How much do you know about sexually transmitted diseases (STDs)? It turns out that most teens don't know much about STDs until they get one. And a lot of them are getting STDs. Half of all sexually active teens will catch chlamydia, herpes, or another STD by the time they turn 25.
WebMD talked to Gail Bolan, MD, director of the CDC's Division of STD Prevention, to find out more about STDs. She also has some important advice to help teens protect themselves every time they have sex.