Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person's anus , or anus and rectum , for sexual pleasure. While anal sex is commonly associated with male homosexuality , research shows that not all gay men engage in anal sex and that it is not uncommon in heterosexual relationships. As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections STIs. Anal sex is considered a high-risk sexual practice because of the vulnerability of the anus and rectum. The anal and rectal tissues are delicate and do not provide lubrication like the vagina does , so they can easily tear and permit disease transmission, especially if a personal lubricant is not used. Strong views are often expressed about anal sex. It is controversial in various cultures, especially with regard to religious prohibitions. This is commonly due to prohibitions against anal sex among males or teachings about the procreative purpose of sexual activity. The abundance of nerve endings in the anal region and rectum can make anal sex pleasurable for men or women. Research indicates that anal sex occurs significantly less frequently than other sexual behaviors,  but its association with dominance and submission , as well as taboo , makes it an appealing stimulus to people of all sexual orientations.
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Try out PMC Labs and tell us what you think. Learn More. The aim of this study was to assess the prevalence and associations between anal intercourse and fecal incontinence. Fecal incontinence was defined as the loss of liquid, solid, or mucus stool occurring at least monthly on a validated questionnaire. A gender-specific sexual behavior questionnaire assessed any anal intercourse via an audio computer-assisted personal interview. Co-variables included: age, race, education, poverty income ratio, body mass index, chronic illnesses, depression, loose stool consistency Bristol Stool Scale types 6 or 7 , and reproductive variables in women.
Source: CDC. HIV Surveillance Report ; Download and Share This Infographic image icon. African American is a term often used for Americans of African descent with ancestry in North America. But trends varied for different groups of men. Taking HIV medicine every day can make the viral load undetectable. People who get and keep an undetectable viral load or stay virally suppressed can live a long and healthy life. These deaths could be from any cause. Nearly 1 in 7 men with HIV are unaware they have it. People who do not know they have HIV cannot get the medicine they need to stay healthy and prevent transmitting HIV to their partners.