In this Wednesday, Feb. 22, 2017 photo, Matt Garlock, of Mansfield, Mass., poses for a photo in a bar in Somerville, Mass. The 29-year old has trouble making out what his friends say in loud bars, but when he got a hearing test, the result was normal. Scientists have been finding evidence that loud noise, from rock concerts, leaf blowers, power tools and the like, damages our hearing in a previously unsuspected way. It may not be immediately noticeable, and it does not show up in standard hearing tests. (AP Photo/Steven Senne)
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