Interesting site ref e-cigs (research being done etc.)

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Harry Crazington

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Jan 13, 2009
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I found the site very informative and interesting
Yes very good find Mpetva.
As far as the safety of inhaling ejuice vapor they say...

Are they really safer than regular cigarettes? -Yes.
Though we are uncertain as to how safe they are, we are fairly sure that they are safer than smoking cigarettes. Part of our certainty derives from knowing how harmful regular smoking is. Almost anything is certain to be safer.
Almost anything else that is not acutely toxic (and we know the e-cigs are not) will be safer. Even if e-cigs are about ten times as harmful as smokeless tobacco, that still makes them about 1/10th as harmful as smoking. Smoking is just that bad.
First of all, there is no burning of any plant matter so all those combustion related carcinogens are no longer present. Of course, in most cases, nicotine is still present but, as we've written elsewhere, nicotine is one of the more benign elements in tobacco. All that remains is some uncertainty about the effects of propylene glycol with long term regular use.

Well several websites have posted problems and effects of long term exposures to PG based theater fog inhalation, and that's equivalent to second hand smoke compared to inhaling an eCigs vapor directly into the lungs. Here's one.
Adverse effects on respiratory health
Although often believed to be safe to breathe, exposure to mineral oil, glycol and glycerin-based theatrical fogs produced from fog or haze machines have been associated with adverse short and long-term effects on respiratory health in exposed performers and crew members, especially those with respiratory problems (such as asthma). One should therefore avoid breathing generated smoke or fog. It is safer to add smoke effects digitally in postproduction of films than to use theatrical smokes on set. Glycol-based fog is associated with headaches, dizziness, drowsiness and tiredness in those exposed. These results would be expected given that glycols share some chemical similarities to alcohols and given the small size of fog particles making it easy for them to enter the bloodstream. Symptoms of wheezing and chest tightness were associated with longterm exposure to theatrical smoke and fogs.

Dry ice smoke machines, on the other hand, create a safe to breath fog composed of carbon dioxide gas. The only adverse health effects would stem from the displacement of oxygen leading to asphyxiation. However, in well ventilated areas, a dry ice fog machine poses no short- or long-term health effects.

http://www.absoluteastronomy.com/topics/Fog_machine
http://livedesignonline.com/mag/show_business_fog_safety_concern/
Fog Tip
Fog and Smoke | Chicago Artists Resource


 
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