Same-sex sexual behavior has been extensively documented in non-human animals. Here we review the contexts in which it has been studied, focusing on case studies that have tested both adaptive and non-adaptive explanations for the persistence of same-sex sexual behavior. Researchers have begun to make headway unraveling possible evolutionary origins of these behaviors and reasons for their maintenance in populations, and we advocate expanding these approaches to examine their role as agents of evolutionary change.
Background: Methamphetamine-dependent gay and bisexual men (GBM) are at high risk for HIV transmission, largely due to drug-associated sexual risk behaviors. This project evaluated the efficacy of four behavioral drug abuse treatments for reducing methamphetamine use and sexual risk behaviors among this population.
Purpose: To identify factors related to human immunodeficiency virus (HIV) antibody testing among gay, lesbian, and bisexual youth. Methods: Self-reported demographics, risk behaviors, variables related to the Health Belief Model, and HIV testing data were collected at a conference for gay youth, as well as at the Gay and Lesbian Community Center in a Southeastern metropolitan area (n = 117). Results: About one third of participating youth who reported engaging in anal and vaginal sex had done so without a condom. In addition, one in four youth reported at least one other HIV risk factor.
Elsevier, The Journal of the Association of Nurses in AIDS Care : JANAC, Volume 11, November-December 2000
Bareback sex, or actively seeking unprotected anal intercourse is occurring in the gay male community. This represents a new phenomenon, different from previously identified "relapse" unsafe sexual behavior and poses an important HIV prevention problem. This article reviews the extant literature regarding bareback sex. The lay press and scientific literature are reviewed. Although discussion of issues surrounding bareback sex is abundant in the gay press, scientific literature regarding this phenomenon is nonexistent. The evidence-based literature addresses relapse to unsafe sexual behavior.
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