Noise-induced Hearing Loss

When Noise Hurts Noise induced hearing loss (NIHL) is irreversible hearing damage resulting from exposure to high levels of noise. NIHL affects an estimated 10 to 15 million people in the USA, making excessive noise exposure the most common cause of hearing loss. What causes NIHL? Exposure to traumatic noise will cause permanent damage to the sensitive hair cells of the inner ear and possibly the hearing nerve. NIHL is related to both noise intensity and the duration of exposure. Louder sounds require shorter exposures before damage occurs. Why? Because a 10 dB increase in sound level causes a 10 …

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