Homosexuality
Homosexuality has shaped human societies, laws, bodies of art, and medical classifications for as long as written records exist. An 1868 letter from Austrian-born novelist Karl-Maria Kertbeny to Karl Heinrich Ulrichs may have introduced the word "homosexual" into print for the first time, and Kertbeny was writing not to celebrate a new identity but to argue against a Prussian anti-sodomy law. That single act of naming would set in motion a century and a half of reclassification, reclamation, and legal struggle. What does science actually say about why sexual orientation develops? How did societies across six continents and several millennia treat same-sex desire? And how did a word coined in a private letter become the center of one of the defining civil rights movements of the modern world? Those are the questions this documentary sets out to answer.
Kertbeny coined the term "homosexual" from a Greek root, homos, meaning "same," paired with a Latin suffix. The Greek homos has no relation to the Latin homo meaning "man," a point worth noting because the conflation of the two has caused persistent confusion. In 1886, the psychiatrist Richard von Krafft-Ebing brought the word into mainstream medical discourse in his book Psychopathia Sexualis, and the simultaneous introduction of "heterosexual" gave Western culture a binary that shaped everything that followed. Krafft-Ebing's book reached both laymen and doctors, and the two terms rapidly displaced older vocabulary.
The word lesbian traces a different path. It derives from Lesbos, the Greek island where the poet Sappho wrote about her emotional and romantic relationships with women. Later Greeks counted Sappho among the nine canonical lyric poets, and the adjectives Sapphic and Lesbian were applied to female homosexuality from the 19th century onward. The word gay traveled yet another route: originally embraced by homosexual men and women as an affirmative term associated with liberation, it entered pejorative use among younger people in the early 2000s, a reversal that illustrates how rapidly language around sexuality can shift.
Many modern style guides in the United States advise against using "homosexual" as a noun, partly because of its clinical history and partly because the word emphasizes sexual behavior rather than romantic feeling. The initialism LGBT, combining the first letters of lesbian, gay, bisexual, and transgender, emerged as a more inclusive alternative. Some pejorative terms such as "queer" began to be reclaimed as positive words beginning in the 1990s, appearing in academic fields like queer theory and in popular television.
The oldest possible record of a same-sex couple comes from ancient Egypt. The pair Khnumhotep and Niankhkhnum, who lived around 2400 BCE, are depicted in a nose-kissing position, described by scholars as the most intimate pose in Egyptian art, and are portrayed surrounded by what appear to be their heirs. Historians and anthropologists caution, however, against reading modern concepts of sexual orientation onto ancient relationships, because the same acts may have carried entirely different meanings in different cultural contexts.
In China, same-sex love has been recorded since approximately 600 BCE, and was known by a range of poetic euphemisms including "the passions of the cut peach." Writings from the Liu Song dynasty by Wang Shunu claimed that homosexuality was as common as heterosexuality in the late 3rd century. The novel Dream of the Red Chamber, widely regarded as a classic of Chinese literature, contains depictions of same-sex affection that strike modern readers as familiar. Opposition to homosexuality in China is traced by scholars to the medieval Tang dynasty (618-907), linked to the rising influence of Christian and Islamic values, with a more complete shift arriving during the Westernization of the late Qing dynasty.
In ancient Greece, pederasty, an erotic though often restrained relationship between a free adult male and a free adolescent, was valued for what were described as its pedagogic benefits. Plato in his Symposium has the figure of Phaedrus praise the institution, while in his later work Laws an Athenian stranger proposes banning sexual relationships between men entirely. Aristotle took a different view in his Nicomachean Ethics, stating that homosexuality in men comes about by nature for some and by habituation for others, and that no one for whom nature is the cause could be described as lacking self-control.
In Ancient Rome, sexuality was organized around roles rather than the sex of one's partner. Romans viewed the passive role as incompatible with the warrior ethos expected of free men. The emperor Hadrian (117-138) was renowned for his relationship with Antinous, a young man of low birth. It was the Christian emperor Theodosius I who, on the 6th of August 390, decreed that passive males be burned at the stake. Yet even after that law, taxes on establishments providing boys for homosexual sex continued to be collected until the end of the reign of Anastasius I in 518.
In Florence and Venice during the Renaissance, same-sex relationships were practiced by a considerable portion of the male population, yet the Officers of the Night court simultaneously prosecuted, fined, and imprisoned many of the same men. From the second half of the 13th century, death was the standard punishment for male homosexuality across most of Europe. The relationships of socially prominent figures, including King James I and the Duke of Buckingham, drew public commentary in anonymously authored street pamphlets of the era.
