Okinawa Centenarian Study

Okinawa, Japan has one of the world's highest concentrations of centenarians. Traditional Okinawan diet involves eating until 80% full ('hara hachi bu') - a cultural form of caloric restriction. This provides observational evidence that lifelong moderate restriction correlates with extreme longevity in humans.

For business applications, Okinawa demonstrates that cultural restriction practices can be sustained for decades without feeling like deprivation - a model for organizations building sustainable constraint into their operating culture.