Professor Joseph H Sellin is the Chief of Gastroenterology at the Ben Taub Hospital, at the Baylor College of Medicine in Houston, Texas. His primary research interests include dietary influences on the gastrointestinal tract, inflammatory bowel disease, and regulation of colonic proliferation. Professor Sellin is a member of numerous professional societies, including American Gastroenterological Association, American College of Gastroenterology, Crohns and Colitis Foundation of America, and American Society for Clinical Investigation.