I Tried a Non-Invasive Blood Sugar Watch. Miracle or Scam?

I tested 3 non-invasive blood glucose monitoring watches. I compared the blood sugar readings from the watch to the readings from my blood sugar meter and my Dexcom CGM. Do these non-invasive CGM watches really work?
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[@TypeOneTalks]

IMPORTANT ANNOUNCEMENT: Please be careful whenever you see commercials for non-invasive blood glucose monitoring watches. Not all these are sold only on Amazon. After filming this video, I discovered several more models advertised heavily on Facebook. These commercials are often using video footage stolen from diabetes influencers with AI generated voiceover. I'm 99% sure these are all trash! Please share this video with your diabetic friends, especially with those who are more vulnerable and more likely to fall for these. Thank you for your help! WATCH NEXT: I Tried a New CGM You've Never Heard of kzbin.info/www/bejne/gnjXnZ9sZ6erapI Your Blood Sugar Reading is Wrong. Here is Why kzbin.info/www/bejne/ooHEe5Z-gsmXh7c

[@dbtest117]

I would like to know if there is a long delay I suspect the skin will not fluctuate quickly unless you have high glucose values for a long period.

[@Corsina]

I'm hoping there will someday be a watch that keeps good numbers. I'm sick of my glucometer! lol I can't afford, currently, the continuous meter. I'm keeping my eyes peeled for something that keeps up with sugar changes quickly and is reliable and reputable. Thanks for your video!!

[@karenmcguire7292]

We could not find any whatsoever on Amazon. I suspect Amazon may have started restricting the sale of these items. Family members suggested that big pharma bought them up to eliminate competition. Guess that perspective would depend on how well any work at all vs not at all.

[@sckirschstein]

It's not the skin. The skin has a very slow reaction time to the chemical composition of the blood, more than 24h. As I explained earlier, the electronics of this non-invasive meter camouflaged as a watch, is an low power high frequency alternating current measuring bridge. Stricto sensu, the application of the technique is not wrong, since the bathroom scales to measure body parameters (those nice ones of glass with two steel strips to be standing on), are working under the same principle and the same small battery. The detail is that the body portion used by the scale is very large: The lenght of two legs and the pelvic zone, giving more body volume to be evaluate, compared with barely 0,5 cm² under the wrist watch, touching a poor blood irrigated area. Although, different is the working principle of the fingertip oxygen meter, which sends an low power red or infrared beam to the skin and a light sensible diode (think on a light sensor) built in an circuit changes its parameter due to light interference with the light that bounces back from the tissue and under the blood irrigsted tissue of the fingertip, which varies with the oxygen concentration of the blood in an satisfactory accuracy of 1%. Perhaps the non-invasive wrist watch is not fast enough to catch spikes or hypoglucoses, due to its bad position over the body, but the principle is probably correct. An innovation could be that on the same wrist watch, the oxygen percentage and glucose content may be correlated by combining both techniques, or puting the HF circular electrodes on the bottom side of the wrist, where the veins are visible. I suggest our friend to repeat the same experiments with the three watches, butthis time turning them 180° around the wrist. Probably the readings will improve.

[@krollpeter]

Please try placing these watches on a table surface, measure the GI and then tell me the result. Most watches will show a result, because they are simply programmed to show a certain GI at a certain time of the day, for example a low value in the early morning, or a high value around 9:30 to 10 am, after breakfast. Eat nothing for a day, and then measure around 2 pm. Eat 50 g of sugar at 6 am and then measure.

[@maspur100]

I’ve been trying a similar smartwatch I bought from Ali express. I used continuously for about two weeks. My conclusions are: 1) it doesn’t measure my glucose level at all. 2) It’s just displays aproximate normal glucose level at given time, and algorithmically goes up or down according to popular eating habit (not even MY eating habit!). For exampe, at 8 am it gave 100 mg/l reading, and then at 9 am it gave around 120-140, with or without me actually eating. The pattern goes the same even in my fasting days.

[@petec1776]

You are correct. These cheap watches just have a standard blood sugar profile. It's the same every day. I tested one myself, and I have the data to prove they are rubbish.

[@canuck21]

Why would you waste your money on Ali Express on something like this that is related to health?

[@MetalheadAndNerd]

​@@canuck21Because it's still better than Temu?

[@2009duny]

It’s a toy😢

[@canuck21]

@@MetalheadAndNerd Why not eat rotten egg? I mean it's better than eating poop right?

