Kate Scarlata is a world-renowned gastroenterology specialist and registered dietitian with more than 30 years' experience. She is the New York Times bestselling co-author of 21 Day Tummy Diet, co-author of The Low FODMAP Diet Step by Step, and author of The Complete Idiot's Guide to Eating Well with IBS.
Dr Megan Riehl is an internationally recognised GI psychologist at the University of Michigan, specialising in psycho-gastroenterology for diseases including IBS, IBD and Coeliac.