The Gut Show

Untangling SIBO, IMO, and ISO: IBS Insights with Dr. Pimentel

Jun 20, 2025
Dr. Mark Pimentel, a leading expert on IBS and the gut microbiome, dives deep into the complexities of SIBO, IMO, and IBS. He discusses the importance of breath and stool testing for accurate diagnoses. Discover the significant role of antibiotics like Rifaximin in treatment, as well as emerging therapies that could change the game. Pimentel highlights the challenges in managing these conditions and emphasizes the emotional struggles of patients, advocating for better support and understanding in gut health.
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INSIGHT

Three Gases in IBS Revealed

  • IBS symptoms often relate to different microbial gases: hydrogen, methane, and hydrogen sulfide.
  • These gases correlate to distinct microbial overgrowths, influencing constipation, diarrhea, and bloating.
ADVICE

Test IBS Patients with Breath Test

  • Test all IBS patients with a three-gas breath test to identify bacterial overgrowth.
  • Positive gas type directs targeted treatment and may avoid unnecessary invasive tests.
ADVICE

Use Three-Gas Breath Test

  • Use the validated three-gas breath test measuring hydrogen, methane, and hydrogen sulfide for diagnosis.
  • Breath tests correlate accurately with small bowel microbiome composition and microbial overgrowth.
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