[Nutrient and energy administration with formula diets, exemplified by Crohn disease. 1. Classification and composition of formula diets and use in Crohn disease].

For the dietetic therapy of Crohn's Disease a large number of industrially manufactured balanced formula diets ("Bilanzierte Formula-Diäten") are available. The term "Bilanzierung" is discussed. Based on the biochemical characteristics of the chief ingredients, two main types of formula diets are distinguished: chemically defined or low molecular weight (amino acid, [oligo-]peptide) diets, and nutrient-defined or high molecular weight diets. A survey of 14 formula diets used for children with Crohn's Disease, and based on these chemical differences is presented.