Simply put, fasting provides beneficial hormonal changes that are entirely prevented by the constant intake of food, even when the calories in that food are reduced. It is the intermittency of the fasting that makes it so much more effective. If we want our bodies to burn off the sugar that is causing type 2 diabetes, we need the fire of our basal metabolism to remain stoked. We can forge our new diabetes-free bodies in the crucible of fasting.