I for one, am a sufferer of IBS, on and off for years. I’ve long suspected that it is aggravated during times when I am upset, but it often goes in the opposite direction of it’s usual (constipation), and I will get diarrhea when upset. For this reason, I’ve become convinced that not only is IBS, Irritable Bowel Syndrome, is nutritionally connected, but in some cases it may also be pscyhological.
I will say I notice my IBS condition gets very aggravated when I consume a lot of cheese or dairy. I think that anyone with IBS, especially people who tend toward constipation, should stear as clear as they can from cheese and many other forms of dairy, because we may be a bit more sensitive to it than others who do not have digestive or waste elimination issues in our digestive tract.
The latest link between IBS and psychology is that those people with IBS may have exaggerated senses when it comes to sensing pain, and may also be more prone to depression and anxiety. While the two aren’t mutually exclusive, I’d still say it has a lot to do with diet and colon health, and my bet is on keeping the colon cleansed and eating right, before seeking otu counseling to regulate your bowels. That’s just my opinion though.