My office was moved to a basement level and I felt myself getting depressed. I purchased light therapy and I’m back to my normal self. Daylight is so important.
Hi Jean-Jacques, thanks. I think metal halide lamps are too bright and present other potential safety concerns (such as too much heat when used indoors). I hope this helps.
Stellar presentation, thank you. I've been considering purchasing a Verilux, but I am concerned about harmful radiation. Their advertisement on Amazon says that it does not produce "harmful UV", but as you pointed out, Verilux is not entirely upfront with relevant information. A second opinion would be appreciated!
Any new reviews of other products with improved LEDs? . Excellent review. Wondering if you would now recommend another product. The manufacturer should give you a job. Lead developer.
I've been watching a bunch of generic stuff from psychiatrists about light therapy but this was what I was looking for. The light box I purchased (prior to watching this) does have a 6500k LED so that's good. Vertical placement makes sense since the sun shines down into your eyes at an angle. I think I'll be leaving my light on for a longer time at a lower intensity. Thanks for the great info.
Sleep medicine doc here. A lot of our colleagues had no idea what on earth 10000 lux meant and just recommended it for people for insomnia. This video is great! I have a lamp myself but I was aware that I was not getting 10000 lux. I figured that was just an insane number. I also have luminette glasses which I think are pretty effective.
Really appreciate your input on this. We are working on a product that is going to make the 10,000 lux claim completely obsolete and give people more balanced, low-glare illumination that still supports circadian stimulus. If you're interested, please sign up for the newsletter at bedtimebulb.com or drop us a line at hey [at] bedtimebulb [dot] com.
@@GregYeutter Do you guys also make a therapy light product for SAD, or do you even recommend that anymore at this point? I know this video is a few years old, is it better to just get regular lightbulbs that have enhanced spectrum?
@@GregYeutter. Greg, you are awesome. I will sign up for your newsletter. > any science regarding dementia patients? You see, they are giving dementia patients anti-depressants under the guise- to help raise serotonin levels! Well, these anti-depressants are not very nice. They damage the mitochondria in the neuronal cells.
@@martinlutherkingjr.5582 It's not that the metric itself is obsolete, it's that it's the wrong metric for circadian input, so the "10,000 lux" claim should not be made. Will have more to show soon.
The level of detail in this video is truly remarkable; your approach is not that of a UA-camr, but a scientist in a lab, and you show just as much rigor.
Mr. Yeutter, Thank you for taking the time to research this and make this video. After having positive results using this light, I’ve been recommending the happy light to people in my life, but I couldn’t really explain why it works, circadian rhythm, or what a lumen is. I celebrate you, Mr. Light Nerd. My favorite quotes (Paraphrasing): “I measured this with my spectrophotometer” and “I built an Excel to figure this out.”
Timestamps: 02:18 Product Overview 02:45 Company History and "Natural Spectrum" 04:27 10,000 Lux Claim; Lux vs. Lumens Explanation 08:46 Lux vs. Distance Test; Lamp Positioning 12:03 Melanopic (M/P) Ratio & Melanopic Lux 16:22 Vertical Placement 18:25 LED Measurements; Choosing a Better LED 20:00 Flicker Test 22:49 Final Thoughts
Since you have a Spectrophotometer, it would be really cool if you could measure the Lux of the Elgato Key Light at various distances. It's an extremely popular light that claims to be offering 2800 lumens, but it doesn't say how many Lux (and at what distances) That's because it's not meant specifically for light therapy, but for video production and streaming. But it looks really bright, so I'm wondering if it can be dual purpose (used for both video production and light therapy)
The Elgato Key Light can also be mounted on the desk (so about 24 inches away from you) and angled, for optimal melanopic efficiency. So it would be really cool if a light nerd such as yourself would do some measurements on this thing. I'm thinking about getting two of them and mounting one of the right side and one of the left side of my desk.
Hi Greg. I have a urgent question. I found this item: NASLI SunSun FP 4x24W, it says its FULLSPECTRAL imitation of Sun.. Do you think this a a completely different technology than f.e. VERILUX'S, or it is totally the same thing just packed in nice words? These days it costs 200-250€. Enlighten me! Thx
Definitely! There's a huge inverse correlation between searches for light-related topics and the length of days. For example, check out the Google search trends for "light therapy": trends.google.com/trends/explore?date=all&geo=US&q=light%20therapy
I learned so much watching this video. Just the difference between lumens and lux was explained so well that it got stuck in my mind. One of the most informative videos on this topic.
I have one in my home office. I can't quantify the benefits but I love being in that type of light. Usually id look out the window and think omg its dark already. I've not been doing that.
