The Science of Longevity with Dr. Chris Renna | Rational Wellness Podcast 465

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The Science of Longevity with Dr. Chris Renna | Rational Wellness Podcast 465

Longevity Medicine Deep Dive with Dr. Chris Renna: Lifestyle Foundations, Stem Cells, Regenokine & Rapamycin Dr. Ben Weitz welcomes longevity physician Dr. Chris Renna of Lifespan Medicine to discuss evidence-informed longevity and joint regeneration strategies. Renna argues that 90% of aging outcomes still come from diet, exercise (including resistance training), sleep, and psychological perspective, with supplements and hormones as important supports. He explains why stem cells are often overhyped, why many donor cells die quickly, and describes Muse cells as a type that can survive longer, noting Florida’s approval of umbilical cord cells for osteoarthritis and Lifespan’s plans to offer Muse cells. Renna outlines aging as incomplete daily repair beginning around age 30 and reviews Regenokine (autologous serum rich in anti-inflammatory factors/exosomes) as a top-performing joint injection without cartilage regrowth. He covers mitochondrial support, NAD precursors, urolithin A, peptides, and discusses low-dose intermittent rapamycin plus fisetin to reduce senescent cells, ending with a message of gratitude and presence.

00:00 Show Intro 

00:59 Meet Dr Chris Renna

02:17 Origins of Functional Medicine

03:42 Longevity Today and Tomorrow

05:49 Stem Cells Overhype

09:59 Why People Go Abroad

13:28 How Stem Cells Really Work

15:55 Muse Cells Explained

19:59 Aging Starts at 30

24:05 Joint Injection Breakthroughs

30:55 Regenokine and Exosomes

37:39 Diet and Food Quality

40:06 Clean Eating Basics

40:30 Hydration And Daily Movement

41:41 Sleep Skills And Wind Down 

43:31 Stress Perspective Reset

45:49 Core Supplements Stack 

47:23 Mitochondria Boosters

49:20 Peptides Hype And Risks

52:43 FDA Shifts And Hormones

57:21 Rapamycin Senescence Plan 

01:03:01 Longevity Vision And Wrap Up

 Dr. Chris Renna is a physician and the founder of Lifespan Medicine, a practice focused on proactive, personalized approaches to health optimization and longevity. With over 30 years of clinical experience, Dr. Renna has been a pioneer in integrative and anti-aging medicine, emphasizing the interconnected roles of the immune, endocrine, and nervous systems in maintaining long-term health. His website is www.lifespanmedicine.com

Dr. Ben Weitz is available for Functional Nutrition consultations specializing in Functional Gastrointestinal Disorders like IBS/SIBO and Reflux and also Cardiometabolic Risk Factors like elevated lipids, high blood sugar, and high blood pressure. Dr. Weitz has also successfully helped many patients with managing their weight and improving their athletic performance, as well as sports chiropractic work by calling his Santa Monica office 310-395-3111.