What causes someone to be gay

The precise genes involved in the causes of being gay have not yet been identified but they appear to come from the mother. Additionally, some studies have found that the brains from homosexuals differ from the brains of heterosexuals. Recently, scientists announced that they found some genes that might be associated with sexual orientation and a biological explanation for the reason gay men tend to have older brothers.

It’s not completely known why someone might be lesbian, gay, straight, or bisexual. But research shows that sexual orientation is likely caused partly by biological factors that start before birth. Since then more and more research has revealed that same-sex sexual behavior is influenced by multiple genes and environmental factors.

Controversial results released in suggested a genetic. There is no single gene responsible for a person being gay or a lesbian.

That’s the first thing you need to know about the largest genetic investigation of sexuality ever, which was published. Hart, and R. If testosterone is given to a female rat gay prior to and following birth, the size of the medial preoptic area of her hypothalamus will fall within the range of that found in non-treated male rats. Cox July 2, There are studies that have more validity.

Also, in finding that homosexuality seemed to be a sex-linked trait, biology again seems to lend causation. As someone who studies cultural and social trends for a living, this is simply remarkable. In any case, the ubiquity and frequency of same-sex sexual behaviour in mammals means homosexuality cannot be considered aberrant or maladaptive in humans, or any other species.

Southam, When female adult rats were given testosterone, there was no change in the size of this area of their brains. July 10, Who Wants to Have Sex? Lewis, "Adult erotosexual status and fetal hormonal masculinization and demasculinization: 46,XX congenital virizing adrenal hyperplasia and 46, XY androgen-insensitivity what cause compared," Psychoneuroendocrinology 9: Study of family history reveals that homosexual men have more homosexuals in their family tree than do heterosexuals.

Once the brain is "organized" or set in a certain way, hormones that an animal is exposed to have a someone effect on changing that organization, if there is at all an effect.

Gay symptoms

It has been proposed that the common ancestor of mammals indulged in indiscriminate sexual behaviour, which manifested as a mix of same-sex and heterosexual relationships. Caplan, eds. Allen and R. Read more: Born this way? New York: Oxford University Press, This suggests same-sex sexual behaviour has been gained and lost many times, and quite recently, during mammalian evolution.

How – and why – did homosexual behaviour evolve in humans and other animals?

However, rats and guinea pigs are not primates. Soulairac, Critics of these studies argue that the hypothalamus plays a very insignificant role in sexuality. Increasing social acceptance of homosexuality does not explain why the rise in LGBTQ identity is primarily occurring among young liberal women—are they uniquely tolerant or supportive? But these early virtual communities required people to actively seek out these someone spaces, while modern social media algorithms excel at sending affirmations directly to us.

Studies that are being performed currently and those done in the recent past have shown that there are strong connections between male gay and biology. The hypothalamuses of mammals rats, gerbils, macaque monkeys and others have been found to be sexually dimorphic, more specifically in the medial preoptic area. Soulairac, A. We conclude from this study that same-sex sexual behaviour in both what causes and females evolved as species shifted from solitary living to sociality.

In males, this nucleus can be from two to three times larger than it is in females. Is Being Gay a Choice? Different lineages showed different times at which same-sex sexual behaviour evolved. This should not be overlooked.