I didn't know this, or if I have read it before, I'd forgotten:
Compared to the average three year life span of a common rat, the 10 to 30 year life of the naked mole rat, a subterranean rodent native to East Africa, is impressive. And compared to the human body, the body of this rodent shows little decline due to aging, maintaining high activity, bone health, reproductive capacity, and cognitive ability throughout its lifetime. Now a collaborative of researchers in Israel and the United States is working to uncover the secret to the small mammal's long — and active — lifespan.If the secret turns out to be be "live naked and be a rat", I expect many men would find that acceptable. The living underground in the dark might be the killer, though.