Andrew Huberman· PhD
wearing blue-light blocking sunglasses during the daytime is opposite your actual biological needs
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We can't find evidence that holds up here. Proponents are reasoning from mechanism or analogy rather than direct human data, and the most credible skeptics raise objections we can't dismiss.
wearing blue-light blocking sunglasses during the daytime is opposite your actual biological needs
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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.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
And in a kind of odd twist of misinformation out there, a lot of people wear blue blockers during the middle of the day, which basically makes no sense because during the middle of the day is when you want to get a lot of bright light and including blue light into your eyes, correct?
And in fact, you're probably doing yourself a disservice by wearing them in the morning and in the daytime.
10 minutes of bright outdoor light within the first hour of waking anchors the circadian phase and improves sleep onset that night.
Morning sunlight exposure shifts the cortisol awakening response forward, improving daytime alertness.
Long-term morning sunlight reduces age-related macular degeneration risk.
Sleep regularity predicts all-cause mortality more strongly than sleep duration.
Tracking deep sleep on a wearable accurately reflects EEG-measured slow-wave sleep.
Caffeine has a half-life long enough that consumption after 2pm measurably degrades deep sleep in slow metabolizers.