Ears are 'protruding brains'; neglecting hearing loss can also open the door to dementia

Our ears are subjected to a harsh environment in modern society, constantly bombarded by noise levels exceeding 85 decibels, the threshold for hearing damage. From subway rumbles to cafe chatter, and especially with the widespread use of earphones and headphones, daily life is a relentless assault on our hearing. This continuous exposure, even below explosive levels, gradually damages auditory cells, and when combined with natural aging, leads to rapid and severe hearing loss.

This hearing decline is now strongly linked to dementia. Leading medical journals have published research indicating that individuals with hearing loss develop dementia earlier. While previously thought to be a mere precursor, the scientific consensus is shifting towards the understanding that actively treating and preventing hearing loss can delay or even inhibit the onset of dementia. The brain, receiving fewer auditory stimuli due to hearing impairment, experiences a decline in cognitive function. Conversely, using hearing aids or cochlear implants to restore auditory stimulation to the brain has been clinically shown to slow dementia progression.

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The human ear is designed as a 'survival warning' sensor, sensitive to the faint footsteps of predators like lions or tigers. With such a delicate ear, enduring subway noise all day and listening to music close to a roar with earplugs is bound to make the ear tired and sick.

Despite the clear benefits, a significant stigma surrounds hearing aids, often perceived as a symbol of aging. Unlike eyeglasses, which are readily accepted, hearing aids are frequently rejected, even by elderly individuals. Furthermore, a common misconception is that hearing aids are only for those who are completely deaf, rendering them useless for individuals with partial hearing loss. In reality, hearing aids amplify sound and are most effective when used during the "less hearing" stages, before complete hearing loss occurs. Addressing hearing loss promptly is crucial, as the ability to discern speech, known as "speech discrimination," can deteriorate significantly and become difficult to recover, leading to increased cognitive load and social isolation.

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The hearing aid is useless once hearing is completely lost, just as glasses are useless for someone who has completely lost their sight.