Food has been a basic part of our existence. Nutrition has been defined as food at work in the body. Nutrients are components of food required by the body in an adequate amount in order to grow reproduce and lead a normal, healthy lifestyle. These include water, Proteins, Lipids, Carbohydrates, Vitamins, and Minerals. Diet therapy is specially designed and prescribed for general or medical nutritional purposes.

Diet Therapy is a normal diet modified as per the need of the individual's general or medical nutritional purpose with the basic objective of maintaining goof heath or restore good health.