Bright light exposure between 17 to 24 hours after waking can deplete melatonin and shift the circadian clock. — Whalespan
Bright light exposure between 17 to 24 hours after waking can deplete melatonin and shift the circadian clock.
⚠ High risk
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.
◐PARTIALLYSUPPORTED
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High-risk intervention — consult a physician before acting.Drug-drug interactions, dose-dependence, and screening contraindications apply.
“Because if you get light in your eyes that's any brighter than that, you're going to severely deplete your melatonin levels. You're going to severely shift your circadian clock and it's effectively like traveling to another time zone.”