When men outnumber women, they die sooner?

August 11, 2010 9:20:11 AM PDT
Men who face plenty of competition to find a mate have slightly shorter lives than those who don't.

New research shows that when men outnumber women it affects male longevity by an average of about three months.

Three months may not seem like much, but it is comparable to the effects of taking a daily aspirin, or engaging in moderate exercise.

Researchers from Northwestern University, the University of Wisconsin-Madison and the Chinese University of Hong Kong found that the more imbalanced the ratio of men to women, the more pronounced the effect.

This study is in this month's edition of Demography.


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