Hearing runs on irreplaceable hardware: some 15,000 hair cells per ear convert vibration into nerve signals, they do not regenerate, and their gradual loss — from years, noise and genetics — is why one in three people over 65 has meaningful hearing loss. Tinnitus, the phantom ringing that afflicts 10–25% of adults, is usually that loss's companion: when input fades, the brain's auditory circuits turn up their gain, and what they amplify is their own noise.
Three ideas organize this hub. First, hearing loss is a health event, not just an inconvenience — untreated, it isolates, and it stands among the largest modifiable risk factors for cognitive decline; hearing aids measurably help both. Second, tinnitus is manageable rather than curable — sound therapy, habituation-based approaches and treating the hearing loss beneath it have evidence; the pills sold against it do not, and we say so plainly. Third, sudden hearing loss in one ear is an emergency with a steroid treatment window measured in days — the single most consequential fact on these pages, and the least known.
The product research section applies this site's rules to "ear health" supplements — a category built almost entirely on ingredients tested for other purposes, graded here against what trials actually found.