In this revised and updated edition of the bestselling Eat, Drink, and Be Healthy, Dr. Walter Willett, for twenty-five years chair of the renowned Department of Nutrition at the Harvard T.H. Chan School of Public Health and Professor of Medicine at Harvard Medical School, draws on cutting-edge research to explain what the USDA guidelines have gotten wrong--and how you can eat right.

There's an ever-growing body of evidence supporting the relatively simple principles behind healthy eating. Yet the public seems to be more confused than ever about what to eat. The never-ending...