![]() The biggest concern is that as hearing worsens over time, people may lose some ability to distinguish consonants and understand speech. Hearing damage from loud music is not always permanent, but prolonged exposure to loud noise can lead to health problems such as hypertension and tinnitus, or ringing in the ears. "It depends on what you call major hearing loss, but there are a couple of cases (among children and teenagers) where using headphones contributed to a person's hearing loss that was enough that they needed to use hearing aids," Fligor said. These cases generally involved other factors contributing to the problem but were mainly music-related. Since the iPod was introduced in 2001, hearing loss has been an obvious problem among young patients of Brian Fligor, an audiologist at the Boston Children's Hospital. An iPod's maximum volume is more than 10 times as loud as the recommended listening setting, audiologists say, and the sensory damage caused by prolonged listening is irreversible. Portable music players may be contributing to permanent hearing loss among many casual listeners, gradually leading to the inability to discern speech.
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