Irritable bowel syndrome (IBS) diagnosed in both men and women strikes the large intestine (colon). As we all know, the colon is mainly involved in the elimination of fecal matter. So, with the onset of IBS, one experiences a change in bowel movement that appears in the form of diarrhea or constipation. Apart from frequent or irregular bowel movement, the person is likely to suffer from abdominal pain, bloating and gas. Managing IBS becomes an easy job if soluble fiber foods are included in the diet.