http://www.newsweek.com/what-causes-irritable-bowel-syndrome-scientists-discover-early-source-disease-979508

Irritable bowel syndrome (IBS) is a condition of the digestive system that affects between 10 to 15 percent of the world’s population. It’s usually a lifelong problem and can have a big impact on a patient's everyday life, however, despite being so common, its causes remain unclear.

Now, researchers from Michigan State University (MSU) have cast light on the biological processes behind the disease, identifying an early cause of intestinal inflammation—one of the first stages of IBS—according to a study published in the journal Cellular and Molecular Gastroenterology and Hepatology.