IBS (Irritable Bowel Syndrome) is a disorder of motility of the entire GI tract that produces cramping, abdominal pain, constipation, and/or diarrhea and sometimes passing of mucus in bowel movements. In most people with IBS, the GI tract is highly sensitive to many stimuli, including diet and distension from gas. Among dietary suspects are high-fat or other high-calorie meals, dairy products, wheat, citrus fruits, coffee, and tea which can trigger spasms of the colon muscle. During an episode, GI tract contractions become stronger and more frequent, and the resulting rapid motility may lead to diarrhea. When colon motility is reduced, bowel movements do not occur regularly, resulting in constipation. Cramping appears to be induced by strong contractions and increased sensitivity of pain receptors in the large intestine. IBS can be triggered or intensified by stress due to communications between the central nervous system and the nervous system of the small and large intestines. This is sometimes referred to as a brain-gut connection and is supported by inspection of electroencephalogram (EEG) traces which showed significantly greater EEG abnormality in IBS patients (29.2%) than in controls (4.2%) [p<0.02]. The degree of abnormality was positively correlated with colonic motility only in IBS patients (p<0.05) allowing the authors to conclude that there is an electrophysiologic brain-gut interaction in IBS.