Safe sex is a sexual activity using methods or devices (such as condoms) to reduce the risk of transmitting or acquiring sexually transmitted infections (STIs), especially HIV. Unsafe or unprotected sex is in its contrast, in which the individual is indifferent to the recommendations such as using condoms or not using drugs and alcohol. In other words, unprotected sex is any type of sexual contact in which the couple has no knowledge about the health of their sexual partner. The problem arises because it is not simple to be aware of one’s health. To be more specific; about 90% of HIV-positive people are unaware of their own infection. On the other hand, negative diagnostic at the beginning of HIV infection cannot demonstrate a person’s health because the result is usually negative in the early stages of infection. In order to be aware of one’s health, his behavior needs to be heeded. Provided that one is aware of high-risk behaviors, he can better judge his and his sexual partner’s health. Having high-risk behaviors increases the risk of HIV and other sexually transmitted infections.
Condoms are the only means of contraception that prevent the transmission of HIV and sexually transmitted infections simultaneously.