A decrease in glucose levels—even a small decrease of 20 mg/dL, which is less than the 30 mg/dL dip that occurs after we spike—makes us crave high-calorie foods. The problem is, our glucose levels decrease all the time—specifically, they drop after every spike. And the higher the spike has been, the more intense the crash will be. That’s good, because it means insulin is doing its job, stashing excess glucose in various storage units. But it also means that we’re hit by a desire for a cookie or a burger—or both. Flattening our glucose curve leads to fewer cravings.
