Dr. Kevin Hall received his Ph.D. in Physics from McGill University and is now a tenured Senior Investigator at the National Institute of Diabetes & Digestive & Kidney Diseases (NIDDK), one of the National Institutes of Health (NIH) in Bethesda, MD. His main research interests are the regulation of food intake, macronutrient metabolism, energy balance, and body weight. Dr. Hall develops mathematical models and computer simulations to help design, predict, and interpret the results of clinical research studies conducted by his laboratory to better understand human nutrition and metabolism. Dr. Hall has twice received both the NIH Director’s Award and the NIDDK Director’s Award, and is the recipient of the E.V. McCullum Award from the American Society for Nutrition, the Lilly Scientific Achievement Award from The Obesity Society, the Guyton Award for Excellence in Integrative Physiology from the American Society of Physiology,and his award-winning Body Weight Planner (http://BWPlanner.niddk.nih.gov) has been used by millions of people to help predict how diet and physical activity dynamically interact to affect human body weight.