New studies find carcinogens in vg and pg at high temps, even in tootle puffers

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untar

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However, this strengthens the external validity of the study
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What a clowncar that research team is.
 

MikeE3

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And then there's this from the report itself ...

" ... It is worth noting that although e-cigarette– only users had significantly higher exposure to 5 VOCs, controls also had detectable levels of these chemicals. In fact, human exposure to VOCs from environmental sources is ubiquitous ..."

Definition of ubiquitous

: existing or being everywhere at the same time : constantly encountered : widespread
 

zoiDman

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Z man, keep going! I'm really enjoying it, honestly... :)

Anna

I would. But I need to take 5 Minutes to Wipe the Spit off my Computer Monitor.

I've Noticed that this happens 87.33% of the time (n=20+) when I read a Study about e-Cigarettes that comes out of CSUSF.
 
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zoiDman

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And then there's this from the report itself ...

" ... It is worth noting that although e-cigarette– only users had significantly higher exposure to 5 VOCs, controls also had detectable levels of these chemicals. In fact, human exposure to VOCs from environmental sources is ubiquitous ..."

Definition of ubiquitous

: existing or being everywhere at the same time : constantly encountered : widespread

Yeah... When the Range of the Control Group overlaps with the "Median" of your Results Group (and you choose to Report your Findings using a Median - Which is Questionable In-and-Of Itself) then some would Question if you even have a Control Group?

What, Exactly, is it Controlling?
 

ScottP

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If you think these reports are scary, try reading some unbiased reports about air quality in major metro areas. In many areas just breathing is probably going to cause cancer.

The fundamental truth is we live in a toxic post-industrial world. We get toxins from our food, water, and air on a daily basis. If you want to be 100% toxin free, you are on the WRONG planet.
 

MikeE3

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... air quality in major metro areas ...

Last year when I had a spot show up on my left lung ... there was much testing ... and visit's with multiple specialists. It all turned out to be nothing of concern. When I asked the doc, well what could have caused it. He replied ... who knows, it could have been something you inhaled walking down the city street.
 

Eskie

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Research news Friday

Extreme testing of undiluted e-cigarette aerosol in vitro using an Ames air-agar-interface technique - ScienceDirect

Interesting that under what they regard as extreme test conditions there was no mutagenic effect of vapor from e juice.

Air monitoring at large public electronic cigarette events - ScienceDirect

Not much toxic stuff at a vape meet. Good to know if you attend vape competitions several times a week.

A longitudinal study of electronic cigarette use and onset of conventional cigarette smoking and marijuana use among Mexican adolescents - ScienceDirect

And our usual Debbie Downer, higher conversion of adolescent vapers to cigarettes. Good news not to another plant based smoking material (come on, it's sort of a big part of the article so hard to ignore under forum rules).

Not a terrible week. That conversion stuff will remain a big deal whichever way you look at it.
 

Eskie

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Imo it's a strong argument against restricting flavors. Won't only allowing menthol and tobacco make that conversion even more likely?

It's a possible argument to keep flavors around for juice but not cigarettes. I find it more of an issue that there have been conflicting findings dependant on the data collection methods and statistical analyses as to whether it really is a "gateway" to cigarettes or not. I think the jury is out on that for now.

I do think it's an argument for low to no nicotine combustible tobacco products while allowing for nicotine containing juice as it would greatly decrease the temptation to transition off of vaping to smoking. In my mind the most pragmatic approach is to enforce the age limitations. That would solve the problem if exposure to adolescents never occurs. We don't ban beer and other alcoholic beverages because teens might find a way around the law, and I can't see why such a reasonable approach cannot be extended here.

Let's also recognize the vast number of teen purchases for vaping revolve around cigalikes and pods like Juul that are obtained in the US at convenience stores and gas stations, not vape shops, so enforcement should be focused there if you really intend to limit access to the age group, not concentrate on true vape shops.
 

ScottP

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Something I don't understand, is my Pico 25mm with a Goon RDA on TC setting 450F - I get no temperature cut offs, as I get on DNA75 chip, but it still prevent dry hits...

Some questions that may help answer this question:

What is the Amp rating on the battery you use with the DNA vs the one you use in the Nano? I have seen this behavior with multiple brands of mods and boards using batteries with weaker amp ratings.

What is the resistance of the coil(s) in the Goon and does it read the same on both mods?

Are you locking the resistance on both mods or letting it "free float"?

Is it a DNA 75 or DNA 75C?
 

Winblows

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Some questions that may help answer this question:

What is the Amp rating on the battery you use with the DNA vs the one you use in the Nano? I have seen this behavior with multiple brands of mods and boards using batteries with weaker amp ratings.

What is the resistance of the coil(s) in the Goon and does it read the same on both mods?

Are you locking the resistance on both mods or letting it "free float"?

Is it a DNA 75 or DNA 75C?
The Amp differs between 20-30 (Sony VTC5, Sony VTC5A, LG HG2, LG HB6)

The resistance on the Goon is 0.2ohm (measured on GeekVape 521 Tab Pro).
Two different mods, same resistance reading - NOT possible :)
I lock the resistance, when I TC.

The DNA75 display is black&white :)
 
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ScottP

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Try using the higher amp batts in the DNA and see if that changes things. I had the exact same issue with my VapeForward Vaporflask Lite if I used lower amp batts. As soon as I put higher amp batts in it, it worked perfectly.

I know the reading won't be exact but the difference between the reading on them should be minimal. If one is way off on reading the resistance, there could be a problem, and TC will not work right.
 

capthook

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Hi all and @mikepetro.
An interesting new study just out focusing on the results of e-liquid on live cells:
Evaluation of e-liquid toxicity using an open-source high-throughput screening assay

And includes a searchable data base on flavors/ingredients/chemicals:
TCORS E-Liquid Research and Analysis

The study is very extensive, and while I can wrap my head around most info on at least a basic level, I find much of this a bit over my head, and am unable to read further until this weekend.
An earlier study you posted here, I quoted on how investigating flavors was needed, and the 2nd link seems to be a good start on that.

The toxicity shown of PG/VG alone seems concerning.
And grows with flavors and concentration.
Vanillin was shown to be one of the most toxic of the flavorings.

Would love your take - and others here - on the data.
And/or/also if anyone feels/wants to start another thread on this study, have at it.
It would be poorly served by me. :)
 
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zoiDman

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rollersk4te

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It is impossible to control all parameters in a long term study on vaping, there's far too many combinations to make one. The demands for long term studies will never end, no matter how many and what kind of studies are made. I strongly suggest we don't join that choir.
Actually this is true for ANY study, which is exactly why there's multiple studies done by multiple researchers over a long period of time for the same question/topic. The ideal is that each subsequent researcher will expand and build upon the last researchers research until all the gaps are filled and a concrete conclusion can be made.



Sent from my Z982 using Tapatalk
 

Rossum

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E-cig aerosols were generated using a Sigelei FuChai 200 W device with a Crown stainless steel subtank and a 0.25 Ω SUS316 dual coil from Uwell (City of Industry, CA). Aerosols were generated by activating the E-cig device and drawing into a 100 mL syringe from the mouthpiece of the subtank. Based on existing E-cig topography [5961], we generated 70 mL puffs drawn over 4 s and dispensed with a flow rate of 0.84 L/min at 100 W,
Is it just me or is this strike anyone else as being way too little airflow for 100W ?
 
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