A person's diet is made up of the food they eat. Diet has an important role in our physical as well as mental health. A balanced diet contains sufficient amounts of fibre and the various nutrients (carbohydrates, fats, proteins, vitamins, and minerals) to ensure good health. Food should also provide the appropriate amount of energy and adequate amounts of water. The diet should not contain items that are harmful. In other words, a balanced diet should be both adequate and wholesome.