Noise pollution and hearing health have emerged as critical yet underappreciated public health challenges of the modern world. Since the publication of the first edition of this book, significant advances have occurred in auditory neuroscience, diagnostic technologies, and preventive strategies. The expanding evidence base has reinforced the concept that noise-related auditory injury extends far beyond measurable hearing loss, encompassing synaptic damage, neural dysfunction, cognitive consequences, and psychosocial impact. The primary aim of this book remains to bridge the gap between basic science, clinical practice, and public health. It is intended for medical students, postgraduate trainees, otolaryngologists, audiologists, public health professionals, and policymakers. By emphasizing prevention alongside innovation, this edition aspires to contribute meaningfully to global efforts to preserve hearing health in an increasingly noisy world. Noise is one of the most pervasive environmental exposures of our time, yet its health consequences remain inadequately recognized. This book provides a timely, authoritative, and comprehensive examination of noise-related auditory disorders, integrating scientific rigor with clinical insight and public health relevance. By moving beyond traditional audiometric concepts and highlighting synaptic and neural injury, this work challenges conventional thinking and encourages a more nuanced approach to diagnosis and prevention. It will serve as a valuable reference for clinicians and an important resource for educators and policymakers seeking evidence-based guidance in addressing noise pollution and its far-reaching effects.