Evolution of Medicine Podcast The Thyroid to IBS Journey
Mar 23, 2026
Dr. Isabella Wentz, a pharmacist and functional medicine expert known as the Thyroid Pharmacist, overcame Hashimoto’s and now focuses on gut-driven chronic illness. She explains how IBS is an umbrella symptom with many root causes. The conversation covers medication and additive triggers, infections like protozoa, enzyme deficits, SIBO, and the gut–thyroid connection.
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Personal Journey From IBS To Hashimoto's
- Isabella Wentz developed her IBS diagnosis during pharmacy school and struggled with disruptive diarrhea that affected classes.
- Her later Hashimoto's diagnosis led her to link gut healing with thyroid recovery and pursue functional approaches.
IBS Is An Umbrella Diagnosis With Treatable Causes
- Isabella frames IBS as an umbrella label with many distinct, treatable root causes rather than a single disease.
- She cites research where 98% of IBS patients had identifiable treatable causes like celiac or enzyme deficiencies.
Review Medications And Additives First
- Do perform a thorough medication review for IBS since drugs like antihistamines, opiates, and certain birth control can drive symptoms.
- Check for food additives like soy lecithin and artificial sweeteners which can act as osmotic laxatives.