We shouldn't use screens before bed. But since we do anyway, here are a few tricks to make them produce much less blue light: ua-cam.com/video/wK04m5BupIA/v-deo.html
Disabled veteran here. I've always had seasonal depression (actually just depression in general) & when i told my Dr she said, do you want for me to send you a light box?? I had never even heard of one. The VA sent me this huge box, 2 feet in length & 1 ft in heighth. Little larger than i expected, but it's the VA. I'm currently sitting in front of it as I sip my coffee & found this video. Extremely well done research, sir. Thank you! ❤
I can’t express how refreshing it is to have come across this video. The information here is so clear, concise and relevant. You’ve done a fantastic job at explaining this and the effort really shows. Thank you!
Thank you Greg for all that really useful info. You briefly alluded at the end to a question I have though: A surgeon told me that if you are taking vitamin D supplements (or eating oily fish, etc.) the vitamin needs to activated by light. Is there a metric for how these lights activate vitamin D which is arguably more important than mood.
Have you tried the tuo light? It flickers between specific wave lengths to simulate dawn. Supposedly they’ve tested it on patients at Berkley. I didn’t notice any difference from an alaska northern lights northstar 10,000 lux fluorescent light box just that its effects were a little weaker, probably since it was noticeably dimmer. I used 6 tuo lights at once. Had the same withdrawal effects I get with any light box that I don’t from sunlight.
But if you need a 10,000 lumens to combat SAD that is truly a 25,000 lux lamp. Also, I noticed that grow lamps emit light in the blue range of 468 nanometers. So check into that instead of buying an expensive SAD light. A grow light can also help your plants 😊
So continuing on my thread of the lumens you can actually calculate how many lux you will receive based on a square footage of an area by doing a conversion calculator. And it seems like certain corn shapep- Yes, that's what it's called-Light bulbs will help with this. However, the wattage might exceed your standard lamp of 100 w. these lamps are used in warehouses, large areas where illuminations are needed and would actually help you a lot more because with the right wattage you can install them in several light fixtures inside a room so you don't have to sit 12 in away from something or 6 in for some lux lamps. You can just walk around and do your day like normal inside your house, while receiving the SAD light benefits.
⚠ For those asking, I unfortunately can't provide product recommendations for specific SAD lamps. I am frankly disappointed by what's on the market, and we're working on something way better. To be the first to know when it launches, please sign up for the Restful/Bedtime Bulb newsletter: bedtimebulb.com/newsletter-signup ☀️ Vitamin D deficiency is common, especially in the winter months. In this follow-up video, I'll show you exactly why SAD therapy lights won't help with Vitamin D, and what you can do instead: ua-cam.com/video/MQv1N7iJCM8/v-deo.html 💡 Should Edison, Swan, or someone else get credit for inventing the light bulb? This video explores the 19th-century development of this world-changing technology: ua-cam.com/video/nfe-iQBUOjA/v-deo.html
@thecloudboundsound Any of them are probably fine. At least from the Verilux brand, they are all quite similar. Some of the higher-end models have more features, but those aren't really necessary.
So it’s been years since this video, has your opinion changed since than about SAD lamps? Is there any recommendations now? I really struggle with my insomnia for years and it triggers my ADHD even more than usual. But when we have sunny morning (England so quite rare thing) I sleep like a baby at night! It was such a shock for me how directly it impacts my sleeping so I try to find a lamp or solution to not just hope and pray the next morning ah e some sunshine 😅
The reference range for vitamin D is way too high. I was totally healthy despite my blood vitamin D levels being officially in the "deficient" range, but then I took a supplement against my better judgment and that gave me an unhealthily low platelet count.
Just discovered your channel. Very thorough and interesting. I'd love to see a review of the different SAD lamps and what your recommendation would be.
Wow, Greg... totally awesome video in every way. I was involved in one of the original studies of SAD at the University of Washington . Living here with so many months of f darkness and low hanging clouds, these really help. I was given a Dawn simulator for my participation. Your video is so informative, but done in such a way that that “everyday Jill” can understand it. Kudos to you for your service to us I will definitely be looking for all the products you inspire! Your Mum must be proud of you!😏 Looking forward to more of you!! Thanks !
Almost all of the lights on Amazon UK, even the cheapo ones, specify 10,000 lux at 10/20/30cm. I'm not sure I believe them, but at least they're trying :D Verilux themselves don't seem to sell these products in the UK, they only sell light bulbs / lamps, and they're specified in lumens
Just find a full spectrum grow light. Thats what your missing in winter. If its great for growing plants then its also what your body needs. LUX is measured light per square meter Lumen is the output of the LED I own a led business for 10+ years and thats my knowledge on it
I got one for Christmas and my mood improved after the first use. It’s magic. I have a second one now and keep them shining on me whenever I sit down somewhere.
