14 Sep '11, 2am

Fatherhood dramatically lowers testosterone levels, a study finds

CHICAGO - Fatherhood lowers testosterone levels, United States researchers said, making it easier for men to be involved in raising children. High levels of the hormone can rev up a man's sex drive, increase risk-taking behaviours and raise the need for social dominance. Those factors can help win a mate but are poor traits when it comes to raising a baby, which requires cooperation from both parents. "Our study shows that human fathers are biologically wired to help with the job," said Mr Christopher Kuzawa of Northwestern University, who worked on the study published in the Proceedings of the National Academy of Sciences. Prior studies have shown fathers tend to have lower testosterone than men who have no children but it was not clear whether fatherhood was the cause or that men with lower testosterone were more likely to become fathers. The Northwestern study tried to ...

Full article: http://www.todayonline.com/World/EDC110914-0000385/Father...

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