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.

A Verywell Health editor shares her experience with vitamin D deficiency and the impact that vitamin D supplements had on her ...

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

Sarah is an experienced writer and editor enthusiastic about helping readers live their healthiest and happiest lives. Before joining Forbes Health, Sarah worked as a writer for various digital ...

Taking vitamin supplements you might not need is not only pointless, but can be dangerous. If you're not deficient in a nutrient, your body can't use it as a supplement, registered nutritionist ...