Harvard study DATA shows Avg Diacetyl Exposure from Vaping 750 Times Lower than Smoking

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David Wolf

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The actual DATA in the Harvard study indicates more good news than bad, most flavors were very low in DAP, and FAR lower Diacetyl was found in the average whole ecigarette cartridge than in just ONE cigarette. Dr. Michael Siegel puts forth the facts here:
The Rest of the Story: Tobacco News Analysis and Commentary: New Study Finds that Average Diacetyl Exposure from Vaping is 750 Times Lower than from Smoking

The Harvard study is a case of how to spin the test results, the Harvard write-up is a farce with no comparisons to smoking at all, which would indicate that vaping has far less of the substances they show concern with than smoking, and therefore a better alternative. You know you're in for some "spin" when the authors of the study indicate that one of the factors in choosing flavors are those "we consider to be potentially appealing to children, teenagers, and young adults." Children? Who sells to children, and who lets their children vape - this is just more anti-vaping rhetoric.

But see for yourself, look at the table 2 data at the end of the Harvard study (total mass for one cartridge of each flavor, roughly equivalent to a pack of cigarettes), and compare to the shrill write-up in the full paper I have linked to below:
http://ehp.niehs.nih.gov/wp-content/uploads/advpub/2015/12/ehp.1510185.acco.pdf

As Dr. Siegel states in his blog linked above:
"Fujioka and Shibamoto conducted a study to measure the diacetyl exposure from active smoking. They found that the average diacetyl content of the cigarettes tested was 335.9 micrograms per cigarette. Assuming that a smoker consumes one pack per day (20 cigarettes), the average daily inhaled does of diacetyl associated with smoking is therefore 6718 micrograms."

The results in the Harvard study are typical of many test results we have already seen. The only difference is that the misleading HYPE - the paper serves as an example of how to distort the findings to put forth a cause by omitting comparisons to smoking or noting that for most e cigarette flavors DAP concentrations were extremely low or below detectable levels.

Note to moderators - I have posted this in the general vaping thread to make sure as many people see it as possible. Right now, the only place I could find where Dr. Siegels blog post was buried down in another thread, and I think it deserves a title thread. Please consider leaving this where it as at least for a little while, for maximum exposure, before moving to a more appropriate location, thanks.
 
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Douggro

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Go back and read page 2 of the report. Their stated objective never was to compare the levels of diacetyl exposure to cigarettes or anything else, just to look for it in the samples they tested. On that count, they succeeded. The contentious issue for us comes in their conclusion of the study results, since they were only looking for evidence of the presence of diacetyl compounds rather than if the levels of those compounds found posed an indicated risk.

From the study:
"Conclusion: Due to the associations between diacetyl, bronchiolitis obliterans and other severe respiratory diseases observed in workers, urgent action is recommended to further evaluate this potentially widespread exposure via flavored e-cigarettes."
So it would seem there is an implied perception on their part that the detectable presence of any diacetyl compounds are a Bad Thing, and therefore exposure to e-cigs and e-juices are somehow potentially as dangerous as being a worker in a popcorn factory or any other facility were diacetyl is used. There is some evidence that contradicts that supposition, particularly as it relates to the levels of diacetyl compounds in cigarettes and the absence of diacetyl-related illness in cigarette smokers.

I use this analogy again: if we tested for the presence of fish urine and feces in water from lakes, ponds, streams and the ocean, there's a fair chance we would find it. Does that make it unsafe to swim in? Doesn't matter, if we're only looking for the presence of it.

There are things about this study, however, that reek of shill science for aggrandizement of the publishers. Boy, it succeeded on that count.
 

crxess

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Go back and read page 2 of the report. Their stated objective never was to compare the levels of diacetyl exposure to cigarettes or anything else, just to look for it in the samples they tested. On that count, they succeeded. The contentious issue for us comes in their conclusion of the study results, since they were only looking for evidence of the presence of diacetyl compounds rather than if the levels of those compounds found posed an indicated risk.

From the study:
"Conclusion: Due to the associations between diacetyl, bronchiolitis obliterans and other severe respiratory diseases observed in workers, urgent action is recommended to further evaluate this potentially widespread exposure via flavored e-cigarettes."
So it would seem there is an implied perception on their part that the detectable presence of any diacetyl compounds are a Bad Thing, and therefore exposure to e-cigs and e-juices are somehow potentially as dangerous as being a worker in a popcorn factory or any other facility were diacetyl is used. There is some evidence that contradicts that supposition, particularly as it relates to the levels of diacetyl compounds in cigarettes and the absence of diacetyl-related illness in cigarette smokers.

I use this analogy again: if we tested for the presence of fish urine and feces in water from lakes, ponds, streams and the ocean, there's a fair chance we would find it. Does that make it unsafe to swim in? Doesn't matter, if we're only looking for the presence of it.

There are things about this study, however, that reek of shill science for aggrandizement of the publishers. Boy, it succeeded on that count.

Guess they will be trying to Regulate people next. We produce Diacetyl in sweat. :glare:
 

Steamix

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Now, will this go Viral........Will it be passed all over Facebook like the Shill story? :facepalm:

Nope.

Not sensationalist enough.

Allegations/accusations are always headlines. The corrections/apologies are found two days later somehwere between the classifieds and the obituaries...

If you want to get shared, use the same dirty spin doctoring:

"Harvard's loosing it"

"Top unviersity published falsified research"

"Leading campu entangled in smear campaign"

Be creative ... and adding a question mark at the end of each headline keeps the lawyers at bay :)
 

Douggro

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Not sensationalist enough.

Allegations/accusations are always headlines. The corrections/apologies are found two days later somehwere between the classifieds and the obituaries...
"Harvard's Secret Agenda Against E-cigs and Vapers?"
"Harvard Team Uses Federal Funds For Shady Science?"
"Data Spinning, the Harvard Way?"
"Harvard Selling Out To Big Tobacco In Fight Against E-cig Competition?"
 

David Wolf

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In a discussion with @Rossum in another thread regarding the study, I want to point out here that I am a believer in ejuice testing, and personally do not vape flavors with high levels of DAP except for on occasion a little custard:p. My primary go to is unflavored 18 mg nic base from Nude Nicotine, and often add light flavoring, and some light amount of NET's. WIthout vaping, I never could have quit smoking which was harming my health. My first hand evidence proved to me that vaping is far better than smoking - it's been a year now, and my health is much improved vaping (in fact after only a few days it was better).

Still we should make informed choices on our juices, and here are some additional test results from Vaporshark which many have seen, but others may not have - note that at least some of the vendors/flavors here have apparently been reformulated, if you go to the juice makers website you may see test results they have posted showing much improved test results:
VaporShark E-Liquid Testing.pdf
 
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