Dysbacteriosis is one of the serious problems of our time. Its diagnosis and treatment cause difficulties not only for young specialists, but also for doctors with extensive practice. This disease disrupts the functioning of the intestines and other organs and systems of the body, complicating the course of many diseases. Therefore, it is very important to know as much as possible about dysbiosis. The author of this book introduces the reader to the clinical picture of the disease, and also gives recommendations for its treatment with non-drug means.