[@CarbageMan]

My first clue that there are serious issues is that Apple has been working on this for a long time and they still haven't introduced it. It was rumored they were going to introduce it a couple years ago.

[@jaerg91]

Yup, it’s nice to see tho, that they are not selling something that they know it doesn’t work.

[@Bewefau]

NO the issue they have right now is there getting a copy right claim on the patient. Some company is saying they stole there invention. That's why it hasn't been out yet.

[@ZimZam131]

@@BewefauI cannot confirm your claim anywhere. The technology doesn’t even exist yet, how could there already be a copyright claim? Seems a lot like you just made it up.

[@Hasan-jf7by]

⁠@@ZimZam131 It can happen. Even if there is no real product on sale, there can be tens of licensed technologies.

[@vueport99]

​@@jaerg91because Apple don't want to get Sued!

[@HarlemLightsMD]

Thank you so much for doing a video on this! I’m a retired urologist/gynecologist in the USA. I’ve seen these advertised and knew it could mean danger for a Type 1 or Type 2 diabetic utilizing it to dose themselves with insulin. Hugs 🇺🇸

[@sfdsd07]

Won't even move me to slightest bit to purchase this. We still need our blood pricked for accurate result. Our life depends on that 😅

[@jameskoryta7197]

About 30 years ago I volunteered as a test subject of a "future" noninvasive blood sugar device. I was connected to an IV drip of insulin that had been highly diluted and this was used to vary the blood sugar down. Then glucose was used to bring the level up. The device they used was using infrared sensors aimed at the skin. They took blood from another IV about every 15 minutes and were comparing readings. It was quite an ordeal taking a full day. I was thanked and given a check and dismissed. I could not even find out who was considering making such a device then. It depended on the test results. So here 30+ years later things may be changing.

[@andrewdavidson665]

Could have been the Glucowatch. I'd imagine they were in development 30 years ago because they came to market in 2005 or so.

[@maxmeier532]

things arent changing. non-invasive measuring of whatever has been subject of research for several decades all over the world. but there are only very few applications for it, and invasive methods are often the only way and always more reliable.

[@jameskoryta7197]

What was interesting at that time was the piece of equipment they were using for the non invasive test. It was the size of a refrigerator lying on its side. I laughed and told the researcher that it was sure pretty large to be hauled around for use. She stated that they were then trying to verify the accuracy of the device and not worrying about the size. They would make it much smaller if the accuracy could be gotten.

[@terriplays1726]

You can bet your ass Apple is researching this topic heavily. It would be THE killer feature.

[@llleiea]

@@terriplays1726yeah, but I think it might be a long way before it’s accurate enough for t1d. However if u want an idea of how your body reacts to food or sport for healthy ppl, it does not have to be so reliable.

[@MrRooney182]

Was really wondering about these devices as their ads are everywhere, thank you for taking the time to test them

[@paulphillips3783]

Thanks for taking the time to put this comparison together. Excellently presented and vital information.

[@paca_bill4863]

My wife and I tried two different watches from Amazon, both were sub-$100 pricing. Let's just say the most accurate thing about either was that they keep a good track of time, and that's about it. Otherwise, they were also both just random number generators when it came to blood glucose levels. One of them also supposedly measured blood pressure, but I think it was just recording game scores from some on-line games.

[@sarowie]

I bought a Samsung Watch for blood pressure measurement. Such non-sense tech. I mean, in my case, the upper arm blood pressure monitor barely gets consistent readings (my pulse can go down to 50ppm and upto 90ppm in seconds; that makes it tricky to measure anything), but at least that tech is at least "official" and with 2 or 3 measurements, you either get a valid average or need to retry a few minutes later. But the Samsung thing just takes one blood pressure value as its calibration point. What is the point, when my values are inconsistent? Does the thing at least warn about the issue? No, why would it admit defeat?

[@twitchster77]

Were you able to return them for a refund? I once bought a smart watch off of amazon I wanted specifically to keep track of my heart rate...after fussing over it for 3 weeks, I finally gave up on it (very inaccurate) and even after all that time, Amazon let me return it for a full refund.

