David M NathanDavid M. Nathan, M.D., is the director of the Massachusetts General Hospital Diabetes Center and a professor of medicine at Harvard Medical School. An internationally recognized expert on diabetes and its complications, he pioneered the develoment of intensive therapies for diabetes and was one of the designers of the landmark Diabetes Prevention Program and the Diabetes Control and Complications Trial. Dr. Nathan has appeared on "ABC News," "CBS Evening News," and "The NewsHour with Jim Lehrer," as well as on the CBC and the BBC, and he has been featured in countless publications, including the Wall Street Journal and the New York Times. Linda Delahanty, M.S., R.D., is the director of Nutrition and Behavioral Research and chief dietitian at the Massachusetts General Hospital Diabetes Center and an instructor in medicine at Harvard Medical School. For more than twenty years, she has conducted research in nutrition and the behavioral changes that lead to success with weight loss and improved control of diabetes. Delahanty is a nationally recognized, widely quoted expert in nutrition and diabetes who has counseled thousands of people with diabetes. She is the author of 101 Weight Loss Tips for Preventing and Controlling Diabetes. Read More Read Less