The food we eat provides the fuel used by our bodies for everyday activities, and the materials needed to help the body grow. Unlike cars which can only run on gasoline, the body is designed to use three main fuels including carbohydrates, fats, and protein. Carbohydrates are the primary component of sugars, starch, and flour which come mostly from plants. Fats come in two broad types: saturated fats, like butter, which mostly come from animals, and...