I took vitamin D3 last winter, and was doing much better without any light. If you are in Western, PA - its usually cloudy there - and especially in the winter - even more cloudy - ALL THE TIME. Should help those cases. But I would try vitamin D3 though in any case.
I found this while trying to find a stand for my happy light to mount above me. I didn’t find one, but really enjoyed your video! But now I definitely know that I need to find a way to mount it higher.
Greg, there is a difference between vitamin D producing light and full spectrum. Please explain that vitamin D from the skin can only be produced from the sun between months April to November. This can also lead to depression is the lack of vitamin d. Please explain the difference between full spectrum circadian lights and vitamin d producing light. Do we need both?
Great video and very important topic! So you are saying one could also use studio video lights for light therapy purposes? I'm looking at a few video lights from Godox which put out around 20 000-30 000 lux or more of 96+ CRI quality 5600K daylight measured at one meter, which is much more than many of those light therapy panels out there. But does the temperature of the light also matter? Since sunrise is around 3000-4000K, shouldn't the artificial light also mimic that to be most effective in triggering the start of the melatonin production and affect the circadian rhythm?
Very clear and helpful video! I just purchased a lamp from Beurer. They are the lead in Europe I think. They actually state the distance in CM you need to be from the product to get 10.000 lux etc.
This is such an informative video. As a science and facts and data geek, I needed this, thank you Greg! I have recently moved to a location by the Arctic circle and I have been considering getting one of these SAD lights, as we will soon go into total darkness out here. I have been doing lots of research and reading up on these lamps and honestly haven’t been totally convinced… This video has been by far the most comprehensive source of information. Personally, I have been looking at Beurer, which has been celebrated for its German engineering and also as it has been certified/approved as medical equipment. Would love to get you test one of their products. However after watching this video, I think that even my Newer stand lamp might be a good source of light for the circadian rhythm. Thank you so much for making this video!
I really like the studio light idea. Do you have any recommendations for one to achieve the desired stimulation? Perhaps something wall mountable. Cheers - great video!
Great video. I didn't expect to watch all l the way through. Does anyone know if Verilux is still using the "cheap" led or if they are using a better quality led to fill in the cyan gap?
From someone that knows absolutely nothing about any of this, but bought one of these light sources, this video BY FAR gave me knowledge that I absolutely appreciate. By giving just the facts and in a way that the common person can comprehend and understand is greatly appreciated. Thank you for the info! I will likely NEVER need this info, but just understanding what's going on is exactly what I needed. Awesome video.
As someone who intuitively knows that more is not always better (applies to everything) and a very bright light could possibly be a trigger for epilepsy and other adverse health effects, I immediately started looking for reviews like yours. Thank you very much.
Hi Greg, I'm just 1/3 of the way through your video and having to pause to go do stuff. I know its 3 years since uploading but I was just wondering if you could recommend me a genuine and effective SAD light, as I've been diagnosed with SAD and as its getting into shorter days here in the UK id really appreciate it. I have no budget limit, just would like a solution to this shit, its dark and gloomy too much here right now lol. Also is there a difference in wake up lights vs SAD lights? Sorry for the questions but its all new to me and so I'm beginning research, but you're clearly extremely knowledgeable so I'd appreciate any help 😊 P.s. I don't struggle with getting to sleep/staying asleep (I sleep too much if anything)
I vaguely remember hearing that at least sunlight being received by not just the eyes, but all the rest of the body also moves the process of the circadian rhythm along (unscientific wording, but I'm trying to get the point across)... So I'm wondering if and how beneficial it can be to hold it at 6 inches, but not toward the face and eyes, but toward bare skin
There is research being done in this area, but we're in the early days. Longer wavelength (think red and infrared) light is going to be able to penetrate the skin further than blue/green/violet/ultraviolet, so personally I would stick with the SAD light as intended, but some sunshine here and there wouldn't hurt.
@@GregYeutterTheres a UA-cam vid where a woman says that her led face mask helped her depression, as a side-effect. I'm tempted to buy one, but am worried about the effect of the red infrared and far infrared light effects on eyesight.(Perhaps closing the eyes would be enough to reduce this , but will it be as effective.) Do u have any thoughts on this ? Thanks for greatly informative vid.
This is actually the first time I've heard of melanopic light. Very informative. I only had time to skim around the video; what I'm looking to get is something that will stimulate Vitamin D absorption. Is UV needed for that? Or can a HappyLight or other Verilux product help with that? Would love to get your knowledge on that subject.
