Can food poisoning trigger SIBO?

Yes, acute food poisoning is one of the most common triggers for chronic SIBO. When you contract gastroenteritis from pathogens like Salmonella, E. coli, or Campylobacter, these bacteria release a toxin called cytolethal distending toxin B (CdtB). In many individuals, the immune response to this toxin produces antibodies that mistakenly cross-react with vinculin, a critical protein found in the gut's interstitial cells of Cajal (the pacemakers of gut motility). This autoimmune reaction damages the enteric nerves that coordinate Migrating Motor Complex (MMC) cleansing waves. Without these vital clearing waves, bacteria pool and multiply in the small intestine, leading to post-infectious SIBO. To understand this process and its treatment, read about [post-infectious SIBO IBS](/post-infectious-sibo-ibs).

Disclaimer: This content is reviewed and fact-checked by Daryl Stubbs, Certified Holistic Nutritional Consultant (C.H.N.C), for educational purposes. It does not constitute medical advice or a doctor-patient relationship.