The first sustained written defense of homosexuality in English, Ancient and Modern Pederasty Investigated and Exemplified by Thomas Cannon, appeared in 1749 but was suppressed almost immediately. It included the line: "Unnatural Desire is a Contradiction in Terms; downright Nonsense. Desire is an amatory Impulse of the inmost human Parts." Around 1785, Jeremy Bentham wrote another defense, which remained unpublished until 1978. Executions for sodomy continued in England until 1835, with James Pratt and John Smith being the last Englishmen hanged on that charge.
Karl Heinrich Ulrichs, the same man who received Kertbeny's letter, became in 1867 the first self-proclaimed homosexual person to speak out publicly in defense of homosexuality, pleading at the Congress of German Jurists in Munich for a resolution urging the repeal of anti-homosexual laws. Between 1864 and 1880 he published a series of 12 tracts, collectively titled Research on the Riddle of Man-Manly Love. Havelock Ellis's Sexual Inversion, published in 1896, challenged theories that homosexuality was abnormal and insisted on its widespread presence and its association with intellectual and artistic achievement. That book contributed to the rise of Magnus Hirschfeld's Scientific-Humanitarian Committee, which campaigned from 1897 to 1933 against anti-sodomy laws in Germany.
In 1952, when the American Psychiatric Association published its first Diagnostic and Statistical Manual of Mental Disorders, homosexuality was listed as a disorder. Research funded by the National Institute of Mental Health almost immediately began subjecting that classification to critical scrutiny, and accumulated findings consistently failed to produce any empirical basis for treating homosexuality as a disorder. In 1973, the American Psychiatric Association removed homosexuality from the DSM, stating that it "implies no impairment in judgment, stability, reliability, or general social or vocational capabilities." The American Psychological Association adopted the same position in 1975, urging mental health professionals to take the lead in removing the stigma of mental illness associated with homosexual orientations.
The World Health Organization's ICD-9 (1977) still listed homosexuality as a mental illness. It was removed from the ICD-10, endorsed by the Forty-third World Health Assembly on the 17th of May 1990. The Chinese Society of Psychiatry removed homosexuality from its Chinese Classification of Mental Disorders in 2001, after five years of study.
Scientists today favor biological causes of sexual orientation, with considerably more evidence for nonsocial, biological factors than social ones, particularly for males. The prenatal hormonal theory proposes that variations in exposure to androgens and estrogens during critical periods of early brain development shape sexual orientation. Twin studies and molecular genetics indicate that genes likely play some role as well. The maternal immune hypothesis offers one specific mechanism: when a woman carries a male fetus, her immune system is exposed to male-specific antigens linked to the Y chromosome, and with each successive male pregnancy the immune response may strengthen, potentially affecting the developing fetal brain. This process has been proposed to underlie the fraternal birth order effect, the observation that the likelihood of a man being homosexual increases with the number of older biological brothers he has.
Major mental health organizations overwhelmingly reject conversion therapy as ineffective, scientifically unsupported, and potentially harmful. No major mental health professional organization has sanctioned efforts to change sexual orientation, and bodies including the American Psychiatric Association, the American Psychological Association, the Royal College of Psychiatrists, and the Australian Psychological Society have adopted policy statements cautioning the public about such treatments.
Decriminalization arrived at different speeds in different countries. Poland decriminalized homosexual acts in 1932, Denmark in 1933, Sweden in 1944, and England and Wales in 1967. In Canada, then-Minister of Justice Pierre Trudeau argued for reform with the declaration that "The state has no place in the bedrooms of the nation," and Parliament amended the Criminal Code in 1969 to remove criminal penalties for anal sex between consenting adults in private. In 1995, the Supreme Court of Canada held that sexual orientation is a protected characteristic under the equality clause of the Canadian Charter of Rights and Freedoms, and in 2005 Parliament enacted the Civil Marriage Act, legalizing same-sex marriage across the country. Canada was ranked first in the Gay Travel Index in 2018 and first in Asher and Lyric's LGBTQ+ Danger Index in a 2021 update.
In the United States, the Supreme Court ruled in 1986 in Bowers v. Hardwick that a state could criminalize sodomy. In 2003 it overturned that decision in Lawrence v. Texas. Same-sex marriage expanded from one state in 2004 to all 50 states in 2015. The Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act, signed in October 2009, made hate crime based on sexual orientation a federal crime. In 2018 India's Supreme Court overturned its 2013 ruling and legalized homosexual activity, reversing a position taken just five years earlier.
