Carbohydrates are a main source of energy

Carbohydrates include the two main classes: starches and sugars. They are one of the primary sources of energy of our diet. One gram of carbohydrate yields 4 calories of energy. The amount of carbohydrates necessary in the daily diet is very variable and also depends on the amount of it eaten with the protein in meals. The average American adult consumes anywhere from 150 to 400 grams of