#sibo

The SIBO Diet: What to Eat, What to Avoid and for How Long

What the evidence says about diet for SIBO: low-fermentation and low-FODMAP foods to limit, the three phases, meal spacing, and the elemental diet.

Hydrogen Sulfide SIBO: Symptoms, Testing and Treatment

What hydrogen sulfide SIBO is, why standard breath tests miss it, the three-gas test and its 3 ppm cut-off, and how it is treated, based on current research.

Methane SIBO (IMO): Causes, Symptoms, Testing and Treatment

Methane SIBO, now called intestinal methanogen overgrowth (IMO): why it causes constipation, how breath tests diagnose it, and how it is treated.

How SIBO Is Diagnosed: Which Test and When

How doctors diagnose SIBO: who should be tested, breath tests vs. small-intestinal fluid culture, what other tests add, and how to make sense of the results.

Symptoms of SIBO

The symptoms of SIBO, from bloating and diarrhea to B12 deficiency and brain fog, how they differ by gas type, and which warning signs need a doctor.

What is Small Intestinal Bacterial Overgrowth (SIBO)?

What SIBO is, what causes it, the three gas types, how it is diagnosed and treated, and why it often comes back, based on clinical guidelines and studies.

SIBO Breath Tests

How SIBO breath tests work: glucose vs. lactulose, how to prepare, the official cut-offs for hydrogen, methane and hydrogen sulfide, and how accurate they are.

The endoscopy test for small intestinal bacterial overgrowth

How small-intestinal fluid culture during endoscopy diagnoses SIBO: the procedure, the 1,000 CFU/mL cut-off, what sequencing shows, and the test's limits.

Treating Small Intestinal Bacterial Overgrowth Using the Elemental Diet

How the elemental diet treats SIBO: what the 2004 and 2025 studies found, how the 2-week liquid protocol works, side effects, and how to come off it.