this post was submitted on 14 Apr 2024
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For some that's definitely true. It's well known that light (especially Edit: blue-to-yellow as per below) can disrupt someone's circadian rhythm.
Wow you had that source fast... Nicely done
im aware too much light is bad but didnt they disprove the blue light thing?
Did they? I'll have to look. I know reputable sources were talking about blue light specifically as of a few years ago, but science always changes so it's possible. I'd love a link if you've got it, but don't feel obligated.
i remember reading a study a couple of years ago but i wouldnt be able to find it again. in any case i still use blue light filters for the reduced eye strain and light amount at night.
Thank you for replying, because it reminded me to look for actual studies today :) Edit: If you want a TL:DR, I found this article which describes the study I found below in less technical terms. Basically it may not just be blue light that's bad (supporting what you said), although using blue-light blockers and night modes is still a good idea.
I found this 2023 study that (via a lot of technical detail) basically says it doesn't matter if the light is blue or yellow. The authors say theirs was a smaller study limited to 16 participants and shorter exposure times by budget constraints, but it supports what you said. If you scroll down to the last paragraph they say exposure to short-wavelength light (blue-to-yellow) should be reduced in the evening, and recommend phones, computers etc. have various kinds of night modes and that they be used.
So the summary seems to be that there's a study that says blue light IS hard on sleep, but it's not just blue light - it's all light with more energy than red/orange light (i.e. the light you'd get naturally at sunset). It's just one study and a small one, but that may be what you read and it's a good starting point for further research.
thats exactly the one i read. thanks for sharing your research.
Thanks for sharing yours too! Science is always about getting it more and more right.