Recently, the word "diet" has become especially fashionable. Doctors and nutritionists offer many different diets. But how to choose the most suitable one? How with its help to harmonize the activity of the body in accordance with its individual characteristics, normalize weight, improve well-being, find your "style" in nutrition? This book will try to answer all these questions. It contains historical facts from dietetics, well-known and little-known recommendations of specialists in dietary nutrition and supporters of alternative medicine, characteristics of the main products and advice on their use are given, the possible negative consequences of passion for a particular exotic diet are considered.