This food category includes bread, pasta, rice, potatoes and cereal that are all vital sources of energy. Always try to go for whole-wheat products that are loaded with fibers, B-vitamins and iron. Excess amounts of white bread and other processed grains and cereals can affect your blood sugar levels in a way that destabilizes your appetite and the need to over-consume carbohydrates. For the above reasons you should always opt for whole-wheat grains and cereals to fulfill the daily requirements of your body.