Eight Major Identical Twin Studies Prove Homosexuality Is Not Genetic

Excerpted from OTToday: Eight major studies of identical
twins in Australia, the U.S., and Scandinavia during the last
two 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 four 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 one 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.”
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 one of
the twins and not the other.
For example, one 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 first 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 one 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.

Source: Jews News.