Alessio Fasano

A pediatric gastroenterologist, Alessio Fasano, MD is head of the Mucosal Immunology and Biology Research Center at Massachusetts General Hospital (MGH) and professor of nutrition at the Harvard T.H. Chan School of Public Health. In 2000, his group discovered zonulin, a protein that regulates intestinal tight junctions and is associated with gut dysbiosis. His basic research focuses on bacterial pathogenesis, gut microbiome composition and function in health and disease, the regulation of gut permeability, intestinal mucosal biology and immunology and SARS-CoV2. He is director of the Center for Celiac Research and Treatment at MGH and widely sought after as an expert in celiac disease, intestinal permeability and autoimmune disorders. Dr. Fasano is the author of Gluten Freedom and co-author with Susie Flaherty of Gut Feelings.