SIBO, or small intestinal bowel overgrowth, is a growing problem for many people around the world. There is no one cause, but contributing factors include diet high in processed food, chronic stress, constipation from any cause. Constipation may cause the valve between the small intestine and large intestine to flap inside out, allowing the bacteria that are supposed to grow in the large intestine to leak into and grow in the small intestines, causing inflammation.
Certain bacteria that produce hydrogen cause diarrhea, others that produce methane gas cause constipation, while others produce a rotten egg smell in burps and toots from hydrogen sulfide.
Allison Seibecker, ND has been working with colleagues to solve this mystery illness for many years, and has a free website, SIBOinfo.com that has many helpful handouts and links to specifics of diagnosis, diet, treatment, and aftercare.
Treatment can be diet alone, diet and antibiotics or herbal antimicrobials. She also lists supplements that help relieve symptoms of gas, bloating, constipation while waiting for condition to heal. For some, 3-6 months will complete treatment, for others, dietary restrictions last a lifetime, of until future treatments are found.
Dr. Rostenberg from BeyondMTHFR gives this great presentation that integrates physical reduction of hiatal hernia and illeocecal valve dysfunction with dietary and supplement recommendations.
I am concerned with the dietary recommendations if they are to last a lifetime, as meat has been found to contain endotoxins that can cause inflammatory bowel disease. These diets are low in the lentils and beans that feed prevotella bacteria that prevent Parkinson's disease and other neuro-degenerative disorders. In my practice, we get people better, then ease them onto more plant based nutrition over time.