Despite living in an age of abundant food options and supplements, certain vitamin and mineral deficiencies remain surprisingly common – and vitamin D is among the most widespread. Research suggests ...

Medically reviewed by Jamie Johnson, RDN Key Takeaways Too much vitamin D from supplements can lead to harmful blood levels, ...

When the days shorten and the sun sinks low in the sky, that familiar winter slump sets in. There's a fundamental reason for this seasonal fatigue: low levels of vitamin D—the "sunshine vitamin." ...

Few nutrients seem to get as much attention as vitamin D does. Taking a supplement has been touted as an effective way to slow overall aging and protect against heart disease and cancer, although ...

Before buying vitamin supplements, consider whether a doctor has recommended them, whether you have symptoms of deficiency or whether a diet change can solve the issue. Different vitamins behave ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Vitamin D is one of those nutrients that does a lot behind the scenes. It supports healthy aging, helps ...

Julia Ries Wexler is a writer focusing on all things health and wellness. She has over 10 years of experience in health journalism, and though she has written about pretty much every health topic ...

Low levels of vitamin D seem to raise your risk of heart attack but scientists are still figuring out why—and whether supplements might help protect you. Vitamin D is thought to play a protective role ...