Athletes call it "Vitamin I." Women with menstrual cramps depend upon it. But scientists are beginning to realize that ibuprofen may not be as benign as we thought. Here's when you should just say no.

“Other than the reproductive system, the cardiovascular system has the most differences between genders,” says one doctor. Learn these heart attack symptoms.

While the secret to eternal youth remains a mystery, the common characteristics of super seniors from around the world just might offer everyone some clues for living longer and stronger.