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.

What Does A Drug Interaction Checker Do? The WebMD Drug Interaction Checker lets you enter the medicines, supplements, and foods you're taking to check for potential interactions. All content has been ...

There are two main types of eye doctors: ophthalmologists and optometrists. Confused about which is which and who does what? Here's a look at how they're different. Ophthalmologists and optometrists ...

Later, I learned that circadian rhythm disorders are very common in bipolar disorder. The condition disrupts the body’s sleep ...

A new drug combination cuts the risk of death in people with advanced prostate cancer by 40% over eight years, according to ...

A man may ejaculate 40 million to 150 million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an ...

Trusted, comprehensive information and resources for depression.

You turn off the lights and get yourself ready to snooze. Are you on your back, side, or stomach? Though there is no strong science connecting your sleep position to things like back pain, snoring, ...

It goes by many names: indigestion, heartburn, acid reflux, GERD. Whatever you call it, it happens when stomach juices flow in the wrong direction, back toward your throat. Find out from this WebMD ...

A piece of fruit can be a good way to satisfy your sweet tooth, but they’re not all created equal. WebMD shows you which fruits have the most -- and least -- sugar.

Being overly thirsty and having blurred vision are two signs of diabetes. Burnout may raise your chances of type 2 diabetes. If you're showing these or other symptoms of diabetes -- and you're having ...