Vitamin D levels can be measured with a blood test. This test can indicate whether you have adequate levels, are at risk of a vitamin D deficiency, or have levels that are too high. Levels that are ...

In a recent systematic review and meta-analysis published in the journal Nutrients, researchers from Italy updated a systematic review and meta-analysis to examine whether low serum vitamin D ...

Taking one type of vitamin D supplement seems to cut the levels of another type that is more easily used by the body, which could affect our immune system. Our bodies create vitamin D when ultraviolet ...

Vitamin D supplements come in two main types: D2 and D3, and a new meta-analysis finds that taking D2 often lowers blood levels of D3. The researchers pooled data from randomized controlled trials and ...

With many Americans concerned about vitamin D deficiency, a new study finds a causal link between vitamin D deficiency and dementia, according to a paper published in The American Journal of Clinical ...

Vitamin D, often called the “sunshine vitamin,” is essential for maintaining overall health. It is unique among vitamins because the body can produce it when the skin is exposed to sunlight.

Vitamin D levels affect overall survival for melanoma (skin cancer) patients, a new study presented at the 31 st European Academy of Dermatology and Venereology (EADV) Congress has shown. Dermatology ...

In some cases, vitamin D deficiency may contribute to hair loss. Vitamin D helps hair follicles grow and work properly, and low levels may lead to hair loss or reduced hair growth. There isn’t much ...

Vitamin D3, a form of vitamin D, promotes strong bones, good immune health, and mental well-being. You can get vitamin D3 from fortified foods, eggs, and fatty fish — or by spending time in the sun.