Eating fiber-rich foods gives you a sense of fullness. On the other hand, eating low-fiber refined carbohydrate foods leaves you feeling constantly hungry. Here’s what happens: Eating too many refined grams of carbohydrates often times increases insulin to such a high level in overweight individuals that more glucose, or sugar, becomes available to the cells than the body needs for energy. The excess glucose gets turned to fat. Consequently, blood sugar goes down because the glucose is going into the body’s cells as fat. And when your blood sugar begins to drop, you feel hungry.
This cycle may help explain why sugar seems to have an addictive quality and why carb-rich meals may lead to excess weight. Bottom line: Don’t overload your stomach with low-fiber refined carbs. It quickly spikes insulin levels which is the key to unlock the cells so sugar can go in. Not cool if you are just going to lay around or sit still for a long period of time.