Would you have the time to review this particular S.A.D. lamp? Carex Day-Light Classic Plus Bright Light Therapy Lamp - 10,000 LUX At 12 Inches - LED Sun Lamp Mood Light and Sunlight Lamp Thank you.
If you have SAD, the worst thing for you isn't antidepressant because it will just make you sleepier and sleepier To the point where you can't get out of bed at all and sleep 10 hours a day. So if you feel you have sad that would go with it like therapy first because antidepressants and anti-anxiety medication will compound the problem.
Thank you for this video, it helped a lot. I'll put it on a monitor arm to aim it from above. My psychiatrist recommended one for my treatment-resistant depression and I was worried I would get an ineffective one. At this point, I would be willing to put it directly onto my eyeball if it could help.
Because the SAD has a very 'early peak' in the spectrum regarding blue light or UV-light. Is there a chance that a SAD light is harmful for the eyes, and how can one find out? I just bought one this week, but I'm a bit weary of the type of light. Thank you for the very informative video btw!
Can one use a full spectrum 100 watt light bulb on a pole lamp, which will be slightly higher than my head. Or are these bulbs not the same as these LED’s for SAD.
Just curious, you've done the tests on the HappyLight, can you provide us with the same info you had trouble getting from Verilux? That is, with the studio setup: what distance is optimal, what light settings (Kelvins, lumens, etc)? I guess it won't be the same between different gear, but it would be nice to understand how to actually use products you linked, especially since the use is experimental, I doubt there will be many resources?
The main problem I have with most of therapy lights is they look like they give off foggy/muggy day sunlight which the opposite of the sunlight I need. The sunlight i like is bright sunny days, these are really bright and white instead of yellow and warm.
This was a truly informative and interesting video. I was engaged the entire time and learnt a lot. Really appreciate your in depth analysis of the product.
I have never seen anyone talk about lights with so much passion and calmness at the same time!!!
Thank you!
My office was moved to a basement level and I felt myself getting depressed. I purchased light therapy and I’m back to my normal self. Daylight is so important.
Finally someone who knows what they're talking about and doesn't only want to sell stuff, their souls included 🙌
It's very hard to trust people in a capootalist environment. No wonder "s.a.d" is a thing
I wish everyone would review products the way you did here! Great job sir
I think the same in min 18, thanks for take your time and analyse this product is usfull and you did a great job.
Thank you so much!
Very informative. Many thanks Greg.
Glad I could help!
Very informative, thank you. Do you know if TL is better than led for your health? I'm worried about radiation..
Hi greg, interesting video ! Do you think using some metal-halide lamp is also a good idea ?
Hi Jean-Jacques, thanks. I think metal halide lamps are too bright and present other potential safety concerns (such as too much heat when used indoors). I hope this helps.
what about the light goggles: Lucimed - Luminette
Vůbec vám nerozumím.... dá se přeložit do češtiny?
Stellar presentation, thank you.
I've been considering purchasing a Verilux, but I am concerned about harmful radiation. Their advertisement on Amazon says that it does not produce "harmful UV", but as you pointed out, Verilux is not entirely upfront with relevant information. A second opinion would be appreciated!
If it's LED, it should not produce any UV.
@@GregYeutter If it's a LED lamp, can it still replace daylight?
@@elsandstorm8997 Daylight is always the best. But a SAD lamp, even a DIY one, is the next best thing.
Any new reviews of other products with improved LEDs? . Excellent review. Wondering if you would now recommend another product. The manufacturer should give you a job. Lead developer.
This is excellent work...keep it up
Thank you! You might also be interested on my new video about blue light and screens: ua-cam.com/video/wK04m5BupIA/v-deo.html
Stumbled upon this and it's probably the most informative UA-cam video I've seen in the last 6 months. Really well done
Thank you!
I can't agree more. Thank you Greg Yeutter.
You are full of sh*t!
@@alisonc5746 why lie?
Liar
This guy has such a charming and soothing personality to me, I ended up watching the whole thing 😍😂
Very informative video! Thanks!
you must be gay enjoying a guys voice
I've been watching a bunch of generic stuff from psychiatrists about light therapy but this was what I was looking for. The light box I purchased (prior to watching this) does have a 6500k LED so that's good. Vertical placement makes sense since the sun shines down into your eyes at an angle. I think I'll be leaving my light on for a longer time at a lower intensity. Thanks for the great info.
Sleep medicine doc here. A lot of our colleagues had no idea what on earth 10000 lux meant and just recommended it for people for insomnia. This video is great! I have a lamp myself but I was aware that I was not getting 10000 lux. I figured that was just an insane number. I also have luminette glasses which I think are pretty effective.
