blue zones

A doctor's best advice for how to prevent illness: Keep it simple, and emulate the lifestyles of the healthiest people in the world.

Researchers studying the Blue Zones, five regions around the world with lots of centenarians, have come up with this rule: "Drink coffee for breakfast, tea in the afternoon, wine at 5 p.m."

The centenarians living in Blue Zones aren't drinking Ensure or eating chocolate ice cream. Instead, many are drinking wine, and all are eating beans. But living to 100 isn't just about diet.