User:SocialHaze/Sandbox/Homosexuality

Homosexuality is romantic or sexual attraction or behavior among members of the same sex. As a sexual orientation, homosexuality refers to "an enduring pattern of or disposition to experience sexual, affectional, or romantic attractions primarily to" people of the same sex; "it also refers to an individual’s sense of personal and social identity based on those attractions, behaviors expressing them, and membership in a community of others who share them."

Homosexuality is one of the three main categories of sexual orientation, along with bisexuality and heterosexuality, within the heterosexual-homosexual continuum. The longstanding consensus of the behavioral and social sciences and the health and mental health professions is that homosexuality per se is an example of normal and positive variation in human sexual orientation. Currently the most common adjectives in use are lesbian for women and gay for men, though gay can refer to either men or women. The number of people who identify as gay or lesbian — and the proportion of people who have same-sex sexual experiences — are difficult for researchers to estimate reliably for a variety of reasons. In the modern West, major studies indicate a prevalence of 2% to 13% of the population. A 2006 study suggested that 20% of the population anonymously reported some homosexual feelings, although relatively few participants in the study identified themselves as homosexual. Homosexual behavior in animals is also widely encountered.

Etymology and usage


The word homosexual is a Greek and Latin hybrid with the first element derived from Greek ὁμός homos, 'same' (not related to the Latin homo, 'man', such as in Homo sapiens), thus connoting sexual acts and affections between members of the same sex, including lesbianism. Gay generally refers to male homosexuality, but may be used in a broader sense to refer to all LGBT people. In the context of sexuality, lesbian refers only to female homosexuality. The word "lesbian" is derived from the name of the Greek island Lesbos, where the poet Sappho wrote largely about her emotional relationships with young women.

The adjective homosexual describes behavior, relationships, people, orientation, etc. The adjectival form literally means "same sex", being a hybrid formed from Greek homo- (a form of homos "same"), and "sexual" from Medieval Latin sexualis (from Classical Latin sexus). Many modern style guides in the U.S. recommend against using homosexual as a noun, instead using gay man or lesbian. Similarly, some recommend completely avoiding usage of homosexual as it has a negative, clinical history and because the word only refers to one's sexual behavior (as opposed to romantic feelings) and thus it has a negative connotation. Gay and lesbian are the most common alternatives. The first letters are frequently combined to create the initialism LGBT (sometimes written as GLBT), in which B and T refer to bisexual and transgender people.

The first known appearance of homosexual in print is found in an 1869 German pamphlet by the Austrian-born novelist Karl-Maria Kertbeny, published anonymously, arguing against a Prussian anti-sodomy law. In 1879, Gustav Jager used Kertbeny's terms in his book, Discovery of the Soul (1880). In 1886, Richard von Krafft-Ebing used the terms homosexual and heterosexual in his book Psychopathia Sexualis, probably borrowing them from Jager. Krafft-Ebing's book was so popular among both layman and doctors that the terms "heterosexual" and "homosexual" became the most widely accepted terms for sexual orientation.

As such, the current use of the term has its roots in the broader 19th-century tradition of personality taxonomy.

Although early writers also used the adjective homosexual to refer to any single-sex context (such as an all-girls' school), today the term is used exclusively in reference to sexual attraction, activity, and orientation. The term homosocial is now used to describe single-sex contexts that are not specifically sexual. There is also a word referring to same-sex love, homophilia. Other terms include men who have sex with men or MSM (used in the medical community when specifically discussing sexual activity), homoerotic (referring to works of art), heteroflexible (referring to a person who identifies as heterosexual, but occasionally engages in same-sex sexual activities), and metrosexual (referring to a non-gay man with stereotypically gay tastes in food, fashion, and design). Pejorative terms in English include queer, faggot, fairy, poof, and homo. Beginning in the 1990s, some of these have been reclaimed as positive words by gay men and lesbians, as in the usage of queer studies, queer theory, and even the popular American television program Queer Eye for the Straight Guy. The word  occurs in many other languages without the pejorative connotations it has in English. As with ethnic slurs and racial slurs, however, the misuse of these terms can still be highly offensive; the range of acceptable use depends on the context and speaker. Conversely, gay, a word originally embraced by homosexual men and women as a positive, affirmative term (as in gay liberation and gay rights), has come into widespread pejorative use among young people.

Perspectives
Many pure and human scientific fields have elaborated opinions on homosexuality.

Biology
Biology has attempted to ascertain the origins of homosexuality in several ways. A disputed study links homosexuality with the Xq28 genetic marker. In 1995 Hamer found correlation between homosexuality and the genetic marker. In more recent studies it is demonstrated that brain response to male [putative pheromones] in homosexual male's [amygdala] is comparable to the response observed in heterosexual women; similarly, the brain response to female pheromones in homosexual women is comparable to the brain response observed in heterosexual men.

Medicine
Men who have sex with men (MSM) and women who have sex with women (WSW) refers to people who engage in sexual activity with others of the same sex regardless of how they identify themselves as many choose not to accept social identities as lesbian, gay and bisexual. These terms are often used in medical literature and social research to describe such groups for study, without needing to consider the issues of sexual self-identity. The terms are seen as problematic, however, because it "obscures social dimensions of sexuality; undermines the self-labeling of lesbian, gay, and bisexual people; and does not sufficiently describe variations in sexual behavior". MSM and WSW are sexually active with each other for a variety of reasons with the main ones arguably sexual pleasure, intimacy and bonding. In contrast to its benefits, sexual behavior can be a disease vector. Safe sex is a relevant harm reduction philosophy.

The American Psychological Association, American Psychiatric Association, and National Association of Social Workers stated in 2006: Currently, there is no scientific consensus about the specific factors that cause an individual to become heterosexual, homosexual, or bisexual — including possible biological, psychological, or social effects of the parents’ sexual orientation. However, the available evidence indicates that the vast majority of lesbian and gay adults were raised by heterosexual parents and the vast majority of children raised by lesbian and gay parents eventually grow up to be heterosexual.

The Royal College of Psychiatrists stated in 2007: Despite almost a century of psychoanalytic and psychological speculation, there is no substantive evidence to support the suggestion that the nature of parenting or early childhood experiences play any role in the formation of a person’s fundamental heterosexual or homosexual orientation. It would appear that sexual orientation is biological in nature, determined by a complex interplay of genetic factors and the early uterine environment. Sexual orientation is therefore not a choice.

The American Academy of Pediatrics stated in Pediatrics in 2004: Sexual orientation probably is not determined by any one factor but by a combination of genetic, hormonal, and environmental influences. In recent decades, biologically based theories have been favored by experts. Although there continues to be controversy and uncertainty as to the genesis of the variety of human sexual orientations, there is no scientific evidence that abnormal parenting, sexual abuse, or other adverse life events influence sexual orientation. Current knowledge suggests that sexual orientation is usually established during early childhood.

The main reasons that an individual develops a heterosexual, bisexual, gay, or lesbian orientation cited include genetic and environmental factors, likely in combination. Other factors that may play a role include prenatal hormone exposure, where hormones play a role in determining sexual orientation as they do with sex differentiation;  and prenatal stress on the mother. Biological explanations are becoming more favoured, based chiefly on genetics and prenatal exposure to hormones.

Psychology
Psychology was one of the first disciplines to study a homosexual orientation as a discrete phenomenon. The first attempts to classify homosexuality as a disease were made by the fledgling European sexologist movement in the late 19th century. In 1886 noted sexologist Richard von Krafft-Ebing listed homosexuality along with 200 other case studies of deviant sexual practices in his definitive work, Psychopathia Sexualis. Krafft-Ebing proposed that homosexuality was caused by either "congenital [during birth] inversion" or an "acquired inversion". In the last two decades of the 19th century, a different view began to predominate in medical and psychiatric circles, judging such behavior as indicative of a type of person with a defined and relatively stable sexual orientation. In the late 19th and early 20th centuries, pathological models of homosexuality were standard.

The American Psychological Association, the American Psychiatric Association, and the National Association of Social Workers state: In 1952, when the American Psychiatric Association published its first Diagnostic and Statistical Manual of Mental Disorders, homosexuality was included as a disorder. Almost immediately, however, that classification began to be subjected to critical scrutiny in research funded by the National Institute of Mental Health. That study and subsequent research consistently failed to produce any empirical or scientific basis for regarding homosexuality as a disorder or abnormality, rather than a normal and healthy sexual orientation. As results from such research accumulated, professionals in medicine, mental health, and the behavioral and social sciences reached the conclusion that it was inaccurate to classify homosexuality as a mental disorder and that the DSM classification reflected untested assumptions based on once-prevalent social norms and clinical impressions from unrepresentative samples comprising patients seeking therapy and individuals whose conduct brought them into the criminal justice system.

In recognition of the scientific evidence, the American Psychiatric Association removed homosexuality from the DSM in 1973, stating that “homosexuality per se implies no impairment in judgment, stability, reliability, or general social or vocational capabilities.” After thoroughly reviewing the scientific data, the American Psychological Association adopted the same position in 1975, and urged all mental health professionals “to take the lead in removing the stigma of mental illness that has long been associated with homosexual orientations.” The National Association of Social Workers has adopted a similar policy.

Thus, mental health professionals and researchers have long recognized that being homosexual poses no inherent obstacle to leading a happy, healthy, and productive life, and that the vast majority of gay and lesbian people function well in the full array of social institutions and interpersonal relationships.

