"We know that vasopressin is released during sex," says Young, "and it's probably released in other intimate situations as well." Make sure your vasopressin receptors are firing throughout the day by creating what Neuman calls "touch points." Commit to making five small, intimate gestures-a hug, kiss, e-mail, or text, for instance-throughout the day. Keep the faith: To ward off any such probabilities in your own relationship, increase your intimacy to boost bonding. "So you can't ever say you're genetically pre-determined to cheat." "This gene changes the probability of the type of relationship you'll have it doesn't determine it," he explains. Your culture, childhood, and other life experiences play a large role in determining your behavior, Young says. Having the gene variant isn't a get-out-of-jail-free card, however. The 2008 Karolinska study found that with this version of the gene, you're less likely to commit and twice as likely to report recent relationship problems. (In women, oxytocin serves the same purpose.)īut according to scientists at Stockholm's Karolinska Institute, if you have a certain variation of the gene coding for one type of vasopressin receptor, you won't be as affectionate and cuddly as your mate would like you to be. Assuming that what's true for voles is also true for humans, vasopressin activates bonding centers in your brain, making you feel attached and protective. In male voles, vasopressin helps keep the mate close and the competition far away. Emory University psychiatry professor Larry Young, Ph.D., has found that switch in voles: It's a gene that regulates the release of vasopressin, a hormone that activates receptors in the brain to regulate behavior. It turns out there's a switch inside the brain that controls the desire to form close ties. This small rodent is one of the few mammals that actually bond with their mates, and a vole's genetic traits give scientists clues about why humans stray from theirs. Well, not a rat, exactly, but a vole-a prairie vole. Tapping new research in genetics, economics, anthropology, and biology, as well as our experts' advice, we've developed this guide to the causes of infidelity-and what you can do to make sure the home fires blaze hot enough to keep you happy. Knowing what makes men stray and how to squelch those urges can help keep you and your chosen one happy for the long haul. Play icon The triangle icon that indicates to play
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