Vitamin D is an essential nutrient for your immune system, heart health, and more—but most Americans don't get enough of it.

A daily magnesium supplement alters the bacteria that produce vitamin D in the colon and could influence colorectal cancer ...

As resident nutrition and supplement expert at Which?, I've got the inside track on the vitamin D tips you need – and the ...

Eggs often steal the spotlight for vitamin D, yet plenty of other foods deliver even more of this essential nutrient. Vitamin ...

Vitamin D is an important nutrient but one that people tend to lack during the winter months. Vitamin D helps keep bones strong and works to support the body's immune system. The main way people get ...

One study found that vitamin D may have anticancer effects, which could help reduce colorectal cancer risk. Another piece of ...

Medically reviewed by Erika Prouty, PharmD If you take vitamin D supplements to treat any deficiencies, it's essential to ...

In the summertime, vitamin D levels might not be much of a concern for many runners, considering the time we spend exercising ...