At the other end of the legal spectrum, ten countries or jurisdictions, all predominantly Islamic and governed under sharia law, have imposed the death penalty for homosexuality. These include Afghanistan, Iran, Brunei, Mauritania, Saudi Arabia, and several regions in Nigeria and Jubaland. In much of the Middle East, governments either criminalize homosexuality or deny its existence. Iranian President Mahmoud Ahmadinejad, speaking at Columbia University in 2007, asserted that there were no gay people in Iran.
Of the 26 countries that participate militarily in NATO, more than 20 permit openly gay, lesbian, and bisexual people to serve. Israel is the only country in the Middle East region that allows openly LGB people to serve in the military. The Trevor Project, a suicide prevention helpline for gay youth, was established following the 1998 airing on HBO of the Academy Award-winning short film Trevor, a reminder that legal progress and social acceptance do not always advance at the same pace.
Up Next
Common questions
When was the word homosexual first used in print?
The first known appearance of "homosexual" in print is found in an 1868 letter written by Austrian-born novelist Karl-Maria Kertbeny to Karl Heinrich Ulrichs, arguing against a Prussian anti-sodomy law. The psychiatrist Richard von Krafft-Ebing then brought the term into mainstream use in his 1886 book Psychopathia Sexualis.
When did the American Psychiatric Association stop classifying homosexuality as a mental disorder?
The American Psychiatric Association removed homosexuality from its Diagnostic and Statistical Manual of Mental Disorders in 1973, stating that it implies no impairment in judgment, stability, reliability, or vocational capabilities. The American Psychological Association adopted the same position in 1975, and the World Health Organization removed homosexuality from its ICD-10 on the 17th of May 1990.
What do scientists believe causes homosexuality?
Scientists favor biological causes of sexual orientation, with more evidence for nonsocial, biological factors than social ones, especially for males. Leading hypotheses include prenatal hormone exposure, genetic factors identified through twin and molecular genetics studies, and the maternal immune hypothesis, which proposes that a mother's immune response to male-specific antigens during successive male pregnancies may influence fetal brain development.
What is the oldest known record of a same-sex couple in history?
The ancient Egyptian pair Khnumhotep and Niankhkhnum, who lived around 2400 BCE, are commonly regarded as the first possible homosexual couple in recorded history. They are depicted in a nose-kissing position, described as the most intimate pose in Egyptian art, and are surrounded by what appear to be their heirs.
Where is homosexuality still illegal or punishable by death?
Ten countries or jurisdictions, all predominantly Islamic and governed under sharia law, impose the death penalty for homosexuality, including Afghanistan, Iran, Brunei, Mauritania, Saudi Arabia, and several regions in Nigeria and Jubaland. Many other governments in the Middle East and parts of Africa, Asia, the Caribbean, and the South Pacific also criminalize homosexual activity.
When did same-sex marriage become legal across the United States?
Same-sex marriage in the United States expanded from one state in 2004 to all 50 states in 2015, through a combination of state court rulings, state legislation, direct popular votes, and federal court rulings. Canada had legalized same-sex marriage nationally earlier, through the Civil Marriage Act enacted in 2005.
All sources
268 references cited across the entry
- 1Definitions Related to Sexual Orientation and Gender Diversity in APA DocumentsAmerican Psychological Association — 2015
- 2BookCross-Cultural Psychology: Critical Thinking and Contemporary Applications, Sixth EditionEric B. Shiraev et al. — Taylor & Francis — 2016
- 3BookThe Equal Curriculum: The Student and Educator Guide to LGBTQ HealthSpringer Nature — 2019
- 4Sexual orientation, homosexuality and bisexualityAmerican Psychological Association
- 6JournalSexual orientation and adolescentsBarbara L Frankowski — June 2004
