In recent years, a huge amount of research has been devoted to weight normalization, scientific papers are written on this topic, television shows are devoted to weight, and not only women, but also men constantly think about it. In order to make their body similar to the conventional parameters now accepted in society, people are ready to do anything: they go under the surgeon’s knife, do exhausting exercises, take untested means for losing weight, go on heavy and harmful diets, it happens that they even refuse food altogether, acquiring terrible and irreversible diseases. How to lose weight and not get sick? This is exactly what this book is about: what actually happens in our body every time we put another piece of treat into our mouth; how, without risk, to return to your body the ability to use this piece not for evil, but for good; about malicious advertising, about the main ways to deceive a client who naively expects a miracle, about established misconceptions in science and society. The book is addressed to everyone who wants not only to lose weight, but also to maintain health.