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Could hearing loss be treated with a shot to the ear?

February 22, 2017View for printing

If you've ever been warned about listening to too much loud music, then you may have heard that the sound-processing cells in our inner ear are killed by loud noises ... and they don't regenerate. Well, it's true. Known as hair cells, they detect sound waves and convert them into nerve signals. We start out with only about 15,000 of them in each cochlea, and once any of them are gone, they're gone for good. There may now be hope for restoring that lost hearing, however, as scientists have reported a new method of regrowing hair cells in substantial numbers.

Ben Coxworth

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