When there are so many homosexuals in one extended family, it is difficult to deny that heredity played some kind of role.
5/13/2013 – Identical Twin Studies Prove Homosexuality Is Not Genetic
Eight major studies of identical twins in Australia, the U.S., and Scandinavia during the last 2 decades all arrive at the same conclusion: gays were not born that way. “At best genetics is a minor factor,” says Dr. Neil Whitehead, PhD. Whitehead worked for the New Zealand government as a scientific researcher for 24 years, then spent 4 years working for the United Nations and International Atomic Energy Agency. Most recently, he serves as a consultant to Japanese universities about the effects of radiation exposure. His PhD is in biochemistry and statistics.
Identical twins have the same genes or DNA. They are nurtured in equal prenatal conditions. If homosexuality is caused by genetics or prenatal conditions and 1 twin is gay, the co-twin should also be gay. “Because they have identical DNA, it ought to be 100%,” Dr. Whitehead notes. But the studies reveal something else. “If an identical twin has same-sex attraction the chances the co-twin has it are only about 11% for men and 14% for women.”
Because identical twins are always genetically identical, homosexuality cannot be genetically dictated. “No-one is born gay,” he notes. “The predominant things that create homosexuality in one identical twin and not in the other have to be post-birth factors.”
Dr. Whitehead believes same-sex attraction (SSA) is caused by “non-shared factors,” things happening to one twin but not the other, or a personal response to an event by 1 of the twins and not the other. For example, 1 twin might have exposure to pornography or sexual abuse, but not the other. One twin may interpret and respond to their family or classroom environment differently than the other. “These individual and idiosyncratic responses to random events and to common environmental factors predominate,” he says.
The 1st very large, reliable study of identical twins was conducted in Australia in 1991, followed by a large U.S. study about 1997. Then Australia and the U.S. conducted more twin studies in 2000, followed by several studies in Scandinavia, according to Dr. Whitehead. “Twin registers are the foundation of modern twin studies. They are now very large, and exist in many countries. A gigantic European twin register with a projected 600,000 members is being organized, but 1 of the largest in use is in Australia, with more than 25,000 twins on the books.”
A significant twin study among adolescents shows an even weaker genetic correlation. In 2002 Bearman and Brueckner studied tens of thousands of adolescent students in the U.S. The same-sex attraction concordance between identical twins was only 7.7% for males and 5.3% for females—lower than the 11% and 14% in the Australian study by Bailey et al conducted in 2000.
In the identical twin studies, Dr. Whitehead has been struck by how fluid and changeable sexual identity can be. “Neutral academic surveys show there is substantial change. About half of the homosexual/bisexual population (in a non-therapeutic environment) moves towards heterosexuality over a lifetime. About 3% of the present heterosexual population once firmly believed themselves to be homosexual or bisexual. Sexual orientation is not set in concrete,” he notes.
Even more remarkable, most of the changes occur without counseling or therapy. “These changes are not therapeutically induced, but happen ‘naturally’ in life, some very quickly,” Dr. Whitehead observes. “Most changes in sexual orientation are towards exclusive heterosexuality.”
Numbers of people who have changed towards exclusive heterosexuality are greater than current numbers of bisexuals and homosexuals combined. In other words, ex-gays outnumber actual gays.
The fluidity is even more pronounced among adolescents, as Bearman and Brueckner’s study demonstrated. “They found that from 16 to 17-years-old, if a person had a romantic attraction to the same sex, almost all had switched 1 year later.”
“The authors were pro-gay and they commented that the only stability was among the heterosexuals, who stayed the same year after year. Adolescents are a special case—generally changing their attractions from year to year.”
Still, many misconceptions persist in the popular culture. Namely, that homosexuality is genetic – so hard-wired into one’s identity that it can’t be changed. “The academics who work in the field are not happy with the portrayals by the media on the subject,” Dr. Whitehead notes. “But they prefer to stick with their academic research and not get involved in the activist side.”
....”When there are so many homosexuals in one extended family, it is difficult to deny that heredity played some kind of role”....
No it’s not...the world around young people today, and adults for that matter greatly influences kids, not to mention the educational system and the changes in our society in what it will accept.....further Homosexuality is not Genetic...That would be like saying the reason there is so much free sex today is heredity.... when in fact it’s been presented as perfectly acceptable to engage in as one determines “they are ready for” rather than the moral issue. The same is now being promoted for homosexuality...”How do you know unless you try and see” statements flood conversations among people.
There are a lot more who are the only homosexuals in their family too. Many or most were molested as youths, which is a much bigger factor.
There is no evidence of it being genetic, but even so - lots of diseases are genetic.