Bryan Johnson· Author
By age 65, ~1 in 3 people have measurable hearing loss.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
By age 65, ~1 in 3 people have measurable hearing loss.
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By age 75, it’s ~1 in 2.