Spend enough time on Longevity Tok, and you’ll soon stumble across the Blue Zones: the five regions said to have the highest concentration of centenarians anywhere in the world.
Since the term was first coined in 2000, when demographer Michel Poulain and epidemiologist Gianni Pes drew circles on a map of Sardinian villages in blue pen, they’ve become quite famous - studied for the biological and lifestyle factors which contribute to their population’s long and healthy lives. It led to the creation of the Power Nine - nine common lifestyle habits said to be shared by these five populations, and which many have sought to live by in an effort to age well.