High blood levels of lead can be harmful, and recent headlines suggest the heavy metal has gotten ingo our food supply. Knowledge is your best defense – here's what the science and the experts say.

Circadian researchers explain why a single hour can rattle your body, and the simple steps that streamline the switch.

Masturbation is a very natural and healthy part of childhood. And it can start at a younger age than you might think. "It's the beginning of a lifelong learning experience about their bodies and, ...