Is cheating in your DNA?

As extramarital dating sites gain unprecedented demand, psychologists, social commentators and adulterers are queuing up to determine whether infidelity is in a person's DNA

American TV host Dr Phil McGraw believes so. Speaking on his show last week, he revealed one simple test that women can take to determine whether their man is likely to be unfaithful, the Sydney Morning Herald reports.

Dr Phil told ladies to size up their partner's hands, as men with a ring finger longer than their index finger have higher testosterone levels and are therefore more likely to play away from home.

However, others claim that it is harder to determine whether infidelity is intrinsic to genetic makeup.

Ron Trent, professor of medicine and molecular genetics at the University of Sydney, told the news provider: "There may be some sort of connection but these are complex traits and a lot of these situations involve a combination of genes and environmental factors."

Psychology Today recently reported that people with significantly lower heart rates are more prone to adultery, according to US neuroeconomist Paul J Zak.

As the nature versus nurture debate rages on, one thing seems certain – extramarital relationships are on the rise.

Category: Other adultery news

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