The journal New Scientist has an article up about a study on the effects of polygamy on longevity titled “Polygamy is the key to a long life.” The researchers focused on men with multiple wives and they appear to use country-level data on lifespan and correlate that with a scale they create to measure how accepted polygamy is in a nation. According to the article:

After accounting for socioeconomic differences, men aged over 60 from 140 countries that practice polygamy to varying degrees lived on average 12% longer than men from 49 mostly monogamous nations, says Virpi Lummaa, an ecologist at the University of Sheffield, UK.

It appears to be a crude way of measuring it (something the researchers admit) , but as exploratory research it does provide a path for additional study.

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