Irritable bowel syndrome (IBS) is a pretty big deal. The most common gut disorder, IBS, costs the U.S. economy about $1 billion a year and occurs in a considerable number of people with chronic fatigue syndrome (ME/CFS) and/or fibromyalgia (FM). It, ME/CFS and FM, have long been considered “functional” diseases … Continue reading Does Mast Cell Activation Explain IBS (and Fibromyalgia and ME/CFS)?