Web MD states that a build up of intestinal bacteria occurs when a condition hinders the normal functionality of the small intestine, such that, bacteria stays there longer and multiplies. Also referred to as small intestinal bacterial overgrowth or SIBO, the condition can result from irregular muscular activity that facilitates backward movement of bacteria from the colon into the small intestine.
Conditions capable of interfering with normal activity in the small intestine include neurological and muscular diseases, according to Web MD. For example, diabetes mellitus destroys the nerves responsible for control of intestinal muscles. Scleroderma attacks intestinal muscles directly. Web MD explains that when surgical procedures and Crohn’s disease cause scarring, a victim can experience partial or intermittent blockage of the small intestine, and this eventually leads to SIBO.
According to the National Center for Biotechnology Information, a study published in the World Journal of Gastroenterology found celiac disease to have caused SIBO in between 9 and 55 percent of patients sampled. The condition was found to affect more patients who did not respond to a gluten-free diet or were lactose-intolerant. Similarly, short bowel syndrome is linked to SIBO, as the condition leads to overgrowth of large intestinal bacteria flora in the small intestine. Symptoms of intestinal bacteria build up include abdominal pain, constipation, abdominal bloating and distension and excess wind, according to Web MD.