Everyone has the right to have a sufficient level of knowledge about his body necessary for the prevention (prevention) of disorders leading to various diseases. In fact, everyone makes a choice himself: "to follow the route of hospital corridors from his youth, turning into a decrepit old man in maturity, which I observe in my peers of patients and, to my great surprise, in my medical colleagues, or - the route of travel in the native country, the world, enjoying the opportunity to realize himself in the profession, art, sports, enjoying life, regardless of age!" In my book, I tried to fill the gap in knowledge about our body in terms of assessing the state of its internal environments and hereditary microbiome (a set of microorganisms living in our body). With the help of microscopy, a "living" drop of peripheral blood with an increase of 1000-2000 times, it is possible to see both Health and the Disorders that begin in it, associated with the presence of a specific microflora, characteristic only for each individual, and, therefore, draw up an Individual prevention program and Healthy lifestyle.