"Microbiome" is a buzzword these days--but many people don't know what it means. As we re-assess the lasting impact diet may have on our health, researchers are examining the role of gut health as possible causes for the dramatic uptick in colorectal cancer in young people. Katie Couric, founder of Katie Couric Media and Stand Up To Cancer, hosts an expert-led panel including Dr. Nancy You, a surgeon and director of the Young-Onset Colorectal Cancer Program at MD Anderson, Dr. Susan Bullman–an Associate Professor of Gastrointestinal Medical Oncology at The University of Texas MD Anderson Cancer Center, and Julie Smolyansky, CEO of Lifeway Foods, to discuss the impact of diet on the gut microbiome.