Really appreciate your input on this. We are working on a product that is going to make the 10,000 lux claim completely obsolete and give people more balanced, low-glare illumination that still supports circadian stimulus. If you're interested, please sign up for the newsletter at bedtimebulb.com or drop us a line at hey [at] bedtimebulb [dot] com.
@@GregYeutter Do you guys also make a therapy light product for SAD, or do you even recommend that anymore at this point? I know this video is a few years old, is it better to just get regular lightbulbs that have enhanced spectrum?
@@GregYeutter. Greg, you are awesome. I will sign up for your newsletter.
> any science regarding dementia patients?
You see, they are giving dementia patients anti-depressants under the guise- to help raise serotonin levels!
Well, these anti-depressants are not very nice. They damage the mitochondria in the neuronal cells.
@@GregYeutterHow is a product going to make a unit for measuring light intensity obsolete?
@@martinlutherkingjr.5582 It's not that the metric itself is obsolete, it's that it's the wrong metric for circadian input, so the "10,000 lux" claim should not be made. Will have more to show soon.
The level of detail in this video is truly remarkable; your approach is not that of a UA-camr, but a scientist in a lab, and you show just as much rigor.
wow, what a video!!!!!!! So helpful, thank you so much 🙏
Thank YOU!
Mr. Yeutter,
Thank you for taking the time to research this and make this video.
After having positive results using this light, I’ve been recommending the happy light to people in my life, but I couldn’t really explain why it works, circadian rhythm, or what a lumen is.
I celebrate you, Mr. Light Nerd.
My favorite quotes (Paraphrasing): “I measured this with my spectrophotometer” and “I built an Excel to figure this out.”
Thank you!
Thank you, for sharing your video. It’s very informative. 🙂
Timestamps:
02:18 Product Overview
02:45 Company History and "Natural Spectrum"
04:27 10,000 Lux Claim; Lux vs. Lumens Explanation
08:46 Lux vs. Distance Test; Lamp Positioning
12:03 Melanopic (M/P) Ratio & Melanopic Lux
16:22 Vertical Placement
18:25 LED Measurements; Choosing a Better LED
20:00 Flicker Test
22:49 Final Thoughts
Since you have a Spectrophotometer, it would be really cool if you could measure the Lux of the Elgato Key Light at various distances. It's an extremely popular light that claims to be offering 2800 lumens, but it doesn't say how many Lux (and at what distances) That's because it's not meant specifically for light therapy, but for video production and streaming. But it looks really bright, so I'm wondering if it can be dual purpose (used for both video production and light therapy)
The Elgato Key Light can also be mounted on the desk (so about 24 inches away from you) and angled, for optimal melanopic efficiency. So it would be really cool if a light nerd such as yourself would do some measurements on this thing. I'm thinking about getting two of them and mounting one of the right side and one of the left side of my desk.
Hi Greg. I have a urgent question. I found this item: NASLI SunSun FP 4x24W, it says its FULLSPECTRAL imitation of Sun..
Do you think this a a completely different technology than f.e. VERILUX'S, or it is totally the same thing just packed in nice words? These days it costs 200-250€. Enlighten me! Thx
@@sandercohen3309 “light nerd such as yourself” 😂😂😂
Winter is approaching, and so do the views for this video :D
Definitely! There's a huge inverse correlation between searches for light-related topics and the length of days. For example, check out the Google search trends for "light therapy": trends.google.com/trends/explore?date=all&geo=US&q=light%20therapy
I learned so much watching this video. Just the difference between lumens and lux was explained so well that it got stuck in my mind. One of the most informative videos on this topic.
As someone who knew absolutely nothing about lights previously, thank you for explaining everything so clearly and effectively.
I have one in my home office. I can't quantify the benefits but I love being in that type of light. Usually id look out the window and think omg its dark already. I've not been doing that.
This is amazing, verilux should hire you! :^)
they are paying him for this review.
We shouldn't use screens before bed. But since we do anyway, here are a few tricks to make them produce much less blue light: ua-cam.com/video/wK04m5BupIA/v-deo.html
into: "shortest days of the year"; shows 9 hrs.... Cries in Scandinavia..
Disabled veteran here. I've always had seasonal depression (actually just depression in general) & when i told my Dr she said, do you want for me to send you a light box?? I had never even heard of one. The VA sent me this huge box, 2 feet in length & 1 ft in heighth. Little larger than i expected, but it's the VA. I'm currently sitting in front of it as I sip my coffee & found this video. Extremely well done research, sir. Thank you! ❤
Hope it's working!
God: Let there be Light
Me: How many Lux do I need?
