When shopping for supplements, you should know the difference between vitamin D vs. D3. Here, experts break it all down, ...

While we know that vitamin D is crucial for our immune system, a new study suggests that its powers extend far further.

Plus, who might need it and how to get enough.

LOS ANGELES — Vitamin D is important for brain health, but this might be particularly true for women but doesn’t appear to have this beneficial effect in men, early research suggested. The large study ...

Scientists discovered that vitamin D2 supplements can lower levels of vitamin D3, the form the body uses most effectively. Unlike D2, vitamin D3 enhances the immune system’s first line of defense ...

A new meta-analysis is challenging long-standing assumptions about vitamin D supplements. New research from researchers at ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Your body needs a wide range of vitamins and nutrients to run efficiently, but there are some that are ...

A clinical trial linking vitamin D to better breast cancer outcomes when being treated with chemotherapy is giving women ...

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 ...

Taking vitamin D2 might lower the body's levels of the more efficient form of vitamin D, vitamin D3, according to new research from the University of Surrey, John Innes Centre and Quadram Institute ...