
Okinawa, Japan—the islands once called the “land of the immortals”—recorded just 37 centenarians in 1975. By 2022 there were 1,334, including 1,182 women, who accounted for nearly 89 per cent of everyone over 100.
Okinawa's centenarian count rose enormously, but different counting systems, a striking sex split and a postwar cohort reversal make the history more revealing than a longevity recipe.







