Dan Buettner, in his book, "The Blue Zones: Lessons for Living Longer from the People Who've Lived the Longest" reveals the factors in common among cultures that have very long life expectancies. In his lecture, televised on CNN, he delves into the cultures of the highlands of Sardinia (which has the longest male life-expectancy), Okinawa (which has the longest female life-expectancy) and Seventh-Day Adventists (who have the longest life-expectancy in the U.S.). There are 9 factors that he states are common to all these societies:
1) In these societies, people don't perform programmed exercise. They just exercise as part of their daily lives. Okinawans get up off the floor 40+ times a day. Sardinians walk and garden a lot. Seventh Day Adventists take nature walks regularly. The common denominator seems to be a large volume of low-level physical activity.
2) Downshift daily: That means to take some time daily to calm down, meditate, contemplate, or pray.
3) Purpose now: Have a purpose in living, either work, taking care of others, creating something beautiful, etc.
4) Wine in moderation (although the 7th Day Adventists discourage alcohol consumption)
5) Plant-based diet: Meat may be consumed but in relatively small quantities.
6) 80% Full Rule: Stop eating when you feel 80% full.
7) Loved ones come first
8) Belong to supportive groups
9) Right Tribe: Associate with other people who have good living habits