The research and clinical literature demonstrate that same-sex sexual and romantic attractions, feelings, and behaviors are normal and positive variations of human sexuality. The longstanding consensus of the behavioral and social sciences and the health and mental health professions is that homosexuality per se is a normal and positive variation of human sexual orientation. The World Health Organization's ICD-9 (1977) listed homosexuality as a mental illness; it was removed from the ICD-10, endorsed by the Forty-third World Health Assembly on May 17, 1990. Like the DSM-II, the ICD-10 added ego-dystonic sexual orientation to the list, which refers to people who want to change their gender identities or sexual orientation because of a psychological or behavioral disorder. The Chinese Society of Psychiatry removed homosexuality from its Chinese Classification of Mental Disorders in 2001 after five years of study by the association. According to the Royal College of Psychiatrists "This unfortunate history demonstrates how marginalisation of a group of people who have a particular personality feature (in this case homosexuality) can lead to harmful medical practice and a basis for discrimination in society. There is now a large body of research evidence that indicates that being gay, lesbian or bisexual is compatible with normal mental health and social adjustment. However, the experiences of discrimination in society and possible rejection by friends, families and others, such as employers, means that some LGB people experience a greater than expected prevalence of mental health and substance misuse problems. Although there have been claims by conservative political groups in the USA that this higher prevalence of mental health difficulties is confirmation that homosexuality is itself a mental disorder, there is no evidence whatever to substantiate such a claim."

Most lesbian, gay, and bisexual people who seek psychotherapy do so for the same reasons as heterosexual people (stress, relationship difficulties, difficulty adjusting to social or work situations, etc.); their sexual orientation may be of primary, incidental, or no importance to their issues and treatment. Whatever the issue, there is a high risk for anti-gay bias in psychotherapy with lesbian, gay, and bisexual clients. Psychological research in this area has been relevant to counteracting prejudicial ("homophobic") attitudes and actions, and to the LGBT rights movement generally.

The appropriate application of affirmative psychotherapy is based on the following scientific facts :
 * Same-sex sexual attractions, behavior, and orientations per se are normal and positive variants of human sexuality; in other words, they are not indicators of mental or developmental disorders.
 * Homosexuality and bisexuality are stigmatized, and this stigma can have a variety of negative consequences (e.g., minority stress) throughout the life span (D’Augelli & Patterson, 1995; DiPlacido, 1998; Herek & Garnets, 2007; Meyer, 1995, 2003).
 * Same-sex sexual attractions and behavior can occur in the context of a variety of sexual orientations and sexual orientation identities (Diamond, 2006; Hoburg et al., 2004; Rust, 1996; Savin-Williams, 2005).
 * Gay men, lesbians, and bisexual individuals can live satisfying lives as well as form stable, committed relationships and families that are equivalent to heterosexual relationships in essential respects (APA, 2005c; Kurdek, 2001, 2003, 2004; Peplau & Fingerhut, 2007).
 * There are no empirical studies or peer-reviewed research that support theories attributing same-sex sexual orientation to family dysfunction or trauma (Bell et al., 1981; Bene, 1965; Freund & Blanchard, 1983; Freund & Pinkava, 1961; Hooker, 1969; McCord et al., 1962; D. K. Peters & Cantrell, 1991; Siegelman, 1974, 1981; Townes et al., 1976).

The American Psychological Association states "there are probably many reasons for a person's sexual orientation and the reasons may be different for different people", and says most people's sexual orientation is determined at an early age. Research into how sexual orientation in males may be determined by genetic or other prenatal factors plays a role in political and social debates about homosexuality, and also raises fears about genetic profiling and prenatal testing.

When it was first described in medical literature, homosexuality was often approached from a view that sought to find an inherent psychopathology as its root cause. Much literature on mental health and homosexual patients centered on their depression, substance abuse, and suicide. Although these issues exist among people who are non-heterosexual, discussion about their causes shifted after homosexuality was removed from the Diagnostic and Statistical Manual (DSM) in 1973. Instead, social ostracism, legal discrimination, internalization of negative stereotypes, and limited support structures indicate factors homosexual people face in Western societies that often adversely affect their mental health. Stigma, prejudice, and discrimination stemming from negative societal attitudes toward homosexuality lead to a higher prevalence of mental health disorders among lesbians, gay men, and bisexuals compared to their heterosexual peers. Evidence indicates that the liberalization of these attitudes over the past few decades is associated with a decrease in such mental health risks among younger LGBT people.

History
Societal attitudes towards same-sex relationships have varied over time and place, from expecting all males to engage in same-sex relationships, to casual integration, through acceptance, to seeing the practice as a minor sin, repressing it through law enforcement and judicial mechanisms, and to proscribing it under penalty of death.

In a detailed compilation of historical and ethnographic materials of Preindustrial Cultures, "strong disapproval of homosexuality was reported for 41% of 42 cultures; it was accepted or ignored by 21%, and 12% reported no such concept. Of 70 ethnographies, 59% reported homosexuality absent or rare in frequency and 41% reported it present or not uncommon."

In cultures influenced by Abrahamic religions, the law and the church established sodomy as a transgression against divine law or a crime against nature. The condemnation of anal sex between males, however, predates Christian belief. It was frequent in ancient Greece; "unnatural" can be traced back to Plato.

Many historical figures, including Socrates, Lord Byron, Edward II, and Hadrian, have had terms such as gay or bisexual applied to them; some scholars, such as Michel Foucault, have regarded this as risking the anachronistic introduction of a contemporary construction of sexuality foreign to their times, though others challenge this.

A common thread of constructionist argument is that no one in antiquity or the Middle Ages experienced homosexuality as an exclusive, permanent, or defining mode of sexuality. John Boswell has countered this argument by citing ancient Greek writings by Plato, which describe individuals exhibiting exclusive homosexuality.

Theology
Professor Michael King states: "The conclusion reached by scientists who have investigated the origins and stability of sexual orientation is that it is a human characteristic that is formed early in life, and is resistant to change. Scientific evidence on the origins of homosexuality is considered relevant to theological and social debate because it undermines suggestions that sexual orientation is a choice."

Homosexuality in Society
Homosexual relationships and acts have been admired as well as condemned throughout recorded history, depending on the form they took and the culture in which they occurred. Since the end of the 1800s, there has been a movement towards increased visibility, recognition and legal rights for homosexual people, including the rights to marriage and civil unions, adoption and parenting, employment, military service, and equal access to health care.

Public Health
According to the American Red Cross, men in the USA who have had sex with men after 1977 have an HIV prevalence sixty times higher than the general population. In the United States, and other countries, men who have sex with men are one of the groups excluded as blood donors "because they are, as a group, at increased risk for HIV, hepatitis B and certain other infections that can be transmitted by transfusion." The UK and many European countries have the same prohibition.

These safer sex recommendations are agreed upon by public health officials for women who have sex with women to avoid sexually transmitted infections (STIs):
 * Avoid contact with a partner’s menstrual blood and with any visible genital lesions.
 * Cover sex toys that penetrate more than one person’s vagina or anus with a new condom for each person; consider using different toys for each person.
 * Use a barrier (e.g., latex sheet, dental dam, cut-open condom, plastic wrap) during oral sex.
 * Use latex or vinyl gloves and lubricant for any manual sex that might cause bleeding.

These safer sex recommendations are agreed upon by public health officials for men who have sex with men to avoid sexually transmitted infections (STIs):
 * Avoid contact with a partner’s bodily fluids and with any visible genital lesions.
 * Use condoms for anal and oral sex.
 * Use a barrier (e.g., latex sheet, dental dam, cut-open condom, plastic wrap) during anal–oral sex.
 * Cover sex toys that penetrate more than one person with a new condom for each person; consider using different toys for each person and use latex or vinyl gloves and lubricant for any sex that might cause bleeding.

Gay and lesbian youth
Gay and lesbian youth bear an increased risk of suicide, substance abuse, school problems, and isolation because of a "hostile and condemning environment, verbal and physical abuse, rejection and isolation from family and peers". Further, LGB youths are more likely to report psychological and physical abuse by parents or caretakers, and more sexual abuse. Suggested reasons for this disparity are that (1) LGBT youths may be specifically targeted on the basis of their perceived sexual orientation or gender non-conforming appearance, and (2) that "risk factors associated with sexual minority status, including discrimination, invisibility, and rejection by family members...may lead to an increase in behaviors that are associated with risk for victimization, such as substance abuse, sex with multiple partners, or running away from home as a teenager." A 2008 study showed a correlation between the degree of rejecting behavior by parents of LGB adolescents and negative health problems in the teenagers studied: Higher rates of family rejection were significantly associated with poorer health outcomes. On the basis of odds ratios, lesbian, gay, and bisexual young adults who reported higher levels of family rejection during adolescence were 8.4 times more likely to report having attempted suicide, 5.9 times more likely to report high levels of depression, 3.4 times more likely to use illegal drugs, and 3.4 times more likely to report having engaged in unprotected sexual intercourse compared with peers from families that reported no or low levels of family rejection.

Crisis centers in larger cities and information sites on the Internet have arisen to help youth and adults. The Trevor Helpline, a suicide prevention helpline for gay youth, was established following the 1998 airing on HBO of the Academy Award winning short film Trevor.

Parenting
LGBT parenting is when lesbian, gay, bisexual, and transgender (LGBT) people are parents to one or more children, either as biological or non-biological parents. Gay men face options which include: "foster care, variations of domestic and international adoption, diverse forms of surrogacy (whether "traditional" or gestational), and kinship arrangements, wherein they might coparent with a woman or women with whom they are intimately but not sexually involved." LGBT parents can also include single people who are parenting; to a lesser extent, the term sometimes refers to families with LGBT children.

Many leading medical, psychological, and social welfare organizations have issued policies opposing restrictions on lesbian and gay parenting upon concluding, based on numerous studies, that children raised by gay and lesbian parents are as likely to be well-adjusted as children raised by heterosexual parents. There is a scientific consensus that the same factors affect the adjustment of children, whatever the sexual orientation of their parents. Empirical research demonstrates that the absence of male or female parent in the home does not impair a child’s development.

Development
The authors of a 2008 study stated "there is considerable evidence that human sexual orientation is genetically influenced, so it is not known how homosexuality, which tends to lower reproductive success, is maintained in the population at a relatively high frequency". They hypothesized that "while genes predisposing to homosexuality reduce homosexuals' reproductive success, they may confer some advantage in heterosexuals who carry them". Their results suggested that "genes predisposing to homosexuality may confer a mating advantage in heterosexuals, which could help explain the evolution and maintenance of homosexuality in the population". A 2009 study also suggested a significant increase in fecundity in the females related to the homosexual people from the maternal line (but not in those related from the paternal one).

