Virpi Lummaa, an ecologist at the University of Sheffield, UK, presented a paper to at an international meeting of behavior ecology, that fought that men aged over 60 from 140 countries that practice polygamy to varying degrees lived on average 12 percent longer than men from 49 mostly monogamous countries.

For every 10 years a woman survives past the menopause, she gains two additional grandchildren, Lummaa says. It seems that doting on and spoiling grandchildren aids their survival, as well as furthering some of their grandmother’s genes.

At the risk of over-simplification, Lummaa theorizes that, similarly, the more grandkids a father spawns, the longer he lives, too.

So, in short, woohoo! git yerself a passle of wives. You, like the handsome weasel in the photo above, can live to be 200! (With any luck, half of that will be outside the slammer.)