What does Japan have to have the oldest population on earth?

 

 

 Respect for Elders and ancestor worship is likely key to longevity in the Japanese elderly. Also, Japan could be the safest place on earth to grow old as well. So, there is respect for elders, ancestor worship, safety and a good diet. Likely together people grow older in a culture like this one.

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The Land of Immortals: How and what Japan's oldest population eats