Adolescents with a minority sexual orientation (e.g., lesbian, gay, and bisexual) are more likely to use substances than their heterosexual peers.
Elsevier, Trends in Ecology and Evolution, Volume 24, August 2009
Same-sex sexual behavior has been extensively documented in non-human animals.
Treatment of gender-identity disorders is guided by standards set forth by the World Professional Association for Transgender Health (WPATH).
Background: Methamphetamine-dependent gay and bisexual men (GBM) are at high risk for HIV transmission, largely due to drug-associated sexual risk behaviors.
Elsevier, Journal of Adolescent Health, Volume 26, April 2000
Purpose: To identify factors related to human immunodeficiency virus (HIV) antibody testing among gay, lesbian, and bisexual youth.
Elsevier,

The Journal of the Association of Nurses in AIDS Care : JANAC, Volume 11, November-December 2000

 The article highlights the emergence of bareback sex, which refers to actively seeking unprotected anal intercourse, as a new phenomenon in the gay male community.
Social stigmatization hinders the ability of gay adolescents to achieve the tasks of adolescence.

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