Learn how vitamin D benefits your body, and how to know if you're getting enough of this key nutrient or if you need more from sun exposure, your diet, or supplements.

Tuna is among the many types of fish that are hearty sources of vitamin D. In fact, a serving can provide over 5% of your ...

People with vitamin D deficiency are at greater risk of becoming depressed, and those with depression are more likely to be ...

Low levels of vitamin D seem to raise your risk of heart attack but scientists are still figuring out why—and whether ...

This winter, medical experts guide you through the latest diagnostic standards, the non-deficiency causes of fatigue, and the practical steps you can take ...

ALS is a debilitating paralytic disease characterized as the death of upper and lower motor neurons. Fortunately, ALS is ...