What if the most meaningful breakthroughs in longevity aren’t happening in the spotlight—but quietly, behind the scenes? In this episode, Brad Younggren, CEO of Circulate Health, offers a clear-eyed look at what’s actually driving progress in healthspan—not the headlines, but the infrastructure, data, and clinical realities shaping the field. From the evolution of therapeutic plasma exchange to the role of biomarkers, environmental exposures, and real-world data, this conversation explores what it takes to move beyond ideas and into measurable outcomes. It’s a grounded perspective on where longevity science stands today—and what it will take to make it scalable, credible, and accessible.