This book is addressed to people of all ages, all nationalities, specialties, and any social and political status. It is written to eliminate ignorance and misconceptions in the medical field. After all, medicine is not only a specialty, but, first of all, human knowledge of oneself, which allows one to adapt one’s life and the life of one’s children to the biorhythms of earthly Nature and space. This knowledge helps to navigate correctly in society and Nature, to be happy and healthy, and in case of illness, to understand its patterns and correct the disturbed balance. The book gives basic information and concepts about what health and illness are, what are the causes of a wide variety of ailments, how can they be prevented by eliminating these causes. “Your health is in your hands!” - and this is actually true. know how to be healthy and not depend on doctors, medications and pharmacies!