[@MACTEP_CHOB]

All those `smart` watches can read pulse even on bologna. No matter the price. Which is absolute baloney ;0) @@sarowie

[@psdaengr911]

This is one of the most objective tests I've seen of so-called non-invasive glucose monitoring devices. I've been actively following the half dozen legitimate companies that are seriously working on non-invasive devices and none of them have technology whose price will come anywhere near $100. Instead they all appear to be targeting a delivery price of a wearable device that will be approximately the same cost as 1-2 years of CGM sensors.

[@davidbraswell1481]

Samsung, and Apple watch will be the first 2 to the market with it Samsung has predicted it being on thier watch 7 pro when it comes out. and Apple says they are close and maybe 2 years out still on the Apple watch Ultra X

[@crystalstewart5878]

I am so glad you took one for thr team and tried these things. I have been seeing them pop up for over a year, but could not imagine, if they were real, why hasn't Apple or Android put the technology into their watches. I have been so tempted to buy one anyway. THANK YOU❤❤❤

[@Dojan5]

It's quite possible that they are real. Knowing Apple though, they won't put something like this in their watch unless they're certain it can be useful, _dependable_ and decently accurate. My guess is that the technology just isn't quite there yet.

[@jahmd8377]

@@Dojan5they have been working on it. The fact that they haven’t incorporated it yet says they aren’t there yet.

[@thegooddoctor6719]

Yeah, I worked on this technology in the mid 90's - chemometrics - using spectrum light on the skin to create an evolutionary cross correlation algorithm to determine glucose values. It was rather difficult back then to get any real reliable reading. It was interesting though...... Good content - thanks....

[@Nasserist1969]

Will they ever improve them?

[@thegooddoctor6719]

@@Nasserist1969 All I can tell you is that Apple is exploring a noninvasive way to measure blood glucose levels. The noninvasive technique involves shooting a laser under the skin to determine the concentration of glucose. Apple has been working on needle-free blood glucose tracking technology for 12 years, but has not yet shown any meaningful clinical data.

[@pobrien864]

Thank you for testing these and publishing this video!❤

[@shaman.alsharou]

Thank you for testing those watches on behalf of all of us!

[@boosterman7023]

I was always curious about these devices. Thanks for the review. It looks like they are just providing random numbers lol

[@laudreport3798]

😅😹😂... 🙊

[@hometechUK]

I think Samsung does the same for.blood pressures is it just random numbers?

[@PJ-sv4iw]

Thanks. I don’t have to watch the whole god awful video now !!

[@JohnDir-xw3hf]

Chinese scam as always.

[@eclampsium]

I have one of these pice of sh*t and it seems to increase the glicemia on the moments they expect me to est, even if i’m fasting…

[@cromemcos]

SO SO happy you have done this testing. I've really wondered the same thing but never spent the money to do the testing.

[@janetnicholson5001]

Thanks for testing these watches for us! Much appreciated!

[@abulbashar4754]

Thank you Mr Tom for your support comparing blood sugar devices tests video.

[@wyosundancer]

Really refreshing to see an actual test/comparison

[@terencehawkes3933]

Thank you for doing this Tom. I was hoping someone would do this and was glad it was you.

[@Jennifr1966]

After watching thus video a couple months ago, my LADA husband got really excited about an ad about the watch. So thank you for having done this video. You saved us from wasting money!

[@andrewbrown6578]

Thank you, i was about to try one of these watches after just finding out about them, luckily i came across your video, thanks for stopping me wasting my time.

[@kyjennifer]

I hope they come up with a genuinely good non-invasive device for monitoring glucose during my lifetime. I'm so excited about the prospects.

[@nailsofinterest]

Thanks for everything your doing!! As a pre diabetic im trying to learn as much as I can and make changes. Your bread video helped me make one big one! Plus it tasted good! 😊 Huge thanks!!!

[@sigalsmadar4547]

Check out Dr. Ken Berry to permanently reverse T2 diabetes. It IS ABSOLUTELY POSSIBLE!!!

[@boatman222345]

Excellent video and it's great to have a trustable info resource help us detect a scam! Thanks!

[@blue_jm]

Thanks for making this video. I was suspecting that this might be the case but now it's confirmed.

[@TomLentz]

Thank you for doing this! I'm looking forward to the tech being perfected, but like you I assumed the ones out now were junk.

[@miguelberrios19]

Thanks for taking the time to expose how these type of smart watches work, or don't work. I have always been very skeptical of these smart watches. My concerns were that the readings would be way off, and that they would not last. I am keeping an eye on the upcoming smart watch from Apple, which will include the blood sugar monitor. Although they are still in the developmental stage at this time.

