When HN users recommended it
2 HN users recommended this between 2015 and 2017, in 4 comments.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
2 HN users recommended this between 2015 and 2017, in 4 comments.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
You can buy ambient lighting that has low blue content, e.g. the "Evening PM" version of the GE Align, http://www.amazon.com/gp/product/B00PLR3M0M
We can only hope that control of blue light emissions will be natively implemented by all phone and tablet manufacturers, to protect the future health of billions of humans. Here are some articles about the impact of blue light on eyes and sleep.
http://thenextweb.com/lifehacks/2014/04/23/7-things-can-righ..., "Blue light is able to pass through what is called the retinohypothalamic tract, or pathway. This pathway is responsible for regulating our circadian rhythm and a number of other biological and behavioral processes."
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831986/, "Hastings and Sweeney’s paper, published in the December 1958 Biological Bulletin, gathered dust for decades. No one thought these findings might hold any relevance for humans, whose circadian rhythms were then widely believed to be relatively insensitive to light. But scientific discoveries in the past two decades have changed all that."
https://theconversation.com/a-dark-night-is-good-for-your-he..., "In the last decade or two it has become clear that the genes which control the endogenous circadian rhythm (the “clock genes”) also control a large part of our entire genome including genes for metabolism (how we process the food we eat), DNA damage response (how we are protected from toxic chemicals and radiation), and cell cycle regulation and hormone production (how our cells and tissues grow)."
There is room lighting with low-blue content, e.g. the G.E. Align PM bulb, http://www.amazon.com/gp/product/B00PLR3M0M & https://gigaom.com/2014/09/01/what-is-the-blue-light-from-ou..., "It remains unclear whether our screens themselves will soon emit less blue light — Hansler is pessimistic because he says that changing the amount of blue light will be like admitting that the screens are causing health problems, and lawsuits could ensue."
http://thenextweb.com/lifehacks/2014/04/23/7-things-can-righ..., "Blue light is able to pass through what is called the retinohypothalamic tract, or pathway. This pathway is responsible for regulating our circadian rhythm and a number of other biological and behavioral processes."
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831986/, "Hastings and Sweeney’s paper, published in the December 1958 Biological Bulletin, gathered dust for decades. No one thought these findings might hold any relevance for humans, whose circadian rhythms were then widely believed to be relatively insensitive to light. But scientific discoveries in the past two decades have changed all that."
https://theconversation.com/a-dark-night-is-good-for-your-he..., "In the last decade or two it has become clear that the genes which control the endogenous circadian rhythm (the “clock genes”) also control a large part of our entire genome including genes for metabolism (how we process the food we eat), DNA damage response (how we are protected from toxic chemicals and radiation), and cell cycle regulation and hormone production (how our cells and tissues grow)."
There is room lighting with low-blue content, e.g. the G.E. Align PM bulb, http://www.amazon.com/gp/product/B00PLR3M0M & https://gigaom.com/2014/09/01/what-is-the-blue-light-from-ou..., "It remains unclear whether our screens themselves will soon emit less blue light — Hansler is pessimistic because he says that changing the amount of blue light will be like admitting that the screens are causing health problems, and lawsuits could ensue."
I think it's important to recognize that this is far from the only study pointing to this, and that similar problems are associated with CFL's.
For example, here is a 2014 study, "White Light–Emitting Diodes (LEDs) at Domestic Lighting Levels and Retinal Injury in a Rat Model" http://ehp.niehs.nih.gov/1307294/
This article cites numerous studies in the quotes section ( scroll down) http://lowvision.preventblindness.org/daily-living-2/artific...
Links to eye toxicity, macular degeneration, and blindness are not the only problems associated with new lighting either, which tends to be very heavy in the blue components. Lots of research links usage of blue-heavy white lighting to damaging circadian rhythms, which can lead to significant health effects. https://www.sciencedaily.com/releases/2011/09/110912092554.h...
This year the AMA issued a public safety warning regarding LED street lights because of the association with circardian rhythm disruption and related health effects. http://www.cnn.com/2016/06/21/health/led-streetlights-ama/in...
Paul Jaminet has stated that circadian rhythm disruption has been more strongly linked to cancer than any food study, ever.
I use the GE Align PM LED bulbs, available on Amazon, which cut out most of the blue frequencies and largely address both sets of problems. Highly recommended. https://www.amazon.com/GE-Lighting-93842-350-Lumen-Dimmable/...
EDITED to correct summary of AMA announcement.