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David Sinclair, PHD is a Professor in the Department of Genetics at Harvard Medical School and author of the new book, " Lifespan: Why We Age and Why We Don't Have To."

Dr. Peter Attia is the host of The Peter Attia Drive podcast

Dr. Peter Attia is the host of The Peter Attia Drive podcast and the founder of Attia Medical, a medical practice with offices in San Diego and New York City, focusing on the applied science of longevity and optimal performance.