I can't help but think of the times I had white rice. It digests quickly and so the glucose gets into my blood quickly and I would feel hungry or sleepy a few hours later (because of the insulin response that lowers my blood sugar). So yes, it would mean I would have to take more meals of lesser quantity.It probably would if you had a large serving. I imagine small servings would have a more moderate effect?
And it's because rice is a starch, and white rice digests quickly. A large meal of white rice - isn't that equivalent to a large helping of glucose? So why would taking glucose be of any benefit? Wouldn't sucrose be better?