Longetivty

I found a great article on the net


http://adventure.nationalgeographic.com/2009/06/live-longer-dan-buettner-text/1


Happiness could be the key
The effect of unhappiness on your body is about as bad for you as a smoking habit. An unhappy person is about three times more likely to die in a given year than a happy person, for a variety of reasons: suicide, chronic stress, illness. If we can extract happiness secrets from the happiest populations, like we did with Blue Zones, we will help people raise their life expectancy.