Doctors use the 25-hydroxy vitamin D test to monitor your vitamin D levels. Low levels can mean you need to spend more time outdoors or adjust your diet. But it can also occur with certain medical ...

There may be an association between vitamin D deficiency and a higher body weight. However, it’s not clear whether vitamin D supplementation may help prevent or reduce weight gain. Vitamin D is ...

Everyone knows vitamin D-- it's the nutrient we get from the sun. Vitamin D is important for several bodily functions, the main ones being bone and muscle strength and immune function. Still, about 35 ...

If the winter weather has you spending less time outside in the sun's rays, these foods can give you the vitamin D you need. Arielle Burton was an associate content manager on CNET's Performance ...

Dipa Kamdar does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Vitamin D is essential for many bodily processes, particularly the development of healthy bones. A 25-hydroxy vitamin D test can reveal whether the vitamin D levels in a person’s blood are within a ...