Genes affect women’s ability to reach orgasm

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Women who have difficulty reaching orgasm can blame it on their genes. Like Heart disease, anxiety and depression, scientists discovered in a study of 1,397 pairs of female twins there is a genetic basis to female orgasm.

“We found that between 34 percent and 45 percent of the variation in ability to orgasm can be explained by underlying genetic variation,” said Tim Spector, of the Twin Research Unit at St. Thomas’ Hospital in London. “There is a biological underlying influence that can’t be attributed purely to upbringing, religion or race,” he added.

Other studies have attributed differences in the ability to achieve orgasm to cultural, religious and psychological factors.

Between 12 and 15 percent of women don’t have orgasms compared to about 2 percent of men. Males are also quicker, reaching orgasm in 2.5 minutes, while the average time it takes for a woman to reach orgasm is 12 minutes, according to Spector.

“Why is there this biological difference between the sexes? The fact that some of this is heritable suggests that evolution has a role,” he told a news conference.

Spector suggested reaching an orgasm could be a way for women to assess whether a man would make a good long-term partner. It may also increase fertility, according to some theories. In their study of identical and non-identical twins, published on Wednesday in the journal Biology Letters, Spector and his team found huge variations when they surveyed them about sexual problems.

One in three women, or 32 percent, said they never or infrequently had an orgasm, and 14 percent said they always had an orgasm during intercourse.

“More women were able to orgasm during masturbation, with 34 percent always reaching orgasm,” the researchers said in the journal.

The frequency of orgasm was higher for identical twins with a partner and by themselves, which suggests a clear genetic impact, said Spector.

“There is something biological that explains some of this large variation between women,” he said, adding that many genes could be involved.

If scientists could discover which genes and how they function, it could potentially pave the way for future therapies to treat women who cannot reach orgasm.

But Spector said orgasm is a very complex process that is poorly understood. Little research has been done because it is still a taboo subject.

Anatomical and biological features and psychological factors may all play a part.

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