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The Italian island of Sardinia has more than six times as many centenarians as the mainland and ten times as many as North America. Why? According to longevity researcher Susan Pinker, it's not a sunny disposition or a low-fat, gluten-free diet that keeps the islanders alive so long -- it's their emphasis on close personal relationships and face-to-face interactions. Learn more about super longevity as Pinker explains what it takes to live to 100 and beyond. Check out more TED talks: The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and more. Follow TED on Twitter: Like TED on Facebook: Subscribe to our channel:
