Can I prevent or slow down early-stage hearing loss?
Noise-induced hearing loss is largely preventable by limiting exposure to sounds above 85 dB(A) and wearing hearing protection. Once the damage is permanent, there is no going back.
Prevention is literally the only effective strategy here. Once permanent damage to your hearing has occurred, it cannot be undone by any treatment or supplement.
Damage occurs with repeated exposure to sounds of 85 dB(A) or more for eight hours a day. Below 75 dB(A) there is probably no lasting risk. A busy nightclub, a rock concert, or music at high volume through earbuds can easily reach 100 dB(A) or more. As a result, young people are increasingly experiencing hearing loss at an early age.
There is, however, an early stage that is still reversible: auditory fatigue. Do sounds seem muffled after a concert, or do you have a ringing in your ears? If so, your hair cells are overloaded. If you rest in time, your hearing can partially recover. If you keep up the exposure without sufficient recovery periods, the damage becomes permanent step by step.
The best protection in the workplace is tackling the noise source itself, through noise dampeners or acoustic shielding. Earplugs or earmuffs help, but are only truly effective as a supplement to these measures. The same applies outside work: earplugs at a concert only work if you wear them consistently and they fit properly.
In practical terms: keep music through earbuds below 60 percent of maximum volume, limit listening time, wear hearing protection in noisy environments, and consciously plan recovery time after exposure to loud sounds. Research into medications or antioxidants that prevent damage to the hair cells of the inner ear is ongoing, but has not yet produced anything proven to work in humans.
Seven controlled claims, based on five to six studies from epidemiological, audiological and guideline-based research. The damage threshold of 85 dB(A) and the irreversibility of permanent damage are causally and strongly substantiated. The evidence for social noise, auditory fatigue and prevention programmes is moderate. For education and pharmacological protection, the evidence is limited and associative.