Dr. Izabella Wentz: IBS Root Causes, Leaky Gut, Autoimmunity, and How To Start Healing Your Gut  episode artwork

EPISODE · May 28, 2026 · 56 MIN

Dr. Izabella Wentz: IBS Root Causes, Leaky Gut, Autoimmunity, and How To Start Healing Your Gut

from Longevity Optimization with Kayla Barnes-Lentz · host Kayla Barnes-Lentz

Less than 25% of people with IBS get real relief from conventional medicine. That number tells you everything about how the current approach is failing.Most people with IBS have been told it is stress, told to take medication, and sent home. But irritable bowel syndrome is not one condition, it is a label applied to a cluster of symptoms that can have 20 to 40 completely different root causes. And left unaddressed, it is one of the most reliable predictors of autoimmune disease down the line.In this episode I sit down with Dr. Izabella Wentz, clinical pharmacist, functional medicine expert, and NYT bestselling author known as the Thyroid Pharmacist. After her own IBS diagnosis in pharmacy school preceded her Hashimoto's diagnosis by six years, she has spent over a decade connecting the dots between gut dysfunction and autoimmunity for hundreds of thousands of people.Join the most comprehensive *female-specific community for health and longevity optimization.* After over a decade dedicated to human performance and women’s health, I created this space to share everything you need to know to optimize health and lifespan. Inside, you’ll get access to exclusive protocols, live Q&As, the latest female longevity science, and a private, supportive community of like-minded women.https://kayla-barnes-lentz.circle.so/checkout/become-a-memberIf you’re already paying attention to food, sleep, and overall health, cleaning products are another place where exposure adds up quickly. Branch Basics is a simple way to clean your home with fewer unnecessary ingredients and less clutter under the sink.https://branchbasics.com/KAYLA15Code: KAYLA15We explore:-Why IBS precedes autoimmune disease by 5 to 10 years-The three conditions that must all be present for autoimmunity to manifest-Why women are twice as likely to have IBS during their reproductive years and the specific hormonal and lifestyle drivers-The functional medicine testing approach versus what most GI doctors actually look at-Why gluten particles cross-react with thyroid tissue and what that means for anyone with Hashimoto's-How to actually get mold out of the body and why it disrupts the gut microbiome so severely-The gut healing protocol that got Dr. Izabella's husband into remission from ulcerative colitis in two monthsConnect with Kayla:Instagram: https://www.instagram.com/kaylabarnes/TikTok: https://www.tiktok.com/@femalelongevityTwitter:https://x.com/femalelongevityWebsite:https://www.kaylabarnes.com/Spotify: https://open.spotify.com/show/4OLWWn22RGB0argbRPvAaQ?si=8e91b3c9e0ce4054Apple: https://podcasts.apple.com/us/podcast/longevity-optimization-with-kayla-barnes-lentz/id1591130227Follow Her Female Protocol: https://www.protocol.kaylabarnes.comLearn more about Dr Izabella:Instagram: https://www.instagram.com/izabellawentzpharmd/Website: https://thyroidpharmacist.com/Youtube: https://www.youtube.com/user/ThyroidPharmacist#guthealth #IBS #irritablebowelsyndrome #leakygut #autoimmune #hashimotos #thyroidhealth #womenshealth #femalelongevity #longevity #gutmicrobiome #functionalhealth #functionalmedicine #rootcause #parasites #SIBO #foodsensitivities #guthealing #healthoptimization #preventivemedicine

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Dr. Izabella Wentz: IBS Root Causes, Leaky Gut, Autoimmunity, and How To Start Healing Your Gut

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This episode was published on May 28, 2026.

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