 So what are the health factors these folks have in common? For starters, they primarily eat a plant-based diet. Beef doesn't play a big role. Blue zoners walk everywhere. Typical geography in these places includes plenty of hills, so folks are getting their steps in on an incline. A strong sense of community also plays a role in their longevity. Loneliness is a huge cause of death in old age. Blue zoners stay engaged with the folks around them.