Hearing Loss Prevention and Protection

NRR stands for noise reduction rating. It is a numerical rating that represents the maximum number of decibels (dB) of a hearing protection device (HPD) for which the intensity of noise can be reduced. Higher NRR values indicate greater sound reduction when these devices are worn correctly.

For the most part, hearing loss is not preventable due to the underlying causes: age (the leading cause of hearing loss), disease, genetics, and injury.

However, hearing loss caused by exposure to overly loud noises (noise-induced hearing loss [NIHL]), which is the second leading cause of hearing loss, is preventable. Adopting healthy hearing habits at an early age can help prevent NIHL.

To protect your hearing from loud noises, understanding “how loud is “too loud” for your ears is essential. It’s important to note however that it’s not just about how loud a sound is, but also how long you’re exposed to it. The following table outlines how long it can take specific dBA levels to start affecting your hearing.