Garcia-Falgueras and Swaab state in the abstract of their 2010 study, "The fetal brain develops during the intrauterine period in the male direction through a direct action of testosterone on the developing nerve cells, or in the female direction through the absence of this hormone surge. In this way, our gender identity (the conviction of belonging to the male or female gender) and sexual orientation are programmed or organized into our brain structures when we are still in the womb. There is no indication that social environment after birth has an effect on gender identity or sexual orientation."

Innate bisexuality (or predisposition to bisexuality) is a term introduced by Sigmund Freud, based on work by his associate Wilhelm Fliess, that expounds that all humans are born bisexual but through psychological development – which includes both external and internal factors – become monosexual, while the bisexuality remains in a latent state.

Lesbian narratives and awareness of their sexual orientation
Lesbians often experience their sexuality differently from gay men, and have different understandings about etiology than those derived from studies focused mostly on men. For information specific to female homosexuality, see Lesbianism.

In a U.S.-based 1970s mail survey by Shere Hite, lesbians self-reported their reasons for being lesbian. This is the only major piece of research into female sexuality that has looked at how women understand being homosexual since Kinsey in 1953. The research yielded information about women's general understanding of lesbian relationships and their sexual orientation.

Women talked about social conditioning, which made it "almost impossible for me to have a truly healthy sexual relationship with a man". Another woman stated that because of their conditioning " [ w ] omen are much more sensitive to other people's needs", and so " [ s ] ex is better with women physically and emotionally", stating she preferred the symmetries of power and aesthetic between women. Some talked about preferring women, " [ p ] ersonally, I like girls better, they are more tender and loving", and some went into how they found that emotional relationships with women were more satisfying than those with men, with women making more creative and versatile lovers. One woman reported it was easier for her "to give myself emotionally to a woman". A woman who had been a lesbian for two years said she found that sexual relationships with women were more pleasurable on both psychological and physical levels than with men; this was "because the women I've had sex with have been my friends first, which was never the case with men. Being friends sets up a trust that I think is essential for satisfying physical intimacy. Relating to another woman physically seems to me like the most natural thing in the world. You've already got a head start on knowing how to give her pleasure. Gentleness seems to be the key, and is the main difference between relating to men and women.'" Women talked about women making better sexual partners and that was a dominant theme: "I find women better lovers; they know what a woman wants and most of all there is an emotional closeness that can never be matched with a man. More tenderness, more consideration and understanding of feelings, etc." This was because men were perceived as unlibereated "sexually or emotionally or any other way", and lesbianism was perceived "as an alternative to abstinence" and to men generally. Men were perceived as usually juvenile, while a relationship with women was described as "more of a communion with self". Sex as well as relationships with women were seen as a way of achieving independence from men; " [ s ] ex with a woman means independence from men." Male sexual performance was another problem, " [ t ] wenty minutes for a man, at least an hour with a woman, usually more", as well as attention to the sexual needs of women who themselves "seem to have a more sustained energy level after orgasm, and are more likely to know and do something about it if I'm not satisfied". One understanding of the difference was that sex with women "is not an 'exchange' or a 'trade' or services", and not focused on orgasm, with "more kissing and holding" and "more concern for my pleasure", which was experienced as liberating. Sex with women was also seen as a political act; "I see lesbianism as putting all my energies (sexual, political social, etc.) into women. Sex is a form of comfort and to have sex indiscriminately with males is to give them comfort." .

Hite is more concerned with what respondents say than quantifiable data. She found the two most significant differences between respondents' experience with men and women were the focus on clitoral stimulation, and more emotional involvement and orgasmic responses. Since Hite carried out her study she has acknowledged that some women may have chosen the political identity of a lesbian. Julie Bindel, a UK journalist, reaffirmed that "political lesbianism continues to make intrinsic sense because it reinforces the idea that sexuality is a choice, and we are not destined to a particular fate because of our chromosomes." as recently as 2009.

Sexual orientation, sexual identity, sexual behavior
The American Psychological Association, the American Psychiatric Association, and the National Association of Social Workers state: Sexual orientation refers to an enduring pattern of or disposition to experience sexual, affectional, or romantic attractions primarily to men, to women, or to both sexes. It also refers to an individual’s sense of personal and social identity based on those attractions, behaviors expressing them, and membership in a community of others who share them. Although sexual orientation ranges along a continuum from exclusively heterosexual to exclusively homosexual, it is usually discussed in terms of three categories: heterosexual (having sexual and romantic attraction primarily or exclusively to members of the other sex), homosexual (having sexual and romantic attraction primarily or exclusively to members of one’s own sex), and bisexual (having a significant degree of sexual and romantic attraction to both men and women). Sexual orientation is distinct from other components of sex and sexuality, including biological sex (the anatomical, physiological, and genetic characteristics associated with being male or female), gender identity (the psychological sense of being male or female), and social gender role (adherence to cultural norms defining feminine and masculine behavior).

Sexual orientation is commonly discussed as a characteristic of the individual, like biological sex, gender identity, or age. This perspective is incomplete because sexual orientation is always defined in relational terms and necessarily involves relationships with other individuals. Sexual acts and romantic attractions are categorized as homosexual or heterosexual according to the biological sex of the individuals involved in them, relative to each other. Indeed, it is by acting – or desiring to act – with another person that individuals express their heterosexuality, homosexuality, or bisexuality. This includes actions as simple as holding hands with or kissing another person. Thus, sexual orientation is integrally linked to the intimate personal relationships that human beings form with others to meet their deeply felt needs for love, attachment, and intimacy. In addition to sexual behavior, these bonds encompass nonsexual physical affection between partners, shared goals and values, mutual support, and ongoing commitment.

Consequently, sexual orientation is not merely a personal characteristic that can be defined in isolation. Rather, one’s sexual orientation defines the universe of persons with whom one is likely to find the satisfying and fulfilling relationships that, for many individuals, comprise an essential component of personal identity.

Fluidity of orientation
The American Psychiatric Association (APA) has stated "some people believe that sexual orientation is innate and fixed; however, sexual orientation develops across a person’s lifetime". In a joint statement with other major American medical organizations, the APA says that "different people realize at different points in their lives that they are heterosexual, gay, lesbian, or bisexual". A report from the Centre for Addiction and Mental Health states: "For some people, sexual orientation is continuous and fixed throughout their lives. For others, sexual orientation may be fluid and change over time". One study has suggested "considerable fluidity in bisexual, unlabeled, and lesbian women's attractions, behaviors, and identities".

Gender and fluidity
In a 2004 study, the female subjects (both gay and straight women) became sexually aroused when they viewed heterosexual as well as lesbian erotic films. Among the male subjects, however, the straight men were turned on only by erotic films with women, the gay ones by those with men. The study's senior researcher said that women's sexual desire is less rigidly directed toward a particular sex, as compared with men's, and it's more changeable over time.

Gender identity
The earliest writers on a homosexual orientation usually understood it to be intrinsically linked to the subject's own sex. For example, it was thought that a typical female-bodied person who is attracted to female-bodied persons would have masculine attributes, and vice versa. This understanding was shared by most of the significant theorists of homosexuality from the mid 19th to early 20th centuries, such as Karl Heinrich Ulrichs, Richard von Krafft-Ebing, Magnus Hirschfeld, Havelock Ellis, Carl Jung and Sigmund Freud, as well as many gender variant homosexual people themselves. However, this understanding of homosexuality as sexual inversion was disputed at the time, and through the second half of the 20th century, gender identity came to be increasingly seen as a phenomenon distinct from sexual orientation.

Transgender and cisgender people may be attracted to men, women or both, although the prevalence of different sexual orientations is quite different in these two populations (see sexual orientation of transwomen). An individual homosexual, heterosexual or bisexual person may be masculine, feminine, or androgynous, and in addition, many members and supporters of lesbian and gay communities now see the "gender-conforming heterosexual" and the "gender-nonconforming homosexual" as negative stereotypes. However, studies by J. Michael Bailey and K.J. Zucker have found that a majority of gay men and lesbians report being gender-nonconforming during their childhood years. Richard C. Friedman, in Male Homosexuality published in 1990, writing from a psychoanalytic perspective, argues that sexual desire begins later than the writings of Sigmund Freud indicate, not in infancy but between the ages of 5 and 10 and is not focused on a parent figure but on peers. As a consequence, he reasons, homosexual men are not abnormal, never having been sexually attracted to their mothers anyway.

Coming-out process
Many people who feel attracted to members of their own sex have a so-called "coming out" at some point in their lives. Generally, coming out is described in three phases. The first phase is the phase of "knowing oneself," and the realization or decision emerges that one is open to same-sex relations. This is often described as an internal coming out. The second phase involves one's decision to come out to others, e.g. family, friends, and/or colleagues. This occurs with many people as early as age 11, but others do not clarify their sexual orientation until age 40 or older. The third phase more generally involves living openly as an LGBT person. In the United States today, people often come out during high school or college age. At this age, they may not trust or ask for help from others, especially when their orientation is not accepted in society. Sometimes their own families are not even informed.

According to Rosario, Schrimshaw, Hunter, Braun (2006), "the development of a lesbian, gay, or bisexual (LGB) sexual identity is a complex and often difficult process. Unlike members of other minority groups (e.g., ethnic and racial minorities), most LGB individuals are not raised in a community of similar others from whom they learn about their identity and who reinforce and support that identity. Rather, LGB individuals are often raised in communities that are either ignorant of or openly hostile toward homosexuality."

Outing is the practice of publicly revealing the sexual orientation of a closeted person. Notable politicians, celebrities, military service people, and clergy members have been outed, with motives ranging from malice to political or moral beliefs. Many commentators oppose the practice altogether, while some encourage outing public figures who use their positions of influence to harm other gay people.

Social construct
Because a homosexual orientation is complex and multi-dimensional, some academics and researchers, especially in Queer studies, have argued that it is a historical and social construction. In 1976 the historian Michel Foucault argued that homosexuality as an identity did not exist in the eighteenth century; that people instead spoke of "sodomy", which referred to sexual acts. Sodomy was a crime that was often ignored but sometimes punished severely (see sodomy law).

