Most men who have sex with men have no fixed sexual partners. "Having multiple sexual partners" is often the main reason for contracting AIDS or other sexually transmitted diseases.

Second, the way of sexual intercourse

Men who have sex with men usually use GJ, which greatly increases the risk of HIV infection among men who have sex with men. Because the alkaline environment in rectum is very suitable for virus survival and reproduction, and the anorectal mucosa is thin and delicate, and there are abundant capillaries under it, it is easy to cause rupture and bleeding during sexual life, so that pathogens can invade from the rupture of anus or rectum and directly enter the blood.

Third, don't use condoms

Men who have sex with men do not pay attention to condom use, and the condom use rate is only about 40%. Even with condoms as an aid, virus infection cannot be completely avoided.

Fourth, the lubricant factor.

Because of the particularity of organ structure, gay men often need lubricants during homosexual sex; Because many lubricants contain mineral oil such as vaseline, it is easy to make latex brittle and easy to break, which increases the risk of HIV invading the human body.