"Everyone realizes that normal and healthy food is food with appetite, any other food, food by order, by calculation, is recognized as evil to a greater or lesser extent," wrote Academician I.P. Pavlov. You have an unusual book. Its main feature is that the stomach, its diseases, as well as their prevention and treatment are considered in the "context" of the whole organism, in close connection with the lifestyle and thoughts of a person. The author draws the attention of readers to many "little things" to which we usually do not attach any importance, do not notice their impact on the state of the gastrointestinal tract and health in general. The book is not a dry narrative about diseases, but a fascinating journey into a world called the "human body." For a wide range of readers.