The term homosexual is often used in European and American cultures to encompass a person’s entire social identity, which includes self and personality. In Western cultures some people speak meaningfully of gay, lesbian, and bisexual identities and communities. In other cultures, homosexuality and heterosexual labels don’t emphasize an entire social identity or indicate community affiliation based on sexual orientation. Some scholars, such as David Green, state that homosexuality is a modern Western social construct, and as such cannot be used in the context of non-Western male-male sexuality, nor in the pre-modern West.

Same-sex romance and relationships
People with a homosexual orientation can express their sexuality in a variety of ways, and may or may not express it in their behaviors. Some have sexual relationships predominately with people of their own gender identity, another gender, bisexual relationships or they can be celibate. Research indicates that many lesbians and gay men want, and succeed in having, committed and durable relationships. For example, survey data indicate that between 40% and 60% of gay men and between 45% and 80% of lesbians are currently involved in a romantic relationship. Survey data also indicates that between 18% and 28% of gay couples and between 8% and 21% of lesbian couples in the U.S. have lived together ten or more years. Studies have found same-sex and opposite-sex couples to be equivalent to each other in measures of satisfaction and commitment in romantic relationships, that age and gender are more reliable than sexual orientation as a predictor of satisfaction and commitment to a romantic relationship, and that people who are heterosexual or homosexual share comparable expectations and ideals with regard to romantic relationships.

Changing sexual orientation
There are no studies of adequate scientific rigor to conclude whether recent sexual orientation change efforts do work to change a person’s sexual orientation. Those efforts has been controversial due to tensions between the values held by some faith-based organizations, on the one hand, and those held by lesbian, gay, and bisexual rights organizations and professional and scientific organizations, on the other. The longstanding consensus of the behavioral and social sciences and the health and mental health professions is that homosexuality per se is a normal and positive variation of human sexual orientation. The American Psychological Association says that "most people experience little or no sense of choice about their sexual orientation". Some individuals and groups have promoted the idea of homosexuality as symptomatic of developmental defects or spiritual and moral failings and have argued that sexual orientation change efforts, including psychotherapy and religious efforts, could alter homosexual feelings and behaviors. Many of these individuals and groups appeared to be embedded within the larger context of conservative religious political movements that have supported the stigmatization of homosexuality on political or religious grounds.

No major mental health professional organization has sanctioned efforts to change sexual orientation and virtually all of them have adopted policy statements cautioning the profession and the public about treatments that purport to change sexual orientation. These include the American Psychiatric Association, American Psychological Association, American Counseling Association, National Association of Social Workers in the USA, the Royal College of Psychiatrists , and the Australian Psychological Society. The American Psychological Association and the Royal College of Psychiatrists expressed concerns that the positions espoused by NARTH are not supported by the science and create an environment in which prejudice and discrimination can flourish.

The American Psychological Association "encourages mental health professionals to avoid misrepresenting the efficacy of sexual orientation change efforts by promoting or promising change in sexual orientation when providing assistance to individuals distressed by their own or others’ sexual orientation and concludes that the benefits reported by participants in sexual orientation change efforts can be gained through approaches that do not attempt to change sexual orientation".

Homosexual behavior in animals
Homosexual behavior in animals refers to the documented evidence of homosexual, bisexual and transgender behavior in non-human animals. Such behaviors include sex, courtship, affection, pair bonding, and parenting. Homosexual and bisexual behavior are widespread in the animal kingdom: a 1999 review by researcher Bruce Bagemihl shows that homosexual behavior has been observed in close to 1500 species, ranging from primates to gut worms, and is well documented for 500 of them. Animal sexual behavior takes many different forms, even within the same species. The motivations for and implications of these behaviors have yet to be fully understood, since most species have yet to be fully studied. According to Bagemihl, "the animal kingdom [does] it with much greater sexual diversity -- including homosexual, bisexual and nonreproductive sex -- than the scientific community and society at large have previously been willing to accept."

Books

 * Adam, Barry (1987). The Rise of a Gay and Lesbian Movement, G. K. Hall & Co. ISBN 0805797149
 * Dover, Kenneth J., Greek Homosexuality,, Gerald Duckworth & Co. Ltd. 1979, ISBN 0-674-36261-6 (hardcover), ISBN 0-674-36270-5 (paperback)
 * d'Emilio, John Sexual Politics, Sexual Communities: The Making of a Homosexual Minority in the United States, 1940-1970, University of Chicago Press 1983, ISBN 0226142655
 * Roth, Norman. The care and feeding of gazelles - Medieval Arabic and Hebrew love poetry. IN: Lazar & Lacy. Poetics of Love in the Middle Ages, George Mason University Press 1989, ISBN 0913969257
 * 1990s
 * Bérubé, Allan, Coming out under Fire: The History of Gay Men and Women in World War Two, New York: MacMillan 1990, ISBN 0029031001
 * Hinsch, Bret, Passions of the Cut Sleeve: The Male Homosexual Tradition in China, The University of California Press, 1990, ISBN 0-520-06720-7
 * Rousseau, George, Perilous Enlightenment: Pre- and Post-Modern Discourses—Sexual, Historical, Manchester University Press 1991, ISBN 0719033012
 * 2000s
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * Hinsch, Bret, Passions of the Cut Sleeve: The Male Homosexual Tradition in China, The University of California Press, 1990, ISBN 0-520-06720-7
 * Rousseau, George, Perilous Enlightenment: Pre- and Post-Modern Discourses—Sexual, Historical, Manchester University Press 1991, ISBN 0719033012
 * 2000s
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * Hinsch, Bret, Passions of the Cut Sleeve: The Male Homosexual Tradition in China, The University of California Press, 1990, ISBN 0-520-06720-7
 * Rousseau, George, Perilous Enlightenment: Pre- and Post-Modern Discourses—Sexual, Historical, Manchester University Press 1991, ISBN 0719033012
 * 2000s
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * Rousseau, George, Perilous Enlightenment: Pre- and Post-Modern Discourses—Sexual, Historical, Manchester University Press 1991, ISBN 0719033012
 * 2000s
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * 2000s
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.
 * Gunther, Scott, "The Elastic Closet: A History of Homosexuality in France, 1942-present" Book about the history of homosexual movements in France (sample chapter available online). Palgrave-Macmillan, 2009. ISBN 023022105X.

Online articles

 * Burr, Chandler. Homosexuality and biology. The Atlantic, June 1997, . An overview of recent research in layman's language.
 * BBC News (Feb 1998): Fingerprints Study
 * BBC News (Apr 1999): Doubt cast on 'gay gene'
 * WebMD (March 2000): Pointing the Finger at Androgen as a Cause of Homosexuality
 * BBC News (Oct 2004): Genetics of homosexuality
 * James Davidson, London Review of Books, June 2, 2005, "Mr and Mr and Mrs and Mrs" – detailed review of The Friend, by Alan Bray, a history of same-sex marriage and other same-sex formal bonds

Homoseksualiteit مثلية جنسية Homosexualidá সমকামিতা Гомасексуалізм Гомасэксуальнасьць Homosexualität Homoseksualnost Heñvelrevelezh Хомосексуалност Homosexualitat Homosexualita Cyfunrywioldeb Homoseksualitet Homosexualität Homoseksuaalsus Ομοφυλοφιλία Homosexualidad Samseksemo Homosexualitate fa:همجنس‌گرایی Samkynd Homosexualité Co-ghnèitheachd Homosexualidade 동성애 Միասեռականություն समलैंगिकता Homoseksualnost Homoseksualitas Homosexualitate Samkynhneigð Omosessualità הומוסקסואליות ჰომოსექსუალობა Homoseksûelî Homophylophilia Homoseksualitāte Homosexualitéit Homoseksualumas Omosessualitæ Omosessüalità Homoszexualitás Хомосексуалност സ്വവർഗ്ഗരതി समलैंगिकता arz:هوموسكسواليه Kehomoseksualan Гомосекс Cuīlonyōtl Homoseksualiteit समलिँगी 同性愛 Homofili Homofili Omosexualitat Gomoseksuallik Omossessualità Homoseksualizm Homossexualidade Homosexualitate Гомосексуальность Homosexuality Omusissualità Homosexuality Homosexualita Homoseksualnost szl:Buzeranctwo Хомосексуалност Homoseksualnost Homoseksuaalisuus Homosexualitet Homoseksuwalidad தற்பால்சேர்க்கை స్వలింగ సంపర్కం รักร่วมเพศ Eşcinsellik Гомосексуалізм Đồng tính luyến ái 同性戀 Homo האמאסעקסואלוטעט 同性戀 同性戀

=Original Sandbox=

Homosexuality refers to sexual behavior with or attraction to people of the same sex, or to a homosexual orientation. As a sexual orientation, homosexuality refers to "an enduring pattern of or disposition to experience sexual, affectional, or romantic attractions primarily to" persons of the same sex; "it also refers to an individual’s sense of personal and social identity based on those attractions, behaviors expressing them, and membership in a community of others who share them." The exact proportion of the population that is homosexual is difficult to estimate reliably, but most recent studies place it at 2–7%.

Sexual orientation is also distinguished from other aspects of sexuality, "including biological sex (the anatomical, physiological, and genetic characteristics associated with being male or female), gender identity (the psychological sense of being male, female or other), and social gender role (adherence to cultural norms defining feminine and masculine behavior)." Etymologically, the word homosexual is a Greek and Latin hybrid with homos (often confused with the later Latin meaning of "man", as in Homo sapiens) deriving from the Greek word for same, thus connoting sexual acts and affections between members of the same sex, including lesbianism. In a narrow sense, gay refers to male homosexuality, but it often is used in its broadest sense, especially in media headlines and reports, to refer to homosexuality in general. Lesbian, however, always denotes female homosexuality.

There is much evidence of both acceptance and repression of homosexual behavior throughout recorded history. In the last few decades, there has been a trend towards increased visibility, recognition, and legal rights for homosexuals, including marriage and civil unions, parenting rights, and equal access to health care.

Homosexual behavior occurs among numerous non-human animals and particularly among social animals.

