An imbalance in the normal healthy bacteria in the digestive system has been found in some
people with IBS-D. The bacteria and microorganisms in your digestive system, collectively
called the microbiota, help you digest and absorb food and are constantly working to keep
your body functioning normally.
Other factors could include improper signaling between the brain and the digestive system,
inflammation or severe infection in the intestines, too strong or weak intestinal muscle
contractions, family history and genetics, and in some cases anxiety and/or depression.
*IBS-D = irritable bowel syndrome with diarrhea.