TODAY visits the ‘blue zone’ of Greece where people live to 100

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Launching “Eating to 100 TODAY,” a series about the secrets of a long and healthy life, NBC News special anchor Maria Shriver visits a remote Greek island that is one of the five “blue zones” on Earth with the highest percentage of people living healthy lives to age 100. She shares their diet secrets, which include greens and whole grains in lieu of carbohydrates.