Dr. Will Haas on Cellular Health: Toxins, Testing, Foundational Supplements, and Peptides for Healthspan Jason interviews Dr. Will Haas about why he chose integrative/functional medicine after realizing medical school focused on “sick care” rather than health optimization, a passion rooted in his youth and athletic background and influenced by mentor Andrew Weil’s view that it’s simply “good medicine.” Haas explains his clinical approach starts with lifestyle foundations (sleep, nutrition, stress, social connection) plus targeted diagnostics, listening for cellular dysfunction patterns like mitochondrial energy deficits that can present as brain fog or fatigue. He emphasizes toxins (including mold/mycotoxins), gut-driven inflammation/dysbiosis, and immune dysregulation as key disruptors, advocating “test, don’t guess” before interventions. They discuss practical basics like hydration, personalized nutrition, common supplementation deficiencies he sees (magnesium, vitamin D, B12/folate, vitamin C, omega-3s), and a cautious, mechanism-based view of peptides, highlighting GLP-1s’ early impact and epitalon’s potential role in optimization and circadian rhythm support. Haas shares his own routine and directs listeners to Vyve Wellness for a discovery call. 00:00 Chasing Performance Inputs 00:21 Why Integrative Medicine 01:28 Meet Dr Will Haas 02:40 Olympics Spark Origin Story 05:14 Healthcare Versus Sick Care 07:18 First Patient Assessment Basics 10:27 Cellular Patterns Not Labels 13:44 Brain Fog Wake Up Call 15:33 Toxins Gut And Mold 21:00 Test Before You Detox 23:16 Food Hydration Personalization 27:38 Dark Chocolate Heavy Metals 28:22 Fiber Goop Breakdown 31:24 Gut Health Reality Check 33:00 Avoiding Optimization Burnout 33:46 Supplements Need Data 36:07 Common Deficiencies Explained 39:16 Antioxidants Need Balance 40:35 Peptides Primer and Hype 42:08 Evidence Based Peptide Lens 44:50 GLP1s Sparked Interest 48:47 Peptides by Pathway Not Stacks 50:22 Epitalon and Circadian Reset 51:30 Older Patients and Root Causes 54:10 Doctor Daily Routine 57:05 Training Mindset and Stress 58:27 Wrap Up and How to Work Together 01:00:46 Sponsor Message and Disclaimer