Hearing loss is a prevalent sensory impairment affecting millions worldwide, impacting one's ability to understand sounds fully. It can range from mild to profound, resulting from various factors including aging, genetic susceptibility, exposure to loud noise, infections and certain medical conditions. Mechanisms of hearing loss involve damage to delicate structures in the inner ear, such as hair cells, which convert sound vibrations into electrical signals for the brain. Prevention strategies include minimizing exposure to loud noises, using ear protection in noisy environments, and avoiding medications that can lead to human auditory system. Treatment options depend on the cause and severity of hearing loss and may include hearing aids, cochlear implants, or surgical interventions. Early detection through regular hearing screenings is important for timely intervention. Moreover, lifestyle modifications, such as a healthy diet and exercise, can promote overall ear health. This book consists of contributions made by international experts on hearing loss. The topics included in this book on hearing loss are of utmost significance and bound to provide incredible insights to readers. It is meant for students who are looking for an elaborate reference text on this subject.