Barack Obama on the challenge to democracy
Amanpour
00:00
The Four Horsemen of Death
CNN's John Sutter studied people who were 100 years old. Was there something that they had in common that we can apply in our lives? The one thing that is common to all centenarians is that from the standpoint of chronic disease they're about 20 to 25 years younger than their birth certificate age says. We have to use nutrition, exercise, sleep, stress, all those other things as tools to get what they get for free genetically.
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