Overview
Homosexuality has been a feature of human culture since earliest history (see History section below). Generally and most famously in ancient Greece, certain forms of erotic attraction and sexual pleasure between males were often an ingrained, accepted part of the cultural norm. Particular sexual activities (such as anal sex in some cultures, or oral sex in others), however, were disapproved of, even as other aspects were accepted and admired. In cultures under the sway of Abrahamic religions, the law and the church established sodomy as a transgression against divine law, a "crime against nature" practiced by choice, and subject to severe penalties, up to capital punishment — often inflicted by means of fire so as to purify the unholy action. The condemnation of penetrative sex between males, however, predates Christian belief, as it was frequent in ancient Greece, whence the theme of action "against nature," traceable to Plato, originated.

In the last two decades of the 19th Century, a different view began to predominate in medical and psychiatric circles, judging such behavior as indicative of a type of person with a defined and relatively stable sexual orientation. Karl-Maria Kertbeny coined the term homosexual in 1869 in a pamphlet arguing against a Prussian anti-sodomy law. Richard von Krafft-Ebing's 1886 book Psychopathia Sexualis elaborated on the concept.

In 1897, British physician Havelock Ellis published similar views in his influential book Sexual Inversion. Although medical texts like these (written partly in Latin to obscure the sexual details) were not widely read by the general public, they did lead to the rise of Magnus Hirschfeld's Scientific Humanitarian Committee, which campaigned from 1897 to 1933 against anti-sodomy laws in Germany, as well as a much more informal, unpublicized movement among British intellectuals and writers, led by such figures as Edward Carpenter and John Addington Symonds.

In the course of the 20th Century, homosexuality became a subject of considerable study and debate in Western societies, especially after the modern gay rights movement began in 1969. Once viewed by authorities as a pathology or mental illness to be cured, homosexuality is now more often investigated as part of a larger impetus to understand the biology, psychology, politics, genetics, history and cultural variations of sexual practice and identity. The legal and social status of people who engage in homosexual acts or identify as gay or lesbian varies enormously across the world, and in some places remains hotly contested in political and religious debate.

Etymology and usage
The adjective homosexual describes behavior, relationships, people, orientation etc. The adjectival form literally means "same sex", being a hybrid formed from the Greek prefix homo- ("same"), and the Latin root sex. Many modern style guides in the U.S. recommend against using homosexual as a noun, instead using gay man or lesbian. Similarly, some recommend completely avoiding usage of homosexual as having a negative and discredited clinical history and because the word only refers to one's sexual behavior, and not to romantic feelings. Gay and lesbian are the most common alternatives. The first letters are frequently combined to create the initialism LGBT (sometimes written as GLBT), in which B and T refer to bisexuals and transgender people. These style guides are not always followed by mainstream media sources.

The first known appearance of homosexual in print is found in an 1869 German pamphlet by the Austrian-born novelist Karl-Maria Kertbeny, published anonymously. The prevalence of the concept owes much to the work of the German psychiatrist Richard Freiherr von Krafft-Ebing and his 1886 work Psychopathia Sexualis. As such, the current use of the term has its roots in the broader 19th century tradition of personality taxonomy. These continue to influence the development of the modern concept of sexual orientation, gaining associations with romantic love and identity in addition to its original, exclusively sexual meaning.

Although early writers also used the adjective homosexual to refer to any single-sex context (such as an all-girls' school), today the term is used exclusively in reference to sexual attraction and activity. The term homosocial is now used to describe single-sex contexts that are not specifically sexual. There is also a word referring to same-sex love, homophilia. Other terms include men who have sex with men or MSM (used in the medical community when specifically discussing sexual activity), homoerotic (referring to works of art), heteroflexible (referring to a person who identifies as heterosexual, but occasionally engages in same-sex sexual activities), and metrosexual (referring to a non-gay man with stereotypically gay tastes in food, fashion, and design). Pejorative terms in English include queer, faggot, fairy, poof, and homo. Beginning in the 1990s, some of these have been "reclaimed" as positive words by gay men and lesbians, as in the usage of queer studies, queer theory, and even the popular American television program Queer Eye for the Straight Guy. As with ethnic slurs and racial slurs, however, the misuse of these terms can still be highly offensive; the range of acceptable use depends on the context and speaker. Conversely, gay, a word originally embraced by homosexual men and women as a positive, affirmative term (as in gay liberation and gay rights), has come into widespread pejorative use among young people.

Sexuality
Homosexuality is a broad term which includes several aspects of same-sex sexuality, such as sexual orientation, sexual identity, and sexual behaviors.

Homosexual orientation
Homosexuality as a sexual orientation refers to "an enduring pattern of or disposition to experience sexual, affectional, or romantic attractions primarily to" people of the same sex; "it also refers to an individual’s sense of personal and social identity based on those attractions, behaviors expressing them, and membership in a community of others who share them." The exact proportion of the population that is homosexual is difficult to estimate reliably, but studies place it at 2–7%. It is distinguished from a bisexual or heterosexual orientation.

Researchers have looked into a variety of possible causes for a homosexual orientation, including biological influences, prenatal hormones, prenatal stress, fraternal birth order, and environmental influences. The American Psychiatric Association has stated "some people believe that sexual orientation is innate and fixed; however, sexual orientation develops across a person’s lifetime." However, the American Psychological Association has stated "most people experience little or no sense of choice about their sexual orientation."

Sexual identity
Homosexuality as a sexual identity refers to sexual identity as a gay or lesbian person. In a narrow sense, gay refers to male homosexuality, but it often is used in its broadest sense, especially in media headlines and reports, to refer to homosexuality in general. Lesbian, however, always denotes female homosexuality.

Sexual behavior


Homosexuality as a sexual behavior refers to sexual relationships between two people of the same-sex. Studies have found same-sex and opposite-sex couples to be equivalent to each other on measures of relationship satisfaction and commitment. Many lesbians and gay men form durable relationships. For example, survey data indicate that between 18% and 28% of gay couples and between 8% and 21% of lesbian couples in the U.S. have lived together 10 or more years.

Societal attitudes towards same-sex relationships vary over time and place, from expecting all males to engage in same-sex relationships, to casual integration, through acceptance, to seeing the practice as a minor sin, repressing it through law enforcement and judicial mechanisms, and to proscribing it under penalty of death.

Most nations do not impede consensual sex between unrelated persons above the local age of consent. Some jurisdictions further recognize identical rights, protections, and privileges for the family structures of same-sex couples, including marriage. Some nations mandate that all individuals restrict themselves to heterosexual relationships; that is, in some jurisdictions homosexual activity is illegal. Offenders face up to the death penalty in some fundamentalist Muslim areas such as Iran and parts of Nigeria. There are, however, often significant differences between official policy and real-world enforcement. See Violence against gays, lesbians, bisexuals, and the transgendered.

History
The lives of many historical figures, including Socrates, Alexander the Great, Lord Byron, Edward II, Hadrian, Julius Caesar, Michelangelo, Donatello, Leonardo DaVinci, and Christopher Marlowe included or were centered upon love and sexual relationships with people of their own sex. Terms such as gay or bisexual have been often applied to them; some, such as Michel Foucault, regard this as risking the anachronistic introduction of a contemporary construction of sexuality foreign to their times, though others challenge this.

A common thread of constructionist argument is that no one in antiquity or the Middle Ages experienced homosexuality as an exclusive, permanent, or defining mode of sexuality. John Boswell has countered this argument by citing ancient Greek writings by Plato, which describe individuals exhibiting exclusive homosexuality.

Africa
Though often ignored or suppressed by European explorers and colonialists, homosexual expression in native Africa was also present and took a variety of forms. Anthropologists Stephen Murray and Will Roscoe reported that women in Lesotho engaged in socially sanctioned "long term, erotic relationships," named motsoalle. E. E. Evans-Pritchard also recorded that male Azande warriors (in the northern Congo) routinely took on boy-wives between the ages of twelve and twenty, who helped with household tasks and participated in intercrural sex with their older husbands. The practice had died out by the early 20th century, after Europeans had gained control of African countries, but was recounted to Evans-Pritchard by the elders he spoke to.

Americas


Among indigenous peoples of the Americas prior to European colonization, the most common form of same-sex sexuality seems to center around the figure of the Two-Spirit individual. Such people seem to have been recognized by the majority of tribes, each of which had its particular term for the role. Typically the two-spirit individual was recognized early in life, was given a choice by the parents to follow the path, and if the child accepted the role then the child was raised in the appropriate manner, learning the customs of the gender it had chosen. Two-spirit individuals were commonly shamans and were revered as having powers beyond those of ordinary shamans. Their sexual life would be with the ordinary tribe members of the same sex. Male two-spirit people were prized as wives because of their greater strength and ability to work.

Homosexual and transgender individuals were also common among other pre-conquest civilizations in Latin America, such as the Aztecs, Mayans, Quechas, Moches, Zapotecs, and the Tupinambá of Brazil. The Spanish conquerors were horrified to discover "sodomy" openly practiced among native peoples, and attempted to crush it out by subjecting the berdaches (as the Spanish called them) under their rule to severe penalties, including public execution and burning. In a famous example of cruelty against homosexuals, in 1513 the conquistador Vasco Núñez de Balboa "discovered that the village of Quarequa [in modern-day Panama] was stained by the foulest vice. The king’s brother and a number of other courtiers were dressed as women, and according to the accounts of the neighbours shared the same passion. Vasco ordered forty of them to be torn to pieces by dogs. The Spaniards commonly used their dogs in fighting against these naked people, and the dogs threw themselves upon them as though they were wild boars on timid deer."

East Asia
In East Asia, same-sex love has been referred to since the earliest recorded history. Early European travelers were taken aback by its widespread acceptance and open display. None of the East Asian countries today have specific legal prohibitions against homosexuality or homosexual behavior.

