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Noise Pollution Can Cause Hearing Damage
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Noise Pollution Can Cause Hearing Damage

Noise pollution is a contributing factor to partial hearing loss, said Dr. Majid Haddadi-Avval, audiologist and faculty member of Mashhad University of Medical Sciences. “Exposure to some common sounds can cause permanent damage. With extended exposure, noises that reach a decibel level of 85 can cause permanent damage to the cochlea hair cells in the inner ear, leading to hearing loss,” he told Mehr News Agency. Many common sounds may be louder than people think they are. A bulldozer that is idling (not actively bulldozing) is loud enough at 85 dB that it can cause permanent damage after only one work day (8 hours). When listening to a personal music system with stock earphones at a maximum volume, the sound generated can reach a level of over 100 dB, loud enough to start causing permanent damage with just 15 minutes per day, he noted.

 

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