All the lux
The Sun and the Son
I can’t express how refreshing it is to have come across this video. The information here is so clear, concise and relevant. You’ve done a fantastic job at explaining this and the effort really shows. Thank you!
Thank you Greg for all that really useful info. You briefly alluded at the end to a question I have though: A surgeon told me that if you are taking vitamin D supplements (or eating oily fish, etc.) the vitamin needs to activated by light. Is there a metric for how these lights activate vitamin D which is arguably more important than mood.
Do Halogen bulbs get darker with time?
I had a rough day and for I appreciated this video so much. Interesting and calming. Thank you for the video!
Have you tried the tuo light? It flickers between specific wave lengths to simulate dawn. Supposedly they’ve tested it on patients at Berkley. I didn’t notice any difference from an alaska northern lights northstar 10,000 lux fluorescent light box just that its effects were a little weaker, probably since it was noticeably dimmer. I used 6 tuo lights at once. Had the same withdrawal effects I get with any light box that I don’t from sunlight.
So halogen bulb is much better than LED?
The amount of informations in this video is insane 🤣 I just can't wrap my head around about how much time he actually put into it. 👏👏 very well done
But if you need a 10,000 lumens to combat SAD that is truly a 25,000 lux lamp.
Also, I noticed that grow lamps emit light in the blue range of 468 nanometers. So check into that instead of buying an expensive SAD light. A grow light can also help your plants 😊
So continuing on my thread of the lumens you can actually calculate how many lux you will receive based on a square footage of an area by doing a conversion calculator.
And it seems like certain corn shapep- Yes, that's what it's called-Light bulbs will help with this. However, the wattage might exceed your standard lamp of 100 w. these lamps are used in warehouses, large areas where illuminations are needed and would actually help you a lot more because with the right wattage you can install them in several light fixtures inside a room so you don't have to sit 12 in away from something or 6 in for some lux lamps. You can just walk around and do your day like normal inside your house, while receiving the SAD light benefits.
⚠ For those asking, I unfortunately can't provide product recommendations for specific SAD lamps. I am frankly disappointed by what's on the market, and we're working on something way better. To be the first to know when it launches, please sign up for the Restful/Bedtime Bulb newsletter: bedtimebulb.com/newsletter-signup
☀️ Vitamin D deficiency is common, especially in the winter months. In this follow-up video, I'll show you exactly why SAD therapy lights won't help with Vitamin D, and what you can do instead: ua-cam.com/video/MQv1N7iJCM8/v-deo.html
💡 Should Edison, Swan, or someone else get credit for inventing the light bulb? This video explores the 19th-century development of this world-changing technology: ua-cam.com/video/nfe-iQBUOjA/v-deo.html
@thecloudboundsound Any of them are probably fine. At least from the Verilux brand, they are all quite similar. Some of the higher-end models have more features, but those aren't really necessary.
@thecloudboundsound I think the fluorescent will work just fine for you. Best of luck.
So it’s been years since this video, has your opinion changed since than about SAD lamps? Is there any recommendations now? I really struggle with my insomnia for years and it triggers my ADHD even more than usual. But when we have sunny morning (England so quite rare thing) I sleep like a baby at night! It was such a shock for me how directly it impacts my sleeping so I try to find a lamp or solution to not just hope and pray the next morning ah e some sunshine 😅
this is a next level review!! thanks boss
The reference range for vitamin D is way too high. I was totally healthy despite my blood vitamin D levels being officially in the "deficient" range, but then I took a supplement against my better judgment and that gave me an unhealthily low platelet count.
Just discovered your channel. Very thorough and interesting. I'd love to see a review of the different SAD lamps and what your recommendation would be.
Wow, Greg... totally awesome video in every way. I was involved in one of the original studies of SAD at the University of Washington . Living here with so many months of f darkness and low hanging clouds, these really help. I was given a Dawn simulator for my participation. Your video is so informative, but done in such a way that that “everyday Jill” can understand it. Kudos to you for your service to us I will definitely be looking for all the products you inspire! Your Mum must be proud of you!😏 Looking forward to more of you!! Thanks !
Thanks so much!
Almost all of the lights on Amazon UK, even the cheapo ones, specify 10,000 lux at 10/20/30cm. I'm not sure I believe them, but at least they're trying :D
Verilux themselves don't seem to sell these products in the UK, they only sell light bulbs / lamps, and they're specified in lumens
Packs in so much information in one video. You dont need to watch anything else on this subject
Just find a full spectrum grow light. Thats what your missing in winter. If its great for growing plants then its also what your body needs.
LUX is measured light per square meter
Lumen is the output of the LED
I own a led business for 10+ years and thats my knowledge on it
1) Excellent video.
