I'm posting this to avoid a hijack of the "How do you explain to one of them..." threads on the cycling board where the interest in life expectancy was raised (particularly given reference to a high mortality rate for Research PHd's...which honestly shocks me)

So, here's a life expectancy counter:

http://gosset.wharton.upenn.edu/mort.../CalcForm.html

It doesn't have precise occupational tables, but it considers many factors including habits, health, exercise, etc.

My life expectancy is 86+ years...but I'm adopted and don't have a family medical history.