Vitamin D is essential for bone and immune health, but too much can be dangerous. Experts warn that excess supplementation can overload the kidneys and lead to serious damage.

New clinical insights reveal how Vitamin D impacts your lipid profile, but experts warn that high doses could interfere with ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Dementia impacts millions of older adults, but researchers are still learning how, exactly, to prevent ...

DEAR DR. ROACH: These days, when vitamin D is recommended at every turn, I need to be sure I am taking the right dose. When I took 5,000 IU daily, my blood calcium levels increased and my doctor said ...

A study found that daily vitamin D supplements helped slow telomere shortening—the cellular process linked to aging and disease. Researchers believe its anti-inflammatory effects may protect DNA.

Winter means less time in the sun, but there are foods that can help you get the vitamin D your body needs to function.

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 ...