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.
What this study shows is that, viewing red light for a few minutes each morning can have positive effects on mitochondria in a particular retinal cell type, that tends to degenerate or decline in function with age in humans.
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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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And it's affecting a very specific form of visual improvement, which is acuity, kind of fine detail stuff in a particular wavelength. So, particular colors and objects and things.
what we believe is going on is that this red light is actually stimulating these mitochondria to produce more ATP and it's improving the sensitivity
So red light is affecting mitochondria, mitochondria have the ability to signal cell death, and we're drawing back the probability of that cell dying.
and then they did the same thing with the red light and the red light actually improved it from the control