Did you know that the kidneys are located in the upper abdomen? That one is normally higher than the other? Were they supposed to cleanse the blood of toxins? They also produce a hormone that maintains our blood pressure. And they contain 25,000 capillaries. And a million filter elements. Surprised? Want to know more about these inconspicuous beans that cleanse our bodies? Then you picked up the right book. You will learn to determine the presence of pathologies in the body by carefully examining the products of your vital activity; you will finally stop being ashamed of talking about the genitals and understand how closely they are connected with the work of the kidneys.