Irritable Bowel Syndrome (IBS) is the most common functional bowel disorder diagnosed by primary care physicians and gastroenterologists. It is hard to estimate the exact prevalence of IBS because up to 70% of people with IBS symptoms do not go for medical treatment.
The ratio of female-to-male sufferers is approximately 2:1.
IBS affects up to one in five Americans and is second only to the common cold as a leading cause of missing work in the U.S.
IBS costs the U.S. healthcare system is estimates as $20 to 25 billion annually in direct and indirect costs.