According to the National Institute on Deafness and Other Communication Disorders (NIDCD), approximately 36 million Americans experience hearing loss. In addition, the NIDCD estimates that approximately 15%, or 26 million, of Americans between 20 and 69 years of age have hearing loss attributable at least in part to exposure to loud sounds, either at work or recreationally.
It doesn't take a thunderous rock concert to cause noise-induced hearing loss. Any repeated high-volume experiences or one-shot booms can damage the delicate nerve cells of your inner ear. And once damaged, these cells do not grow back. A good rule of thumb is that damage is occurring if you have to shout to be heard over the racket.
Here are some everyday activities that carry with them possible hearing loss due to damaging noise levels. You should consider using earplugs when you engage in them.
The Occupational Safety and Health Administration has done a good job of setting safe noise levels in industry. Although many people use ear protection at work, they often don't take the same precaution at home, experts say. A motorcycle, firecrackers, and small firearms all produce sound between 120 and 150 decibels (dB), enough to damage hearing, according to the NIDCD.
Shooters are exposed to extremely loud but short term sound when a weapon is fired. All shooters should wear hearing protectors even when shooting small caliber weapons such as a 22 rifle. The NIDCD reports that long and repetitive exposure to noise levels at 85 dB or higher can cause noise induced hearing loss. Sound levels of firearms may reach 120 or greater decibels during firing. Here are some examples reported by the Centers for Disease Control and Prevention (CDC):
12-gauge shotgun, 154.6 to 162.7 dB
0.45-70 rifle, 155.2 to 159.9 dB
0.30-06 rifle, 158.7 to 163.1 dB
Shrill infant toys and bike horns can emit quick bursts of damaging noise when repeatedly pressed or squeezed. The American Academy of Pediatricians warns parents that media players–iPods, MP3 players–can cause noise-induced hearing loss. Ear phone or ear buds for these devices can reach a damaging noise level up to 130 dB.
Busy traffic and highway construction can cause ringing or a sense of fullness in the ears–key signs that hearing damage has occurred. When highway noise gets deafening, drive with the windows up. According to the CDC, traffic sounds of 85 dB or greater for long periods of time can create permanent hearing loss.
Compare some of these common sounds and their rank of potential harm with what your ears are exposed to every day:
20 dB - rustling leaves
38 dB - whisper
40 dB - refrigerator humming
40 dB - quiet room
50 dB - moderate rainfall
60 dB - dishwasher, conversation
70 dB - vacuum cleaner
80 dB - busy street, alarm clock
88 dB - motorcycle (25 feet)
90 dB - lawnmower, food blender
100 dB - chainsaw, snowmobile
110 dB - symphony orchestra
120 dB - oxygen torch
130 dB - shotgun
140 dB - jet plane take-off (near)
150 dB - rock concert (peak)