LED lighting badly suppresses human melatonin production at night

Post by yanko » Fri, Feb 24, 2023, 7:29 AM UTC

londons_explore wrote: post #185

koverda wrote: post #107

Regarding the quoted e-book study: > Third, in the present study, the LE-eBook was set to maximum brightness throughout the 4-h reading session, whereas, by comparison, the print-book condition consisted of reflected exposure to very dim light. Yeah, max brightness is probably going to make an impact. I bet if you were in a room with a bright light reading a book, with an equivalent amount of lumens going into your e…

I am disappointed that many phones/tablets don't go very dim. From flagship to cheap, it seems that if you're in a pitch black room and check the time on your phone, the light will illuminate the whole room, even on the dimmest setting. I actually modded my phone by putting a resistor in the LED backlight circuit, which divided the brightness by 1000 - and it was still plenty bright at night (human eyes are logarithm…

Post by regularfry » Fri, Feb 24, 2023, 8:08 AM UTC

marcell wrote: post #295

regularfry wrote: post #192

Earlier quoted context omitted.

> Yet we can see both clearly in the data. If you want to escape these changes, you can only get answers outside of scientific knowledge. Those would be not answers , then.

This is a common misconception. I don't need science to tell me not eat dirt, my sense of smell does that just fine. I also don't need science to tell me why someone is being mean to me, I can judge the social situation and make a good guess. Science is great and gives lots of really good answers, but there are lots and lots of other ways to get answer.

Post by sundvor » Fri, Feb 24, 2023, 10:13 AM UTC

etherael wrote: post #202

sundvor wrote: post #77

Earlier quoted context omitted.

Somewhat likewise I set my Hue lights to red or a dark orange at night; this seems to work well, at least for me.

There's even a home assistant blueprint that is quite nice for matching the external colour temperature for LED lights that support it, it's basically flux for your LED Lights. https://gist.github.com/HarvsG/cc86381dc99169159d6d4cd870c36... This plus dimming plus red lights in the bedroom and flux for devices I have found works pretty well.

Post by skhm » Fri, Feb 24, 2023, 11:51 AM UTC

agravier wrote: post #231

_dan wrote: post #223

Earlier quoted context omitted.

A Macbook's minimum brightness is quite bright. The thing that annoys me no end is that if you hit the "dim" button when it's at minimum brightness, it goes black - but fades out slowly and smoothly. So they're clearly capable of being dimmer, but Apple decided we're not allowed that.

I've been using https://lunar.fyi/ to go below the min brightness and also beyond the max brightness on an M1, works very well.

Post by beagle3 » Fri, Feb 24, 2023, 3:31 PM UTC

jahsome wrote: post #21

karmaMeansCool wrote: post #15

There are also probably very personal and biological variables involved too that the post doesn't mention. I stare into monitors and phones all day long. Every light in the house is full-blown LED. I can't help but fall asleep at 20:00 in an led lit room watching led TVs, while my led phone drops onto the floor after I've fallen asleep. I've been in an extreme LED environment for over a decade and never have problems…

I've battled the opposite in the form of clinical, anxiety-driven insomnia my whole life. I've found it utterly debilitating at times and have quite literally struggled since birth, long before electronics and LEDs were common. I can confidently say you're so right about the number (and type) of variables. Sleep hygiene as we say in the biz is a very complex and personal issue. I've tried everything under the sun fro…