Keith Z Hazleton currently works at the Section of Gastroenterology, Hepatology and Nutrition in Department of Pediatrics, University of Arizona, College of Medicine. Keith does research on the effects of diet on the gut microbiome. Specifically, he looks at how a western-style diet effect C. difficile infection and nutritional status in cystic fibrosis. His most recent publication is 'Low diversity gut microbiota dysbiosis: drivers, functional implications and recovery'.