You need teeth to talk and eat properly. From baby teeth to permanent teeth, find out all about them in this movie.

Can a doctor tell during a pelvic exam if you've had sex? Most of the time, a doctor can't tell if a girl has had sex just from a pelvic exam (and doctors don't usually do a pelvic exam unless there's ...

Compulsive exercise (sometimes called exercise addiction) happens when a person is driven to exercise too much. Injury, illness, going out with friends, or bad weather will not stop those who ...

Medically reviewed by: Larissa Hirsch, MDThis link opens in a new tab Learn About Cardiology (Heart Care) at Nemours Children's HealthThis link opens in a new tab The heart is an organ that’s a pump, ...

Learn About Behavioral Health (Psychology and Psychiatry) at Nemours Children's HealthThis link opens in a new tab ADHD stands for attention deficit hyperactivity disorder. People with ADHD have ...

Medically reviewed by: KidsHealth Medical ExpertsThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab The heart is a pump, usually ...

Medically reviewed by: KidsHealth Medical ExpertsThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab Did you know you have more ...

Medically reviewed by: Yamini Durani, MDThis link opens in a new tab Learn About Pathology (Lab Services) at Nemours Children's HealthThis link opens in a new tab By taking and testing a small sample ...

Medically reviewed by: Patrick C. Barth, MDThis link opens in a new tab Learn About Otolaryngology (Ear, Nose, & Throat Care) at Nemours Children's HealthThis link opens in a new tab A perforated ...

You can't control what other drivers do. But you can do things to lower your chances of being in a crash. This is what it means to be a defensive driver. Before you get behind the wheel, get into the ...

You've probably heard countless times how exercise is "good for you." But did you know that it can help you feel good too? Getting the right amount of exercise can rev up your energy levels and even ...

Medically reviewed by: Elana Pearl Ben-Joseph, MDThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab Smoking is one of the worst ...