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In this episode of the Thyroid Pharmacist Healing Conversations podcast, I explore a topic that may surprise many people dealing with Hashimoto’s, IBS, migraines, or other chronic symptoms: food sensitivities may not actually be the root cause of your symptoms.
For years, elimination diets have been considered the gold standard for identifying trigger foods, and I’ve personally seen how removing certain foods can dramatically improve symptoms in the short term. But over time, I’ve noticed something concerning: many people who eliminate more and more foods eventually find themselves on extremely restrictive diets – and their symptoms return or even worsen.
In this solo episode, I share my evolving perspective on food sensitivities and explain why they are often a symptom of deeper imbalances rather than the true root cause. We dive into the underlying issues that can drive food reactions – including gut infections, enzyme deficiencies, microbial imbalances, nutrient deficiencies, and intestinal permeability – and most importantly, how to address them so you can expand your diet and restore your health.
What you’ll learn in this episode:
- Why food sensitivities are often a symptom – not the root cause – of chronic illness. While elimination diets can temporarily reduce symptoms, reacting to dozens of foods is usually a sign of deeper issues like intestinal permeability, gut infections, or immune dysregulation rather than the foods themselves.
- How gut infections like Blastocystis hominis can drive food reactions and IBS symptoms. This common protozoal infection may be present in up to 73 percent of people with IBS (according to various studies) and can trigger sensitivities to foods like sugar, wheat, dairy, and fruit until the infection is properly treated.
- The hidden digestive deficiencies that can make healthy foods feel intolerable. Issues like low pancreatic enzymes, bile acid deficiencies, or poor fat digestion can lead to symptoms after eating fatty foods and may indicate the need for digestive support rather than eliminating those foods entirely.
- Why reactions to sulfur foods, histamine foods, or FODMAPs often signal metabolic or gut imbalances. Sensitivities to foods like garlic, onions, fermented foods, or cruciferous vegetables may indicate nutrient deficiencies or microbial overgrowth rather than true intolerance.
- How oxalate and salicylate sensitivities can develop – and what actually resolves them. These reactions are frequently linked to issues like mold exposure, Candida overgrowth, or nutrient deficiencies, rather than the foods themselves.
- The supplements and gut-support strategies that can help restore food tolerance. Supporting digestive enzymes, microbial balance, intestinal lining repair, and nutrient status can help many people gradually reintroduce foods they once reacted to.
I’m excited to share my new book, IBS: Finding and Treating the Root Cause of Irritable Bowel Syndrome, is out now! Many people with Hashimoto’s have irritable bowel syndrome, which can be both a root cause and symptom of autoimmunity. This comprehensive guide reveals how irritable bowel syndrome is often a catch-all diagnosis that overlooks treatable root causes. It offers a step-by-step approach to help readers understand what’s really driving gut symptoms, and how to create a personalized plan to restore gut health and overall wellness.
Freebies with Book Preorder – Available Through 3/24/26
- Figuring Out Food Sensitivities Guide – A guide on identifying and resolving food sensitivities included with the purchase of IBS: Finding and Treating the Root Cause of Irritable Bowel Syndrome.
- Gut Symptom Solutions Guide – A resource covering strategies to address digestive symptoms and common root causes.
- Inflammation and Inflammatory Bowel Disease Chapter – An exclusive bonus chapter discussing strategies to help calm inflammatory bowel disease symptoms.
Supplements We Discussed
- Pancreatic Enzymes – Digestive enzymes that help break down fats and improve nutrient absorption in individuals with pancreatic enzyme insufficiency. Consider Rootcology Pancreatic Enzymes Plus.
- Creon (Prescription Pancreatic Enzymes) – A prescription enzyme replacement therapy used when the pancreas does not produce enough digestive enzymes.
- Ox Bile Supplements – Provide bile acids that help emulsify and digest dietary fats. Consider Pure Encapsulations Pancreatic Enzyme Formula.
- Molybdenum – Supports sulfur metabolism by activating the sulfur oxidase enzyme pathway.
- Butyrate – A short-chain fatty acid that nourishes the intestinal lining and supports a healthy microbiome. Consider Rootcology Butyrate Balance.
- Hydroxycobalamin (Vitamin B12) – A form of vitamin B12 that supports detoxification pathways and sulfur metabolism. Consider Adenosyl/Hydroxy B12 by Pure Encapsulations.
- L-Carnitine – Supports mitochondrial energy production and sulfur metabolism pathways. Consider Rootcology Carnitine Blend.
- DAO Enzyme – Helps break down dietary histamine and can reduce symptoms of histamine intolerance. Consider Seeking Health Histamine Digest.
