Looking for a helpful guide to SIBO? You’re in the right place! We’ve assembled this succinct and straight-forward guide to SIBO packed with helpful information answering some of the most frequently asked questions regarding this health condition.


Each year more and more people are becoming aware of and being diagnosed with SIBO. So, what is SIBO? Small intestinal bacterial overgrowth is when there is a significant overgrowth of bacteria in the small intestine. Particularly, two bacterial species can overgrow which are methane or hydrogen and some people may even have a combo. Why would this matter you might ask? Well it often times leads to bloating, gas, constipation, nausea, diarrhea, fatigue, stomach discomfort and ultimately can lead to many more health conditions.

  • What Is SIBO?

  • What Causes SIBO?

  • What Are Common Symptoms Of SIBO?

  • How Do You Treat SIBO?

  • What Medications Help SIBO?

  • Do I Need To See A Doctor?

  • Can SIBO Be Cured?

  • Can You Treat SIBO By Yourself?


SIBO or Small Intestinal Bacterial Overgrowth is a serious condition in which too much bacteria grow in the small intestine. Normally these bacteria will grow in the gastrointestinal tract including the large intestine but if an overgrowth takes place they overflow into the small intestine, which usually doesn’t have a lot of bacteria. A person suffering from SIBO will normally experience bloating, diarrhea or constipation, stomach pain and discomfort when the bacteria grows out of control. Even more of a problem becomes nutrient absorption, which can lead to malnutrition as the bacteria starts to use up the body’s nutrients.

Bacterial overgrowth can greatly affect the normal process of digestion and absorption of food and ultimately damage the membranes and small linings of the small intestine. For example the overgrowth of bacteria can metabolize salts to insoluble, which may lead to fat malabsorption or bile acid diarrhea. The bacterial overgrowth produces gases and other by-products that result in many different symptoms. Unfortunately, this disease is still poorly understood and oftentimes misdiagnosed or overlooked. Initially, it was thought to only appear in a small number of patients but with better accessibility to testing we now know that is incorrect. Patients can be mildly affected by SIBO, not even notice they have it or have extreme symptoms that ultimately affect their quality of life.


Normally when we eat food, enzymes will break down our food and our gut moves the food through our digestive tract from the stomach to the small intestine and then to the colon. In a healthy microbiome, the bacteria’s get passed through our digestive tract along with food to the colon. However with SIBO this process does not exactly occur and some causes of that can be:

  • Damaged nerves or muscles – diabetes mellitus and scleroderma can both affect the muscles in the gut, leaving room for SIBO to develop
  • Physical obstructions in the gut – scarring from surgeries or Crohn’s disease and diverticula (tiny pouches that can form in the wall of the small intestine) can collect bacteria instead of passing it on to the colon, where it belongs.
  • Medications – medications can disrupt the normal gut flora including antibiotics, acid-blocking drugs, and steroids.
  • Nutrition – a diet high in sugar, refined carbohydrates, alcohol, and other high-carb foods you eat or drink.
  • Chronic constipation – lengthened transit time and any stagnancy can create a build up of bacteria in the small intestine
  • Shorter transit time – if food passes through the bowel too quickly it can also be problematic because it does not allow for proper digestion and absorption
  • Digestive enzymes – if someone does not have enough stomach acid, bile and enzymes to keep bacterial levels in check than too much bacteria can begin to flourish


The bacterial overgrowth of SIBO produces gases and other by-products that may lead to many different symptoms. These symptoms include gastrointestinal symptoms however there are many other symptoms that can take place in our body as well. Additionally, if left untreated there are also many different risks associated with the condition and other medical issues that can appear. The SIBO symptoms that most experience but are not limited to are:

  • Pain in the stomach
  • Stomach discomfort after eating
  • Bloating
  • Cramps
  • Diarrhea
  • Constipation
  • Indigestion
  • Regular feeling of fullness
  • Gas
  • Weight loss
  • Irritable bowel syndrome (IBS)
  • Inflammatory Bowel Disease (IBD)
  • Food intolerances such as: gluten, casein, lactose, fructose, and histamine intolerance (bananas, eggplant and avocado)


It is important to understand what type of SIBO you have before you begin treatment. This means you will need to take a test to identify if you have hydrogen or methane based SIBO and the quantity of the overgrowth. There are a few testing options to identify your SIBO: breath test, organix dysbiosis test (urine-based) or a comprehensive stool test. Once you have identified the type of SIBO generally practitioners will want to “starve” the bacteria by removing foods that feed the bacteria like sugar, alcohol and carbohydrates.

Many people will go on a LOW-FOD map diet in which the usual inflammatory gut foods are removed like: bread, cookies, cake, cocktails as well as complex carbohydrates such as grains and legumes. Any sugar will ultimately feed the bacteria. A SIBO diet generally consists of lots of non-starchy vegetables, lean proteins, healthy fats and low glycemic fruit. After you have starved the bacteria usually natural antibiotics or regular antibiotics will be used to kill off the bacteria. Xifaxan and Neomycin are a common combo to kill off methane based SIBO. Xifaxan is more effective with hydrogen-dominant SIBO and Neomycin with methane-dominant SIBO. When it comes to alternative medicine blends with berberine are usually used. Lastly, you will restore you gut with good bacteria by finding a SIBO suitable probiotic because some probiotics will make SIBO worse.

Explore Recent Blog Posts

Want to know more about SIBO? Discover some of our recent blog posts discussing this health condition and learn more.




At Bare Health we are dedicated to helping our clients live better, healthier lives. Whether you are struggling with SIBO, want help building a sustainable nutrition program, or want to improve your physical fitness, Bare Health can help you! Remember, a better life starts by creating a healthy life.


Go to Top