Okay, so the body initially reacts to FOOD, no matter what kind, and the raise in glucose levels start after that. Gotcha. Fiber doesn't increase glucose levels, in fact SLOWS the absorption of the digestible carbs in the food eaten. This doesn't prove fiber raises glucose levels in and of itself or has any effect on insulin production other than REDUCING it. Which, to me, means fiber doesn't cause a blood sugar drop or increased cravings... the digestible sugars and/or starches do.