Cornstarch increases calories, as one spoonful of it contains 30 calories, but it is indicated that it does not affect the appetite of the individual, and to prepare it, it is preferable to mix small amounts of cornstarch with foods that are intended to be thickened, such as: milk, sweets, mashed potatoes, or cereals. Cornstarch contains carbohydrates, as one tablespoon of cornstarch contains 8 grams of carbohydrates, as it is a source of energy and nutrition for basic body functions, including heart palpitations, breathing, brain, and increased activity. Cornstarch helps manage low blood sugar in people with diabetes, but care should be taken to consult a doctor or nutritionist before adding cornstarch to your metabolism.