[@GarlandCoulson]

Incredibly useful video! Thank you so much for testing this for us.

[@BillDyszel]

Excellent and thoughtful review! Thank you!

[@alphadog3384]

Thanks for your comparison video, we all will be "better consumers" (buyers) because of your service.😊

[@kwtay1746]

There could be a delay in the readings by the watches. Should plot the graphs half-hourly to see if there indeed was a delay.

[@ShankarRamamurthy-ju5ih]

Really good video..creating awareness amongst public..! Appreciate your efforts🎉

[@paulmathews7021]

I just subscribed to this channel because this guy comes across as honest and intelligent, thank you sir.

[@mixup2216]

I think it’s very interesting that they all are close to each other despite being off from the real value. So they are definitely measuring *something* well, it’s just not blood sugar.

[@tharealmb]

They can also not measure anything and just have a set number based on the time. Cheap heart rate watches do that too. At night they just show an average person's heart rate. In the morning it's higher, during the day low, till 12 when many people take a break and walk around. It's insane that this stuff is even allowed to be sold. It's clearly scamming

[@mixup2216]

@@tharealmb thats my point exactly, it’s simply measuring the time in that case lol

[@paulmoffat9306]

How nice, that is quite similar to a device that I outlined to the Sunbeam Medical Division in 1995, when I was being interviewed for a position there. Mine also included Blood Pressure information as well (and a slew of other tests that could be done non-invasively).

[@lupolun]

Thank you for very useful information! Seems like you have good glucemic control, btw! Good work on both counts.

[@demonSlayer4563]

I was thinking about trying these non invasive watches. Thanks for the video Tom!

[@chrisgarwood2237]

Good video, not suprised that that the cheap watches fail so badly, for another test have you consider wearing one of them continuously and seeing if it tracks better over a long period, it could be that it gets a base and works from that, rather than putting them on and seeing what they detected there and then

[@amandawillmer2626]

I wear my watch continually, the reading always, says 6.7. Or 6.5 my blood sugar is actually reading14 this is second watch. Usless

[@aidendutton8352]

Hey dude, thanks for this really useful video, I've been toying with the idea of trying one of these for a while, but vids I've seen don't fill me with confidence. On a plus point I've made huge changes to what I eat, cut all carbs and fibre as an experiment, results so far are that my horrendous average bs of 22.6 has now reduced to around 7.6 in 3 weeks! Sticking to this change to see what else happens but so far so good 👍 Hope it helps, keep up the good work, your vids are great 👍❤️

[@trishmiscavage3129]

Thank you for doing this video. I just saw ads for these watches and was so excited, but decided to check reviews and see was actual people have experienced. Was disappointed, but kinda felt it was too good to be true. This is the kind of lie in the advertising that is very dangerous for people who simply want to do better for their health. Thank you again. So much

[@ruudvanwuyckhuise6519]

well I have such a watch too. And did a different test. I took 40 readings one after the other. The readings varied between 6.1 and 6.9. And yes the average was 6.5. I did this test because after using the watch I found these random values and always somewhere between 6.1 and 6,9 And those measurements were done always in the morning around 08.00 and a day apart. Sometimes I woud do 2 measurements and yes the coud vary between 6.1 and 6.9 Of course having all these readings I put them in a spreadsheet for statistical analysis. Average 6.5. Variance 0.3 Minimum 6.1 maximum 6.9 Looks like a random generator. These are all safe values. But I I don't trust them a bit. They say nothing at all. Further investigation on the internet showed that the technique to do this type of measurements is not yet available in a way it would fit in a smartwatch. Thats why Apple watches don't do this type of measurements. Well draw your own conclusions. But selling a watch and claiming a specific value can be measured while the technique is not yet available tells me the manufacturers are more interested in selling than in an honest reading.

[@jjjacer]

Yep i have one and noticed the same, basically always in the 6.1-6.9 area, even when i know i was high blood sugar (200-300 range - sorry dont know the conversion)

[@karenmcguire7292]

Just thinking what it measures could be the skin/surface effect which may reflect delays in the numbers, like when we (or those of us) who relied on test strips for urine testing.... it reflected and did measure sugar but was always after the fact. Thank you for this review!

