JOHANNA T. DWYER (Food and Nutrition Board, Liaison) is Professor of Medicine and Community Health at Tufts University School of Medicine and also at the Tufts School of Nutrition. She is also Senior Scientist at the U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging at Tufts. She holds the D.Sc. from the Harvard School of Public Health. Research interests include energy balance, dietary aspects of disease, and special physiological stresses and diet.

JOEL GRINKER is currently a Professor in the Human Nutrition Program, School of Public Health, a Professor in Pediatrics at the Medical School, and a member of the Center for Human Growth and Development at the University of Michigan. She received a Ph.D. in experimental social psychology from New York University and was the recipient of a Russell Sage Foundation Fellowship at the Rockefeller University in biochemistry, biology, and behavior. After 15 years at Rockefeller University in the laboratory of Human Behavior and Metabolism, she moved to the University of Michigan to become Chair of the Program in Human Nutrition. Major areas of interest are in obesity, specifically the development and maintenance of obesity through the life span.

EDWARD S. HORTON is Professor and Chairman of the Department of Medicine at the University of Vermont College of Medicine, Burlington, Vermont. He is a graduate of Harvard Medical School and received his training in internal medicine, and endocrinology and metabolism, at Duke University. Since 1967, he has been at the University of Vermont where his major research has involved studies of the regulation of energy expenditure in humans, the interrelationships between obesity and diabetes mellitus, and the mechanisms of insulin resistance in skeletal muscle and adipose tissue. He is particularly interested in the effects of exercise and physical conditioning on insulin sensitivity, and the regulation of glucose transport and metabolism in skeletal muscle. He is immediate Past President of the American Diabetes Association and a Past President of the American Society for Clinical Nutrition.

G. RICHARD JANSEN is Emeritus Professor of Nutritional Science and formerly Head of the Department of Food Science and Human Nutrition at Colorado State University. His Ph.D. in biochemistry was from Cornell University. His research interests deal primarily with protein nutrition, and he has co-authored a book on diet and health issues. Prior to his appointment at Colorado State, he was a research fellow at the Merck Institute. He served in the United States Air Force from 1950 to 1953.

GILBERT A. LEVEILLE is Vice President of Research and Technical Services for Nabisco Brands, Inc. Prior to joining Nabisco in 1986 he was Director of Nutrition and Health for General Foods, and from 1971 to 1980