Click on this link for a fun and interesting age tabulator. As you answer various questions about health, diet, etc. your own personal life expectancy keeps changing in a window in the upper right corner of the computer screen.
See how your lifestyle could affect you in the years to come. You can also enter incorrect information to see how you your longevity would be affected if you made changes in your lifestyle.
Even if this is not real accurate it is a fun game.