Damage caused by noise accumulates, and measures are required even if you are not aware of hearing loss.
Modern people are exposed to the loud noises of cars, railroads, airplanes, industrial machines, dryers, lawnmowers, music, etc. on a daily basis, and many people should have some noise as part of their daily lives. .. However, the damage caused by such noise gradually accumulates in the ears, and it is said that adverse effects may appear 5 to 20 years after exposure, so listen to the ears from the stage when you have not yet realized the adverse effects of noise. Protecting is important, explains popular science in the scientific media.
How to protect your hearing before it's too late | Popular Science
Noise-induced deafness can occur at 85 decibels (dB), which is quieter than the sound of a lawnmower, and can quickly impair your hearing if you do not properly protect your ears against louder noise. Rock band concerts and emergency vehicle sirens can cause problems within 8 seconds, not just special ones like gunshots and jet roars, and it's safe to be exposed to 90dB noise for up to 4 hours . ..
However, Si Chen, an assistant professor of otolaryngology at the University of Florida School of Medicine, points out that the problem may be 'a loss of some hearing that goes unnoticed.' Hearing damage is cumulative, and repeated exposure to noise continues to steadily reduce hearing, but it can take as long as 5 to 20 years to realize that hearing has deteriorated. And that.
'Generally speaking, the sound of a rock concert is too noisy. Many people come out of the concert hall with tinnitus, which is a sign that the concert sound was too loud and damaged their hearing. The main problem is that many people don't measure noise levels and may experience tinnitus years later, 'Chen commented.
The rough sensation is that if you feel the temptation to close your ears in spite of the noise, the place is above a safe noise level. In addition, the iOS health care app has a hearing care function for earphones or headphones, which allows you to check whether the volume is appropriate. Apple Watch also has the ability to measure ambient noise levels, so you can tell if you're making noise that affects your hearing.
As Chen points out that 'deafness is not reversible in most people,' the hair cells in the inner ear, which are important for hearing sound, do not regenerate once they break, so once the hearing is impaired, the original level. Is difficult to recover.
It may be difficult to understand the seriousness of hearing loss before it actually becomes deaf, but Chen said, 'Slight deafness accumulates over time, so many people have deafness until it's too late. I don't realize it's happening, 'he said, arguing that people exposed to noise need to take action from the stage when they have no subjective symptoms.
In recent years, the number of cases of deafness due to noise is increasing even for small children, and Mr. Chen said that about 12% of children have deafness due to noise, which may lead to delayed language development and learning difficulties. Pointed out that there is. Deafness is also a major problem in the elderly, and it is said that deafness is a major risk of dementia.
Research results show that 'people who cannot hear people in a noisy environment' have a high risk of dementia --GIGAZINE
There are two ways to protect your ears from noise: earplugs and earmuffs. Proper placement is important because earplugs are attached to the ear canal, but earmuffs cover the entire ear, so they are relatively easy to use. It is also important to keep the distance from the source of noisy noise as much as possible and eliminate the cause of the noise as much as possible in order to protect the ears in the modern society covered with noise.
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in Science, Posted by log1h_ik