Have you Heard? A message from Hearing Health Foundation, a nonprofit whose mission is to prevent, treat, and cure hearing loss and to promote hearing health. Noise-induced hearing loss (NIHL) is not hearing loss that you are born with. It is hearing loss that is caused by loud noise that damages hair cells in your inner ear. If you have hearing loss in one or both ears, it is important to take care of the residual hearing that you have. Use these tips to preserve your hearin