Women who have sex with women lesbian report feeling significantly different and isolated during adolescence; these emotions have been cited as appearing on average at 15 years old in lesbians and 18 years old in women who identify as bisexual. On the whole, women tend to work through developing a self-concept internally, or with other women with whom they are intimate. Women (heterosexual or otherwise) also limit who they divulge their sexual identities to and more often see being lesbian as a choice, as opposed to gay men, who work more externally and see being gay as outside their control. Anxiety disorders and depression are the
Men who have sex with men individuals who have compromised immune systems, especially HIV. Unprotected anal sex is a risk factor for formation of antisperm antibodies (ASA) in the recipient. In some people, ASA may cause autoimmune infertility. Many countries impose restrictions on donating blood for men who have or have had sex with men, as well as their female sexual partners—see the maps. Most national standards require direct questioning regarding a donor's sexual history, but the length of deferral varies. Men who have sex with men Men who have sex with men (MSM), also known as males who have sex with males, are male persons