It’s not the sound

About 75% of people with tinnitus describe it as no problem, or only a minor one. The other 25% experience real distress — anxiety, sleep disruption, trouble concentrating, a sense that tinnitus has taken over their life.

Here’s what’s striking: when researchers carefully measure the tinnitus itself — its pitch, its loudness, whether it’s constant or comes and goes — these two groups look the same. The sound itself doesn’t predict the suffering.

So what does? How the brain responds to it. Some brains register tinnitus as background noise — meaningless, safe to tune out. Over time, these people habituate. They stop noticing tinnitus unless they go looking for it.

Other brains, through no fault of the person, decide tinnitus is a threat. That’s where the trouble starts.

When the brain decides tinnitus is a threat

Deep in the brain is a small structure called the amygdala — the brain's alarm system, responsible for detecting threats and triggering the body's fight-or-flight response. When the amygdala tags tinnitus as dangerous, that alarm goes off: the chest tightens, the nervous system revs up, ready to act.

But tinnitus isn't something that can be fought off or escaped. The alarm has nowhere to go.

The amygdala does something else, too — it sharpens attention toward whatever it considers a threat. That's useful if there's a real danger nearby. Aimed at tinnitus, though, it backfires: the more attention tinnitus gets, the more present it becomes, and the louder it seems.