The point I am making is IBS is "Irritable Bowel Syndrome, as defined by the Rome Critera diagnostic guidelines, is characterized as a brain-gut dysfunction."
So its not a hypothesis anymore but a scientific theory, supported by testing,observations and peer review. I think this is important for people to truely understand for a variety of reasons, including treatments. Treating both the brain and the gut and helping to understand what causes the symptoms or the many things that can triggers the symptoms.
Its also important to know for some, "its not all in the head" but that the brain is still involved for good and for bad.