Blue zones are regions in the world where people are claimed to live, or have recently lived, longer than average.
Five blue zones suggested are: Okinawa Prefecture, Japan; Nuoro Province, Sardinia, Italy; the Nicoya Peninsula, Costa Rica; Icaria, Greece; and Loma Linda, California, United States.
(https://en.wikipedia.org/wiki/Blue_zone)
Some areas having been identified as blue zones: /09 2023
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