Add Yahoo as a preferred source to see more of our stories on Google. By now, you've likely been told to "eat your greens" for as long as you can remember—and therefore assume you understand why you ...

Without medical oversight, supplement-takers might accidentally get too much of a certain nutrient, to the point that it ...

Many people know vitamin D helps keep bones strong, but scientists are now studying how it may also affect memory, learning, and reaction speed. Vitamin D comes from sunlight, certain foods, and ...

It’s normal to occasionally forget where you left your keys, struggle to recall a new name or wonder if you’ve already taken your daily medication. “Everyone has memory slips now and again,” says ...

You walk into a room and forget why you came there. You can’t remember where you put your keys five minutes ago. You struggle to recall the name of someone you’ve known for years. Everyone around you ...