Christopher D. Still, DO, FACP, FTOS, is Professor of Medicine at the Geisinger Commonwealth School of Medicine. He is also the Medical Director, Center for Nutrition and Weight Management; Director, Geisinger Obesity Institute; Geisinger Health System, Danville, Pennsylvania.
Dr. Still has been studying developments in nutrition, metabolic syndrome, and obesity for nearly 3 decades. His work has included research into genetic markers for obesity; nonalcoholic steatohepatitis, and diabetes; the metabolic differences among obese, formerly obese, and normal-weight men; surgical options for severely obese persons; and leptin-level determination among elderly obese women. He is principal investigator on a rural elderly nutrition and aging study of approximately 22,000 individuals.