What is the secret of long-lived people?! In a world where diets and health advice change faster than the seasons, the oldest people on the planet seem to follow simple but effective rules for living long and healthy lives. These people come from special regions of the world known as 'blue zones' where living a hundred years or more is the norm, not the exception. The Blue Zones include places like Japan, Costa Rica, Italy, Greece, and California, where longevity is the result of a combination of genetics, environment, and of course, diet.