Earlier Dr. Guenther was employed by the USDA Agricultural Research Service, where her work focused on developing improved methods for collecting and analyzing dietary survey data. Dr. Guenther received her B.S. and M.S. degrees in nutrition from Case Western Reserve University in Cleveland, Ohio, and her Ph.D. in Nutritional Sciences from the University of Maryland, College Park. She completed an internship in clinical dietetics at the University of Michigan Medical Center. Dr. Guenther is a registered dietitian, member of the Academy of Nutrition and Dietetics and the American Society for Nutrition, and serves on the editorial board of the Journal of the Academy of Nutrition and Dietetics.