A total of 54 contributors in 30 chapters present the reader with a basic understanding of the physiology of eating, digestion, absorption, substrate metabolism and nutrient requirements. The current "state of the art" of new diets, enteral delivery systems and methods is described and specific indications for enteral feeding are discussed in detail with emphasis on the requirements and feeding techniques for different diseases. Other interesting aspects covered are: animal models for enteral feeding of defined formula diets; pharmacologic aspects of enteral nutrition; the use of computers in nutrition support; complications and their prevention.