If you’re taking vitamin D but not seeing results on your lab tests, the problem might not be the vitamin itself—it could be how you’re eating it. Since vitamin D is a fat-soluble vitamin, it requires ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Vitamin D plays so many important roles in the body, yet it's difficult to get enough of it. If you're ...

Daylight Saving Time ends this weekend, which is a clear sign that winter will be here soon. With cold and flu season in full effect, plus seasonal affective disorder rearing its ugly head, our immune ...

If you're one of the almost 25% of people in the U.S. who are low on vitamin D, your food choices could have a big impact. It's hard to get enough vitamin D from food alone, but combining it with ...

Vitamin D is a workhorse vitamin. The strongest evidence suggests vitamin D may reduce respiratory infections, autoimmune diseases, and even risk of dying from cancer, says Edward Giovannucci, M.D., a ...