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 psychologist Susan Pinker, it's not a sunny disposition or a low-fat, gluten-free diet that keeps the islanders healthy -- 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.

Susan Pinker: The secret to living longer may be your social life

The secret to living longer may be your social life

Sardinia's secret to longevity lies not in diet or exercise, but in its rich social fabric and face-to-face interactions.

Face-to-face contact releases neurotransmitters that act like a 'vaccine' against disease, highlighting the power of social bonds.

In Sardinia's blue zone, longevity thrives through social cohesion and face-to-face interaction, not just healthy diets.