Cholecalciferol, also known as vitamin D3, is a type of vitamin D that is found in food and supplements. It is important for maintaining strong and healthy bones, as it helps the body absorb calcium from the diet. Cholecalciferol is produced in the skin when it is exposed to ultraviolet B (UVB) radiation from the sun, and it can also be obtained from certain foods, such as fatty fish, beef liver, a
nd egg yolks. It is also available as a dietary supplement in the form of tablets or capsules. Some people may need to take a cholecalciferol supplement if they do not get enough vitamin D from their diet or if they are at risk of vitamin D deficiency, such as older adults, people with limited sun exposure, and people with certain medical conditions.
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