- 7JournalA short review of biological research on the development of sexual orientationAnthony F. Bogaert et al. — 2020-03-01
- 8JournalSexual Orientation, Controversy, and ScienceBailey JM, Vasey PL, Diamond LM, Breedlove SM, Vilain E, Epprecht M — 2016
- 9BookGay, Straight, and the Reason Why: The Science of Sexual OrientationSimon LeVay — Oxford University Press — 2017
- 10BookThe Biology of HomosexualityJacques Balthazart — Oxford University Press — 2012
- 11JournalOrganizational Effects of Gonadal Hormones on Human Sexual OrientationAshlyn Swift-Gallant et al. — 2023
- 12Submission to the Church of England's Listening Exercise on Human SexualityThe Royal College of Psychiatrists
- 13'Therapies' to change sexual orientation lack medical justification and threaten healthPan American Health Organization
- 16NewsQueer Science: The Use and Abuse of Research into HomosexualityLeVay, Simon — 1996
- 181,500 animal species practice homosexuality.23 October 2006
- 19Bagemihl (1999)Bagemihl — 1999
- 21BookA Dictionary of True EtymologiesAdrian Room — Routledge & Kegan Paul — 1986
- 22BookA Student's Dictionary of PsychologyDavid A. Statt — Psychology Press — 2004
- 23Kertbeny, Károly Mária (1824-1882)Nikolai Endres — 2004
- 25JournalHomosexual Studies and Politics in the 19th Century: Karl Maria KertbenyFeray Jean-Claude et al. — 1990
- 28GLAAD Media Reference Guide - Glossary of Terms: LGBTQ24 February 2022
- 30AP Stylebook expands climate change guidance, adds plus symbol to LGBTQ+Angela Fu — March 23, 2023
- 31BookThe New York Times manual of style and usageAllan M Siegal et al. — Three Rivers Press — 2015
- 32How The Times gave 'gay' its own voice (again)David W Dunlap — June 19, 2017
- 33Index - G2024
- 34gay
- 35BookSexuality in Greek and Roman society and literature: a sourcebookMarguerite Johnson et al. — Routledge — 2005
- 36Lesbian
- 38BookSex in the ancient world from A to ZJohn G. Younger — Routledge — 2005
- 40BookThe American Heritage Dictionary of the English Language, Fourth EditionHoughton Mifflin — 2000
- 41FagRichard A. Spears — 2007
- 42BookThe Routledge Dictionary of Modern American Slang and Unconventional EnglishRoutledge — 25 July 2008
- 43Dictionary of Sexual TermsSex-lexis.com
- 44Queer Things from Old Closets: Libraries Gay and Lesbian Studies – Queer TheoryMarvin J. Taylor — Association of College and Research Libraries
- 45BookGays and the military: Joseph Steffan versus the United StatesMarc Wolinsky — Princeton University Press — 1993
- 46BookHomosexualitiesStephen O. Murray — University of Chicago Press — 2000
- 47NewsHow 'gay' became children's insult of choiceDenise Winterman — 18 March 2008
- 48BookHomosexuality in Greece and Rome: a Sourcebook of Basic DocumentsThomas K. Hubbard — University of California Press — 2003
- 49BookStraight: the surprisingly short history of heterosexualityHanne Blank — Beacon Press — 2012
- 50BookSame Sex, Different Cultures: Exploring Gay And Lesbian LivesGilbert H. Herdt — Westview Press — 1998
- 51BookMyth of the Modern HomosexualRictor Norton — Bloomsbury Academic — 2016
- 53BookHidden From History: Reclaiming the Gay and Lesbian PastJohn Boswell — Penguin Books — 1989
- 54JournalSeven Gay Texts: Biblical Passages Used to Condemn HomosexualityRobert K. Gnuse — SAGE Publications on behalf of Biblical Theology Bulletin Inc. — May 2015
- 55BookReligion and Spirituality in PsychiatryHarold G. Koenig et al. — Cambridge University Press — 2012
- 56BookRoman homosexuality : ideologies of masculinity in classical antiquityCraig A. Williams — 1999
- 57Foucault (1986)Foucault — 1986
- 58BookThe Complete World of Greek MythologyRichard Buxton — Thames and Hudson — 2004
- 59JournalReview of David M. Halperin, How to Do the History of Homosexuality.Hubbard Thomas K — 22 September 2003
- 60BookOne Hundred Years of Homosexuality: And Other Essays on Greek LoveDavid M. Halperin — Routledge — 1990
- 61BookThe Oxford Companion to PhilosophyRuse, Michael — Oxford University Press — 2005
- 62BookBoy Wives and Female Husbands: Studies of African HomosexualitiesStephen Murray — St. Martin's Press — 1998
- 63JournalSexual Inversion among the AzandeE. E. Evans-Pritchard — 1970
