Interesting article and interview....

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TropicalBob

Vaping Master
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Jan 13, 2008
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Port Charlotte, FL USA
I've corresponded with Dr. Laugesen (lead New Zealand researcher) for a magazine article. He's the point man now for research on e-smoking. And his preliminary report is very positive, very encouraging.

But e-smoking is a two-edged sword and I'm trying to examine both edges. I think the findings on nicotine's impact on lung cilia are not in dispute. We'll live with the hopefully insignificant consequence. So we turn to propylene glycol, a generally accepted as safe chemical solution used in everything from cosmetics to medicines. But, uniquely, we INHALE it.

From Dow Chemical's safety information of propylene glycol: "Exposure to mists or artificial fogs may be irritating to the upper respiratory tract and should be avoided."

From Wikipedia: "Inhalation of the propylene glycol vapors appears to present no significant hazard in ordinary applications. However, limited human experience indicates that inhalation of propylene glycol mists could be irritating to some individuals. Therefore inhalation exposure to mists of these materials should be avoided."

The U.S. Environmental Protection Agency has not set standards for inhalation of propylene glycol. That's because no one has ever purposely inhaled propylene glycol vapors regularly and in quantity, as we do with e-smoking.

In another post, SJ suggested researchers might look for another solution in which to suspend the nicotine we crave. I concur. We need a solution that is in no way irritating to the lungs, and, with some further research, might actually prove beneficial in multiple ways, since what enters the lungs is transferred rather easily and quickly to the blood for distribution throughout the body. Our e-smoking could evolve into inhalation therapy.
 

Oliver

ECF Founder, formerly SmokeyJoe
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Absolutely with you on that Bob, the only trouble is that I suspect that it is Propylene Glycol's hygroscopic effect that is responsible for both the ability to create a mist and the irritation that some users are reporting.

For my part, I suffer no obvious side effects but I am certainly keen on knowing what the long term effects of PG are when inhaled.

SJ
 

TropicalBob

Vaping Master
ECF Veteran
Jan 13, 2008
5,623
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Port Charlotte, FL USA
I'm guessing econmics plays a role, too. PG is cheap. If we discovered suspended gold worked as a solution, what good would that do? e-liquid has to be priced attractively. I can live with my little cough, BTW. I'm just sorry it's back. Glad you're symptom-free. I assume most users are, or we'd hear more side effects being reported.
 

EricD

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Mar 30, 2008
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chicago, IL
Yeah, I've read the information stating that PG should not be inhaled. I think in the same information/article, or somewhere else I read, I just can't remember where, that for that reason, use of fog machines at performances and clubs and whatnot should be banned. Geez, my grammar is getting worse and worse the more I post. :lol: I also think another option aside from PG should be investigated. I think that, if e-smoking grows in popularity, other options will be investigated due to general demand. It's encouraging to see you guys are at the forefront confronting these issues. Keep fighting the good fight.
 
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