Why Women Live Longer Than Men:
"...It’s no secret that mortality due to accidents and risky behavior is much higher in young men, particularly those in their late teenage years and early 20s.
This, by the way, is not news to insurance companies.
It’s also true that men die earlier than women, regardless of their environment or lifestyle, and are often more susceptible to some cancers and heart disease at an earlier age.
In fact, men are at a higher risk than women when it comes to most of the top 15 contributing sources of mortality in the United States—which account for nearly 80 percent of all deaths.
Evolutionary factors are clearly at play.
The question is why.
What is natural selection’s deal with men?
...As it turns out, shorter lifespans and higher male mortality risk are quite common in many species..."