Dosage, Time & Time of Day for Red Light Therapy | Dr Glen Jeffery Interview Clips

[@ModernHealthspan]

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[@post.newness]

For the past two months, I've been using a red light therapy device from Future Form Official. In my late 50s, I started it to enhance brain health and cognitive clarity. I use it for 20 minutes daily on my face, neck, and chest. Amazingly, my chronic brain fog has nearly vanished, allowing me to think clearly and sleep better. My skin also appears more radiant and youthful. Even at my age, I've always gotten compliments on my skin, and this therapy has only improved it further. The experience is relaxing, and I highly recommend red light therapy for its wide-ranging benefits.

[@angelabiggins5105]

What device did you buy?

[@post.newness]

@@angelabiggins5105 I bought the Future Form 500 panel.

[@djimiwreybigsby5263]

​@@angelabiggins5105 I'm anxious for a reply to your question

[@danidaydreaming919]

I LOVE my MITO Red Light pad!

[@ivanbeacon5883]

Please can you recommend which wavelengths are good for a)eye health, b) blood pressure & c) muscle repair

[@robertmorgan000]

There isnt enough research to answer this quesrion as you might like it to be answered. Nobody knows for certain. In some respects, it doesnt matter. If you expose yourself to morning sunlight (when wavelengths are longer/more infraed) ...its free and you get all the IR you need. Listen to Glen Jeffrey... in other podcasts... 3mins / 15 mins is enough to do the job. No need for expensive IR masks making extraordinary claims

[@islandgirlruby2750]

Been using the red light therapy for 2 weeks and I have been many compliments on my skin texture and tone and I lost 5lbs. My coworker was like “What have you been doing, I can see your jawline?”

[@zzc8505]

what device are you using?

[@HassanMaqsood-w3o]

Red light therapy gave me huuuuuuge relief from neurological long covid. I'm a believer 😌

[@ModernHealthspan]

Hi Hassan, thanks for sharing. It is great to hear about the therapies working.

[@oldflute]

Question for Dr. Jeffery. The immediate goal is to reduce ROS load in the mitochondria, making them more efficient in producing ATP. You seem to have shown well that a short exposure to "red light" (does that include infrared?) is sufficient. A long term goal might be to replace mitochondria that are too damaged to repair with new mitochondria, or increase mitochondrial density. What studies have been done in mammals to estimate the amount of red/infrared light will produce an increase in mitochondrial density in a tissue?

[@ronm6585]

Thanks Richard.

[@ModernHealthspan]

Hey Ron, thanks!

[@wdc1040]

Thanks. Very interesting interview. I have a large infrared box that I use often. But I don't feel the lights warming effect until about 5 minutes.

[@ModernHealthspan]

Hi thanks for sharing. I am trying a red/infrared light now as well and it does seem to take some time before I feel the warmth. Not sure why as you would think IR would be quite quick.

[@perpetuostudens8819]

@@ModernHealthspan My understanding is that if it feels warm then the wavelength is most likely in the infra red i.e it is not visible light. Dr. Jeffrey has been largely using visible red light with a wavelength of c. 670nm for upregulating mithochondrial function. Wavelengths above about 950 nm (IR) are more strongly absorbed by water. However I believe mithochondria does absorb light in the near infra red also.

[@AnnaH2.0]

how many nm of red light is optimal? Bc i heard/read that certain wavelengths acrually inhibit mitochondrial respiration? Thank you =}

[@J0EJ0H]

Thank you! 🙏🏻

[@ModernHealthspan]

Thank you!

[@susanoconnor701]

What frequencies are you suggesting? One of my devices has red and also NIR. So 600’s range and 800’s range. And, is it 3 min per eye or 3 min total?

[@ModernHealthspan]

Hi Susan, thanks for the question. Looking at Dr Jeffery's paper (pubmed.ncbi.nlm.nih.gov/32252424/) he used 670 nm (in the details it says 650 to 700 nm) for 2 minutes. They only did it in one eye because the other was control. Which would imply it is 2 mins per eye. Just a thought but it is worth thinking about the power. He said that they were able to see the effect with 5mW (as I recall) though the paper mentions 40mW/cm2. Many commercial red light devices may be too powerful to look at unless you can lower the output.

[@mballer]

What wavelength red light is used for video monitors and phones? What wavelength red light would be best for mitochondrial health?

