What happens when elite fitness doesn't equal health? In this episode of Extend, Ben Greenfield joins me to discuss how blood tests showed he was metabolically compromised despite being an Ironman competitor, and shares the comprehensive testing protocols that changed his approach to wellness.

We discuss the critical difference between fitness and health, Ben's biomarker testing strategy using wearables and lab work, and why he embraces hormesis - the concept that controlled stressors like heat, cold, and plant compounds build resilience. We also dive into why dietary diversity beats restrictive elimination diets and the importance of cycling supplements rather than continuous use.

Ben Greenfield is a biohacker, bestselling author of "Boundless," podcast host, and founder of Kion supplements. A former professional athlete turned health optimization expert, he now coaches high-achievers on personalized health protocols.

We Also Discuss:

• Why Fitness and Health Are Not the Same Thing (Despite What Most Athletes Think)

• The FASTER Study That Proved Fat Adaptation Could Rewrite Exercise Physiology

• The Complete Testing Protocol: Wearables, Blood Panels, and Genetic Analysis

• Why Heart Rate Variability Is Your Best Daily Stress Indicator

• The Problem With Continuous Supplement Use vs. Strategic Cycling

• How Microplastics Are Destroying Our Bodies (And What Actually Works to Remove Them)

• The Truth About Alcohol as a Hormetic Stressor in Small Doses

• How to Use CGMs Beyond Just Glucose Monitoring

• Why Most Gut Microbiome Tests Give Useless Food Recommendations

Thank You for Our Sponsors:

Function Health: Learn more and join using functionhealth.com/drshah. The first 1000 get a $100 credit toward their membership. Visit www.functionhealth.com/drshahn or use gift code DRSHAH100 at sign-up to own your health.

Timeline: 20% off your order. Go to timeline.com/drshah

Learn more about Dr. Shah:

Website: https://www.drshah.com/

Clinic: https://www.next-health.com/ https://www.instagram.com/nexthealth/

Instagram: https://www.instagram.com/darshanshahmd/

Learn more about Ben Greenfield:

Instagram: https://www.instagram.com/bengreenfieldfitness/

Website: https://boundlessbook.com/