Medically reviewed by Jamie Johnson, RDN Key Takeaways Too much vitamin D from supplements can lead to harmful blood levels, ...

Vitamin D is a nutrient that’s important for bone health, inflammation, and immune function. Vitamin D is also needed for red blood cell production. As a result, a low level may lead to anemia. It’s ...

When the days shorten and the sun sinks low in the sky, that familiar winter slump sets in. There's a fundamental reason for this seasonal fatigue: low levels of vitamin D—the "sunshine vitamin." ...

Add Yahoo as a preferred source to see more of our stories on Google. Vitamin D, often referred to as the "sunshine vitamin," becomes increasingly important as we age. Not only does it play a big role ...

Learn the best vitamin D-rich foods, how much they provide, and why combining food, sunlight, and supplements is often the most effective approach for optimal health.

Dear Dr. Roach: I had lab work done recently and received a panic call from the doctor’s office that my vitamin D level was 29 ng/mL. I needed to start 50,000 IU once a week for 12 weeks immediately.

A large study found that vitamin D and calcium supplements don't meaningfully reduce falls or fractures in most adults.

Millions of people take cholecalciferol, the standard vitamin D3 pill sold in virtually every pharmacy, expecting it to raise ...

Vitamin D plays a crucial role in bone health. FotoHelin/ Shutterstock When the days shorten and the sun sinks low in the sky, that familiar winter slump sets in. There’s a fundamental reason for this ...