- 64BookSapphistries: a global history of love between womenLeila J. Rupp — Univ. Press — 2009
- 65Latin America: ColonialBen Pablo — 2004
- 66MexicoStephen Murray — glbtq.com — 2004
- 67BookInfamous Desire: Male Homosexuality in Colonial Latin AmericaPete Sigal — The University of Chicago Press — 2003
- 68BookDécadas del nuevo mundoPietro Martire d' Anghiera et al. — Maxtor — 2012
- 73'Sodomites' in Canada before 1841Hamish — 19 August 2007
- 74The End to the Death Penalty for "Sodomy" in CanadaHamish — 9 September 2007
- 76Egan v. Canada25 May 1995
- 77SPARTACUS Gay Travel Index 201925 February 2019
- 78FORBES LGBTQ+ Danger Index 201921 October 2020
- 79LGBTQ+ Travel Safety – 150 Best & Worst Countries Ranked (2021)8 November 2019
- 80BookDe los otros: intimacy and homosexuality among Mexican menJoseph Carrier — Columbia University Press — 1995
- 81Census statistics show quarter of California same-sex couples raising kidsMatt O'Brien — June 22, 2011
- 82Region Saw Increase In Same-Sex HouseholdsShannan Bowen — June 30, 2011
- 83Census 2010: One Quarter of Gay Couples Raising ChildrenSusan Donaldson James — June 23, 2011
- 84Minnesota Sees 50% Rise in Number of Gay CouplesDavid Peterson — July 14, 2011
- 85Census: Dutchess, Ulster Gay Households IncreaseCara Matthews — July 13, 2011
- 8787% Increase in Same-Sex Nevada Households Since 2000Shaun Knittel — August 11, 2011
- 88Gay, lesbian households increase in Okla.Justin Juozapavicius — July 14, 2011
- 89Spike In Number of City's Same-Sex CouplesRichard Yeh et al. — July 15, 2011
- 90BookThe fragile scholar: power and masculinity in Chinese cultureSong Geng — Hong Kong University Press — 2004
- 91BookPassions of the Cut SleeveBret Hinsch — University of California Press — August 10, 1990
- 92BookObsession: male same-sex relations in China, 1900–1950Wenqing Kang — Hong Kong University Press — 2009
- 93BookOceanic homosexualitiesStephen O. Murray et al. — Garland Pub — 1992
- 94Would ancient India have supported Section 377?Devdutt Pattanaik
- 95JournalKnowledge of ancient Hindu surgeons on Hirschsprung disease: evidence from Sushruta Samhita of circa 1200-600 bcVenkatachalam Raveenthiran — November 2011
- 97Hindu dieties and the third sexAmara Das Wilhelm
- 98Live Blog: Supreme Court Rules Gay Sex IllegalDecember 11, 2013
- 99BookThe Ramayana Of Valmiki Vol. 2Hari Prasad Tr. Shastri — Digital Library of India Item 2015.39881
- 100The Pre-Colonial History of Homosexuality in India: Why Love Is Not Western (Part I/III)Deepanshi Mehrotra — October 22, 2017
- 101The Vedic View on HomosexualityMalatimanjari — 2019-04-28
- 102Homosexuality and Theravada BuddhismA. L. De Silva
- 104NewsAncient India didn't think homosexuality was against natureManoj Mitta — 2009-06-27
- 105Homosexuality in ancient India: 10 instances2018-07-10
- 108JournalTranssexualism in Hindu MythologyShiva Prakash Srinivasan et al. — 2020
- 109BookLove And Friendship In Plato And AristotleA. W. Price — Clarendon Press — 2004
- 110BookSame-sex Desire and Love in Greco-Roman Antiquity and in the Classical Tradition of the WestBeert C. Verstraete — Psychology Press — 2005
- 111JournalThe Relationship between Achilles and Patroclus according to Chariton of AphrodisiasManuel Sanz Morales et al. — 2003
- 112LesbianDouglas Harper — 2001
- 113SapphicDouglas Harper — 2001
- 114BookGreek Lyric I:Sappho and Alcaeus1982
- 115Historical Views of Homosexuality: Roman EmpireThomas K. Hubbard — 2020-03-31
- 116Romans 1:23
- 119BookHomosexuality and the Western Christian traditionDerrick Sherwin Bailey — Archon Books — 1975
- 120BookEncyclopedia of violence, peace, & conflictLester R. Kurtz — Academic Press — 1999
- 121JournalOffences Against One's Self: Paederesty (Part 1)Jeremy Bentham et al. — Informa UK Limited — 4 August 1978
- 122Sexual InversionHavelock Ellis et al. — Arno Press — 1975
- 123BookBefore Homosexuality in the Arab-Islamic World, 1500–1800Khaled El-Rouayheb — The University of Chicago Press — 2005
- 124NewsThe five most improved places for gay tolerance17 September 2008
- 125MagazineWas Arafat Gay?James Kirchick
- 126NewsThe world's most gay-friendly places29 June 2011
