Hearing Loss

Causes and Prevention

Causes of Hearing Loss

Hearing loss happens for many reasons. Some people lose their hearing slowly as they age. This condition is called presbycusis. Doctors do not know why presbycusis happens, but it seems to run in families.

Another cause is the ear infection otitis media, which can lead to long-term hearing loss if it is not treated.

Hearing loss can also result from taking certain medications. "Ototoxic" medications damage the inner ear, sometimes permanently. Some antibiotics are ototoxic. Even aspirin at some dosages can cause problems, but they are temporary. Check with your doctor if you notice a problem while taking a medication.

Heredity can cause hearing loss, but not all inherited forms of hearing loss take place at birth. Some forms can show up later in life. In otosclerosis, which is thought to be a hereditary disease, an abnormal growth of bone prevents structures within the ear from working properly. A severe blow to the head also can cause hearing loss.

Loud Noise Can Cause Hearing Loss

One of the most common causes of hearing loss is loud noise. Loud noise can permanently damage the inner ear. Loud noise also contributes to tinnitus, which is a ringing, roaring, clicking, hissing, or buzzing sound in the ears.

Approximately 15 percent (26 million) of Americans between the ages of 20 and 69 have high frequency hearing loss due to exposure to loud sounds or noise at work or in leisure activities.

Avoiding Noise-Induced Hearing Loss

Noise-induced hearing loss is 100 percent preventable. You can protect your hearing by avoiding noises at or above 85 decibels in loudness, which can damage your inner ear. These include gas lawnmowers, snowblowers, motorcycles, firecrackers, and loud music.

Lower the volume on personal stereo systems and televisions. When you are involved in a loud activity, wear earplugs or other hearing protective devices. Be sure to protect children's ears too.

Although awareness of noise levels is important, you should also be aware of how far away you are from loud noise and how long you are exposed to it. Avoid noises that are too loud (85 decibels and above). Reduce the sound if you can, or wear ear protection if you cannot. Potential damage from noise is caused by the loudness of the sound and the amount of time you are exposed to it. If you experience tinnitus or have trouble hearing after noise exposure, then you have been exposed to too much noise.

Other Ways to Prevent Hearing Loss

There are other ways to prevent hearing loss.