Andrew Huberman· PhD
And the only thing you need to know is that light activates these particular cells, the intrinsically photosensitive melanopsin cells, which in turn shuts down the production of melatonin from the pineal gland.
Loading…
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.
And the only thing you need to know is that light activates these particular cells, the intrinsically photosensitive melanopsin cells, which in turn shuts down the production of melatonin from the pineal gland.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
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.
So at this point, we can say light powerfully modulates melatonin, meaning it shuts down melatonin. Melatonin is both beneficial for certain tissues and suppressive for other tissues and functions.