10 New Oxidative Stress & Gut Health Biomarkers to Know

In this episode of the Root Cause Medicine Podcast, Dr. Kate Kresge welcomes back Dr. Cheryl Burdette—naturopathic physician, educator, and founder of Precision Point Diagnostics—for a deep dive into one of the most evidence-backed biomarker bundles in functional medicine: the Gut, Oxidation & Stress panel. Dr. Burdette explains how ten underutilized but highly predictive biomarkers—including anti-LPS antibodies, zonulin, 8OHdG, F2-isoprostanes, glutathione, and more—can give clinicians a full-body snapshot of inflammation, leaky gut, immune dysregulation, and oxidative stress. She discusses how each marker ties into chronic conditions from cardiovascular disease to autoimmunity to neuroinflammation—and exactly how to intervene when these labs are out of range. This is a must-listen masterclass for any practitioner working with chronic illness, mystery symptoms, or “normal” labs that don’t tell the whole story. You’ll Hear Them Discuss: - Why LPS antibodies are one of the most predictive markers in medicine today - How oxidative stress contributes to cardiovascular disease, autoimmunity, and brain fog - What 8OHdG, zonulin, secretory IgA, and glutathione tell us about barrier integrity - The surprising links between gut dysfunction and GLP-1, mood, and immune balance - Case studies showing biomarker-guided interventions that worked - How to boost glutathione (and what forms work best) - When to re-test and what lab shifts to look for - Advanced testing for food sensitivity: IgG subclasses, complement, and tolerance vs. reactivity - Natural GLP-1 agonists, bitters, fiber, and bile as part of metabolic healing