Refined carb..........................…

As you know, in the refining process, the part of the grain that contains most of the actual nutrients is removed, leaving the pure white starchy part. Your body needs those nutrients along with the starchy part to be properly nourished, so after eating refined carbs, you start craving more and more food to "make up" for what's missing, and overeat on the higher calorie starchy items. The body makes insulin to usher the nutrients into the cells, and with no nutrients accompanying that starch, it's converted into fat by the liver and stored in the cells instead of feeding them what they actually need.