More than 40 percent of the U.S. population is estimated to have a vitamin D deficiency, especially in regions with less year-round sun exposure. The vitamin, which is vital for the body’s absorption ...

‘Overdosing’ on vitamin D supplements is both possible and harmful, warn doctors in the journal BMJ Case Reports after they treated a man who needed hospital admission for his excessive vitamin D ...

Medically reviewed by Femi Aremu, PharmD Vitamin D3 helps your body absorb calcium, which is essential for healthy bones.Direct sunlight and foods like fatty fish and fortified dairy are good sources ...

'Overdosing' on vitamin D supplements is both possible and harmful, warn doctors in the journal BMJ Case Reports after they treated a man who needed hospital admission for his excessive vitamin D ...

Dear L.M.: Overdosing on vitamin D is dangerous. Last month, I had a patient who had elevated levels of calcium, which caused typical symptoms of confusion, vomiting and muscle weakness. She was found ...

MAYWOOD, Ill. -- A daily dose of vitamin D may just be what Chicagoans need to get through the long winter, according to researchers at Loyola University Chicago Marcella Niehoff School of Nursing ...

What Exactly Is Vitamin D? Despite its name, vitamin D isn't a vitamin—it's a hormone. Unlike traditional vitamins that we must obtain solely from food, our bodies can produce vitamin D naturally when ...

Please provide your email address to receive an email when new articles are posted on . In a survey of American Thyroid Association members, nearly half reported using preoperative vitamin D levels to ...

DEAR DR. ROACH: My son, on the advice of his doctor, has been taking high daily doses of vitamin A (100,000 IU) and vitamin D (50,000 IU). Since this has been explained to him as a cancer preventive ...