People who live to 100 have 3 drinks in common, longevity expert says

In the world’s "blue zones" — regions such as Sardinia, Italy, and Okinawa, Japan, known for unusually high concentrations of long-lived residents — researchers have studied dietary and lifestyle habits for clues to healthy aging and longevity.

In a recent video post, longevity researcher Dan Buettner highlighted three beverages commonly consumed in blue zones — and studies offer some clues about how each may affect health and longevity.

Buettner ranked water first among his three longevity drinks.