In this episode, Dan speaks with Dr. Mike West, CEO of AgeX Therapeutics. Here, we discuss a variety of important questions related to the science and potential of stem cells to positively influence human health including: The distinction between progenitor cells and stem cells; what goes wrong with stem cells during senescence; current clinical uses of stem cell therapies; what Dr. West’s team is working on at AgeX; and the future of stem cell therapies.