Dr. Still has been studying developments in nutrition, metabolic syndrome, and obesity for nearly two decades. His work has included research into genetic markers for obesity, NASH, 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 serves as principal investigator on rural elderly nutrition and aging study of some 22,000 individuals.
He is the author of the book chapter on obesity in Conn's Current Therapy, 1999, 2007 and 2008 editions and the co-author of several other textbook chapters. He has also published in several journals, including Archives of Surgery, Current Gastroenterology Reports, Journal of Clinical Gastroenterology, and Surgery for Obesity and Related Disorders. He has lectured on such subjects as vitamin and mineral metabolism; diet, nutrition, and exercise; obesity through the life cycle; and peri-operative medical and nutritional management of the bariatric surgery patient.