- Vitamin B6 (P5P) – A bioactive form of vitamin B6 required for histamine metabolism and oxalate processing. Consider Rootcology P5P.
- SAM-e (S-adenosyl methionine) – Supports methylation and histamine metabolism pathways. (Note: This is not recommended if you have bipolar disorder.)
- Magnesium Citrate – Can help neutralize oxalates in the digestive tract and support regularity. Consider Rootcology Magnesium Citrate Powder.
- Calcium Citrate – Binds oxalates in the gut and reduces their absorption.
- Spore-based Probiotics: Spore-based probiotics can increase gut diversity and resilience by boosting the growth of other beneficial flora. Consider Rootcology Spore Flora or MegaSporeBiotic Probiotics.
- Dr. Ohhira’s Probiotics – A fermented probiotic formula that supports microbial balance and digestive health.
- Saccharomyces boulardii – A beneficial yeast that helps restore gut immune balance and combat infections. Consider Rootcology S. Boulardii.
- Zinc Carnosine – Supports healing of the intestinal lining and helps repair intestinal permeability. Consider Rootcology HP Restore.
- Systemic Enzymes – Enzymes taken on an empty stomach to help break down circulating immune complexes and reduce inflammation. Consider Rootcology Broad Spectrum Enzymes.
- Oil of Oregano – A botanical antimicrobial often used in protocols to reduce bacterial or fungal overgrowth.
- Berberine – A plant compound with antimicrobial properties used in gut health protocols. Consider Rootcology Berberine.
Other Tools and Resources
- Alletesse Food Sensitivity Testing – The 96 Food Panel and 184 Food Panel tests check for IgG (a branch of the immune system that mediates food sensitivities as well as Hashimoto’s) reactions to common foods.
- GI-MAP Stool Test – A comprehensive stool analysis used to detect pathogens, gut infections, and microbial imbalances.
- Gut Zoomer Testing – Advanced stool testing used to evaluate digestive enzyme levels and gut microbiome balance.
- Elemental Diet – A short-term therapeutic diet used to starve bacterial overgrowth in the small intestine. Debbie Steinbock is an expert in this and covers it in podcast episode #68 – please give it a listen and see the show notes for more resources!
- Rifaximin – A prescription antibiotic commonly used to treat small intestinal bacterial overgrowth (SIBO). Read more about SIBO treatment options here.
- Yogi Ginger Tea – A ginger-based tea that can support digestion and reduce bloating after meals.
Books and Articles About IBS, Gut Health, and Food Sensitivities
- IBS: Finding and Treating the Root Cause of Irritable Bowel Syndrome book by Dr. Izabella Wentz – This is the exact framework I wish I had years before my own IBS diagnosis.
- Hashimoto’s: The Root Cause book by Dr. Izabella Wentz – A roadmap to identify and remove the triggers associated with causing thyroid autoimmunity, Hashimoto’s, and hypothyroidism.
- Hashimoto’s Protocol book by Dr. Izabella Wentz – A practical pathway for healing and reversing the autoimmune damage at the root of the disease. It includes a quick-start two-week detox, advice on supplements to support the liver, an adrenal recovery plan, a personalized plan with foods, supplements, and other lifestyle interventions, tailored to each body’s own unique Hashimoto’s triggers.
- Healing Food Sensitivities
- Food Sensitivities and Hashimoto’s
- Gut Microbiome Dysbiosis and Hashimoto’s
- 6 Root Causes Behind Leaky Gut and Autoimmunity
- Intestinal Permeability, Autoimmunity, and the Hashimoto’s Connection
- The Fundamental Gut Health Protocol
Get the Full Episode Transcript
Let’s Connect!
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Got questions? Drop them in the comments! 🙂
About Our Host
Dr. Izabella Wentz
Dr. Izabella Wentz is a compassionate, innovative, solution-focused integrative pharmacist dedicated to finding the root causes of chronic health conditions. Her passion stems from her own diagnosis of Hashimoto’s thyroiditis in 2009, following a decade of debilitating symptoms.
Dr. Izabella Wentz has written several best-selling books, including the New York Times bestseller Hashimoto’s Thyroiditis: Lifestyle Interventions for Finding and Treating the Root Cause, the protocol-based #1 New York Times bestseller Hashimoto’s Protocol: A 90-Day Plan for Reversing Thyroid Symptoms and Getting Your Life Back, the Wall Street Journal bestseller Hashimoto’s Food Pharmacology: Nutrition Protocols and Healing Recipes to Take Charge of Your Thyroid Health, and Adrenal Transformation Protocol. Her latest book, IBS: Finding and Treating the Root Cause of Irritable Bowel Syndrome, is available here.
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