Women who have sex with women Women who have sex with women Women who have sex with women (WSW) are women who engage in sexual activities with other women, whether or not they identify themselves as lesbian, bisexual, pansexual, heterosexual, or dispense with sexual identification altogether. The term "WSW" is often used in medical literature to describe such women as a group for clinical study, without needing to consider sexual self-identity. In terms of medical issues with regard to lesbian sexual practices, the sexual identification of women who consult a medical professional is usually not sought nor volunteered, due to the misconceptions and assumptions about sexuality
Men who have sex with men figures include victims of sexual abuse in addition to men who regularly or voluntarily have sex with men. In the U.S., among men aged 15 to 44, an estimated 6% have engaged in oral or anal sex with another man at some point in their lives, and about 2.9% have had at least one male sexual partner in the previous 12 months. Historically, anal sex has been popularly associated with male homosexuality and MSM. However, many MSM do not engage in anal sex, and may engage in oral sex, frotting or mutual masturbation instead. Among men who have anal sex