The book "Principles of Medical Biochemistry" is one of the most fundamental and authoritative educational resources for understanding chemical and biological interactions in the human body. This valuable scientific work has been authored by the distinguished professor, Dr. Mohammad Omar Saheem. The book, with its fluent text, systematic organization, and clear scientific diagrams, explains complex concepts of metabolism, hormones, and vital molecules. This work is an excellent reference aligned with the curriculum of the Ministry of Higher Education for students in various medical disciplines in the country.