Blue zones
I recently came across a Netflix series: ‘Live to 100: Secrets of the Blue Zones’. The series discusses so-called ‘Blue Zones’ – a zone with the highest life expectancy or the highest proportion of people who reach age 100 (i.e., centenarians). Five Blue Zones have been identified in the world – the Barbagia region (Sardinia), Ikaria (Greece), Nicoya (Costa Rica), Seventh Day Adventists (US) and Okinawa (Japan). The chart below indicates the share of the population that are centenarians in Okinawa