[@zivadiva]

Me thinking the same. Cgm has a known lag too and is different because what’s it’s measuring. If this is ever accurate it’s going to be more like cgm or a mix. Light works for oxygen to some degree (I’ve gotten random numbers from mine too). It could by detecting some trait in the reflectivity or conductivity. But as he said no manual says how to use or how it works so you could know oh it’s going to be x min off or I have to hold it tight to the skin. Or even expect y percent difference from serum levels. All of which will apply to the real technology when it’s live. I think wolf had one at nearly double the price and I can’t imagine a el cheapo one being anything. A no name brand is a hoax big a larger company has more skin in the game so there would be sure it’s measuring something and consistency to it not a random number generator as some pointed out

[@johnathonlivingston7573]

Useful information. Thank you.

[@engr.ediyoakpanesen7260]

My experience with this watch is that it assumes when you are supposed to eat and raises the graph of the reading accordingly. It assumes you are eating 3 times a day and the wave of the graph follows this pattern. For me that skip breakfast, the reading was off. So I realize that I'll just have to use it for other purposes but definitely not for blood sugar or blood pressure.

[@slshippee1]

Thanks for doing this. I was just going to pull the trigger on Amazon and pick one up, but you video has shown that I need to do much more research. Appreciate your efforts very much.

[@emilyrosta4910]

Thanks Tom - I've been curious about these!

[@killtheorangeclown7883]

Thanks for the info Sir.. Happy Holidays...

[@jasonhalil2591]

I have one of these watches, they use the green laser tech invented by Huawei , the tech works by firing a laser under the skin into veins and using an algorithm to make a glucose reading based on the colour changes detected which are caused by blood sugars. I did find my watch got more accurate over time as mentioned in the instructions and it needs to be positioned correctly and firm not loose. While not in perfect synch with my blood glucose monitor , it was pretty darned close!! and clearly showed a bell graph over time correlating with my food intakes and of course there’s a possibility that the watch is more accurate than those other devices? All in all I’m happy with the watch results, I even deliberately ate some chocolate to see if it would show the higher spike and it did. It was very reassuring and see my body bring down the glucose spikes after eating. I have concluded the accuracy of my watch in measuring blood glucose and blood pressure and all the other readings really depends on how tight it’s worn, what position it’s worn in and how much I’m sweating. The only inaccurate measurement was the pedometer which would measure any wrist movements as steps.

[@DanielGlover]

OK. Read this after my own comment. Started on reading the comments. So with time, wear it right it does work. A good idea but watches like this, some at work have these cheap link to phone watches, Just to big for my thin wrists. A good idea though.

[@karenmcguire7292]

Would like to know which one you are using? If that is possible?

[@Yasmine079]

Which watch were you using? I would love to try it too as a t1d!

[@jasonhalil2591]

@@DanielGlover I have the KSO2 watch which I paid $70au for but I treat it as a guide and it’s great for that.

[@jasonhalil2591]

@@karenmcguire7292 Hi, I got the KSO2 for $70au , it is very thin and lightweight with a silicone strap and often forget it’s on my wrist it’s that light.

[@phirozecontractor6905]

Thank you for taking the effort. Was always skeptical about these watches. Apple is supposed to be developing one & maybe that would be more accurate. Let’s hope non invasive tech. Catches up. 👍🏽

[@Rockiii9]

The watches measure glucose levels in interstitial fluid, which is inherently much less volatile than blood sugar. It’s precisely that stability that interests researchers, since it may be a more reliable indicator of average blood glucose levels over time. In the same way that A1C doesn’t reflect transient effects of diet or exercise, neither does interstitial glucose level.

[@Jack777760]

Thank you!Keep up the excellent work that you are doing.

[@e.u7778]

I think the readings are delayed for the wrist watches....but again, if they are sure of their technology, they should submit to the relevant authorities for vetting.

[@vladvld3433]

The readings are guessed based on formulas of data you input at setup. Age sex height. . A sensor can read a pulse(HR) But it can't "scan" through skin and blood vessel membrane and analyse the chemical composition of the blood to give you glucose levels. There so many other nutrients in the blood at the same time. Hard to believe the sensor can distinguish them😂

[@smc812]

@@vladvld3433however we know Apple having been working on non invasive monitoring for some time, in theory you can measure BG based on how light is absorbed by blood, the trick is to make this accurate enough to be medically useful. Clearly no-name smartwatches aren’t doing the amount of verification required, but one day there’s a chance we’ll have something. As a T1 using Libre paid for by UK NHS it’s not going to be that big a deal, nice to reduce costs and waste, but for other diabetics who don’t get free Libre then this could be huge.

