A lot of longevity strategies are snake oil. But two hacks may have something to them

EDITOR’S NOTE: CNN Original Series “Kara Swisher Wants to Live Forever” follows journalist Kara Swisher as she explores the booming business of life extension and the people determined to defy death. Watch the second episode at 9 p.m. ET Saturday, and stream the premiere episode on the CNN app. You...

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