- 127NewsGay Tel AvivAnthony Grant — 2 July 2010
- 128NewsIran 'must stop youth executions'Steven Eke — BBC News — 28 July 2005
- 130NewsDespite Denials, Gays Insist They Exist, if Quietly, in IranNazila Fathi — 30 September 2007
- 131BookSex and Eroticism in Mesopotamian LiteratureGwendolyn Leick — Routledge — 2013
- 132BookIslamic Homosexualities: Culture, History, and LiteratureWill Roscoe et al. — New York University Press — 1997
- 133JournalBertrand de Jouvenel's Philosophy of Individual LibertyKevin S. Honeycutt — 2022-06-01
- 135Homosexuality in the Ancient Near East, beyond EgyptBruce L. Gerig
- 136BookThe Man Who Would Be QueenBailey J — Joseph Henry Press — April 2003
- 137Ritualized Homosexuality in MelanesiaGilbert H. Herdt — University of California Press — 1984
- 138Kinsey's Heterosexual-Homosexual Rating ScaleThe Kinsey Institute
- 139BookEncyclopedia of Women in Today's WorldMary Zeiss Stange et al. — Sage Pubns — 2011
- 140JournalSexual Orientation, Controversy, and ScienceBailey et al. — 2016
- 141BookIntroduction to Psychology: Gateways to Mind and Behavior with Concept Maps and ReviewsDennis Coon et al. — Cengage Learning — 2012
- 142BookThe Changing Dynamics of Bisexual Men's LivesEric Anderson et al. — Springer Science & Business Media — 2016
- 143Appropriate Therapeutic Responses to Sexual OrientationAmerican Psychological Association — 2009
- 144Relationship Satisfaction and CommitmentEurekalert.org — 22 January 2008
- 145JournalSatisfaction and commitment in homosexual and heterosexual relationshipsS.M Duffy et al. — 1985
- 146JournalExpectations of romantic relationships: A comparison between homosexual and heterosexual men with regard to Baxter's criteriaBaccman Charlotte — 1999
- 147Coming Out: A JourneyUtahpridecenter.org
- 148Just the Facts About Sexual Orientation & Youth: A Primer for Principals, Educators and School PersonnelAmerican Academy of Pediatrics, American Counseling Association, American Association of School Administrators, American Federation of Teachers, American Psychological Association, American School Health Association, The Interfaith Alliance, National Association of School Psychologists, National Association of Social Workers, National Education Association — 1999
- 150OutingCaryn E Neumann — 2004
- 151The Dictionary of Bias-Free Usage: A Guide to Nondiscriminatory LanguageRosalie Maggio — Oryx Press — 1991
- 152Outing hypocrites is justifiedPeter Tatchell — 23 April 2007
- 153JournalEstimating the number of men who have sex with men in low and middle income countriesC. Caceres et al. — 2006
- 154BookBetween Men: HIV/STI Prevention For Men Who Have Sex With MenInternational HIV/AIDS Alliance — 2003
- 155JournalThe sexual behavior of men in the United StatesBilly JO, Tanfer K, Grady WR, Klepinger DH — 1993
- 156JournalPrevalence and patterns of same-gender sexual contact among menFay RE, Turner CF, Klassen AD, Gagnon JH — January 1989
- 157JournalThe prevalence of homosexual behavior and attraction in the United States, the United Kingdom and France: results of national population-based samplesSell RL, Wells JA, Wypij D — June 1995
- 159Key Demographic and Economic Characteristics of Same-Sex and Opposite-Sex Couples DifferedUnited States Census Bureau — 2022
- 160How Many People are Lesbian, Gay, Bisexual and Transgender?Gary Gates — The Williams Institute — April 2011
- 161Sexual Orientation and Health Among U.S. Adults: National Health Interview Survey, 2013Brian W Ward et al. — U.S. Department of Health and Human Services — July 15, 2014
- 162Special Report: 3.4% of U.S. Adults Identify as LGBTGary J. Gates et al. — 18 October 2012
- 163Gallup survey claims 3.4 percent in U.S. are LGBTCBS News — 18 October 2012
- 164New survey: 3.4% of U.S. adults are LGBTSharon Jayson — 19 October 2012
- 165In U.S., Estimate of LGBT Population Rises to 4.5%Frank Newport — 22 May 2018
- 166JournalDemographics of the Gay and Lesbian Population in the United States: Evidence from Available Systematic Data SourcesDan Black et al. — 2000
- 167JournalGay Is Okay With APA—Forum Honors Landmark 1973 EventsL. Lamberg — 1998
- 168Appropriate Therapeutic Responses to Sexual OrientationAmerican Psychological Association — 2009