[@oldtwinsna8347]

@@vladvld3433 Have to agree, it's probably just using some junk formula based off heart beat, i.e. function would define low heart rate over time to be lower blood sugar and the other way around. Explains how after his workout, where his heart rate would remain higher for a bit due to recovery of lactose flushing, the thing gave a high glucose reading instead of what it truly was.

[@daddythehut]

I tried a $40 watch I got from Amazon. I kept getting good results on pulse, on Glucose. On blood pressure. I got the same great results for over 2 weeks. I then put my watch on a water bottle and again got the same great results in the same ranges as when the watch was on my wrist! What?!😮

[@albertokusmic9239]

great review and comparison test, thanks for sharing!

[@saud1963-]

Great research. Thank you so much for making it clear for us.

[@gingeranderson7263]

Thank you so very much. This is what I figured. You saved me some money. I think I will stick to the meters I have.👍

[@rebeccajordan4491]

Honestly, I would just be grateful if they would get the technology that would let my Apple Watch work as my sensor device so I didn’t have to lug my phone around everywhere. But if the watch itself could do the readings, that would be cool, especially if it could be a one-and-done purchase rather than 4 annual investments.

[@golmatol6537]

Thank you for doing this video ... I was actually wondering if I should buy one of these. Money and confusion saved.

[@igor-kostelac]

Thank you for covering this topic

[@tinaswearingen8399]

Yes, I bought one, too much of a variance. I tested premeal, post meal, before and after exercise and did my blood glucose literally at the very same time. My sugars go from 90-285 post meal, the watch has never shown higher than 120. Absolutely not reliable. As a hypoglycemic I need exact measurements so that I can adjust food, drink throughout the day. Totally agree with reviewer, current products completely unreliable.

[@lunahay8783]

Thank you so very much for making this video. It helps to go to the right direction in picking a smartwatch that would be beneficial for me. I really appreciate it.

[@diabeticinthewild]

Thanks for the information. Very helpful.

[@ethimself5064]

Curious - On one of your pervious vids you mentioned that some glucose meters are up to 30% off. Are there specific brands to beware of? Perhaps various models? 30% off base meters should not even be on the market.

[@RKingis]

I noticed Medicare doesn't cover Walgreens meters, even though they are cheaper overall. I guess they aren't very accurate.

[@ethimself5064]

@@RKingis Maybe

[@asphaltcowboy7567]

One touch and contour are by far the best and most durable..

[@mattnobrega6621]

Please be careful when doing these experiments. Thank you for all that you do. From one t1d to another. 😁👍

[@erker6423]

what do you mean ? careful.....you use them in addition to your standard procedures, and make a table of your values, over a couple of days. of course you do NOT rely fully on those 'cheap' watches. Just be responsible.

[@apuz13]

Great video. Thank you for taking the time to do this.

[@042854able]

As an educated individual accustomed to research methodologies, I very much appreciate your taking the time to share your very objective comparative outcome. Thank you. I don't think I will be pursuing this generation of watch based non-invasive glucose monitoring devices.

[@kylek29]

Considering Apple bought the company who was making the sensor (and had the patents) before they even got them to market, I doubt anyone has been able to successfully clone it yet.

[@nonlinearthinking]

The processed food industry and sugar industry would pay a fortune every year to keep any non invasive technology from ever being accurate. It would destroy 100’s of billions in revenue for all colas, junk food and 1000’s of patisserie bakeries.

[@isocarboxazid]

@@nonlinearthinkingBIG BLOOD SUGAR STRIKES AGAIN

[@vj88319]

@@nonlinearthinkingApple are a trillion dollar company and it’s in their history of not listening people telling them no. Just look at the iPhone. Telecoms wanted a lot more control of what the iPhone was allowed to do. But Steve jobs said not in this life time. Food companies trying to buy them out would just push them harder to release it.

[@Hubertdtu]

This was an interesting video. Do your tests account for the delay effect that, e.g., the Freestyle Libre has? That is, that the measurements are approx. 15min behind the actual value in the blood? If those watches would work, they would be a good help for people with Diabetes Type II. How do those watches measure blood sugar compared to CGM and using the prick method?

[@dwightl5863]

It appeared that Tom did the readings when is numbers were steady. Making a reasonable assumption that the watches, as well has the G7, are reading glucose in the tissues and not blood like a fingerstick.

