What is SIBO? Small Intestinal Bacterial Overgrowth (SIBO) is a condition where there is the presence of excessive bacteria in the small intestine. SIBO typically causes chronic diarrhea, pain and malabsorption. People with SIBO may also suffer from unintentional weight loss, nutritional deficiencies, and osteoporosis. SIBO is caused when bacteria (common ones include Escherichia coli, EnterococcusContinue reading “Bloating and lots of gas? Have loose poop or diarrhea? You may have SIBO.”