2) I noticed that Verilux now has an LED "happylight" floor lamp; it should help with the angle of light issue.
I got one for Christmas and my mood improved after the first use. It’s magic. I have a second one now and keep them shining on me whenever I sit down somewhere.
What brand would you recommend? I’m looking to get one.
This is an amazing video! Honestly , you did such a great job reviewing this product. One of the best YT reviews I’ve ever seen.
wowww you deserve a lot more likes for this video, very good research!
Thanks so much!
Thank you for breaking down the information on “lux” and “lumens”. Interesting….
Good information!
I’ve ordered a happy light 💡
It sounds as if its a lot more complicated than i first thought.
I took vitamin D3 last winter, and was doing much better without any light. If you are in Western, PA - its usually cloudy there - and especially in the winter - even more cloudy - ALL THE TIME. Should help those cases. But I would try vitamin D3 though in any case.
I found this while trying to find a stand for my happy light to mount above me. I didn’t find one, but really enjoyed your video! But now I definitely know that I need to find a way to mount it higher.
Thank you!
That was an awesome video,thank you very much.
This is the kind of detailed info I was looking for - thanks!
Greg, there is a difference between vitamin D producing light and full spectrum. Please explain that vitamin D from the skin can only be produced from the sun between months April to November. This can also lead to depression is the lack of vitamin d. Please explain the difference between full spectrum circadian lights and vitamin d producing light. Do we need both?
Great video and very important topic! So you are saying one could also use studio video lights for light therapy purposes? I'm looking at a few video lights from Godox which put out around 20 000-30 000 lux or more of 96+ CRI quality 5600K daylight measured at one meter, which is much more than many of those light therapy panels out there. But does the temperature of the light also matter? Since sunrise is around 3000-4000K, shouldn't the artificial light also mimic that to be most effective in triggering the start of the melatonin production and affect the circadian rhythm?
Very clear and helpful video! I just purchased a lamp from Beurer. They are the lead in Europe I think. They actually state the distance in CM you need to be from the product to get 10.000 lux etc.
This is such an informative video. As a science and facts and data geek, I needed this, thank you Greg! I have recently moved to a location by the Arctic circle and I have been considering getting one of these SAD lights, as we will soon go into total darkness out here. I have been doing lots of research and reading up on these lamps and honestly haven’t been totally convinced… This video has been by far the most comprehensive source of information. Personally, I have been looking at Beurer, which has been celebrated for its German engineering and also as it has been certified/approved as medical equipment. Would love to get you test one of their products. However after watching this video, I think that even my Newer stand lamp might be a good source of light for the circadian rhythm. Thank you so much for making this video!
Thank you!
I really like the studio light idea. Do you have any recommendations for one to achieve the desired stimulation? Perhaps something wall mountable. Cheers - great video!
Great video. I didn't expect to watch all l the way through. Does anyone know if Verilux is still using the "cheap" led or if they are using a better quality led to fill in the cyan gap?
Saw that 999... so I just became your 1000th subscriber :) great video, great scientific approach that was surprisingly easy to follow.
Thank you! More cool lighting stuff on the way.
Light therapy was recommended to me from a sleep doctor, this was a lot of useful info. Thanks!
I'm looking to buy a lamp and this was so helpful to know what to look out for!
From someone that knows absolutely nothing about any of this, but bought one of these light sources, this video BY FAR gave me knowledge that I absolutely appreciate. By giving just the facts and in a way that the common person can comprehend and understand is greatly appreciated. Thank you for the info! I will likely NEVER need this info, but just understanding what's going on is exactly what I needed. Awesome video.
Thank you!
669 subscribers! can't wait till your at 699 😄
Keep on producing great content brother
Great job man. Most thorough review I've seen👍
Thanks so much!
As someone who intuitively knows that more is not always better (applies to everything) and a very bright light could possibly be a trigger for epilepsy and other adverse health effects, I immediately started looking for reviews like yours. Thank you very much.
Hi Greg, I'm just 1/3 of the way through your video and having to pause to go do stuff. I know its 3 years since uploading but I was just wondering if you could recommend me a genuine and effective SAD light, as I've been diagnosed with SAD and as its getting into shorter days here in the UK id really appreciate it. I have no budget limit, just would like a solution to this shit, its dark and gloomy too much here right now lol. Also is there a difference in wake up lights vs SAD lights? Sorry for the questions but its all new to me and so I'm beginning research, but you're clearly extremely knowledgeable so I'd appreciate any help 😊
P.s. I don't struggle with getting to sleep/staying asleep (I sleep too much if anything)
Can someone ugly please do this report. This guy is just beautiful. I can't pay attention.
