The textbook "Physiological Chemistry" offers a comprehensive and detailed analysis of the chemical foundations essential for understanding biological processes. It covers a wide range of topics, from water and bioelements to carbohydrates, lipids, and proteins, as well as complex metabolic pathways and the function of nucleic acids. The structure of the book allows readers to systematically engage with the various aspects of physiological chemistry. Additionally, important topics such as biocatalysis, the regulation of protein biosynthesis, and the role of vitamins and trace elements in nutrition are discussed. The book is of great value to both students and professionals in the fields of medicine, biochemistry, and related sciences.