Light exposure in evening, night & morning affected circadian phase of #melatonin levels. In addition, even longest wavelengths (631 nm, red) & intermittent light exposures induced circadian resetting responses & exposure to...
low light levels (5-10 lux) at night when sleeping with eyes closed induced a circadian response. ncbi.nlm.nih.gov/pubmed/30311830
These results show that positive mood mean difference of PANAS between no light and red light is significant with p=0.001. Tension, depression, fatigue, confusion and vigor from BRUMS are not significantly changed while we can observe the significant change in...
anger mood. Finally, we can also report that the blue light of LED-backlit computer screen significantly suppress #melatonin production (91%) more than red light (78%) and no light (44%).
High intensity red light was as effective as white light (780 microW/cm2) in suppressing NAT activity & pineal & circulating melatonin. Red-light-inhibited nighttime NAT activity & suppressed nocturnal melatonin levels in retinally degenerate & normal rats ncbi.nlm.nih.gov/pubmed/8586959
high intensity 600nm orange light suppresses melatonin
These results show that positive mood mean difference of PANAS between no light and red light is significant with p=0.001. Tension, depression, fatigue, confusion and vigor from BRUMS are not significantly changed while we can observe the significant change in...
anger mood. Finally, we can also report that the blue light of LED-backlit computer screen significantly suppress melatonin production (91%) more than red light (78%) and no light (44%).
3 lux is not a lot of light but those in study below who regularly had night light greater than 3 lux were obviously fatter, having a higher body weight and BMI than those who used less light.
ratio (OR) for obesity was significantly higher in the group exposed to an average light intensity ≥ 3 lux than in the group exposed to an average light intensity < 3 lux. Furthermore, individuals exposed to an average light intensity ≥ 3 lux were significantly higher body...
weight and BMI than those exposed to an average light intensity < 3 lux. A significant association was observed between bedroom light exposure at night and obesity in patients with bipolar disorder.”
And for you skinny people, just because you’re not fat and keep the...
#BlueLight from screens is more damaging to kids than adults because the lens of their eye hasnt fully developed & cant block high energy light as well. Full lens development doesnt happen until...
you reach your 20's. Giving little kids Ipads and video games is basically child abuse.
You might not be aware of it, well now you are, but as this study shows when you give your 5 year old an ipad, you are limiting the development of white matter in their brain which....
basically makes them dumber because white matter contains the cables in your brain that makes it possible for you to learn and develop cognitive skills etc. It also makes your kid's behavior worse.
This is in addition to wrecking their #circadianrhythm, lowering their...
UV power level at sunrise in Northern hemisphere summer = Zero.
You usually find UV light doesn’t emerge until about 20 minutes after sunrise (this depends where you are in the world). Even at that time it is very weak UVA registering a...
00.1 on the meter.
I suspect there is UV at sunrise just not detectable by a meter but, there definitely is UV light out in early morning hours shortly after sunrise. You are not UV free until 930am or whatever some meme shows.
So get out there early for the uv free red and...
& blue light heavy sunrise which, among many other things, starts production/release of hormones and preps your skin to safely withstand stronger sun later in the day.
Hang around for just a little longer until that tiny bit of purple light (uv) emerges to combine with...
There are many reasons but as you see in the pics below, UV light power vanishes and we see a #bluelight SPIKE in the sun's spectral output. Color temperature also spikes at this time too.
The vanishing of UV light along with the...
increase in blue light along with a color temperature spike triggers photoreceptor cells in your skin and eyes (cornea and retina) called melanopsin and neuropsin. Neuropsin is a UVA photoreceptor. It senses the diminishing UV light and alerts your body clocks that night is...
coming. Melanopsin pays attention to this brightening/dimming of light especially light in the blue light range (480nm peak). As this kind of light at sunset bursts and then dims quickly after sunset, melanopsin sends a signal through your main body clock called the...
normal cell with good mitochondria #health shown by the red dots.
In the center we see what happens to the cell's mitochondria when #bluelight shines down on it. The blue light destroys the red dots. Mitochondrial mass murder.
On the right we see what happens when...
near infrared light (NIR) comes to your mitochondria's rescue and is added to the blue light shining on your mitochondria as it does in natural sunlight but does not in artificial light. Your mitochondria remain significantly more intact and healthy.