Andrew Huberman· PhD
You give it 3 minutes, 5 minutes of exposure once every 5 days or so. And is that going to be sufficient?
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
You give it 3 minutes, 5 minutes of exposure once every 5 days or so. And is that going to be sufficient?
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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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Participants who were exposed to 670nm of deep red light for 3 minutes in the morning between 8-9 am experienced a 17-20% improvement in color vision up to a week later.
A small study found that red light therapy (670 nm) improved eyesight in individuals over the age of 40 but had no effect on younger individuals. The ability to detect colors improved by up to 20% in some individuals.