Nutritional Therapy and treatment uses food to prevent and reverse diseases that plague most western societies: diabetes, obesity, heart disease, arthritis, and depression. In order for food to be therapeutic, it must be nutrient-dense, measured in part by the nutrients and anti-nutrients, contained in consumed foods. Nutritional Therapy is also concerned with the way that foods are prepared and delivered for consumption. In order for foods to be therapeutically beneficial, the appropriate micro- and macronutrients must be delivered in a nutritionally dense format without contaminants.