[@ModernHealthspan]

Hi thanks for your question. IR remotes (according to the internet) use 940 nm. We discussed the wavelengths that would be best for mitochondria in the main video. In summary Dr Jeffery said 650 to 900 were best. Within that range there may be spots which are more effective but he was not looking for them because the wavelengths worked quite well and it was not a good investment of effort to find the optimal one within the range. The upper limit of the wavelength, 900 nm, was set by the tendency of longer wavelengths to be absorbed by water.

[@mballer]

@@ModernHealthspan I was just wondering what could be done to screens to make them healthier too look at. I was also thinking about blue light from the screens and which wavelength would be less damaging, I wonder if manufacturers give it any thought. I wonder if some manufacturers make healthier screens than others.

[@Dreamopticsredlightglasses]

@@mballer on many computer's settings there is the option under 'display' to change the settings to night light which reduces the blue light , you can set it to turn it on any time you want also there is some software called 'Iris' (google it) which will allow you to do this (it is initially free however then is paid) which apparently works very well according to one scientist I watched on youtube who seemed to be an expert scientist

[@rhyothemisprinceps1617]

Does anyone know if there is a difference in the effects of exercising indoors vs. outdoors (for either aerobic or resistance training)? Since some of the the benefits of exercise are mediated by ROS (hormesis), would exercising indoors actually be more effective than outdoors?

[@neha1299]

This is so wholesome....! Thank you for sharing all the observations and this discussion.

[@tgaudlol]

I dont understand something. When you say that doing an hour lose effectiveness, does it means it has no more effectiveness than 3minutes? Or that it has 0 effects, so less effect than 3minutes?

[@ModernHealthspan]

Hi Thanks for the question. That is a good point and I should have questioned Dr Jeffery on it. I am not clear what his meaning was or what data is was based on.

[@gg-sn5uz]

I think we all would appreciate clarification on this point. Is it possible to update the information with the doctor

[@petervandijk7533]

My hunch is Jeffery meant that there is no additional benefit in going much longer than say 5 or 10 minutes. For example, he stated 3 minutes for the eyes is actually already overkill.

[@penmaenmawrdefiant1146]

He says clearly that only a minute to 75 seconds is necessary. Prolonged exposure will have no additional benefit and may reverse the process so that no benefits are gained. His advice is simple do it for 3 minutes a day. Personally, I would take the weekend off and do it on weekdays only.

[@GaiasFleas]

So if you're in the sun every day, all morning let's say, there is no effect on health? I find this a bit half-baked.

[@pascallongpre7797]

I'm also a bit confused. Can we just say that shining red light to our face or other rather small region of our body for 2 mins will enable the mitochondria "switch" for 5 days across the whole body since they communicate? Is it still useful to use a large red light panel on a daily basis or that is just way overkill considering what the Dr. said?

[@penmaenmawrdefiant1146]

This is the exact conclusion you should make. Large red light panels aren't needed.

[@ajitsawhney]

@@penmaenmawrdefiant1146

[@islandgirlruby2750]

I was skeptical when I started using red light therapy. Man oh man let me tell you, I am getting so many compliments. I went to my aesthetician, who I’ve been going to for over 10 years and she remarked “Your skin look great, what have you been doing?”

[@kirkhere2711]

I've watched many videos, and I'm wondering how I can use my small red light panel to treat my eyes at home. Do I have my eyes opened or closed? So many videos by doctors say red light panels should never be exposed to the eyes without protective goggles. My panel is 45w, 660nm/850nm, and 55mw/cm2 at a distance of approximately 6 inches. Can I use this on my eyes? How?

[@ModernHealthspan]

Hi Bobby, thanks for the question. I cannot offer advice but a comment. I think the issue is the power. Dr Jeffery talked about 5mW/cm2. You panel is producing 55mW/cm2 (which is probably what is required for other forms of therapy.) The device I have let's me set the % of full power and at 1% it seems OK to look into. (But again that is just my experience)

[@LyingEyes-t3m]

Maybe we can think of it as the protein , once you get enough to trigger anabolic response, It can’t be on more. It’s on

[@Dreamopticsredlightglasses]

Great clip, thank you so much 👍

[@suebsc]

Dr. Jeffery said to use long wave length LED's. They are safe. I'm wondering what is a long wave length LED and also is red LED at 660nm and infrared LED at 850nm safe?

