Glucose is a sugar released from carbohydrates, so if we want to control blood sugar we have to limit the consumption of simple carbohydrates. Carbohydrate food is given as value per portion known as exchange. This helps to decide on the type of food to be eaten, the amount of food and the time at which the food should be eaten. One can plan for more flexible meals as one gets more knowledge about the diet for diabetics, may be like the counting carbohydrate meal plan or constant carbohydrate plan. But there is no common diet that works for everyone.