The book "Biologically active substances of food products" by B. In. Petrushevsky and other specialists is a unique and in-depth study that opens up a world for the reader, full of mysteries and opportunities hidden in the usual food. This work is not just a scientific work, but a real encyclopedia devoted to biologically active substances that are contained in food and have a significant impact on human health. In this book, the authors consider in detail various groups of biologically active substances, such as vitamins, minerals, antioxidants, polyphenols and many others. They explain how these components affect metabolism, immune system, and overall health. The reader will be able to find out what products are the sources of these substances, and how their proper combination can contribute to improving the quality of life. The book will be of interest not only to professional nutritionists, nutritionists and doctors, but also to a wide range of readers seeking to improve their health and consciously fit to their diet. If you are interested in a healthy lifestyle, want to understand nutrition or just looking for new knowledge about what you eat, this book will be a real discovery for you. The topics raised in the book are more relevant than ever. In today's world, where health is becoming a priority, understanding the role of biologically active substances in nutrition is the key to preventing many diseases. The authors focus on how poor nutrition and lack of essential substances can lead to a variety of ailments, from simple allergies to serious chronic diseases. They also discuss how modern technologies and methods of processing products affect