UCSF Professor Misleads Dept. of Transportation

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Vocalek

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DOT should prohibit use of e-cigs on airplanes (our public comment) | Center for Tobacco Control Research and Education

The Safe Cig, claims, “Our vapor is so clean that you can exhale directly into a tissue or paper towel and not see or smell a thing!” (www.thesafecig.com). There has been no independent scientific validation of these claims.

Yes there is. I have seen a YouTube video of Big Jim doing that very experiment. I did it myself. It isn't that difficult to do.

But this does give us a suggestion for the next time we need to testify at a public hearing. Exhale vapor into a tissue and pass it around for inspection with eyes and nose.

Nicotine and related compounds, such as B-nicotyrine, anabasine, and myosmine are also present in the products (FDA, 2009; Flouris and Oikonomou, 2010; Trehy et al., 2011).

My, my. The Professor needs to actually READ his references.

FDA Report says: "Screening for the possible tobacco specific impurities cotinine, nicotine-N-oxide, nornicotine, anabasine and myosmine was negative. β-Nicotyrine was detected in all njoy cartridges but was not detected in the Smoking Everywhere cartridges."

Flouris and Oikonomou did not conduct testing of the products. Their article is labeled a Review and it summarized findings from FDA, Greek institute Demokritos (findings were neutral), and Health New Zealand (findings were positive. “The Ruyan e-cigarette is designed to be a safe alternative to smoking, and appears to be safe in absolute terms on all measurements we have applied.”

Trehy et al states, “Myosmine was found at approximately 0.4% of the nicotine concentration while cotinine, anabasine and b-nicotyrine were not detected.”

So what the research actually showed was that β-Nicotyrine was present in njoy vapor and that a totally harmless quantity of Myosamine was found in a brand that nobody in the US buys (CIXI). The independent lab that evaluated the FDA's report stated that β-Nicotyrine has not been shown to be toxic or carcinogenic.

In a summary report of e-cigarette analyses released by FDA on their website, the products contained tobacco specific nitrosamines (NNN, NNK, NAT, NAB) that are carcinogenic, diethylene glycol, and propylene glycol.

The word “carcinogenic” does not appear in the FDA’s lab report. Nor should it, since a a daily exposure of 3 ng. of TSNAs has not been shown to cause cancer. [Health New Zealand found 8 ng/g in the lqiuid, but an independent lab that looked at the TSNAs in NJOY vapor found only one type (the least harmful) and only 3 ng. of that.] http://www.casaa.org/files/Study_TSNAs_in_NJOY_Vapor.pdf


In fact, snus user are exposed to daily TSNA doses of 2000 ng or more and do not develop cancer. BioMed Central | Full text | Systematic review of the relation between smokeless tobacco and cancer in Europe and North America

DEG was found at 1% in one cartridge (approximately 10 mg--not enough to make a mouse sick. The NOAEL is 850-1000 mg/kg/ bw/d.) The FDA did not bother to mention propylene glycol, probably becuase it is generally recognized as safe. Cheap trick, Professor, putting an item that is safe in a list of potentially unsafe things to make things look worse.

Nicotine is a neurotoxin (Abreu-Villaca et al., 2003) used as an insecticide (American Lung Association, nd).

Well, at 40% concentration nicotine is an insecticide, but not at ~2%! And let's forget to mention that treatments for Alzheimers, Parkinsons, and other conditions are being developed based on nicotine's effects in the body. There are many substances that have a beneficial effect at lower doses but which are neurotoxic at high doses. I give you -- caffeine. Yet the professor isn't calling for a ban on coffeee, tea, and cola on planes.

There is also concern about possible contamination from the nicotine solution used in e-cigarettes (Cobb et al., 2010). Some of these devices are refillable, raising the possibility of spillage of the concentrated nicotine solution used to fill e-cigarettes.

There's no evidence that spilled liquid has ever harmed anyone. Personally, I'm more afraid of breaking one of the new lightbulbs that contain mercury. Nevertheless, it would be wise to fill up your cartridges before you get onto the plane, just to avoid a general panic.

These concerns are heightened by the facts that these potentially toxic products are not regulated by any federal agency at this time and that there is evidence of poor quality control (Flouris and Oikonomou, 2010), meaning that there may be other chemicals emitted into the air.

Again he cites Flouris and Oilonomou, who simply reviewed other lab reports and did not conduct any testing of their own.

There's more, but that's all I can stomach for now.
 
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