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The researchers also used data from nearly 70,000 customers of the genetic testing service 23andMe, who were 51 years old on average, mostly American, and had answered survey questions about sexual orientation. Biobank, who answered extensive health and behavior questions between 20, when they were between the ages of 40 and 69. The study analyzed the genetic data of 408,000 men and women from a large British database, the U.K. underscores a central finding of the study: Sexuality is complicated. In a way, the range of opinions by scientists who also identify as L.G.B.T.Q. “I have yet to see a compelling argument that the potential benefits of this study outweigh its potential harms.” “As a queer person and a geneticist, I struggle to understand the motivations behind a genome-wide association study for non-heterosexual behavior,” wrote Joe Vitti, a postdoctoral researcher at the Broad Institute, in one essay. “Personally, I’m still concerned that it’s going to be deliberately misused to advance agendas of hate, but I do believe that the sort of proactive way we’ve approached this and a lot of the community engagement aspects that we’ve tried were important.” “I definitely heard from people who were kind of ‘why do this at all,’ and so there was some resistance there,” said Dr. groups to clarify wording and highlight caveats.
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Neale said the team, which included psychologists and sociologists, used suggestions from those colleagues and outside L.G.B.T.Q.
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Neale’s team and colleagues who questioned the research continued for months. affinity group, “It seems like something that could easily be misconstrued,” he said, adding, “In a world without any discrimination, understanding human behavior is a noble goal, but we don’t live in that world.”ĭiscussions between Dr. “I deeply disagree about publishing this,” said Steven Reilly, a geneticist and postdoctoral researcher who is on the steering committee of the institute’s L.G.B.T.Q. Another fear is that evidence that genes play only a partial role could embolden people who insist being gay is a choice and who advocate tactics like conversion therapy. One concern is that evidence that genes influence same-sex behavior could cause anti-gay activists to call for gene editing or embryo selection, even if that would be technically impossible. The research also suggests the genetics of same-sex sexual behavior shares some correlation with genes involved in some mental health issues and personality traits - although the authors said that overlap could simply reflect the stress of enduring societal prejudice. The study of nearly half a million people, funded by the National Institutes of Health and other agencies, found differences in the genetic details of same-sex behavior in men and women. This is part of our species and it’s part of who we are.” “It’s written into our genes and it’s part of our environment. and Harvard and one of the lead researchers on the international team. “I hope that the science can be used to educate people a little bit more about how natural and normal same-sex behavior is,” said Benjamin Neale, a geneticist at the Broad Institute of M.I.T. The influence comes not from one gene but many, each with a tiny effect - and the rest of the explanation includes social or environmental factors - making it impossible to use genes to predict someone’s sexuality. How do genes influence our sexuality? The question has long been fraught with controversy.Īn ambitious new study - the largest ever to analyze the genetics of same-sex sexual behavior - found that genetics does play a role, responsible for perhaps a third of the influence on whether someone has same-sex sex.