David Sinclair, AO, PhD, is a longevity scientist, Professor of Genetics at Harvard Medical School, author of the book "Lifespan: Why We Age—and Why We Don't Have To," and host of the "Lifespan" podcast.www.youtube.com/c/davidsinclairpodcast  www.simonandschuster.com/books/Lifespan/David-Sinclair/9781501191978  https://lifespan.com  https://davidasinclair.com Perplexity: Download the app or ask Perplexity anything at https://pplx.ai/rogan. Visit https://superpower.com/rogan for $20 off your membership. This video is sponsored by BetterHelp. Visit https://BetterHelp.com/JRE Learn more about your ad choices. Visit podcastchoices.com/adchoices