blue light associated with prostate and breast cancer

this has nothing to do with CRI
you can get red in 660 and 730nm, plus green 520nm and
Amber 595nm all from kaidomain.

and people, please dont reply to the Blue Light Deniers, they are just hijacking the discussion to talk about splenda… dont take the bait.

These 595nm are phosphor converted or native amber emitters as I need?

they look native to me,
you should contact the seller directly with your questions

Do read the nurses study links, that was quite well done research.

OK, cool. Thanks for letting me know.

Hi everyone, thanks for the efforts made thus far to avoid controversies and arguments in this thread. But it does feel like it’s going to start getting ugly. Please try to avoid the more controversial aspects of this topic, and don’t dig in your heels if somebody expresses a different viewpoint. Thanks in advance!

No word from me about the direct correlation of blue light = disease.
Otherwise we shouldn’t even expose or watch sunlight :wink:
But I have personal experience that cool/white lights can affect the sleep cycle more. And that it’s important for regenerate organism and endocrine system.
Remember when in my street replaced HPS bulb for white Leds.
Plus the introduction of cool white headlights on cars/bikes in the opposite lane, how much longer it took me to fall sleep than before. Same sensation of ‘’wake up’’ when I watched from afar 5000k Metal Halide instead the almost irrelevant Orange HPS Bulb at similar power.
And not good also watch TV,Phone etc… before sleep,maybe I’m sensitive.

Yes, I too think it’s about artificial light at night and breaking the natural cycle. Pure luck there are wavelengths not influencing release of melatonin.

What I don’t understand: Green is supposed to supress melatonin, right? When we watch yellow light, both red and green receptors are stimulated (else we wouldn’t see yellow), so the effect has nothing to do with receptors, or am I wrong somewhere?

Oh LoL true,like traffic lights.
The Red made relax then Green wake up to restart you on car.
Anyway can’ t reply to your question sorry!

melatonin friendly colors, happen to be the colors of fire :slight_smile:

so are you asking if Yellow light suppresses melatonin? I think yes.

I’ve read it doesn’t but I wouldn’t wonder if I mixed something up again.

That’s why there is boom of melatonin integrator sale

The people you working with were most likely so tired they probably near the verge of falling asleep on shift. As others have mentioned, if you’re so tired, you can easily fall asleep in the middle of the day.

Here’s more evidence from U.C. Davis

“Continued exposure to blue light over time could damage retinal cells and cause vision problems such as age-related macular degeneration. It can also contribute to cataracts, eye cancer and growths on the clear covering over the white part of the eye…Exposure to blue light before bedtime also can disrupt sleep patterns because it affects when our bodies create melatonin.”

And more from U.C. San Francisco. This is the research the dailymail used, so it isn’t the daily mail saying this. Although their reporting may be a bit sloppy; the meat of the issue and research is still there.

“Smartphone use directly correlates with sleep, with greater use demonstrating a significant association with shorter sleep duration and worse sleep efficiency, according to researchers at UC San Francisco…This was the first study to examine such use in a broad population, directly measuring screen time rather than relying on self-reported use. And, those with more screen time use had poorer sleep…”

Galaxy Note 9,has a filter to minimize blue light.

I already got amber xp-e Led (not from KD) ~1$.
Placed by myself on single mode sk68.
Be aware the real color to my eyes look more washed
and less saturated than photo.
Don’t like,I would try another more deep Orange native if it exists.


Let’s be honest; are we REALLY willing to give all CW emitters? And what if it turns out that ALL artificial light has the same effect? What constitutes non-“blue” light? How WARM does it need to be?

If the reason for using Amber emitter is to avoid blue light, an E21A 2000K 90CRI would be a good option. It emits minuscule blue wavelength but you still get to see everything in glorious hi fidelity color. It’s a much more practical choice for daily use.

great info!

I think brightness also plays a role. Low lumens means less of whatever percent of blue light might be coming out of an LED.

it would help to have data on the percent of blue light in various LED options at each step in CCT
iow 4000k probably has more blue light percentage than 3000k…

another factor in blue light reception, is the brightness at which the light is used

even a cool white LED, used at sublumen levels, moreso at scotopic levels (below 0.01 lumens, when we cant see colors), would be producing blue light in very low quantities…

makes me wonder if below a certain lumen level, even cool white can be used without degrading Rhodopsin…, and also without degrading Melatonin?

blue light factors to quantify
intensity (more lumens means more blue light)
spectrum (higher Color Temperature means more blue light)

reactions to monitor
Rhodopsin (more blue light means less of that hormone)
Melatonin (more blue light means less of that hormone)

.

What benefits make some people want Amber?
We know Red is better at preserving Rhodopsin and Melatonin.

Cant speak on the sleeping habit’s of co-workers but I get a solid 7-8 hours of sleep on the daily.

Keywords “could” and “can”. I mean there is extensive data and studies connecting the relationship between radiation and cancer is well documented, exposure to radioactivity/radioactive materials increases your chance of developing cancer. Bananas contain potassium-40 which is a radioactive isotope, which technically makes them radioactive…… Brazil nuts are technically in a sense a “super food” and have many health benefits yet contains selenium and radium isotopes which can lead to symptoms much like radiation poisoning….

Still the “Focus” of the study in it of itself is flawed in my opinion…. based on just the RAW total time in front of a “phone” is only about an hour a day~ given if their numbers are accurate, that is far FAR less than the average exposure to “blue light” in front of a TV or monitor for 5-10 times the amount of time daily with a phone due to job obligations OR leisure time…. you can’t really be pushing the narrative that around an hour of phone use daily/3.7 minutes per hour during the day would have affects far exceeding 5-10 hours “blue light exposure from a TV/monitor….

Sure, I know E21A at 2000k are miles better but are hard to find,maybe demand is too low(bad).I would see them on my street Lights…