Extend Podcast with Darshan Shah, MD 97. Ben Greenfield: How to Actually Optimize Your Biology Without Going Extreme
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Sep 23, 2025 Ben Greenfield, a biohacker and bestselling author of "Boundless," reveals his journey from elite athlete to understanding metabolic health. He discusses the vital distinction between fitness and health, sharing how blood tests transformed his wellness approach. He emphasizes the role of biomarker testing, wearables, and the significance of cycling supplements for optimal results. Ben also explores the concept of hormesis—how controlled stressors can enhance resilience—and raises awareness about the dangers of microplastics in our bodies.
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Fitness ≠ Health Revelation
- Ben Greenfield discovered he was metabolically unhealthy despite elite Ironman fitness after blood tests showed high TSH, low T3, low testosterone, high CRP, and low vitamin D.
- That wake-up prompted him to change training, nutrition, and write about health vs. fitness in Beyond Training.
Build A Wearable-Backed Testing Protocol
- Use a wearable daily for HRV, sleep, body temperature, and activity to monitor stress and recovery.
- Pair wearables with annual blood, hormone, metabolomics, stool, food-allergy, and DNA tests for personalized plans.
Testing Frequency Guide
- Order a basic CMP/CBC quarterly and deeper metabolomics, hormones, stool, and food-allergy panels annually.
- Repeat gut or targeted tests sooner if symptomatic or after heavy travel.
