Milk is a primary source of vitamin D, but other foods, such as sardines and cod liver oil, are more concentrated sources of ...

Too much vitamin D, or vitamin D toxicity, happens due to a buildup of calcium in the blood (hypercalcemia), which can be ...

A new study found that vitamin D supplementation improved a key marker of biological aging—but it's probably too soon to rush to the drugstore. Here's what to know.

Lauren Silva, a freelance writer in New York City, believes in feeling good in your body and making that experience accessible to everyone across generations. The proof is in her ever-piling browser ...