The diagnosis was clear: My hungry brain wanted food. A lot. And it wouldn’t be satisfied by low-calorie foods, because the pattern of activation was almost nonexistent when I gazed at fruits and vegetables (see bottom two panels of figure 37). “When we’re hungry,” explains Schur, “our bodies don’t want healthy food.” Instead, powerful, instinctive brain regions draw us toward concentrated, quick, easy calories. “That’s what we’re all up against.”

