Again, this is not a conclusive research but a trend that has been tracked down. After a decade they would find men practicing Polygamy dying early and it would cause a reversal of their research. Money should be spent on researches that help the mankind on the whole and not such crap. I mean all of us know how to lead a healthy life free of diseases and that is what raises the average age of an individual in a society. Getting married to a single female or more than one would only make life worser in todays context. Such researches are nothing but a mere hoax and we should absolutely discard them.