HPV (human papilloma virus) spreads through skin contact. Some types of HPV cause genital warts. Learn what to look for, how warts form, and how to treat and prevent HPV.

HIV weakens the parts of the body that fight off disease. It spreads through body fluids passed during sex or infected needles. When HIV causes severe health problems, it's called AIDS. There's no cure for HIV or AIDS. But treatment called antiretroviral therapy can help you stay healthier longer.

Herpes is a sexually transmitted disease (STD) or sexually transmitted infection (STI). It causes painful outbreaks of blisters and sores. It spreads through contact with an infected area—usually a sore on the genitals, rectum, or mouth.

Hepatitis is a disease that harms the liver through inflammation. Read on to learn more.

Gonorrhea is a sexually transmitted infection (STI). It spreads when body fluids are passed during sex. Infections can occur in the genitals, anus, and throat. You may have no symptoms. Or symptoms can be mild to very painful.

Here are answers to common questions about STIs.

Remember: Any kind of sex puts you at risk of sexually transmitted diseases (STDs). Look for signs of STDs on you and your partner. Get checked if you're not sure. And if you do have an STD, get treated! Tell your partner so he or she can get checked, too.

Chlamydia is an STI (sexually transmitted infection) that spreads when body fluids are passed during sex. Signs of chlamydia are often absent or hard to notice. Chlamydia can be cured.

If you're having sex, or thinking about having sex, you need to know about sexually transmitted diseases or STDs. STDs can cause serious health problems. And not all can be cured. But there are ways to protect yourself and others.

Deciding on bariatric surgery can be difficult. This is major surgery. If you qualify for bariatric surgery, you need to think about the possible risks and complications of having this surgery. Compare these with the risks and complications of not having the surgery.