What is the impact of long-term exposure to moderate-level noise (75-85 dB)?

Long-term exposure to moderate-level noise, particularly within the range of 75-85 dB, can indeed lead to permanent hearing damage over time. This occurs because consistent exposure to noise levels in this range can cause cumulative stress on the hair cells within the cochlea of the inner ear, which are crucial for hearing. When these cells become damaged or destroyed due to prolonged exposure, they do not regenerate, resulting in irreversible hearing loss.

Additionally, the effects of such noise exposure are not limited to immediate symptoms; they can manifest as a gradual decline in hearing ability, often unnoticed until significant damage has occurred. While temporary hearing loss can occur after brief exposure to high levels of noise, moderate-level noise can present a more insidious risk due to its often unnoticed long-term effects. Unlike higher noise levels that create an immediate risk, moderate noise can lead to chronic exposure scenarios that increase the likelihood of significant auditory impairment, emphasizing the importance of implementing hearing conservation measures even at seemingly moderate levels.