Secrets of longest living people

Ever wondered why some societies live longer than others, and why?

US explorer Dan Buettner traversed the globe in search of the secrets of the longest-living people and what they have in common.

He found the top 5 longest living societies all have the following factors in common:

An environment  that encourages a healthy  diet and  plenty of exercise
Healthy relationships with other people and good psychological health
Looking after gardens
Having a spirit of cooperation
Easily accessible public health
Being valued as seniors by their families and communities  

These people all live in what Buettner describes as Blue Zones. Find out where these zones are and the unique social, psychological and environmental factors that come together in these zones and give the inhabitants the edge on longevity.