Also, there's a very old group of citizens on an island near Italy/Greece, one of the two. I saw a special on it, where there are many people over 100, and they still work as shepherds and such, enjoying active lives.
They found small amounts of radon there, in hot springs that the people use. We think of that as deadly, but they think that in small amounts it might prove beneficial.
They've lived there for generations. Also, they do eat a form of Mediterranean diet.
Love All Life; Thank You For Posting! :)