Homosexuality in China, known as the pleasures of the bitten peach, the cut sleeve, or the southern custom, has been recorded since approximately 600 BCE. These euphemistic terms were used to describe behaviors, but not identities (recently some fashionable young Chinese tend to euphemistically use the term "brokeback," 斷背 duanbei to refer to male homosexuals, from the success of director Ang Lee's film Brokeback Mountain). The relationships were marked by differences in age and social position. However, the instances of same-sex affection and sexual interactions described in the classical novel Dream of the Red Chamber seem as familiar to observers in the present as do equivalent stories of romances between heterosexuals during the same period.

This same-sex love culture gave rise to strong traditions of painting and literature documenting and celebrating such relationships.

Similarly, in Thailand, Kathoey, or "ladyboys," have been a feature of Thai society for many centuries, and Thai kings had male as well as female lovers. While Kathoey may encompass simple effeminacy or transvestism, it most commonly is treated in Thai culture as a third gender. They are generally accepted by society, and Thailand has never had legal prohibitions against homosexuality or homosexual behavior.

Europe
The earliest Western documents (in the form of literary works, art objects, as well as mythographic materials) concerning same-sex relationships are derived from ancient Greece. They depict a world in which relationships with women and relationships with youths were the essential foundation of a normal man's love life. Same-sex relationships were a social institution variously constructed over time and from one city to another. The formal practice, an erotic yet often restrained relationship between a free adult male and a free adolescent, was valued for its pedagogic benefits and as a means of population control, though occasionally blamed for causing disorder. Plato praised its benefits in his early writings, but in his late works proposed its prohibition. In Ancient Rome the situation was reversed. Though the young male body remained a focus of male sexual attention, free boys were off limits as sexual partners. All the emperors with the exception of Claudius took male lovers. The Hellenophile emperor Hadrian is renowned for his relationship with Antinous, but the Christian emperor Theodosius I decreed a law on August 6, 390, condemning passive males to be burned at the stake. Justinian, towards the end of his reign, expanded the proscription to the active partner as well (in 558), warning that such conduct can lead to the destruction of cities through the "wrath of God". Notwithstanding these regulations, taxes on brothels of boys available for homosexual sex continued to be collected until the end of the reign of Anastasius I in 518.

During the Renaissance, rich cities in northern Italy, Florence and Venice in particular, were renowned for their widespread practice of same-sex love, engaged in by a considerable part of the male population and constructed along the classical pattern of Greece and Rome. But even as many of the male population were engaging in same-sex relationships, the authorities, under the aegis of the Officers of the Night court, were prosecuting, fining, and imprisoning a good portion of that population. The eclipse of this period of relative artistic and erotic freedom was precipitated by the rise to power of the moralizing monk Girolamo Savonarola. In northern Europe the artistic discourse on sodomy was turned against its proponents by artists such as Rembrandt, who in his Rape of Ganymede no longer depicted Ganymede as a willing youth, but as a squalling baby attacked by a rapacious bird of prey.

The relationships of socially prominent figures, such as King James I and the Duke of Buckingham, served to highlight the issue, including in anonymously authored street pamphlets: "The world is chang'd I know not how, For men Kiss Men, not Women now;...Of J. the First and Buckingham: He, true it is, his Wives Embraces fled, To slabber his lov'd Ganimede;" (Mundus Foppensis, or The Fop Display'd, 1691.)

Love Letters Between a Certain Late Nobleman and the Famous Mr. Wilson was published in 1723 in England and was presumed to be a novel by some modern scholars. The 1749 edition of John Cleland's popular novel Fanny Hill includes a homosexual scene, but this was removed in its 1750 edition. Also in 1749, the earliest extended and serious defense of homosexuality in English, Ancient and Modern Pederasty Investigated and Exemplified, written by Thomas Cannon, was published, but was suppressed almost immediately. It includes the passage, "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, but this was not published until 1978. Executions for sodomy continued in the Netherlands until 1803, and in England until 1835.

Between 1864 and 1880 Karl Heinrich Ulrichs published a series of twelve tracts, which he collectively titled Research on the Riddle of Man-Manly Love. In 1867 he became the first self-proclaimed homosexual person to speak out publicly in defense of homosexuality when he pleaded at the Congress of German Jurists in Munich for a resolution urging the repeal of anti-homosexual laws.

Sir Richard Francis Burton's Terminal Essay, Part IV/D appendix in his translation of The Book of the Thousand Nights and a Night (1885–86) provided an effusive overview of homosexuality in the Middle East and tropics. Sexual Inversion by Havelock Ellis, published in 1896, challenged theories that homosexuality was abnormal, as well as stereotypes, and insisted on the ubiquity of homosexuality and its association with intellectual and artistic achievement. Appendix A included A Problem in Greek Ethics by John Addington Symonds, which had been privately distributed in 1883. Beginning in 1894 with Homogenic Love, Socialist activist and poet Edward Carpenter wrote a string of pro-homosexual articles and pamphlets, and "came out" in 1916 in his book My Days and Dreams.

In 1900, Elisar von Kupffer published an anthology of homosexual literature from antiquity to his own time, Lieblingminne und Freundesliebe in der Weltliteratur. His aim was to broaden the public perspective of homosexuality beyond it being viewed simply as a medical or biological issue, but also as an ethical and cultural one.

Middle East, South and Central Asia


Among many Middle Eastern Muslim cultures egalitarian or age-structured homosexual practices were, and remain, widespread and thinly veiled. The prevailing pattern of same-sex relationships in the temperate and sub-tropical zone stretching from Northern India to the Western Sahara is one in which the relationships were&mdash;and are&mdash;either gender-structured or age-structured or both. In recent years, egalitarian relationships modeled on the western pattern have become more frequent, though they remain rare. Same-sex intercourse officially carries the death penalty in several Muslim nations: Saudi Arabia, Iran, Mauritania, northern Nigeria, Sudan, and Yemen.

A tradition of art and literature sprang up constructing Middle Eastern homosexuality. Muslim&mdash;often Sufi&mdash;poets in medieval Arab lands and in Persia wrote odes to the beautiful wine boys who served them in the taverns. In many areas the practice survived into modern times, as documented by Richard Francis Burton, André Gide, and others.

In Persia homosexuality and homoerotic expressions were tolerated in numerous public places, from monasteries and seminaries to taverns, military camps, bathhouses, and coffee houses. In the early Safavid era (1501–1723), male houses of prostitution (amrad khane) were legally recognized and paid taxes. Persian poets, such as Sa’di (d. 1291), Hafez (d. 1389), and Jami (d. 1492), wrote poems replete with homoerotic allusions. The two most commonly documented forms were commercial sex with transgender young males or males enacting transgender roles exemplified by the köçeks and the bacchás, and Sufi spiritual practices in which the practitioner admired the form of a beautiful boy in order to enter ecstatic states and glimpse the beauty of god. Some crossed over from the idealized chaste form of the practice to one in which the desire is consummated.

In the Turkic-speaking areas, one manifestation of this same-sex love was the bacchá, adolescent or adolescent-seeming male entertainers and sex workers. In other areas male love continues to surface despite efforts to keep it quiet.

Today, governments in the Middle East often ignore, deny the existence of, or criminalize homosexuality. Iranian President Mahmoud Ahmadinejad, during his famous 2007 speech at Columbia University, asserted that there were no gay people in Iran. Gay people do live in Iran, but most keep their sexuality a secret for fear of government sanction or rejection by their families.

South Pacific
In many societies of Melanesia, especially in Papua New Guinea, same-sex relationships were, until the middle of the last century, an integral part of the culture. The Etoro and Marind-anim for example, even viewed heterosexuality as sinful and celebrated homosexuality instead. In many traditional Melanesian cultures a pre-pubertal boy would be paired with an older adolescent who would become his mentor and who would "inseminate" him (orally, anally, or topically, depending on the tribe) over a number of years in order for the younger to also reach puberty. Many Melanesian societies, however, have become hostile towards same-sex relationships since the introduction of Christianity by European missionaries.

Demographics
Measuring the prevalence of homosexuality presents a number of difficulties:


 * Survey data regarding stigmatized or deeply personal feelings or activities are often inaccurate. Participants often avoid answers which they feel society, the survey-takers, or they themselves dislike.
 * The research must measure some characteristic that may or may not be defining of sexual orientation. The class of people with same-sex desires may be larger than the class of people who act on those desires, which in turn may be larger than the class of people who self-identify as gay/lesbian/bisexual.
 * In studies measuring sexual activity, respondents may have different ideas about what constitutes a "sexual act."

Reliable data as to the size of the gay and lesbian population is of value in informing public policy. For example, demographics would help in calculating the costs and benefits of domestic partnership benefits, of the impact of legalizing gay adoption, and of the impact of the U.S. military's Don't Ask Don't Tell policy. Further, knowledge of the size of the "gay and lesbian population holds promise for helping social scientists understand a wide array of important questions—questions about the general nature of labor market choices, accumulation of human capital, specialization within households, discrimination, and decisions about geographic location."

Estimates of the incidence of exclusive homosexuality range from >1% to 10% of the population, usually finding there are slightly more gay men than lesbians.

Estimates also vary from one country to another. A 1992 study reported that 6.1% of males in Britain had a homosexual experience, while in France that number was 4.1%.

Prejudice
In many cultures, homosexual people are frequently subject to prejudice and discrimination. Like many other minority groups that are the objects of prejudice, they are also subject to stereotyping. Gay men are seen as effeminate and fashionable, often identified with a lisp or a female-like tone and lilt. They are stereotyped as being promiscuous and unsuccessful in developing enduring romantic relationships, despite research to the contrary. Gay men are also often alleged as having pedophiliac tendencies and more likely to commit child sexual abuse than the heterosexual male population, a view rejected by mainstream psychiatric groups and contradicted by research. Lesbians are seen as butch, and sometimes "man-haters" or radical feminists.

Homosexuality has at times been used as a scapegoat by governments facing problems. For example, during the early 14th century, accusations of homosexual behavior were instrumental in disbanding the Knights Templar under Philip IV of France, who profited greatly from confiscating the Templars' wealth. In the 20th century, Nazi Germany's persecution of homosexual people was based on the proposition that they posed a threat to "normal" masculinity as well as a risk of contamination to the "Aryan race".

