The Hidden Causes Of Your Gut Issues (It’s Not What You Think)

17 Sept 2026 · 62 min
1:01:43

In this episode of the Ben Greenfield podcast, certified nutritionist and former paramedic Josh Deck shares his personal journey from strength‑training and emergency medicine to becoming a gut‑health consultant who claims to reverse Crohn’s disease and ulcerative colitis without drugs. Deck challenges the conventional view that inflammatory bowel disease (IBD) is primarily genetic, autoimmune, or idiopathic, citing twin studies, the modest penetrance of the NOD2 gene, and the concept of “missing heritability.” He argues that modern environmental and lifestyle factors—ultra‑processed foods, glyphosate, overuse of antibiotics, mold, chronic stress, trauma, and lack of breastfeeding—drive the dramatic rise in IBD, especially in Western nations (≈60 % of global cases from only 6 % of the world population). Deck outlines his diagnostic philosophy: start with a detailed history, use targeted labs (calprotectin, stool, urine) only when needed, and avoid “down‑stream” testing that treats symptoms without addressing root causes. His therapeutic framework consists of three steps: (1) eliminate active triggers, (2) open and support the body’s seven drainage pathways (liver, bile, lymphatics, skin, sinuses, kidneys/bladder, bowels) to allow true detox, and (3) rebuild only after the terrain is fixed. He discusses adjunctive tools—peptides, parasite protocols, and fecal microbiota transplantation—cautiously, emphasizing that they are useful only when the underlying environment is corrected. Deck reports a 92 % reversal success rate across >700 cases, with typical improvement of 20‑50 % in the first 1‑3 months and 90 %+ by 8‑12 months, though individual timelines vary. He also shares his personal maintenance routine (digestive bitters, rotating probiotics, fermented foods, low‑chemical vegetables, careful posture for defecation) to keep his “princess gut” stable. The conversation blends anecdotal clinical stories, references to scientific literature, and practical advice for listeners seeking to understand and address gut dysfunction.

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