Why do Okinawans live so much longer and healthier than those of us in the US? From a Fitness-Web article:

There are islands in Japan where the healthiest population exist on the earth. They are the islands of Okinawa, an archipelago southwest of Japan. Here people suffer 80% fewer incidents of breast and prostate cancer, less heart attacks, lower cases of diabetes and lower rates of colon and ovarian cancer than America.