Nick talks to biochemist Joe Baur, PhD, whose lab at the University of Pennsylvania studies the molecular mechanisms of aging and metabolism. These discuss: aging as a passive vs. regulated process; mechanisms of aging (DNA mutations, oxidative stress, etc.); NAD and its role in normal physiology; the biology of sirtuins; rapamycin as an immunosuppressant & modulator of aging; the effects of diet & caloric restriction on aging; the potential slowing and reversing aging, and more.Support the showSign up for the free weekly Mind & Matter newsletter:[https://mindandmatter.substack.com/?sort=top]Learn how you can further support the podcast: [https://mindandmatter.substack.com/p/how-to-support-mind-and-matter]Become a Premium Subscriber to access full content library, including full premium episodes:[https://mindandmatter.substack.com/subscribe?utm_source=menu&simple=true&next=https%3A%2F%2Fmindandmatter.substack.com%2F]Try the Lumen device to optimize your metabolism for weight loss or athletic performance. Use code MIND for $50 off:[https://www.lumen.me/shop?fid=8731&utm_source=influencer&utm_medium=influencer&discount=MIND]