Blue zone

Blue zones are regions in the world where people are claimed to live longer than average. Examples of blue zones include Okinawa Prefecture, Japan, Nuoro Province, Sardinia, Italy, the Nicoya Peninsula, Costa Rica, and Icaria, Greece. The name "blue zones" derived simply during the original survey by scientists who "used a blue pen on a map to mark the villages with long-lived population."

For the band, see Blue Zone (band). For the parking zone regulations, see Disc parking. For parts of the United States which vote majority Democrat, see Red states and blue states.

The concept of blue zones having exceptional longevity has been challenged by the absence of scientific proof, and by the substantial decline of life expectancy during the 21st century in an original proposed blue zone, Okinawa.

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