Saliva Test To Identify Gay Men Is 67% Accurate

Here is a weird fact---a new saliva test can tell whether a man is gay or straight. It is a scientific test that is based on genetics and was revealed at the annual meeting of the American Society of Human Genetics this week in Baltimore, Md, according to HNGN.

The saliva test seems to be gender biased! It is based on Tuck C. Ngun's research on homosexuality that involve male identical twins, relying on an algorithm developed from epigenetic markers taken from 37 pairs of twins which had different homosexual and heterosexual orientations. These markers could locate gene regions differentiating the homosexual from the heterosexual twin.

"It seems as though the mother's body is remembering the sex of previous pregnancies," said Tuck Ngun at the University of California Los Angeles. Pregnancy with a male child may leave a marker behind affecting other pregnancies, mainly due to "epigenetic changes" or the "addition or subtraction of a methyl group" to the genes. This might flip them on or off.

The test was accurate about 67 percent of the time, according to New Scientist  "The predictive test needs replication on larger samples in order to know how good it is, but in theory it's quite interesting," said Michael Bailey from Northwestern University.

Homosexuality seems to be determined by various variables. While the test is genetic in nature, some tests show the effects of environment such as the "fraternal birth order effect". It has been found that a woman's first male pregnancy boosts the chance of the son being homosexual by as much as 33 percent, according to Popular Science.