What should I know about sexually transmitted diseases?
Sexually transmitted diseases (STDs) are passed from one person to another through intimate physical contact and from sexual activity including vaginal, oral, and anal sex. STDs are very common. However, if you have sex, you can lower your risk by using preventative measures (such as condoms). STDs do not always cause symptoms, so it is possible to have an infection and not know it. That is why it is important to get tested if you are having sex.