I found this over at Heather's board. It's one of the few articles that address my own initial symptoms: intestinal spasms:http://hopkins-gi.nts.jhu.edu/pages/latin/...se=43&lang_id=1It's an extremely detailed description of what IBS is about. Highly recommended. I didn't see it posted here, and I apologize if I just overlooked it.Another article that talks about the role of serotonin:http://www.boston.com/yourlife/health/othe...with_many_woes/