Loud noises
If you’ve even been to a concert you know what it feels like to have your ears ring or rush for hours afterwards. That cotton-ball feeling is a sign of permanent damage to the cells in your inner ears. Sure, your hearing may seem to be back to normal in a few days, but you can’t ever heal that damage. “The number one preventable cause of hearing loss in adults is noise exposure,” says Alison M. Grimes, AuD, the director of audiology at UCLA Medical Center.