Why Your Brain Feels Broken: The Metabolic Truth Behind Burnout and Depression with Dr. Robin Berzin | E217

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What if your anxiety, brain fog, and burnout aren't mental health problems, but metabolic ones?In this episode, Dr. Robin Berzin joins Dr. David Perlmutter to make the case that the brain and body are not separate systems, and that treating them as if they are is costing millions of people their health.

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00:00 - Introduction

00:46 - Brain Defenders: A New Framework for Brain Health

03:00 - Welcoming Dr. Robin Berzin

05:23 - Why Smart, Motivated People Still Feel Terrible

08:37 - From Columbia Med to Founding Parsley Health

12:15 - The Problem With 15-Minute Appointments and Stacks of Prescriptions

14:37 - What Is Functional Medicine, Actually?

17:07 - Precision Medicine: Treating the N of One

19:45 - How AI Is Changing the Doctor's Ability to Connect the Dots

22:41 - State Change: Shifting Your Mind Through Your Body

25:35 - Why Anxiety and Depression Start in the Body

27:09 - 40 Hz Light Therapy and Cognitive Decline

29:43 - Exercise, Sugar, and Nutrient Deficiencies as Mental Health Levers

32:30 - SSRIs as a Tow Truck, Not a Destination

34:16 - Psychedelics and Trauma: Tools in the Toolkit

36:01 - Metabolic Flexibility and Why Losing It Wrecks Your Hormones

38:04 - Sleep, Wearables, and the One Night That Breaks Your Metabolism

40:37 - Continuous Glucose Monitors as a Mirror for Your Choices

42:19 - 3X4 Genetics: Your DNA Is a Roadmap, Not a Verdict

44:37 - Alzheimer's as Type 3 Diabetes: The Metabolic Brain Connection

46:21 - The Lab Work Your Doctor Isn't Ordering

49:22 - Fasting Insulin, Heavy Metals, and the Tests That Actually Matter

51:14 - What's Next: AI, Wearables, and the Future of Functional Medicine

53:56 - If You Feel Stuck: Own Your Biological Data

55:34 - Closing Thoughts

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Dr. Robin Berzin, MD is a functional medicine physician and health tech entrepreneur leading the push to bring root-cause, precision medicine into mainstream healthcare. She earned her MD at Columbia, completed internal medicine residency at Mount Sinai, and trained in functional medicine under the field's top practitioners. Before medicine, she produced the Oprah and Friends Dr. Oz Radio Show, and she later worked in health tech during med school, sharpening her understanding of how digital platforms could expand access to personalized care.Today, she is founder and CEO of Parsley Health, the only national functional and longevity medicine clinic in the U.S., delivering virtual care across all 50 states plus physical clinics in NYC and LA. Under her leadership, Parsley has grown to nearly 30 clinicians and 40 health coaches and nurses, treated over 50,000 patients, and built a team-based, insurance-accessible model that puts functional medicine within reach beyond the wealthy. She also sits on the medical advisory board of Whoop.She is the author of State Change, which challenges the divide between mental and metabolic health and offers a practical framework for transforming mood, energy, and cognition through the body. Her work is widely featured across major health and wellness media, and she is recognized as a defining voice in the future of preventive, personalized medicine.

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