Medically reviewed by Alex Yampolsky, PharmD Too much vitamin D can lead to toxicity, also known as vitamin D ...

Experts haven’t agreed on a number that defines a low vitamin D level. For most healthy people, the Office of Dietary Supplements states that a vitamin D serum (blood) level below 20 nanograms per ...

Vitamin D, the sunshine vitamin, is crucial for bones, muscles, mood, and immunity. While essential, excessive intake from ...

Nearly a quarter of Americans are estimated to have a deficiency in vitamin D. Are you one of them? A 2022 study of National Health and Nutrition Examination Surveys (NHANES) data estimated that about ...

For vitamin D to work, it needs to be absorbed in the intestine, carried through the bloodstream and converted by the liver ...

The days are shorter, you’re hibernating inside — and there’s a good chance you’re not getting enough vitamin D. About 40% of Americans aren’t. But in case you’re waiting for a sign from your body to ...

For a while vitamin D was looking like a bona fide health elixir. It was recognized a century ago as the cure for rickets, a childhood disease that causes weak and deformed bones. Then, in the early ...

Known as the sunshine vitamin, vitamin D is a fat-soluble vitamin necessary to support bone health, the immune system, and mental health. But there’s a catch: Roughly 50% of the population suffers ...