Urge for food is decreased by enhancing catecholamine or serotonin, two chemicals within the mind which affect appetite and mood. Whole grains should also replace white bread and pasta, to help you make enough energy to exercise and do the things that you need to do. Some diet tips that would prove useful to you are, try to consume foods in boiled and raw form and use less oil in cooking. We tend to ingest/inhale certain toxins every day.