What Is SIBO? (And How to Tell If You Might Have It)
If you’re experiencing stubborn bloating, uncomfortable gas, or unpredictable bowels, you might be dealing with something more than standard IBS — it could be SIBO.
SIBO stands for Small Intestinal Bacterial Overgrowth. It happens when bacteria that normally live in the large intestine start growing in the small intestine, where they don’t belong. This overgrowth can interfere with digestion and cause a wide range of symptoms.
Common Signs of SIBO:
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Bloating (often within 1–2 hours after eating)
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Excessive gas or burping
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Constipation, diarrhoea or a mix of both
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Abdominal discomfort or cramps
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Brain fog and fatigue
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Food sensitivities or intolerance
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Nutrient deficiencies (especially B12, iron)
What Causes It?
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Slow gut motility (especially after food poisoning or stress)
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Structural issues (like adhesions or scar tissue)
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Long-term use of proton pump inhibitors or antibiotics
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Underlying conditions (like IBS, coeliac disease, diabetes)
SIBO can mimic IBS, which is why many people go years undiagnosed. If your symptoms worsen after fibre, starches, or probiotics, it might be time to investigate further.
Think you might have SIBO? Speak to a practitioner and ask about breath testing.