Ten years ago this month scientists reported the discovery of the appetite-supressing hormone leptin. We'll get an update on leptin research, and find out if scientists are any closer to using leptin to fight obesity.
Jeffrey Friedman, Howard Hughes Medical Investigator; Marilyn M. Simpson professor; Head of the Laboratory of Molecular Genetics, Rockefeller University, New York City.
Paul Ernsberger, associate professor, Department of Nutrition,
Case Western Reserve University
School of Medicine, Cleveland, Ohio.