Dr. Steven Sandberg-Lewis is professor at National University of Natural Medicine focusing on gastroenterology. Within gastroenterology, he has a special interest and expertise in inflammatory bowel disease, IBS, and SIBO. He's the author of the medical text book, Functional Gastroenterology: Assessing and Addressing the Cause of Functional Digestive Disorders. He has recently opened Hive Mind Medicine, a clinic focused on digestive and mental health in Portland, Oregon.