In his new wellness book, "Eat Your Ice Cream: Six Simple Rules For a Long and Healthy Life," Dr. Zeke Emanuel, MD, PhD, a prominent oncologist and health policy expert, goes beyond the basics of eating, exercise and sleep. He talks with Norah O'Donnell about the importance of being happy, social engagement, and recommended behaviors (like "don't be a schmuck") that can benefit longevity. | CBS Sunday Morning

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