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

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

Medically reviewed by Melissa Nieves, LND Key Takeaways It may be best to take vitamin D in the morning because taking it at ...

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 ...

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

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

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 ...