- 169Stop discrimination against homosexual men and womenWorld Health Organisation – Europe — 17 May 2011
- 171Homophobic stigma – A community causeMarc Shoffman — 17 May 2006
- 172Homosexuality Not an Illness, Chinese SayMarch 8, 2001
- 173BookLesbian and Gay Studies: An Introductory, Interdisciplinary Approach
- 174Answers to Your Questions: For a Better Understanding of Sexual Orientation & HomosexualityAmerican Psychological Association
- 181JournalTo What Extent are Prenatal Androgens Involved in the Development of Male Homosexuality in Humans?Emmanouil Tasos — 2022-09-19
- 182BookEpigenetic Shaping of Sociosexual Interactions - from Plants to HumansTC Ngun et al. — 2014
- 183JournalFraternal birth order effect on sexual orientation explainedJacques Balthazart — 2018-01-09
- 184JournalHomosexuality as a Consequence of Epigenetically Canalized Sexual DevelopmentWilliam R. Rice et al. — 2012
- 185JournalGenetic factors predisposing to homosexuality may increase mating success in heterosexualsB Zietsch et al. — Elsevier BV — 2008
- 186NewsThe Evolutionary Mystery of HomosexualityDavid P. Barash — 19 November 2012
- 187BookThe goodness paradox: the strange relationship between virtue and violence in human evolutionRichard W. Wrangham — Vintage Books, a division of Penguin Random House LLC — 2019
- 191JournalThe effects of marriage, civil union, and domestic partnership laws on the health and well-being of childrenPawelski JG, Perrin EC, Foy JM, etal — July 2006
- 192JournalLegal recognition of same-sex relationships in the United States: a social science perspectiveHerek GM — September 2006
- 194Lesbian & Gay Parenting2005
- 196BookBorn Gay? The Psychobiology of Sex OrientationGlen Wilson et al. — London : Peter Owen — 2008
- 198UNAIDS: Men who have sex with menUNAIDS
- 199African American Community and HIV (Slide 14 mentions TG women)Cseneca Greenwood — East Bay AIDS Education and Training Center — 9 April 2004
- 200JournalMen who have sex with transgender women: challenges to category-based HIV preventionOperario D, Burton J, Underhill K, Sevelius J — January 2008
- 201JournalHIV-related tuberculosis in a transgender network—Baltimore, Maryland, and New York City area, 1998–2000Operario D, Burton J — April 2000
- 202JournalThe trouble with "MSM" and "WSW": erasure of the sexual-minority person in public health discourseYoung RM, Meyer IH — July 2005
- 203STI Epi Update: Oral Contraceptive and Condom UsePublic Health Agency of Canada — 23 April 1998
- 205JournalPrejudice, social stress, and mental health in lesbian, gay, and bisexual populations: conceptual issues and research evidenceMeyer, Ilan H. — September 2003
- 207Report of the Secretary's Task Force on Youth SuicideP. Gibson — United States Government Printing Office — 1989
- 208JournalVictimization Over the Life Span: A Comparison of Lesbian, Gay, Bisexual, and Heterosexual SiblingsKimberly F. Balsam — June 2005
- 209Gay, Lesbian, Bisexual, and Transgender SuicideKevin Caruso
- 21024-hour help for gay youthWilson, Jacque — CNN — 2 July 2008
- 211NewsIndia's Supreme Court turns the clock back with gay sex banAsokan Shyamantha — 11 December 2013
- 212NewsSupreme Court of India scraps ban on homosexuality with its judgment on Section 377.9 September 2018
- 213State-Sponsored Homophobia: A World Survey of Laws: criminalisation, protection and recognition of same-sex loveAengus Carroll et al. — May 2015
- 214NewsBrunei introduces death by stoning as punishment for gay sexHannah Ellis-Petersen — 28 March 2019
- 215NewsBrunei says it won't enforce gay death penalty after backlash6 May 2019
- 216BookState-Sponsored Homophobia 2019Lucas Ramón Mendos — ILGA — 2019
- 218NewsHere are the 10 countries where homosexuality may be punished by death16 June 2016
- 219Sexual Orientation and the LawJames M Donovan — William S. Hein & Co. — 2007
- 220Executive Order 13087 of May 28, 19982 June 1998
- 222State Hate Crime LawsJune 2006
- 223President Barack Obama Signs Hate Crimes Legislation into LawHRC — 28 October 2009
- 224First Presidency Message on Same-Gender MarriageNewsroom — 20 October 2004
