Our life is not a sprint "to lose weight for the summer", but a marathon "to be healthy and energetic for many years and avoid early aging". In nutrition, it is important to respect the golden mean, taking into account scientific advice, traditional practices and individual characteristics. No one knows us better than ourselves. If we include the understanding of the basic processes to this knowledge, we will be able to make correct and healthy decisions. The Doctor's Book, Ph.D. and teacher Andrey Beloveshkin is a set of flexible rules, each of which can be followed separately. The rules in the diet, the choice of products and the psychology of eating answer the most important questions: when to eat, what to eat and how to eat. Attention! The information contained in this book cannot replace a doctor's advice. Before taking any of the recommended actions, consult a specialist.