[@ModernHealthspan]

Hi Sue, thanks for the question. I cannot comment on safety per se, but in the published studies Dr Jeffery used 670 nm (in the details it said 650 to 700nm). If using light into the eye, power is an important factor. He mentioned 5mW/cm2.

[@suebsc]

@@ModernHealthspan my question is more about it coming from LED? Any idea where I could find that info?

[@surfreadjumpsleep]

missed the earlier videos. can we get RLT from normal sunlight?

[@ModernHealthspan]

Hi thanks for the question. That is a good point. At the end of the interview I asked Dr Jeffery what we can do now, and one of his suggestions was to get out in the sun (though watch out for the UVB of course!). Sunlight has a broad spectrum of light so I am not sure it will produce the same effect as a device producing red light specifically. It was not something that we directly discussed. I am not aware of any studies which have measured mitochondrial activation after being in the sun in the way they tested red light.

[@surfreadjumpsleep]

@@ModernHealthspan the Medcram guys have been talking about ifrared light & it's benefit to mitochondrial health. the doctor there also said that during covid he would move his worst patients outside & he seemed to think there was a benefit.

[@lawnmower11]

Yes indeed find Dr Alexis Cowan interview with Gabrielle Lyon

[@penmaenmawrdefiant1146]

the best time of day to get maximum benefit from sunlight is "first light" when the atmosphere absorbs UV light but allows red light through. (the first 1 to 1 and half hours of sunlight) If you have a wooded area behind you, leaves will reflect red light back at you.

[@paulhughes1885]

Does infrared light from a fire count?

[@edtrousdale5221]

Definitely No. infrared light is a very specific wavelength frequency. Look it up !

[@StarOnTheWater]

It's plausible. Sitting around a fire with a group is one of the most primal human experiences and most people describe it as extremely calming and positive. but I don't think there's much research because it is hard to reproduce.

[@susanoconnor701]

Dr Jeffery says it likely is very healing as it has the proper balance of red and blue. I add…probably candle light too.

[@moralizade]

I would also like to know about "pulse" Red Light Therapy. Does it really make any diffrence?

[@ModernHealthspan]

Hi thanks for the question. I need to find someone who is more focused on the "usual" uses for red light! But Dr Paul Chazot did say that it mattered, but when he provided the details of his protocol, that metric was not included, so unfortunately I don't have a good answer for you, yet.

[@milanmacik6094]

pulsing is for usage when you have high power that can introduce overheating the area. so pulsing is like having it on and off rapidly. secondly pulsing at specific rate in HZ is believed to further stimulate some aspects of the different states of the brain - delta, beta waves etc.

[@pamkoakes]

Should you look at the red light for eye benefits? Eyes shut?

[@ModernHealthspan]

Hi Pam, thanks for the question. Dr Jeffery has certainly used red light for the eyes, for macular degeneration in particular. And in this case he uses a red light source into the eye with the eye open. As he discussed in this clip he found that quite a low power (5mwatts) was effective.

[@wetguavass]

@@ModernHealthspan So why does he wear glasses?

[@Dreamopticsredlightglasses]

there are some new glasses which had the input of Professor Jeffery in their development where you can have eyes open or closed see my pathway

[@renesonse5794]

@@Dreamopticsredlightglasses EYEPower is the company who makes them.

[@Thomas-wz2nu]

There didn’t seem to be any reference to optimal time

[@fraumahler5934]

Seems to be one and a half minutes.

[@JoshSpace]

Any suggestions on distance from treatment area? Some have said the light source needs to be almost touching the skin surface.

[@Constantinesis]

This really depeonds on the light intensity and thus the power of the LEDs. For the more expensive and powerfull devices you dont need to be touching it.

[@garypowell9006]

Does almost any wavelength of red light work?

[@ModernHealthspan]

Hi Gary, thanks for the comment. There is more detail in the complete interview (kzbin.info/www/bejne/aH7dfJ2Pn6p4Z8k) but in summary (from memory) The exact frequency is not that important. Dr Jeffery did not like IR beyond 1000 nm because it gets absorbed by water (though Dr Paul Chazot is using IR in that wavelength). Though the power at the frequency may matter. But as in all things the study shows the benefit at the frequency used. It makes sense that similar frequencies will have a similar effect but without testing we don't know!

[@garypowell9006]

Thank you

[@montyriviera795]

When you charge a Tesla or a mobile phone, you plug the cord into a charging port. Is the human eye that charging port?

