SIFO: The unusual suspect with Lisa Costa-Bir and Todd Mansfield

In this podcast, clinical herbalist Todd Mansfield joins naturopath Lisa Costa-Bir to explore the under-recognised role of small intestinal fungal overgrowth (SIFO) in chronic gut dysfunction - especially in cases where SIBO treatment has repeatedly failed. Together, they unpack the clinical presentation of SIFO, from systemic symptoms to stubborn digestive complaints, and discuss how to differentiate fungal overgrowth using tools like organic acids testing (OAT), fatty acid fractions, pancreatic elastase results, and bowel motility assessments. Todd shares his comprehensive herbal strategy - including horopito, galangal, and magnolia bark - as well as probiotic, prebiotic and postbiotic interventions, with detailed commentary on dosing, mechanisms, and synergistic effects. This episode is a must-listen for practitioners managing complex or treatment-resistant gut presentations, offering a new lens to evaluate and address chronic dysbiosis, inflammation, and relapse-prone cases. Covered in this episode: (00:58) Welcome Todd Mansfield (04:23) Candida is meant to be there? (05:53) Sign and symptoms of fungal overgrowth? (10:17) From commensal to problem (13:16) Antibiotics (17:18) Autoimmunity and SIFO (20:51) SIFO testing (25:29) B2 deficiency (30:50) Management strategies (38:11) Dysbiosis (39:46) Herbal tinctures? (45:57) Length of treatment (48:03) Probiotics? (52:10) Prebiotics (56:09) Liposomal glutathione? (59:22) Anti-candida diets (1:01:47) Final remarks Find today's transcript and show notes here: Sign up for our monthly newsletter for the latest exclusive clinical tools, articles, and infographics: FX DISCLAIMER: The information provided on fx Medicine by BioCeuticals is for educational and informational purposes only. The information provided is not, nor is it intended to be, a substitute for professional advice or care. Please seek the advice of a qualified health care professional in the event something you learn here raises questions or concerns regarding your health.

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SIFO: The unusual suspect with Lisa Costa-Bir and Todd Mansfield is an episode from FX Medicine Podcast Central by FX Medicine.

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This episode was published on Aug 18, 2025.

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