1201: Your Cells Are Always Building A Whole New You

In the last year, you’ve basically replaced your body weight in new cells. So yes, it’s a new year, new you. To ring in 2026, we’re talking about starting anew, and drawing inspiration from tiny worms that embody the ultimate growth mindset—they can regrow a whole body from just a tiny piece of their tail. In this festive episode, Host Flora Lichtman talks with biologist Alejandro Sánchez Alvarado, a pioneer in the field of regeneration, about the science of regeneration and the biology lessons we can carry into the new year. Guest: Dr. Alejandro Sánchez Alvarado is a biologist and president and chief scientific officer of the Stowers Institute for Medical Research in Kansas City, Missouri. Transcripts for each episode are available within 1-3 days at .Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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