While vitamins are essential for good health, it’s possible to have too much of a good thing. Unlike water-soluble vitamins that are typically excreted in urine, fat-soluble vitamins—and even some ...

Collagen. Probiotics. Every letter of vitamin under the sun. Your local drugstore is full of them—but how much do they ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." According to the U.S. Food and Drug Administration (FDA), approximately 75% of all Americans take at ...

Calcium builds and strengthens bones, while vitamin D helps your body absorb calcium. You need both calcium and vitamin D in ...

Vitamin D deficiency often sneaks up on people, even those who are careful about what they eat and always trying to make ...

In today's world, vitamin supplements are everywhere, and it seems like there's one for just about everything. But are all these pills and powders really necessary, or could some actually be doing ...

DEAR DR. ROACH: If I am taking vitamin A, what is a reasonable dose? I have seen reports that taking too much can cause liver damage, but nobody says how much is a problem. -- M.E.B. ANSWER: I think ...

Ask the average American man where his diet might be going wrong, and he’ll probably point to one too many burgers or a few extra beers. But while men overshoot on some nutrients like saturated fat ...

While people resort to supplements as an urgent fix to vitamin D deficiency, you should know that taking "too much vitamin D ...