A wholefood diet means predominantly plant-based foods, preferably unprocessed. Essentially a lacto-vegetarian diet: fruit, raw or steamed vegetables, pulses, cereal products and dairy products. Refined sugar, artificial additives and industrially manufactured products are avoided. The food is freshly prepared.
Various names are mentioned as the first creators and inventors:
Werner Kollath
Maximilian Oskar Bircher-Benner
Claus Leitzmann, Karl von Koerber and Thomas Männle
The German Nutrition Society (DGE) has published a table of wholesome nutrition, taking into account ecological and sustainable aspects (see references 3 and 4).