[@TuedaysChild72]

Was insulin checked with the diabetic bees that had reduced glucose spike after red light therapy? Would it be safe for people with high insulin(but non-diabetic)? I have mildly high insulin, but am not diabetic(hypoglycemia at times, runs in family). But also have mitochondrial dysfunction in family, wondering if red light therapy boosts insulin or just helps insulin do it's job taking glucose into cells?

[@ModernHealthspan]

Hi thanks for the question. A couple of thoughts on this. In Dr Jeffery's paper they did not check insulin levels in the human study I found. Based on his previous work he proposed that the mechanism was that the mitochondria were more active (making more ATP and so using more glucose) - this is also what he talked about in the interview, so not raising insulin. Otherwise, both Dr Jeffery and Dr Chazot, who we also spoke with about redlight) said that they had seen no side effects with red light.

[@take5512]

does 560 reach lungs? what other organs?

[@pete49327]

Simply light your home desk or workspace or computer desk each morning with a couple 40 watt incandescent light bulbs. Better yet, get a few minutes of direct early morning sunlight as often as possible. You just want the direct sun's rays coming in at a slight angle, mostly from the side.

[@ModernHealthspan]

Hi Pete, thanks. It is certainly helpful to get some redlight and natural sources are best. I don't think that it is clear that this would provide all the benefits of more focused light at specific wavelengths.

[@pete49327]

@@ModernHealthspan Thank you for reply. I should have phrased my comment better. I was thinking more in generalities, i.e. replacing unhealthy LEDs with incandescents, and thus getting some near infrared early morning light. But yes, the red light deivce Dr. Jeffery has invented or produced is certainly intriguing and something I might like at my age of 75. I will investigate further. Cheers from L.A. (lower Alabama:)

[@netsurfer3655]

What about the globes? Should they be incandescent? LED? OLED? Infra? which?

[@ModernHealthspan]

Hi thanks for your question, though I am not sure that I understand it completely. The important thing is the spectrum of light that comes from the device. The source matters only in which wavelengths it emits. Most of the red light devices I have seen are LED based and emit light in the 650 or 850 range (red and infrared respectively). If you are not looking at a specific redlight device, but at light sources in general; standard LED and fluorescent lights produce a lot of blue light and little red. Incandescent bulbs are much better in this respect with a wider spectrum which includes red.

[@stevemarshall_uk]

So 2 minute daily of 650-850 range, but what area coverage ? distance from area ?

[@tgaudlol]

I have a whole redlight panel. Do you think it is adequate to do 10mn, each side, daily?

[@ModernHealthspan]

Hi thanks for your question. Based on what Dr Jeffery said, that would be sufficient, at least to achieve the mitochondrial activation that he is investigating.

[@penmaenmawrdefiant1146]

@@ModernHealthspan you misunderstand. A switching-on process allows a small part of the body to be treated, which will switch on the effect throughout the body.

[@kimcostello127]

Thank you for this it’s completely fascinating. So can you use the retina to treat the whole body? Thank you

[@ModernHealthspan]

Hi Kim, thanks for the question and just my thoughts. Dr Jeffery's studies on the systemic effect were when the light was used on the back. I don't know that he looked at the systemic effect on the light into the eye. So difficult to say (though the retina is full of mitochondria and has blood flow so it would make sense that the same mechanism applies.)

[@kimcostello127]

⁠Thank you, I suffer from CFS/M.E. and want to understand how to treat myself with red light

[@1960taylor]

Just answer the question

[@Constantinesis]

Why does Dr Glen advices for a 3 minute exposure while every commercial red light device instructs for 15-20, even 30 minutes per exposed area? Is it because of the differrrence between medical grade devices and commercial ones?

[@ModernHealthspan]

Hi Constantin, thanks for the question. I don't think so, though I don't know the answer. I did ask Dr Jeffery as to whether the same protocol would be appropriate for muscle and he said yes. We spoke to Dr Paul Chazot on Alzehimer's and his was 6 minutes and he did stress that power was important (23.1 mw/cm2).

[@davenockels5028]

I think it is because, in this short edit, he is talking about exposing the eyes, not the body in general. The eye has more mitochondria than any other cell. Most suppliers advise against exposing eyes to their BIG panels all together. (They are playing safe and made those recommendations ahead of Dr Jeffery’s paper)

[@jennifermoulton9289]

Warning…don’t buy Kala red light therapy. No support and /or communication from company. I may be scammed, not happy with product and can’t talk to them about it…won’t answer and would post review.