Red light therapy, incandescent or LEDs for health

Off-topic Chatter
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I am a big fan of Ray Peat at www.raypeat.com and his recommendations on diet and health. After converting all my lights to LED, I am going back to using some incandescent lights. I've read about how we lack vltamin D (a leading cause of serious symptoms of coronavirus) and how we can can get it from red light in incandescent lights. You can just take it in dietary form as well but just for context 10 minutes in the sun generates 10,000IU of vitamin D. It also inproves skin quality, reduction in pain and inflammation as well as faster healing. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3926176/ this site has a lot more info http://valtsus.blogspot.com/2017/05/the-therapeutic-effects-of-red-and-near.html but it is mostly dealing with LEDs and lasers, which is why I am posting it here, I thought flashlight experts might be interested in it! I remember liking the old bulbs and enjoying their light the most, then CFLs were cheaper to run and better for the environment but looked really ugly and gave me a headache (and I didn't know why, it was probably because they were cool blue and the spectrum made me sick), and now I switch to LEDs, but in the search for efficiency, other benefits are lost from the perfect black body. If there is any technology that is developing to make a better home light with good wavelengths in red, NIR, orange like https://redlightman.com/product/red-light-device-mini/ or some suggestions for a DIY, please let me know! I remember reading here nichia had lights that did not emmit any blue or UV light for museums, but I don't think it had very high lumens, would that be useful in this case?

I am interested in what everyone thinks of lights for our health. It would be really cool to have a light as a mule or a triple for health reasons, another reason to have/build another flashlight haha. So far I found some old new bulbs but they are frosted and not 130v so not optimal.

I heard about him on recommendations for lights in this link https://www.youtube.com/watch?v=mMwYafVYjtU then I went to this site https://www.selftestable.com/ and this forum https://raypeatforum.com/community/threads/what-to-look-for-when-buying-incandescent-bulbs.21670/ https://raypeatforum.com/community/threads/into-the-light-incandescent-bulb-experience.2276/ https://raypeatforum.com/community/threads/what-red-light-to-get-help-appreciated.19316/page-2 to read about models to buy,. This is a UK centered link but its pretty old. https://old.reddit.com/r/raypeat/comments/4f4dnb/uk_people_sources_of_things_to_experiment_with/ in regards to incandescents. His talks are facinating and I have used a lot of his tips to help myself, such as avoiding seed oils. I can talk about that but I would love to hear about what people think about red light therapy!

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thanks for the links
I have not tried any of the expensive AC powered lights.
I use red light therapy for eyes, muscle pains, injuries, pimples, migraine…

I consider the AAA Sofirn C01R excellent for these applications.

I also built an AA light, Thrunite T10T with a 730nm XP-E2
and an AAA Maratac w 660nm XP-E2

and I tested a 620nm XP-E2 in an AAA, AA, and CR123 light. I find it “too” orange…

here are a couple of the reds I built:

the LEDs came from Mtn, here is one 660nm example, preflowed onto a 16mm mcmpcb

There are More pics and info in this thread

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Thanks Jon! Did you do any research on the types of wavelengths for effects? How are the flashlights working for the reasons you stated? The device from redlightman uses the following colors:

610nm – 25% – Orange Red

630nm – 25% – Red

670nm – 50% – Deep Red

the research from the sites talking about the benefits use LEDs on http://valtsus.blogspot.com/2017/05/the-therapeutic-effects-of-red-and-near.html talk about the use of 670nm being most studied, and 730nm not being absorbed in the 12. Photobiomodulation treatment 101 section with the 670nm being the most helpful for mitocondria function. I might have posted this in the wrong area, https://budgetlightforum.com/t/-/62550 this seems to be a similar topic that I never found in general info.

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I have seen studies that find effects for a range of different wavelengths, including green and all the various orange reds you mention, plus infrareds.

imo
Reporters mistakenly think that the specific wavelength used in a particular study, such as 670nm, is uniquely special for mitochondria of the eyes.

I dont think any single specific wavelength is required, to obtain the benefits of light therapy.

imo, if we were to use sunlight, the same way other colored lights have been used and studied, we would see similar benefits. I think our modern lifestyle deprives us of essential natural light energy, and as a result we now produce devices to supplement that defficiency.

The Red Light Device Mini you mentioned (thanks for the links) is more powerful and expensive, and is used at 80cm distance, so it can illuminate a larger surface area than the small, inexpensive flashlights I use for spot treatments.

It would be useful for me to learn how to compare the lighting power that is being applied to the skin surface, from various light therapy devices.