Maria Cappello has been a specialist in gastroenterology since 1994 (University of Palermo), attended the Gastroenterology Unit at John Radcliffe Hospital, Oxford (UK) as a research fellow (1989–1990), and has conducted studies on intestinal immunology. Since 1998, she has been the Senior Registrar at the Gastroenterology and Hepatology Unit of the University Hospital (Policlinico) of Palermo (Italy), where she is the Head of the IBD Clinic (a tertiary referral center for IBD). She is also a referral physician for adult celiac disease and chronic intestinal failure. She has served as guest lecturer and clinical tutor for the School of Gastroenterology, University of Palermo, and is certified as an Associate Professor of Gastroenterology (MIUR). She is a member of several national and international scientific societies: AIGO, IG-IBD, AIC Sicily, and ECCO (European Crohn’s and Colitis Organization). She has been a speaker in national and international meetings and is the author of publications in the field of IBD, celiac disease, and clinical nutrition.