This book is dedicated to the evolution of human nutrition. This means that if your mind is open to new knowledge and self-development, you will find a lot of interesting and useful information in it. It just so happens that the information environment of both traditionally eating people and all kinds of raw foodists and “prano-eaters” is filled with misconceptions and erroneous interpretations of facts. From categorical statements about the indispensability of animal protein or fanatical beliefs that “only a monotrophic raw food diet can heal a person,” to an absolutely insane denial of modern scientific knowledge about the chemical composition and energy value of food. That is why the main purpose of this book is a scientific description of the most important principles and features of the most optimal nutrition system - fruitarianism. From the position of a person whose priority is to build a healthy, strong and resilient physical body. Touching this knowledge requires a thoughtful approach from a person and freedom from ignorance, prejudices and stereotypes of behavior existing in society. Therefore, the main assistants in understanding the information presented for the reader will be experiment, logic and prudence, and the main obstacle will be fanaticism and a biased attitude towards science.