POSTED: Thursday, June 17, 2010 - 6:20pm
UPDATED: Friday, June 18, 2010 - 9:23pm
The science of love takes on a new twist on why men stray. According to a study, that cheating heart is really about the brain. And for better or for worse, some scientists say that men are born with it.
Lisa Kim reports in tonight's medical news: The secrets for the happily-ever-after.
Love. Happiness. Loyalty. Ah yes, loyalty! But no matter the vows, some scientists say cheating is in the genes.
"I think a gene might be a bit of a stretch; I don't know," said marriage and relationship expert Dr. Brenda Wade. "There's a gene that's been shown, that if men have this particular gene or a variant of the gene, they have more trouble in relationships."
Dr. Brenda Wade is a psychology expert who's written three books on marriage and relationships. She agrees with a study done in Sweden in which scientists studied the gene types of 552 sets of twins.
They found a bonding chemical in some men that makes them less likely to be married and more likely to have bad relationships.
Dr. Wade said, "I say to men who have problems with cheating, number one you must answer the question: where did you learn cheating behavior?"
But it can also be unlearned. The study also found that the brain can be trained to resist temptation.
"The key is recognizing the unlimited potential that we have to make ourselves who we want to be," Dr. Wade said.
Scientists say men don't have to cheat, but they do have to work harder at staying faithful. As for women, the scientists will put them under the monogamous microscope next.