We’re embarrassed to admit it, but at first we saw nothing remarkable about the most detailed map of hearing loss we’ve ever seen . We’re embarrassed to admit it, but at first we saw nothing remarkable about the most detailed map of hearing loss we’ve ever seen . The result of a broad effort funded by the Centers for Disease Control and Prevention, the map revealed that about 38 million Americans have at least some trouble hearing in both ears and that hearing loss is greatest in areas with the oldest populations.