KI

Or is it KIO3?  Anyway...

You've all panicked and taken a whole bottle of Potassium Iodide pills haven't you?  And now you are finding you can't order them off the internet for love or money?  So what will you do if they say it's time to take you KI pills become the plume is overhead?

Relax.  Eat 3 bananas.  Oops, now you've doubled your radiation exposure.  Or it would be doubled if you lived about 20 miles or so from one of the stricken power plants in Japan.
Want to cut your cancer risk way back?  Stop smoking.  The Japanese reactors aren't going to mean anything to you if you live in the U.S.A., chances are. 

Radiation ain't black magic.  Your risk from zombies is much greater.

(T-bolt?  Do YOU have KI pills, just in case?  Well... let's just say, 'better safe than sorry'.  I've certainly not felt the need to pop em like Tic Tacs)