If people are sexually active and not using condoms, what is the possibility of them having a disease? – Kamyra* Unfortunately, it's quite likely. People who have sex without using condoms are at high risk of getting sexually transmitted diseases (STDs). It doesn't matter how many people the person has had sex with. Even if someone has only had one sexual partner, that partner could have a disease. Of course, the chances of getting STDs (also called sexually transmitted infections, or STIs) are even higher if a person has unprotected sex with lots of different partners. Many people who have STDs do not have obvious signs or symptoms. Because of this, they may believe they're "clean" and tell partners there's no need to use a condom. But that's not safe. For example, about 6 out of 10 young people with HIV don't know they're infected. So they risk passing the virus, which causes AIDS, on to others. Even getting treatment isn't a completely foolproof way to stop STDs from spreading. Some STDs (like trichomoniasis) can be treated so they go away, but other infections (like herpes or HPV) will always be in a person's body, even if that person has been treated. Plus, if someone has been treated for an STD like chlamydia and it goes away, that same person can still get re-infected if exposed to the STD another time. Anyone who is planning to have sex, or who has had sex, should be tested for STDs. And always use condoms for protection — every time. *Names have been changed to protect user privacy. Back to Articles Related Articles Condoms Condoms may be a good birth control option for couples who are responsible enough to use one each time and people who want protection against STDs. Read More Talking to Your Partner About Condoms Some people - even those who are having sex - are embarrassed by the topic of condoms. Here are some tips for talking about condoms with your partner. Read More STDs (Sexually Transmitted Diseases) You've probably heard lots of discouraging news about sexually transmitted diseases. The good news is that STDs can be prevented. Find out how to protect yourself. Read More Can You Get HIV From Having Sex With Someone Who Has AIDS? Find out what the experts have to say. Read More How Do I Find Out If a Guy I Had Sex With Has an STD? Find out what the experts have to say. Read More Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.