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Woman's Torso Lying

What is SIBO?

Small Intestinal Bacterial Overgrowth (SIBO) is a condition in which an excessive amount of bacteria end up residing within the small intestine.  The bacteria that end up overgrowing are typically a combination of bacteria that are normally found in our gastrointestinal tract.  However, they should be populating the large intestine in high numbers, and not the small intestine. ​
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Our intestines are divided into two groups – the small intestine, and the large intestine. Food is broken down into its simple, absorbable components in the small intestines, while the waste is pushed into the large intestine for eventual evacuation during bowel movements. Normally, about 98% of our gastrointestinal bacteria are meant to reside in our large intestine, while only about 2% in our small intestine. In SIBO, much more than 2% are residing in the small intestine, and this creates havoc in our digestive processes. 

How does SIBO cause IBS?

The majority of bacteria in our gastrointestinal system feed on fibers and certain sugars such as lactose (milk sugar) and fructose (fruit sugar). When the bacteria feed, they immediately begin to produce gases such as hydrogen and methane. If SIBO is present, there ends up being an excessive amount of hydrogen and/or methane gases being produced within the small intestine, which leads to the following symptoms as the small intestines expand:

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  • Abdominal bloating/distension

  • Excessive belching

  • Excessive flatulence

  • Abdominal pain/cramping

  • Diarrhea or constipation or alternating between both

  • Nausea

  • Heartburn

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These are the typical symptoms of irritable bowel syndrome (IBS). Research over the last 15 years has shown a major connection between SIBO and IBS.  Specifically, up to 84% of IBS cases will test positive for SIBO. When SIBO is treated correctly, the IBS symptoms are eliminated.  Therefore, SIBO is now considered the #1 root cause behind IBS. 

What Conditions May Be Related to SIBO?

As a common underlying cause, SIBO is associated with many other health complaints and conditions. SIBO is either correlated with causing the conditions below, or is thought to be partly caused by these conditions. The list may be large, but if you experience digestive disturbances and one or more of the conditions listed, SIBO testing is warranted. By treating the root cause, patients can experience a permanent shift in their health.

  • Acne Roseacea

  • Acne Vulgaris

  • Acromegaly

  • Alcohol Consumption (moderate intake)

  • Anemia

  • Atrophic Gastritis

  • Autism

  • Celiac Disease

  • Cystic Fibrosis

  • Chronic Fatigue Syndrome

  • Chronic Lymphocytic Leukemia (CLL)

  • Chronic Medication Use

    • Proton Pump Inhibitors (PPI's)

    • Opiates (pain medication)

    • NSAID's (anti-inflammatory medications such as Advil/Ibuprofen, Naproxen, Motrin, etc.)

  • Cronkhite-Canada Syndrome

  • Deep Vein Thrombosis (DVT)

  • Diabetes

  • Diverticulitis

  • Dyspepsia

  • Ehlers-Dalos Syndrome

  • Environmental Enteric Dysfunction

  • Erosive Esophagitis

  • Fibromyalgia

  • Fructose Malabsorption

  • Gallstones

  • Gastrointestinal Cancer

  • Gastroparesis

  • GERD (Reflux)

  • HIV

  • Hepatic Injury (Liver Injury)

  • History of Surgery

    • Any Abdominal Surgery 

    • Post Gastrectomy (Stomach removal)

    • Post Esophageal and Gastric Cancer Surgery

    • Post Cholecystectomy (Gallbladder removal)

    • Post Colorectal Cancer 

  • H. Pylori Infection (Ulcers)

  • Hypochlorhydria (low stomach acid)

  • Hypothyroidism/Hashimoto's Thyroiditis

  • Irritable Bowel Disease (IBD) including Crohn's Disease and Ulcerative Colitis

  • Irritable Bowel Syndrome (IBS)​

  • Interstitial Cystitis 

  • Lactose Intolerance

  • Leaky Gut Syndrome

  • Liver Cirrhosis (Liver Damage)

  • Lyme Disease

  • Malabsorption Syndrome

  • Muscular Dystrophy (Myotonic Type 1)

  • Myelomeningocele (Spina Bifida)

  • Non-Alcoholic Steatohepatitis

  • Non-Alcoholic Fatty Liver Disease

  • Obesity

  • Pancreatitis

  • Parasites

  • Parkinson's Disease

  • Pernicious Anemia

  • Prostatitis, chronic

  • Radiation Enteropathy

  • Restless Leg Syndrome

  • Rheumatoid Arthritis (RA)

  • Scleroderma (Systemic Sclerosis)

  • Short Bowel Syndrome 

  • Traumatic Brain Injury (TBI) (includes Concussions)

  • Tropical Sprue

  • Whipple's Disease

Phases of SIBO Treatment Include:

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