Most researchers believe that both genetic and environmental factors (biological and social) play a role in forming sexual orientation.December 4, 2015 1:00 am
Most researchers believe that both genetic and environmental factors (biological and social) play a role in forming sexual orientation.
They are not quite sure how it all comes together.
A variety of things point to someone being “more likely” to be gay, but none of the following are determinative:
Genes, hormones, brain structure and womb chemistry all seem to play a role.
But maybe it takes a blending of factors to create straight or gay.
Why aren’t identical twins always the same sexual orientation?
I’d like to spend a bit more time discussing why identical twins don’t always share the same sexual orientation.
The blending of factors I just described might play a role. Some researchers have suggested that twins might get a different hormone distribution, depending upon their placement in utero, for instance.
Maybe epigenetics are a factor, too. When twins are born their genes are identical. But over time the environment adds information and affects gene expression, so that twins become less identical with age.
There’s also the question of admitting that you are gay. When twins are separated at birth, one twin might be more likely to admit — to himself or to others — that he is gay if he were raised in a more liberal home, for instance.
More later.
(Second in a 3-part series on sexual orientation.)
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Categories: feminism, LGBTQ+, psychology, sex and sexuality
Tags: did you choose to be straight, feminism, LGBTQ+, psychology, sex, sexual orientation, sexuality
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Religion too can influence sexual orientation. Like in this video, where all straight women are more open while a muslim woman opposed. https://www.youtube.com/watch?v=4Hvaos4qxi8
By Akhil Raj on February 18, 2016 at 3:50 am
In the Muslim world women often don’t even date men, and their marriages are often arranged. So guy might not have had much luck either.
But there is also a difference between orientation and arousal. So the women who were open to experimenting might try it out yet find that they are uninterested, Or find that they’re still more interested in men. See this:
Sexual Fluidity, Images & Biology
By BroadBlogs on February 20, 2016 at 10:12 pm
I find this topic of “biological and environmental factors” role and affect in forming a sexual orientation so interesting. I do think there is a definite correlation in one’s social/cultural environment and their sexual preference. For example, in a culture that is more accepting and open to homosexuality, then someone is more likely to experiment and uncover where they stand on the spectrum of sexuality. But clearly the social aspect can’t be the entire force behind sexuality because of the research done on identical twins. Genetics seem to account for sexuality in some way or another, highlighted in your point that “Twin studies suggest genes account for 34% to 50% of the reason why someone is gay”. I’m really looking forward to the next part of this series.
By Lauren Lete on December 6, 2015 at 11:08 pm
Yeah, it’s pretty interesting seen how Biology and our social experiences intertwine.
By BroadBlogs on December 7, 2015 at 5:31 pm
So the “born this way” is only half the truth
By dim on December 7, 2015 at 11:36 pm
But a key half.
By BroadBlogs on December 8, 2015 at 12:00 am
I definitely agree that environment factors can affect sexual orientation. I have a friend, who experienced his mother’s betrayal although his father was really responsible and caring. Then he became homosexual when he was in middle school, which he suffered a lot from due to the conservative and patriarchal society. Sometimes I am also confused about my sexual orientation. Actually I have no idea what love is and I feel “shameful” whenever I picture me being lesbian. But I think there is a potential… as all elder males in my life have betrayed. One of them has hurt my dearest person in the world, my grandmother. Anyway I can’t trust men. I always push them away from me. So we’ll see. Maybe one day, I will find it out.
By Lyn Lu on December 6, 2015 at 11:00 pm
And women do seem to have more flexibility than men. So it can be confusing.
By BroadBlogs on December 7, 2015 at 5:55 pm
Interesting! I ever knew about those biological pointers…my ring finger is longer than my index finger 😉 I’ve always enjoyed the company of lesbian women – they seem less full of nonsense than some other women, and I like how they are not beholden to men for anything!
By sara on December 4, 2015 at 3:57 pm
And of course it’s “more likely,” but not determinative since a blending of factors — genes, hormones, brain structure and womb chemistry — may be what it takes to create straight or gay.
By BroadBlogs on December 4, 2015 at 4:51 pm
Right!
By sara on December 4, 2015 at 4:53 pm
More than genetic or left-right inclinations, the environment and social exposure may well be deciding factors. More may be for the researcher and social scientist to unravel…
By Rajagopal on December 4, 2015 at 8:10 am
Not sure what you mean by left-right inclinations. Since I’m not sure what you are saying I will add this: I will have to say that even if the environment (biological and sociological) and general social exposure play important roles, it’s not as if someone can *decide* to be gay or straight. For instance, you can’t determine what environmental information enters your genes, and you can’t take it out surgically once it’s there. And there is a “nature-nurture dance” such that nurture affects our biology. But when we end up however we are, we can’t just change it. If you could, there wouldn’t be so many gay people who have tried so hard to change and couldn’t, and who end up committing suicide because they come to hate themselves so much. But thank you for your thoughts.
By BroadBlogs on December 4, 2015 at 12:44 pm
Why look for such a thing? Being lesbian, gay, trans or bi is not a disease. People are who they are, that’s all. There is no need to find out causes. Do they want to heal the rainbow people or prevent them from existing?
By Esther Ling on December 4, 2015 at 2:30 am
Maybe things are different in France, which is where I believe you are from. But in the United States the more someone believes that being gay has a biological cause, the more likely they are to be accepting of gays. Maybe because then they feel that God made them that way. So finding a biological cause tends to help fight homophobia. And all the research points to a biological cause at base.
And when a blending of factors is the cause, As appears to be the case, it would be pretty much impossible to “cure” someone of being gay.
Now, among people who Aren’t homophobic, cause doesn’t really matter. They tend to be fine with gay people regardless of the cause. And that’s where I am. I really don’t care. But other people do and I’m a social researcher, Who has general curiosity, So I write about these things.
By BroadBlogs on December 4, 2015 at 12:35 pm
I come from Israel. I do my studies in USA (San Francisco). I thank you for the insight.
By Esther Ling on December 5, 2015 at 12:09 am
Hmmm, wonder why I thought you were French.
By BroadBlogs on December 5, 2015 at 1:11 am
While many previous studies have looked into potential genetic drivers of homosexuality, these studies often boasted a significantly smaller sample size or lacked common controls. This is the first study of its kind to boast such a robust sample size and also be published in a scientific peer-reviewed paper.
By mihrank on December 4, 2015 at 1:16 am
Which studies are you talking about?
By BroadBlogs on December 4, 2015 at 1:29 am
The study detailed an in-depth analysis of blood and saliva samples taken from 409 pairs of openly gay brothers, including non-identical twins, from 384 families. The only common characteristic shared by all 818 men was being gay.
Knowing this, the researchers theorized that any single nucleotide polymorphisms (SNPs) consistently found among these men would have something to do with sexual orientation.
By mihrank on December 4, 2015 at 1:32 am
Thank you.
By BroadBlogs on December 4, 2015 at 1:40 am
I’m left handed:D
By AmirhoseinGhazi on December 4, 2015 at 1:08 am
Well, maybe it takes a blending of factors to create straight or gay. 😉
By BroadBlogs on December 4, 2015 at 1:28 am
I’m sure I’m straight:)
By AmirhoseinGhazi on December 4, 2015 at 1:31 am
😊
By BroadBlogs on December 4, 2015 at 1:39 am
Thanks for your awesome & informative blog miss:)
By AmirhoseinGhazi on December 4, 2015 at 1:50 am
You are most welcome!
By BroadBlogs on December 4, 2015 at 2:03 am
Pleasure is all mine:)
By AmirhoseinGhazi on December 4, 2015 at 2:03 am