Bryan Johnson· Author
Less auditory input leads to less stimulation, so brain regions tied to sound and cognition atrophy from underuse. This ‘use it or lose it’ effect is real and permanent.
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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.
Less auditory input leads to less stimulation, so brain regions tied to sound and cognition atrophy from underuse. This ‘use it or lose it’ effect is real and permanent.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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