U.S. Department of Agriculture data show that today we’re eating more of everything, and the prevalence of cheap, processed foods is the prime culprit. In addition to their paltry nutritional value, processed foods disappear down our throats so quickly that they fail to leave us feeling satisfied. The result? More eating. In this excerpt from his New York Times best-seller, “The End of Overeating,” David. A. Kessler, former commissioner of the Food and Drug Administration, reveals just a few of the ways the savvy, profit-hungry food industry has tapped the science of eating to exploit our appetite and, ultimately, harm our health.