In the 1950s, at the height of the Red Scare in the United States, hundreds of federal and state employees were fired because of their homosexuality in the so-called Lavender Scare. (Ironically, politicians opposed to the scare tactics of McCarthyism tried to discredit Senator Joseph McCarthy by hinting during a televised Congressional committee meeting that McCarthy's top aide, Roy Cohn, was homosexual, as he in fact was.)

A recent instance of scapegoating is the burning of 6,000 books of homoerotic poetry of 8th c. Persian-Arab poet Abu Nuwas by the Egyptian Ministry of Culture in January 2001, to placate Islamic fundamentalists.

Violence against gay and lesbian people
In the United States, the FBI reported that 15.6% of hate crimes reported to police in 2004 were based on perceived sexual orientation. Sixty-one percent of these attacks were against gay men. The 1998 murder of Matthew Shepard, a gay student, is one of the most notorious incidents in the U.S.

Homosexual acts are punishable by death in some present-day countries including Iran, Mauritania, Nigeria, Pakistan, Saudi Arabia, Sudan, United Arab Emirates, and Yemen.

Politics


Although homosexual acts were decriminalized in some parts of the Western world, such as in Denmark in 1933, in Sweden in 1944, in the United Kingdom in 1967, and in Canada in 1969, it was not until the mid-1970s that the gay community first began to achieve actual, though limited, civil rights in some developed countries. A turning point was reached in 1973 when the American Psychiatric Association removed homosexuality from the Diagnostic and Statistical Manual of Mental Disorders, thus negating its previous definition of homosexuality as a clinical mental disorder. In 1977, Quebec became the first state-level jurisdiction in the world to prohibit discrimination on the grounds of sexual orientation.

Since the 1960s, in part due to their history of shared oppression, many LGBT people in the West, particularly those in major metropolitan areas, have developed a so-called gay culture. To many, gay culture is exemplified by the gay pride movement, with annual parades and displays of rainbow flags. Yet not all LGBT people choose to participate in "queer culture", and many gay men and women specifically decline to do so. To some it seems to be a frivolous display, perpetuating gay stereotypes. To some others, the gay culture represents heterophobia and is scorned as widening the gulf between gay and non-gay people.

With the outbreak of AIDS in the early 1980s, many LGBT groups and individuals organized campaigns to promote efforts in AIDS education, prevention, research, patient support, and community outreach, as well as to demand government support for these programs. Gay Men's Health Crisis, Project Inform, and ACT UP are some notable American examples of the LGBT community's response to the AIDS crisis.

The bewildering death toll wrought by the AIDS epidemic at first seemed to slow the progress of the gay rights movement, but in time it galvanized some parts of the LGBT community into community service and political action, and challenged the heterosexual community to respond compassionately. Major American motion pictures from this period that dramatized the response of individuals and communities to the AIDS crisis include An Early Frost (1985), Longtime Companion (1990), And the Band Played On (1993), Philadelphia (1993), and Common Threads: Stories from the Quilt (1989), the last referring to the NAMES Project AIDS Memorial Quilt, last displayed in its entirety on the Mall in Washington, D.C., in 1996.

During the 1980s and 1990s, most developed countries enacted laws decriminalizing homosexual behavior and prohibiting discrimination against lesbians and gays in employment, housing, and services. Yet as LGBT people slowly gained legal protection and social acceptance, gay bashing and hate crimes also increased due to heterosexism and homophobia (See Violence against gays, lesbians, bisexuals, and the transgendered).

Publicly gay politicians have attained numerous government posts, even in countries that had sodomy laws or outright mass murder of gays in their recent past.

Gay British politicians include former UK Cabinet ministers Chris Smith (now Lord Smith of Finsbury who is also a rare example of an openly HIV positive statesman) and Nick Brown, and, most famously, Peter Mandelson, a European Commissioner and close friend of Tony Blair. Openly gay Per-Kristian Foss was the Norwegian Minister of Finance until September 2005.

LGBT movements are opposed by a variety of individuals and organizations. Supporters of the traditional marriage movement believe that all sexual relationships with people other than an opposite-sex spouse undermines the traditional family and that children should be reared in homes with both a father and a mother.

There is also concern that gay rights may conflict with individual's freedom of speech   , religious freedoms in the workplace  , and the ability to run churches , charitable organizations  and other religious organizations in accordance with one's religious views. There is also concern that the acceptance of homosexual relationships by religious organizations might be forced through threatening to remove the tax-exempt status of churches whose views don't align with those of the government.

Coming out
Many people who feel attracted to members of their own sex have a so-called "coming out" at some point in their lives. Generally, coming out is described in three phases. The first phase is the phase of "knowing oneself," and the realization or decision emerges that one is open to same-sex relations. This is often described as an internal coming out. The second phase involves one's decision to come out to others, e.g. family, friends, and/or colleagues. This occurs with many people as early as age 11, but others do not clarify their sexual orientation until age 40 or older. The third phase more generally involves living openly as an LGBT person. In the United States today, people often come out during high school or college age. At this age, they may not trust or ask for help from others, especially when their orientation is not accepted in society. Sometimes their own parents are not even informed.

Outing is the practice of publicly revealing the sexual orientation of a closeted person. Notable politicians, celebrities, military service people, and clergy members have been outed, with motives ranging from malice to political or moral beliefs. Many commentators oppose the practice altogether, while some encourage outing public figures who use their positions of influence to harm other gay people.

Parenting
Many LGB people are parents through various means including adoption, donor insemination, foster parenting, surrogacy, from former relationships and together with an opposite sex spouse in a mixed-orientation marriage. Some children do not know they have a LGB parent.

In the 2000 U.S. Census, 33 percent of female same-sex couple households and 22 percent of male same-sex couple households reported at least one child under the age of 18 living in the home. In January 2008, the European Court of Human Rights ruled that same-sex couples have the right to adopt a child. In the U.S., LGB people can legally adopt in all states except for Florida.

Same-sex parents are supported by the positions of a number of organizations, including the American Psychological Association, the Child Welfare League of America, the American Bar Association, the American Psychiatric Association, the National Association of Social Workers, the North American Council on Adoptable Children, the American Academy of Pediatrics, the American Psychoanalytic Association, and the American Academy of Family Physicians.

The American Psychological Association has stated that: "there is no scientific evidence that parenting effectiveness is related to parental sexual orientation: lesbian and gay parents are as likely as heterosexual parents to provide supportive and healthy environments for their children…research has shown that the adjustment, development, and psychological well-being of children is unrelated to parental sexual orientation and that the children of lesbian and gay parents are as likely as those of heterosexual parents to flourish…." Children's Development of Social Competence Across Family Types, a major report prepared by the Department of Justice (Canada) in July 2006 but not released by the government until forced to do so by a request under the Access to Information Act in May 2007, reaches this conclusion:

"The strongest conclusion that can be drawn from the empirical literature is that the vast majority of studies show that children living with two mothers and children living with a mother and father have the same levels of social competence. A few studies suggest that children with two lesbian mothers may have marginally better social competence than children in traditional nuclear families, even fewer studies show the opposite, and most studies fail to find any differences. The very limited body of research on children with two gay fathers supports this same conclusion."

Corporate attitudes
In some capitalist countries, large private sector firms often lead the way in the equal treatment of gay men and lesbians. For instance, more than half of the Fortune 500 offer domestic partnership benefits and 49 of the Fortune 50 companies include sexual orientation in their non-discrimination policies (only ExxonMobil does not).

Mental health
Stigma, prejudice, and discrimination stemming from negative societal attitudes toward homosexuality leads to a higher prevalence of mental health disorders among lesbians, gay men, and bisexuals compared to their heterosexual peers. However, evidence indicates that the liberalization of these attitudes over the past few decades is associated with a decrease in such mental health risks among younger LGBT people.

Gay and lesbian youth
Gay and lesbian youth bear an increased risk of suicide, substance abuse, school problems, and isolation because of a "hostile and condemning environment, verbal and physical abuse, rejection and isolation from family and peers".

LGB youths are more likely to report psychological and physical abuse by parents or caretakers, and more sexual abuse. Suggested reasons for this disparity are that (1) LGBT youths may be specifically targeted on the basis of their perceived sexual orientation or gender non-conforming appearance, and (2) "risk factors associated with sexual minority status, including discrimination, invisibility, and rejection by family members... may lead to an increase in behaviors that are associated with risk for victimization, such as substance abuse, sex with multiple partners, or running away from home as a teenager."

Crisis centers in larger cities and information sites on the Internet have arisen to help youth and adults. The Trevor Helpline, a suicide prevention helpline for gay youth, was established following the 1998 airing on HBO of the Academy Award winning short film Trevor.

Military service
Some ancient and pre-modern societies, such as Greece and Japan, fostered erotic love bonds between experienced warriors and their apprentices. It was believed that a man and youth who were in love with each other would fight harder and with greater morale. A classic example of a military force built upon this belief is the Sacred Band of Thebes.

The adoption of Christianity by the Roman Emperor Constantine in the fourth century and subsequent predominance of Christianity led to a diminished emphasis on erotic love among military forces. By the time of the Crusades, the military of Europe had largely switched gears, asserting that carnal relations between males were sinful and therefore had no place in an army that served their perception of God's will. The Knights Templar, a prominent military order, was destroyed by accusations (probably fabricated) of sodomy.

The United Kingdom, Canada, the Netherlands, and Israel admit openly gay service members, and others—like the United States, and many nations in South America and the Caribbean—either quiet or discharge anyone found to be engaging in homosexual relations or openly identifying as gay; the United States is known for its 1993 "don't ask, don't tell" policy. The traditional justification for excluding openly gay service members is that it may lead to "harassment, discord, blackmail, bullying or an erosion of unit cohesion or military effectiveness". The British military, which removed their restriction against gay service members in 2000, has not experienced any of these feared results.

