Lin Chang, MD is a Professor of Medicine and Vice-Chief of the Vatche and Tamar Manoukian Division of Digestive Diseases at the David Geffen School of Medicine at UCLA. She is Director of the Walter and Shirley Wang Center for Integrative Digestive Health, Co-Director of the G. Oppenheimer Center for Neurobiology of Stress and Resilience and Director of the Clinical Studies and Database Core for the Goodman-Luskin Microbiome Center at UCLA. She is also the Program Director of the UCLA Gastroenterology Fellowship Program. Dr. Chang’s clinical and research expertise is in disorders of gut brain interaction (DGBI), including irritable bowel syndrome (IBS).