Red light (670 nm) can reduce blood glucose levels, says study

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Bring on the red light donut café’s.

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I have a 660nm headlight, I wonder if that counts too? I can reverse mount it on my head so the red light shines into my forehead. A nice way to geek out and have some positive medical effects too!

EDIT: tried it, the goddam SST20-DR was too strong, I felt burning on my forehead immediately LOL! I have to run it at low mode to feel comfortable wearing it for any length of time.

I use red light for sore muscles for 15-30 minutes at a time.

Helps reduce pain and speed recovery.

I put my Emisar D2 at step 3 of 7 in advanced mode (same as step 3 of 5 in simple mode), directly against my bare skin.

That is 22 lumens on the 519a and 11 lumens on the red 660nm.

Zero heat.

No joke, this could lead to the possibility that High CRI emitters - which have more red in spectrum - are healthier than standard CRI 80 ones (like most of the 2835/COB used in domestic lighting).

This effect is certainly not very pronounced (the light is not shining into the body but only lights up our skin), but we often end up sitting for hours under artificial light with a relatively low red component.

agree
I avoid Low CRI completely, whenever I have a choice, including all the flashlight LEDs with negative R9 (Red).

I cant avoid some of the public sources, like LED converted street lighting.

In my house I use either Incandescent or High CRI photo grade, flicker free bulbs. I buy from here.

the LED bulb I spend the majority of time under is this 3000K

That is also why I switched all my interior lighting to 90 CRI. Couldn’t stand the pale skin tone.

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