[@karenmcguire7292]

I hadn't thought about the Type II benefit, but you are correct, if there is any level of accuracy, would be better to have some reference than the dreaded/avoid of the finger stick for type II; which I understand because I am Type I for 50 years, husband is now struggling with Type II - he is on medication, but has developed resistance over the past year and now on 4th Type II medication. Thank you for suggesting.

[@pollux901]

Excellent video! Thanks!

[@dhey007]

Thank you for your quick research!

[@earthisdoomed8811]

This Jerry doesn't rig Anything😅

[@kensredemption]

lol It’s Zack’s long lost cousin I think

[@sckirschstein]

The working principle of these non invasive devices is similar but not equal to the fingertip Oxygen % or the bath scales to determine corporal grease, water, bone or muscular mass: It measures the high frecuency impedance ot that part of the body (slightly under the skin), but the scale goes along both legs until the pelvic area where the circuit closes, so it takes more volume of the body than the watches or the fingertip device that measures over 1 cm² or less. The fingertip device sends a micro power laser beam through the skin. The laser light that bounces back to a sensor varies with the Oxygen % on the blood.⁴ The gluco-watches are doing the same, together with the micto power high frequency electricsl pulses through the skin together with the green laser light bouncing back. The amount of light that bounces back, together with the impedance neasured in a certain time through the skin, may be affected by the shugar in the blood. So it's not magic nor rocket science, but simply a principle of the Physics brought to practice. , The smart watch may be good in between the normal values. On extremes of the range the sugar may not reach fast enough to determine the parameter.

[@rainbm]

This person loves writing but doesn’t appear knowledgeable to me

[@mightymulhern]

Thank you! I had been considering trying one of these myself. You just saved me some time and money.

[@MaciekKolodziejczak]

Thank you for the detailed and comprehensive review.

[@akashrajpal6034]

Great review. Very helpful

[@rebeccakay3645]

Thank you so much for this!!! I was so excited seeing the watch on Facebook (type 1) my insurance doesn’t cover CGMS, and after using samples I’m sure I could get my A1C to 6 or even lower! So I went to the internet to see first…. And your video was very thorough and let me know to not save up money I don’t have for this! I hope everyone like me researches.. this is indeed not only a waste of money but a VERY dangerous product if you trust it.

[@bencheng2864]

I am very interested in this technology. Thank you for testing these watches.

[@quabledistocficklepo3597]

Thanks for that. It's just what I needed.

[@jeffgrave]

Excellent video testing done. Just subscribed.

[@grahamgrocott5008]

Very good video clear and concise well done.

[@nannieg7622]

Very valuable information Tom, as a newbie I have a lot to learn. Thank yoou

[@edwinjoshua2041]

Thanks for the enlightening information 🎉

[@jamkpa]

Very informative testing.

[@scoti5]

Great video and review. Thank you

[@marilynharris4118]

Thanks for this report!

[@fantonuca]

Hey Tom! Just stumbled across your videos. You have outstanding information! It's so good to see you doing so well. I'm 72 yo & had a successful kidney transplant. Unfortunately, years of being immune suppressed along with less active in retirement has given me type 2 diabetes. I'm managing it well with Farixga as well cutting down on breads & sugars. Thank You for your work. You seem like a good guy! Best to you & family

[@bayareaconsult4115]

Thank you for this test 🙏

[@daviddjerassi]

A Excellent informative video Thank you your ahead of the game.

[@ethimself5064]

Great catch

[@vijaymsingal4184]

Great job brother

[@danielfeld8724]

Great content .. I was about to order a watch when I came across your video .. very informative. I did subscribe.

[@mclarenjohnf1]

Great information. Thank You!!!

[@zendasmom]

Thank you for this review! You just saved me some money.

[@moussaiberraken2134]

Really good and scientific approach. Would have liked to see a longer timeframe but great still

[@johntalley7326]

Great information. Thank you.

[@colhad9505]

awesome test. u r the best ❤

[@unkobold]

Great job, you’re the best !

[@handsomesg6390]

Thanks for the valuable information. It is very useful indeed. 🙏

[@user-mr7xw1mr9z]

thank you for this effort - very helpful!

[@dogphlap6749]

Thanks for the heads up. I could see myself buying one of these since I'm a sucker for new tech but now I'll wait for something that works a bit better even if the asking price is substantially higher. Best regards.