http://www.physorg.com/news66407690.html
Geez, WHEN are those social "scientists" going to realize that deductive Aristotelian theory isn"t worth the paper it takes to print it. I can come up with just as "plausible" an explanation for longevity differences using a different set of canards, cherry-picked observations and "common sense." In fact, there are an infinite number of them, all, in the absence of testable and tested general assertions, equally likely.
What makes a theory scientific is that it makes testable assertions, eh? So what assertion does this theory make that we could empirically test, and thereby possibly rule out this theory? Zip, as far as I can tell.
So this isn"t science. It"s just speculation. Science fiction. For Amusement Purposes Only.