When people picture hearing damage they picture an explosion. In practice, most of the damage we see was accumulated quietly, over years, by people who never thought of their workplace as especially loud.

How loud is too loud

The rough guide is that sustained exposure above 85 decibels causes damage over time, and every 3 decibels above that halves the safe exposure duration.

  • Normal conversation sits around 60 dB
  • A busy workshop or heavy traffic, around 85 dB
  • An angle grinder or chainsaw, 100 to 110 dB
  • A nail gun or firearm, 140 dB and above

At 85 dB you have around eight hours. At 100 dB you have roughly fifteen minutes. Most people running a grinder do not think of fifteen minutes as a limit.

The occupations we see most

Construction and trades, manufacturing, agriculture, mining, emergency services, defence, and musicians and sound engineers. Also hospitality staff who spent years in loud venues, and anyone who spent their twenties in front of a speaker stack.

The pattern is almost always the same. Decades of exposure, no protection or inconsistent protection, and tinnitus arriving long after the job changed.

Why it shows up years later

Noise damages the hair cells in the cochlea, and they do not regenerate. Early damage often affects frequencies you do not use much in conversation, so you notice nothing.

As the loss accumulates and the brain loses more input, it compensates by increasing gain along the auditory pathway. That is when tinnitus appears. The exposure and the symptom can be separated by decades, which is why so many people cannot point to a cause.

What you can still do

Existing damage will not reverse, but this matters anyway:

  • Protect what you have. Custom moulded plugs are far more likely to be worn consistently than foam.
  • Get a baseline audiogram, so future change can be measured rather than guessed at.
  • Treat the tinnitus rather than waiting. Habituation works regardless of the original cause.
  • If your hearing loss is work related, there may be a compensation pathway. We can point you to it.

If you have already got the ringing

Noise related tinnitus responds to the same programs as any other kind. The damage in the ear is permanent, but the distress the brain attaches to the signal is not, and that is what determines quality of life.