IBS Uncovered: Diagnosing the Undiagnosable with Dr. Jill Carnahan
Description
In this episode of the FMP Essentials Podcast, Dr. Yousef Elyaman sits down with world-renowned functional medicine expert Dr. Jill Carnahan to go deep into one of the most misunderstood diagnoses in medicine: Irritable Bowel Syndrome (IBS).
They explore the real root causes behind IBS symptoms, including SIBO, SIFO, IMO, dysbiosis, immune dysfunction, mold toxicity, food intolerances, and mast cell activation. Dr. Carnahan also shares her personal journey—from breast cancer and Crohn’s disease to full remission—and how it shaped the way she practices and teaches medicine.
Whether you're a clinician, health coach, or functional medicine advocate, this episode offers insight you can immediately apply in practice.
What You’ll Learn
Why IBS is often a misdiagnosis and how to uncover the real cause
How to use stool testing, organic acid tests, and breath tests for clarity
The difference between IBS, IBD, dysbiosis, and gut immune dysfunction
How to identify and treat SIBO, SIFO, and intestinal methanogen overgrowth
Practical testing and treatment strategies for chronic GI symptoms
Why storytelling, mentorship, and film can drive the next wave of medical change
How practitioners can give back, mentor, and create a lasting impact
Resources & Mentions
Book: Unexpected: Finding Resilience Through Functional Medicine, Science, and FaithAvailable at: www.readunexpected.com
Documentary: Doctor | PatientLearn more: www.doctorpatientmovie.com
Testing Tools Covered:
Stool analysis (PCR and culture)
Organic acids testing
SIBO breath testing (including hydrogen, methane, hydrogen sulfide)
Calprotectin, SIgA, lactoferrin, eosinophilic protein X
Celiac and IBD panels
Mast cell markers (tryptase, histamine, DAO)
Organizations to Support
ISEAI – iseai.org
IRIS Global Health Film Festival – irishealthfilm.org
Environmental Working Group – ewg.org
Institute for Functional Medicine – ifm.org
Connect with Dr. Jill Carnahan
Website: www.jillcarnahan.comInstagram: @drjillcarnahanBook: www.readunexpected.comFilm: www.doctorpatientmovie.com
Connect with FMP Essentials & Dr. Elyaman
Website: www.fmpessentials.comInstagram (Podcast): @fmpessentialshqInstagram (Host): @drelyaman
Sponsored by FMP Essentials
FMP Essentials is the go-to clinical resource hub for functional and root-cause medicine practitioners.Explore protocols, case tools, and practitioner education at:www.fmpessentials.com
Music Credit
Theme music: “Heroes Approaching – Extended” by tunes2goLicensed for podcast and media use.
Disclaimer
This podcast is for educational purposes only and does not constitute medical advice. No doctor-patient relationship is established by listening. Always consult a qualified healthcare professional before making medical decisions or treatment changes.
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