2. The main sources of calories are carbohydrates and fats. The reason why meal replacement is low in calories is usually because there is little or no carbohydrate and fat in its raw materials.
3. The reasons for the satiety of bread in meal replacement are as follows: First, meal replacement is rich in soluble dietary fiber, which can prolong the digestion time of the stomach, thus producing satiety and delaying the arrival of hunger; Second, meal replacement itself can swell when it meets water, and it will also produce a strong sense of fullness.