Robert H. Lustig, M.D., is an internationally renowned pediatric endocrinologist who has spent the past sixteen yers treating childhood obesity and studying the effects of sugar on the central nervous system, metabolism, and disease. He is the director of the Weight Assessment for Teen and Child Health Program at UCSF Benioff Children's Hospital; a member of the UCSF Center for Obesity Assessment, Study, and Treatment; as well as a member of the Obesity Task Force of the Endocrine Society.