Aug 31, 2026 · 1h 18m
IBS care shifts from exclusion to precise, positive diagnosis
#538: More Than a Gut Feeling - DGBIs with Dr. Iris Wang
The episode shows how updated DGBI criteria can replace indiscriminate testing with targeted evaluation and practical, nonpharmacologic care.
- 1Rome V sharpens DGBI diagnoses while reducing reliance on the vague label “functional.”
- 2Positive IBS diagnosis pairs symptom criteria with targeted testing rather than exhaustive exclusion.
- 3Commercial microbiome and food sensitivity tests can drive unnecessary treatment, restrictive diets, and anxiety.
Don't miss
Wang explains how abdominophrenic dyssynergia can produce visible, meal-triggered abdominal distension that improves with diaphragmatic breathing or biofeedback.
The brief
Dr. Iris Wang frames disorders of gut-brain interaction as real, diagnosable conditions shaped by communication between the gut and brain—not diagnoses of exclusion or imagined symptoms.
A young woman’s chronic morning diarrhea becomes a test of modern IBS care: assess meaningful risks, use targeted testing, and communicate a positive diagnosis clearly.
Wang rejects commercial microbiome and food sensitivity tests as clinically unvalidated, warning that they can trigger unnecessary antibiotics, restrictive diets, anxiety, and nutritional harm.
Rome V updates refine DGBI terminology and diagnostic boundaries, while treatment emphasizes therapeutic alliance, diet, lifestyle, stress management, and gut-directed behavioral care.
The episode’s most striking clinical turn is abdominophrenic dyssynergia: meal-triggered distension can visibly improve with diaphragmatic breathing or biofeedback.
Abelchia, or inability to burp, adds another emerging diagnosis, with recognition growing alongside uncertainty about its epidemiology and the long-term effects of Botox treatment.
Books & mentions
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