Medically reviewed by Jonathan Purtell, RDN Key Takeaways Vitamin D2 supplements may lower blood levels of vitamin D3, which ...

"Taking too much vitamin D long term can lead to hypercalcemia, an excess of calcium in the body, which can cause problems ...

Scientists compared vitamin D2 and D3 supplements in new studies. Results show D3 may boost immunity more than D2.

People who are on the lower end of normal or just below normal may benefit from taking 5,000 to 10,000 IU of vitamin D, according to Cording. Others may do well with 1,000 IU, while Cording says those ...

When it comes to building strong, healthy bones, the emphasis on strength training has never been greater. Staying active is essential for bone health, but it’s important not to neglect the basics: ...

Vitamin D3, a form of vitamin D that we get from certain foods and exposure to sunlight, is an essential nutrient that plays a role in many bodily functions. This fat-soluble vitamin helps the body ...

Our editors independently select these products. Making a purchase through our links may earn Well+Good a commission Vitamin D. It’s often dubbed the “sunshine vitamin,” and it’s responsible for ...

Experts break down research that says vitamin D may prolong life by slowing the shortening of telomeres, protective caps on chromosomes that wear with age.

I t’s not hard to find a vitamin D–fortified food or beverage product. Companies have rolled out a steady stream of them over ...