93. Dr. Izabella Wentz: 90% of Thyroid Problems Are Autoimmune - Here's What Doctors Miss

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Sep 9, 2025

Dr. Izabella Wentz, a clinical pharmacist and expert in autoimmune thyroid disease, shares her insights on Hashimoto's in this engaging discussion. She reveals that over 90% of hypothyroid cases are autoimmune, often overlooked by standard tests. Wentz uncovers how artificial sweeteners can trigger thyroid issues and discusses the connection between gut health and thyroid function. Learn about essential tests for early detection and lifestyle strategies, like the power of Epsom salt baths and elimination diets, to reverse thyroid dysfunction.

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ANECDOTE

Personal Journey From Symptoms To Research

Izabella Wentz spent a decade with worsening symptoms before a Hashimoto's diagnosis and limited benefit from thyroid meds.
Her personal journey drove her to research root causes and lifestyle interventions for autoimmune thyroid disease.

INSIGHT

Artificial Sweeteners Can Trigger Autoimmunity

Artificial sweeteners like sucralose can trigger autoimmune thyroid disease in susceptible people.
Some individuals report remission from Hashimoto's after removing artificial sweeteners.

ADVICE

Use Epsom Baths For Magnesium

Take regular Epsom salt baths to replenish magnesium and calm the nervous system.
Use baths as an accessible way to address common magnesium deficiency in thyroid patients.

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Most people think thyroid issues are just about taking a pill, but over 90% of hypothyroid cases are actually Hashimoto's—an autoimmune condition attacking your thyroid gland.

In this episode of Extend, I’m joined by Dr. Izabella Wentz to dive deep into why standard TSH tests fail for years, how artificial sweeteners trigger thyroid dysfunction, and the gut infections that could be destroying your thyroid. We also discuss the lifestyle interventions that can reverse Hashimoto's, the thyroid antibody tests your doctor isn't running, and why an Epsom salt bath might be more powerful than you think.

Dr. Izabella Wentz, PharmD, is a clinical pharmacist who has dedicated her career to addressing the root causes of autoimmune thyroid disease after being diagnosed with Hashimoto's thyroiditis in 2009. She's the author of three books and founder of ThyroidPharmacist.com.

We Also Discuss:

Why Standard TSH Tests Miss Thyroid Disease for 5-10 Years
The Complete Thyroid Panel Every Person Should Demand: TSH, T3, T4, Reverse T3, TPO, TG Antibodies
How Artificial Sweeteners Trigger Autoimmune Thyroid Disease
The Gluten-Thyroid Connection That Can Reverse Hashimoto's
Gut Infections Behind Thyroid Dysfunction: H. Pylori, SIBO, and Blastocystis Hominis
Why Thyroid Antibodies Attack Your Brain, Fertility, and Mental Health—Even Without Thyroid Hormone Problems
The Selenium + Myo-Inositol Protocol That Reverses Early Hashimoto's
Why Iron Deficiency Makes Thyroid Medication Useless
Synthroid vs. Armour vs. T3: Which Thyroid Medication Actually Works
The Hashimoto's Personality: Stress, Trauma, and Autoimmune Disease
Red Light Therapy and Cold Laser for Thyroid Regeneration
Why Your Thyroid Symptoms Might Actually Be Low Cortisol

Thank You for Our Sponsors:

Pendulum: Use code DARSHAN or use the link https://pendulumlife.com/discount/DARSHAN to get 20% off Pendulum membership first orders.

Learn more about Dr. Shah:

Website: https://www.drshah.com/

Clinic: https://www.next-health.com/

Instagram: https://www.instagram.com/darshanshahmd/

Learn more about Dr. Izabella Wentz

Instagram: https://www.instagram.com/izabellawentzpharmd/

Website: www.thyroidpharmacist.com