- 225Defining Marriage Down – We need to protect marriage.Sam Brownback — 9 July 2004
- 226The Family: A Proclamation to the WorldLds.org — 23 September 1995
- 227NewsI'd like to say this, but it might land me in prisonMichael Gove — 24 December 2002
- 228NewsChristian group likens Tory candidate review to witch huntCBC News — 28 November 2007
- 229NewsEmployer's Dilemma: When Religious Expression and Gay Rights CrossJudith Moldover — 31 October 2007
- 230NewsCollision of religious and gay rights in the workplaceBob Ritter — January–February 2008
- 231NewsBishop loses gay employment case18 July 2007
- 232NewsCatholic adoption service stops over gay rightsMartin Beckford — 5 June 2008
- 233NewsCatholic Charities to halt adoptions over issue involving gaysSteve LeBlanc — 10 March 2006
- 234NewsChristian Horizons rebuked: Employer ordered to compensate fired gay worker, abolish code of conductGreg Mercer — 24 April 2008
- 235NewsBanned in Boston: The coming conflict between same-sex marriage and religious libertyMaggie Gallagher — 15 May 2006
- 236NewsChurch Group Complains of Civil Union PressureJill Capuzzo — 14 August 2007
- 237NewsGroup Loses Tax Break Over Gay Union IssueJill Capuzzo — 18 September 2007
- 238NewsLDS Church expresses disappointment in California gay marriage decisionCarrie Moore — 15 May 2008
- 240NewsAnti-LGBT views still prevail, global survey finds17 May 2016
- 241NewsReligious Belief and National Belonging in Central and Eastern Europe10 May 2017
- 242BookCross-National Public Opinion about Homosexuality: Examining Attitudes across the GlobeAmy Adamczyk — University of California Press — 2017
- 243JournalThe Impact of Discrimination Against The LGBTQ Community.Hazir Coleman — 2019
- 244Social exclusion of young lesbian, gay, bisexual and transgender (LGBT) people in Europe.Judit Takács — April 2006
- 247JournalInvestigating the Dynamics of the Iranian LGBT Community from Legal and Religious PerspectivesKameel Ahmady — 2023-05-11
- 248JournalLGBT IN IRAN: THE HOMOPHOBIC LAWS AND SOCIAL SYSTEM IN ISLAMIC REPUBLIC OF IRANKameel Ahmady — 2021
- 249JournalAhmady, Kameel. Narratives and minority: Stories from lesbian, gay and bisexual individuals in Iran: And an overview on the prevalence of LGB groups, Paper presented at the 2th International Conferences on Economics and Social Sciences Hosted by The Polytechnic of Guarda PORTUGAL, pp. 543–557, August 27 – 28, 2022.
- 250BookAhmady, Kameel Et al 2018: Forbidden Tale (A comprehensive study on lesbian, gay, bisexuals (LGB) in Iran). Mehri Publishing, London-UK.
- 251Charge #1 and specifications preferred by the Presbytery of Southern California against The Rev. C. Lee IronsPresbytery of Southern California of the Orthodox Presbyterian Church
- 252Religion and spirituality among LGBT AmericansBecka A. Alper and Asta Kallo — 22 August 2025
- 253Mental Health American, Bullying and Gay Youth"Mental Health America" formerly National Mental Health Association
- 254Half of young Dutch people reject homosexualityExpatica/COC
- 256Affidavit of Michael LambUnited States District Court for the District of Massachusetts — 2009
- 257Facts About Homosexuality and Child MolestationGregory M. Herek
- 258Victims
- 259News'Honor killings' target Turkey's LGBT communityCBS News — 12 October 2011
- 260Sei il disonore della famiglia" e accoltella il fratello gayDi Piero Russo — bari.repubblica.it — 5 August 2011
- 261Father confesses to killing his own son in landmark homosexual murder casehurriyetdailynews.com — 25 May 2013
- 262Morocco Situation of LGBT PersonsDanish Immigration Service
- 263NewsLove That Dare Not Squeak Its NameDinitia Smith — 7 February 2004
- 264MagazineBiological Exuberance: Animal Homosexuality and Natural DiversityMax Harrold — Regent Media — 16 February 1999
- 265'Catalogue of Life' reaches one million speciesDennis Gordon — National Institute of Water and Atmospheric Research — 10 April 2007
- 267JournalSame-sex sexual behavior and evolutionN. W. Bailey et al. — 2009
- 268JournalThe evolution of same-sex sexual behaviour in mammalsGómez, José M. — 3 October 2023
- 269NewsSame-Sex Behavior Evolved in Many Mammals to Reduce Conflict, Study SuggestsCarl Zimmer — 3 October 2023