In this special listener Q & A episode, resident anti-aging guru Dr. Jeff answers real-world questions about pain, injury, ageing, and longevity. A spine fellowship-trained neurological surgeon and regenerative stem cell medicine specialist, Dr. Gross draws on decades of clinical experience treating athletic and degenerative injuries of the spine, hips, knees, shoulders, and more. We explore stem cells, biohacking, precision medicine, and conservative, non-surgical approaches to improving health-span - cutting through hype to focus on what actually works, what's promising, and what people should be cautious about. Clear, grounded, and clinically informed, this episode is a practical deep-dive into modern regenerative medicine - answered directly, honestly, and without fluff. Enjoy.