SIBO
Small intestinal bacterial overgrowth
Closest connections · tap one to go there
When more bacteria than usual build up in the small intestine, which can show up as bloating, gas and bowel changes. It shares many symptoms with IBS, and some people have both.
You might notice
- bloating and gas soon after eating
- a visibly swollen belly
- diarrhoea or constipation
- smelly, oily or floating poo
- feeling tired and run down
Who can help
- Gabrielle Stratton · L.Ac., MSTCM · Board-Certified Acupuncturist · Clinical Herbalist · Integrative Medicine PractitionerProfile →
- The Detoxing Duo · Functional Medicine & Nutrition ConsultantsProfile →
- Lidija Springer · Registered Nutritional Therapist · CNHC RegisteredProfile →
A naturopathic or integrative doctor can help look for what's behind it, and a nutrition practitioner can help with the day to day.
See everyone for gut health →Read
Where it can overlap
- Bloating
SIBO can overlap with bloating. Established
- IBS
SIBO shares many symptoms with, and can occur alongside, IBS. Associated
- Diarrhoea
SIBO can overlap with diarrhoea. Established
- B12 deficiency
SIBO can be associated with B12 deficiency. Associated
- Underactive thyroid
SIBO may be more likely with a history of underactive thyroid. Emerging
- Rosacea
SIBO can overlap with rosacea. Emerging
3 more threads +Fewer threads −
- Constipation
SIBO can overlap with constipation. Associated
- Fatigue
SIBO can show up alongside fatigue. Associated
- Food intolerances
SIBO is sometimes explored alongside food intolerances. Woo exploration
Established: well documented · Associated: linked, not a cause · Emerging: early research · Woo exploration: worth exploring, not yet sourced. A link isn't a cause.
Keep exploring
6 sources · how we checked
Everything on this page was researched from clinical guidance, government health sources and published reviews first, then single studies. Where a connection is only worth exploring, it says so.
- ACG Clinical Guideline: Small Intestinal Bacterial Overgrowth American College of Gastroenterology (Am J Gastroenterol) · 2020 · Clinical guideline
- SIBO (Small Intestinal Bacterial Overgrowth) Cleveland Clinic · 2024 · Academic medical centre
- Symptoms & Causes of Diarrhea National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), NIH · 2024 · Government health source
- Small Intestinal Bacterial Overgrowth in Irritable Bowel Syndrome: A Systematic Review and Meta-Analysis of Case-Control Studies American Journal of Gastroenterology (PubMed-indexed) · 2020 · Systematic review
- Relationship Between Hypothyroidism, Risk of Small Intestinal Bacterial Overgrowth, and Duodenal Microbiome Alterations Journal of Clinical Endocrinology & Metabolism (PubMed-indexed) · 2026 · Peer-reviewed paper
- Updates on the Risk of Neuropsychiatric and Gastrointestinal Comorbidities in Rosacea and Its Possible Relationship with the Gut–Brain–Skin Axis International Journal of Molecular Sciences (PubMed Central) · 2020 · Peer-reviewed paper
A note from Woo: Body Map is here to help you explore and ask better questions. It isn't a diagnostic tool or a substitute for medical care. Relationships shown here represent areas that may be associated or worth exploring, not a diagnosis or statement of cause.
if this landed, here’s where to go next
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