This crucial 2011 book by Dr. Mohamed Faraj Al-Marjani addresses the escalating global health crisis of antibiotic resistance. It provides a comprehensive overview of how bacteria develop resistance to life-saving antibiotic drugs, threatening the foundations of modern medicine. The author explains the molecular mechanisms behind resistance, the factors contributing to its spread, and the dire consequences for treating infections, performing surgeries, and protecting vulnerable patients. The work serves as an essential guide for medical professionals, students, and the public to understand this urgent threat and the strategies needed to combat it effectively.