Taking vitamin D with certain medications may lead to dangerous side effects. See which common prescriptions require extra ...

Nearly a quarter of Americans are estimated to have a vitamin D deficiency. Why is that? A 2022 study of National Health and Nutrition Examination Surveys (NHANES) data estimated that about 22% of ...

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 ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Anyone who has gotten a urinary tract infection (UTI) knows that it's ...