If you're one of the almost 25% of people in the U.S. who are low on vitamin D, your food choices could have a big impact. It ...

Vitamin D supplementation (D3 or 25[OH]D) was likely not significantly associated with protection against acute respiratory infection.

Vitamin D is essential for strong bones, muscles, and immunity. A deficiency can cause fatigue, weakness, or even depression, ...

Nutritionist Deepshikha Jain shared the 8 signs of vitamin D deficiency, including disturbed sleep, dry skin, and more. She ...

An in-depth look at Hepatitis D, why it’s so severe, and how new therapies bring hope for better treatment and prevention.