Dr. Marshall is a Professor of Medicine and Director of the Division of Gastroenterology at McMaster University, as well as a consultant gastroenterologist at Hamilton Health Sciences in Hamilton Ontario. He completed his B.A. and M.D. at Queen’s University and then undertook his residency training and M.Sc. in Clinical Epidemiology & Biostatistics at McMaster University. He is a Full Member of the Farncombe Family Digestive Health Research Institute. His publications include over 350 academic papers and book chapters. Dr. Marshall was the founding Editor-in-Chief of the Journal of the Canadian Association of Gastroenterology (JCAG). He is also an Associate Editor of ACP Journal Club and an Editorial Board Member for the Journal of Crohn’s and Colitis. Recent honours include the CAG Visiting Clinical Professorship (2020), Physician of the Year from Crohn’s and Colitis Canada (2024), and Fellowship in both the American Gastroenterological Association (AGAF) and CAG (CAGF). Dr. Marshall’s clinical and research interests include inflammatory bowel disease, post-infectious irritable bowel syndrome, clinical epidemiology, and health outcomes.