bond breaking of a steroid, specifically, by the action of ultraviolet light (UV-B or UV-C) on ergosterol, a form of provitamin D 2. [19] Like cholecalciferol, ergocalciferol is inactive by itself. It requires two hydroxylations to become active: the first in the liver by CYP2R1 to form ...

  4. en.wikipedia.org › wiki › Vitamin_CVitamin C - Wikipedia

    Vitamin C (also known as ascorbic acid and ascorbate) is a water-soluble vitamin found in citrus and other fruits, berries and vegetables. It is also a generic prescription medication and in some countries is sold as a non-prescription dietary supplement. As a therapy, it is used to prevent and treat scurvy, a disease caused by vitamin C ...

  5. The Felix M. Warburg House is a mansion at 1109 Fifth Avenue on the Upper East Side of Manhattan in New York City. It was built from 1907 to 1908 for the German-American Jewish financier Felix M. Warburg, in the Châteauesque style, and designed by C. P. H. Gilbert. After Warburg's death in 1937, his widow sold it to a real estate developer.

  6. A plot of normal distribution (or bell-shaped curve) where each band has a width of 1 standard deviation – See also: 68–95–99.7 rule. Cumulative probability of a normal distribution with expected value 0 and standard deviation 1 In statistics, the standard deviation is a measure of the amount of variation of a random variable expected about its mean.

  7. Bipolar disorder. Bipolar disorder is characterized by episodes of depression and hypomania or mania. Bipolar disorder, previously known as manic depression, is a mental disorder characterized by periods of depression and periods of abnormally elevated mood that each last from days to weeks. [4] [5] If the elevated mood is severe or associated ...

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