Irritable Bowel Syndrome is another common health problem reportedly experienced by one in four people in the United States. Healthline describes IBS as a common gastrointestinal disorder that affects the colon.  Patients experiencing the same complain that abdominal pain, cramps, bloating, constipation, diarrhoea, and gas are common symptoms. Urgent bowel motions or a sense of incomplete evacuation are other IBS symptoms.