Men, do you want to live longer?

Thomas Kirkwood writes in Scientific American about why women live longer than men. Fellas, the good news is that you might be able to increase your lifespan by fourteen years. The, uh, bad news:

As many dog and cat owners can attest, neutered male animals often live longer than their intact counterparts. Indeed, the evidence supports the notion that male castration might be the ticket to a longer life. 

Might the same be true of humans?[...] 

The historical record is not good enough to determine if eunuchs tend to outlive normal healthy men, but some sad records suggest that they do. A number of years ago castration of men in institutions for the mentally disturbed was surprisingly commonplace. In one study of several hundred men at an unnamed institution in Kansas, the castrated men were found to live on average 14 years longer than their uncastrated fellows.

[via]