Religion
Religions have had differing views about love and sexual relations between people of the same sex. Presently, a large proportion of the Abrahamic sects, as well as sects from other religions, view sexual relationships outside of a heterosexual marriage, including homosexual sex, negatively; though there are groups within each faith that disagree with orthodox positions and challenge their doctrinal authority. Opposition to homosexual behavior ranges from quietly discouraging displays and activities to those who explicitly forbid same-sex sexual practices among adherents and actively oppose social acceptance of homosexual relationships. Support of homosexual behavior is reflected in the acceptance of sexually heterodox individuals in all functions of the church, and sanctification of same-sex unions.

Some gay men, lesbians and bisexuals seek to diminish same-sex attractions, avoid same-sex relationships, or change sexual orientation. Some attempted methods include conversion therapy, religious practice, or attendance in ex-gay groups (such as Exodus International). Many Western health and mental health professional organizations believe sexual orientation develops across a person’s lifetime and they respect a person’s right to self-determination. However, neither the effectiveness nor the harm of conversion therapies have been rigorously and scientifically proven, and many Western health and mental health professional organizations recommend that therapists refrain from attempts to change individuals' sexual orientation, given concerns of potential harm caused by such attempts. The promotion of ex-gay groups and conversion therapy in schools has led to controversy, but has been allowed by American courts.

Several churches teach love and compassion towards gay people, regardless of their sexual practices, while still teaching against homosexual relationships. The Catechism of the Catholic Church states gay people "must be accepted with respect, compassion and sensitivity. Every sign of unjust discrimination in their regard should be avoided." The LDS Church denounced gay-bashing and has officially stated that its members "reach out with understanding and respect".

Other churches have changed their doctrine to accommodate homosexual relationships. Reform Judaism, the largest branch of Judaism outside Israel, has begun to facilitate religious same-sex marriages for gay adherents in their synagogues. Jewish Theological Seminary, considered to be the flagship institution of Conservative Judaism, decided in March 2007 to begin accepting applicants in homosexual relationships, after scholars who guide the movement lifted the ban on ordaining people in homosexual relationships. In 2005, the United Church of Christ became the largest Christian denomination in the United States to formally endorse same-sex marriage.

On the other hand, the Anglican Communion encountered discord that caused a rift between the African (except Southern Africa) and Asian Anglican churches on the one hand and North American churches on the other, when American and Canadian churches openly ordained gay clergy and began blessing same-sex unions. Other churches such as the Methodist Church had experienced trials of gay clergy who some claimed were a violation of religious principles resulting in mixed verdicts dependent on geography.

Some religious groups have even promoted boycotts of corporations whose policies support the LGBT community. In early 2005, the American Family Association threatened a boycott of Ford products to protest Ford's perceived support of "the homosexual agenda and homosexual marriage".

Forms of relationships
People with a homosexual orientation can express their sexuality in a variety of ways, and may or may not express it in their behaviors. Research indicates that many lesbians and gay men want and have committed relationships. For example, survey data indicate that between 40% and 60% of gay men and between 45% and 80% of lesbians are currently involved in a romantic relationship. They can have sexual relationships predominately with people of their own gender, the opposite gender, both genders or they can be celibate.

Same-sex relationships
Studies have found same-sex and opposite-sex couples to be equivalent to each other on measures of relationship satisfaction and commitment. Many lesbians and gay men form durable relationships. For example, survey data indicate that between 18% and 28% of gay couples and between 8% and 21% of lesbian couples in the U.S. have lived together 10 or more years. The types of relationships vary by region and what is permitted by law.

Scholars who study the social construction of homosexuality investigate the various forms that same-sex relationships have taken in different societies, and look for patterns as well as differences. Their work suggests that the concept of homosexuality would best be rendered as "homosexualities". Anthropologists group these socio-historical variations into three separate categories:

Usually in any society one form of homosexuality predominates, though others are likely to co-exist. As historian Rictor Norton points out in his Intergenerational and Egalitarian Models, in ancient Greece egalitarian relationships co-existed (albeit less privileged) with the institution of pederasty, and fascination with adolescents can also be found in modern sexuality, both heterosexual and homosexual. Egalitarian homosexuality is the principal form present in the Western world, while age- and gender-structured homosexuality are less common. As a byproduct of growing Western cultural dominance, this egalitarian homosexuality is spreading from Western culture to non-Western societies, although there are still defined differences between the various cultures.

Opposite sex relationships
Many LGB people have sexual relationships with someone of the opposite sex. Reasons can include discrimination, wishful thinking, real affection, sexual love, desire for family, as well as religious reasons. Many LGB people and their opposite sex partner enter into a mixed-orientation marriage. While many hide their orientation from their spouse, others develop a positive homosexual identity while maintaining a successful marriage.

Homosexual behavior in animals
Homosexual sexual behavior occurs in the animal kingdom, especially in social species, particularly in marine birds and mammals, monkeys, and the great apes. Homosexual behavior has been observed among 1,500 species, and in 500 of those it is well documented. . This discovery constitutes a major argument against those calling into question the biological legitimacy or naturalness of homosexuality, or those regarding it as a meditated social decision. For example, male penguin couples have been documented to mate for life, build nests together, and to use a stone as a surrogate egg in nesting and brooding. In a well-publicized story from 2004, the Central Park Zoo in the United States replaced one male couple's stone with a fertile egg, which the couple then raised as their own offspring.

The genetic basis of animal homosexuality has been studied in the fly Drosophila melanogaster. Here, multiple genes have been identified that can cause homosexual courtship and mating. These genes are thought to control behavior through pheromones as well as altering the structure of the animal's brains. These studies have also investigated the influence of environment on the likelihood of flies displaying homosexual behavior.

Georgetown University professor Janet Mann has specifically theorized that homosexual behavior, at least in dolphins, is an evolutionary advantage that minimizes intraspecies aggression, especially among males. Studies indicating prenatal homosexuality in certain animal species have had social and political implications surrounding the gay rights debate.

Books

 * Kenneth J. Dover, Greek Homosexuality,, Gerald Duckworth & Co. Ltd. 1979, ISBN 0-674-36261-6 (hardcover), ISBN 0-674-36270-5 (paperback)
 * John d'Emilio, Sexual Politics, Sexual Communities: The Making of a Homosexual Minority in the United States, 1940-1970, University of Chicago Press 1983, ISBN 0226142655
 * Norman Roth. The care and feeding of gazelles - Medieval Arabic and Hebrew love poetry. IN: Lazar & Lacy. Poetics of Love in the Middle Ages, George Mason University Press 1989, ISBN 0913969257


 * Allan Bérubé, Coming out under Fire: The History of Gay Men and Women in World War Two, New York: MacMillan 1990, ISBN 0029031001
 * Bret Hinsch, Passions of the Cut Sleeve: The Male Homosexual Tradition in China, The University of California Press, 1990, ISBN 0-520-06720-7
 * Dynes, Wayne R. (ed.) The Encyclopedia of Homosexuality New York and London, Garland Publishing 1990, ISBN 0824065441
 * Foucault, Michel, The History of Sexuality vol. 1: An Introduction, p.43. Trans. Robert Hurley. New York: Vintage 1990
 * George Rousseau, Perilous Enlightenment: Pre- and Post-Modern Discourses--Sexual, Historical, Manchester University Press 1991, ISBN 0719033012
 * Lillian Faderman, Odd Girls and Twilight Lovers: A History of Lesbian Life in Twentieth Century America, Penguin 1992
 * Arno Schmitt & Jehoeda Sofer (eds). Sexuality and Eroticism Among Males in Moslem Societies. Haworth Press, 1992
 * George Chauncey, Gay New York: Gender Urban Culture and the Making of the Gay Male World, New York: Basic Books, 1994
 * Juanita Ramos, Compañeras: Latina Lesbians : An Anthology, Routledge 1994
 * Johansson, Warren and Percy, William A., (1994), Outing: Shattering the Conspiracy of Silence, Harrington Park Press
 * Robert T. Michael, John H. Gagnon, Edward O. Laumann, and Gina Kolata. Sex in America: A definitive survey. Boston: Little, Brown, 1995. ISBN 0-316-07524-8
 * Percy, William A Pederasty and Pedagogy in Archaic Greece. University of Illinois Press, 1996
 * Lester G. Brown, Two Spirit People, 1997, Harrington Park Press, ISBN 1-56023-089-4
 * Bullough et al. (eds.) (1996). Handbook of Medieval Sexuality. Garland Publishing. ISBN 0-8153-1287-3.
 * Jennifer Terry, An American Obsession: Science, Medicine, and Homosexuality in Modern Society, University of Chicago Press 1999, ISBN 0-226-79367-2


 * Bullough, Vern L. Before Stonewall: Activists for Gay and Lesbian Rights in Historical Context, Harrington Park Press 2002
 * Ruth Vanita, Queering India: Same-Sex Love and Eroticism in Indian Culture and Society, Routledge 2002
 * Joanne Meyers, Historical Dictionary of the Lesbian Liberation Movement: Still the Rage, Scarecrow Press 2003
 * David K. Johnson, The Lavender Scare: The Cold War Persecution of Gays and Lesbians in the Federal Government, Chicago: University of Chicago Press, 2004

Journal articles

 * Bowman, Karl M.; Eagle, Bernice The Problem of Homosexuality, Journal of Social Hygiene 1953
 * Norton, Rictor and Crew, Louis The Homophobic Imagination, College English 1974
 * Simon LeVay, A difference in hypothalamic structure between homosexual and heterosexual men, Science Magazine 1991
 * Christopher Bagley and Pierre Tremblay, On the Prevalence of Homosexuality and Bisexuality, in a Random Community Survey of 750 Men Aged 18 to 27, Journal of Homosexuality, Volume 36, Number 2, pages 1-18, 1998

Online articles

 * BBC News (Feb 1998): Fingerprints Study
 * BBC News (Apr 1999): Doubt cast on 'gay gene'
 * WebMD (March 2000): Pointing the Finger at Androgen as a Cause of Homosexuality
 * BBC News (Oct 2004): Genetics of homosexuality
 * James Davidson, London Review of Books, 2 June 2005, "Mr and Mr and Mrs and Mrs" - detailed review of The Friend, by Alan Bray, a history of same-sex marriage and other same-sex formal bonds
 * Murray, Stephen; Homosexuality in traditional Sub-Saharan Africa