🤣🤣 wtf is wrong with you.
Hahahaha
His voice makes me less depressed, who needs a therapy lamp! Just listen to his videos. ☀️😌
I vaguely remember hearing that at least sunlight being received by not just the eyes, but all the rest of the body also moves the process of the circadian rhythm along (unscientific wording, but I'm trying to get the point across)... So I'm wondering if and how beneficial it can be to hold it at 6 inches, but not toward the face and eyes, but toward bare skin
There is research being done in this area, but we're in the early days. Longer wavelength (think red and infrared) light is going to be able to penetrate the skin further than blue/green/violet/ultraviolet, so personally I would stick with the SAD light as intended, but some sunshine here and there wouldn't hurt.
@@GregYeutterTheres a UA-cam vid where a woman says that her led face mask helped her depression, as a side-effect. I'm tempted to buy one, but am worried about the effect of the red infrared and far infrared light effects on eyesight.(Perhaps closing the eyes would be enough to reduce this , but will it be as effective.) Do u have any thoughts on this ? Thanks for greatly informative vid.
Very informative. Thanks.
Thank you!
whats you opinion on the Carex Day-Light Classic Plus Bright?
This is actually the first time I've heard of melanopic light. Very informative. I only had time to skim around the video; what I'm looking to get is something that will stimulate Vitamin D absorption. Is UV needed for that? Or can a HappyLight or other Verilux product help with that? Would love to get your knowledge on that subject.
Excellent video! Thank you for doing your research and sharing the knowledge!
This man is so good looking and calming I don't remember a thing he said
Would you have the time to review this particular S.A.D. lamp? Carex Day-Light Classic Plus Bright Light Therapy Lamp - 10,000 LUX At 12 Inches - LED Sun Lamp Mood Light and Sunlight Lamp
Thank you.
how come it's 0.84 ratio if there is such a dip down exactly at ~480nm🤔
If you have SAD, the worst thing for you isn't antidepressant because it will just make you sleepier and sleepier
To the point where you can't get out of bed at all and sleep 10 hours a day. So if you feel you have sad that would go with it like therapy first because antidepressants and anti-anxiety medication will compound the problem.
Thank you for this video, it helped a lot. I'll put it on a monitor arm to aim it from above.
My psychiatrist recommended one for my treatment-resistant depression and I was worried I would get an ineffective one. At this point, I would be willing to put it directly onto my eyeball if it could help.
Because the SAD has a very 'early peak' in the spectrum regarding blue light or UV-light. Is there a chance that a SAD light is harmful for the eyes, and how can one find out? I just bought one this week, but I'm a bit weary of the type of light. Thank you for the very informative video btw!
Is ur lightbox UV free, and full spectrum?
Can one use a full spectrum 100 watt light bulb on a pole lamp, which will be slightly higher than my head. Or are these bulbs not the same as these LED’s for SAD.
Just curious, you've done the tests on the HappyLight, can you provide us with the same info you had trouble getting from Verilux? That is, with the studio setup: what distance is optimal, what light settings (Kelvins, lumens, etc)? I guess it won't be the same between different gear, but it would be nice to understand how to actually use products you linked, especially since the use is experimental, I doubt there will be many resources?
My Beurer Brighlight TL30 stopped working after two years
Can I just use a real 20-30k lumens video COB light ?
I get seasonal effective disorder from sunlight but there's no way to make it look rainy outside.
Thank you for shining some light on the subject. LOL. Appreciate this amazing research and great information, wow!
" Shinning some light " 😄😄👍
0:45 Would be nice, but I'm always at work then. It's dark when I leave my house, and dark when I get back. :(
I have this light box. It's my 2nd day. It's burning my face cause I use acne gel 😒
Thanks a lot Greg. Managed to save a hundred quid and simply use my wayyyy more powerful softbox instead haha
Nice!
Can we not just use a few regular bright 11 watt LED bulbs instead of spending money on the light boxes ?
The main problem I have with most of therapy lights is they look like they give off foggy/muggy day sunlight which the opposite of the sunlight I need. The sunlight i like is bright sunny days, these are really bright and white instead of yellow and warm.
What is name of that premium led with very good light spectrum? Is there and monitor that future them?
This was a truly informative and interesting video. I was engaged the entire time and learnt a lot. Really appreciate your in depth analysis of the product.
Thank you!
Very informative. Thank you.
What about moodozi they say there the best and use a different light than the other companies. Do you think they are the same as theralux
I bought a visor one and it’s easier to use. The sit by the lamp doesn’t work for me.
As with other comments, I also stumbled upon this, and found this extremely informative.
Thank you!!
Glad I could help!