Those on a daily calorie-restricted diet saw their insulin levels drop but quickly reach a plateau. The intermittent fasting group, on the other hand, continued to reduce their fasting insulin levels, a key marker of improved insulin resistance, despite similar total caloric intake. Since type 2 diabetes is a disease of hyperinsulinemia and insulin resistance, the intermittent fasting strategy succeeded where caloric restriction did not. It was the intermittency of the diet that made
