Gay and bisexual men can take the following steps to reduce their risk of HIV infection:
Choose less risky sexual behaviors.
Anal sex is the riskiest type of sex for getting or transmitting HIV. Receptive anal sex (bottoming) is 13 times riskier for getting HIV than insertive anal sex (topping).
In general, oral sex has a low risk of transmitting HIV. However, it is hard to know the exact risk because a lot of people who have oral sex also have anal or vaginal sex. Other sexually transmitted infections (STIs), such as syphilis, herpes, gonorrhea, and chlamydia, can be transmitted during oral sex.
Limit your number of sex partners.
The more partners you have, the more likely you are to have a partner with poorly controlled HIV or to have a partner with an STI. Both factors can increase the likelihood of HIV transmission. Having an STI may create inflammation or open sores that make it easier for HIV to penetrate your skin. Syphilis, which is especially prevalent among men who have sex with men, can put you at high risk for HIV in the future.
Use condoms correctly every time you have sex.
Read this CDC fact sheet on the proper way to use condoms: Male (External) Condom Use.
Consider pre-exposure prophylaxis (PrEP).
Pre-exposure prophylaxis (PrEP) is HIV medicine taken to reduce the chances of getting HIV infection. PrEP is used by people who do not have HIV but are at high risk of being exposed to HIV. PrEP can be taken as an oral medicine (pills) or delivered as a long-acting injection once every two months. PrEP can be combined with other prevention methods, such as condoms, to reduce the risk of HIV even further. To learn more, read the HIVinfo fact sheet on Pre-Exposure Prophylaxis (PrEP).
Consider post-exposure prophylaxis (PEP).
Post-exposure prophylaxis (PEP) is the use of HIV medicines soon after a possible exposure to HIV to prevent becoming infected with HIV. For example, a person who is HIV negative may use PEP after having sex without a condom with a person who is HIV positive. To be effective, PEP must be started within 72 hours after a possible exposure to HIV.
PEP is for emergency situations. It is not a substitute for PrEP or the regular use of other HIV prevention methods.
To learn more, read the HIVinfo fact sheet on Post-Exposure Prophylaxis (PEP).
Get tested for HIV.
Whether you test HIV positive or HIV negative, in both cases you can take action to protect your health and prevent HIV transmission.