Showing posts with label secondhand vapor. Show all posts
Showing posts with label secondhand vapor. Show all posts

Tuesday, March 1, 2016

British Government Tells Smokers & Vapers the Tobacco Truth



While U.S. government health agencies include e-cigarettes in their decades-long attack on tobacco harm reduction and safer tobacco alternatives, public health leaders in Britain are telling the truth about e-cigarettes. 

The UK’s National Centre for Smoking Cessation and Training last week issued e-cigarette recommendations for practitioners and services via a “briefing” document.  As Clive Bates noted (here), it “represents a new worldwide high point in the blending of evidence with empathy in official public health advice.”  Furthermore, it represents a powerful antidote to the dangerous misinformation campaign being waged by the FDA, CDC, NIH and other U.S. agencies and organizations.

The new briefing follows positive British government reports on e-cigarettes issued in 2011 (here), 2014 (here) and 2015 (here).

Britain’s message is clear: “We begin by acknowledging that e-cigarettes are considerably safer than smoking cigarettes, are popular with smokers and that they have a role to play in reducing smoking rates.”  The briefing dispels dark myths that are the staple of tobacco abolitionists, including the shibboleth about nicotine.

“Nicotine does not cause smoking related disease, such as cancers and heart disease. These are caused by other chemicals found in tobacco smoke. Nicotine is addictive however and it is why people continue to smoke despite knowing about the harmful effects of tobacco. Nicotine in e-cigarettes poses little danger to adult users.”
The briefing addresses, in common sense terms, the risk of e-cigarette-related poisoning of children, a subject that is wildly exaggerated in the U.S. (here):

Should health professionals recommend e-cigarettes to smokers?  This is anathema in the U.S.; in Britain, practitioners are encouraged to:

“Familiarise yourself with e-cigarettesBe positive when speaking about e-cigarettes. When you say: ‘We can’t recommend e-cigarettes’, people hear: ‘E-cigarettes are no good’. Instead choose words that convey a positive message such as: ‘We can’t supply them, but we can certainly offer the extra support that will help you stop smoking if you buy your own e cigarette’… Don’t push people to come off their e-cigaretteSome practitioners feel it is important to get people off nicotine as soon as possible, but in fact longer-term e-cigarette use can be a protective factor against relapse back to smoking.” (original emphasis)
 Regarding the chance of exploding e-cigarettes, the briefing advises:
“As with any rechargeable device, like mobile phones and laptops, it is important to charge with the correct charger and not to leave an e-cigarette unattended whilst charging. Ensure that you buy from reputable suppliers and avoid generic charging equipment.”

What about harmful chemicals and secondhand vapor?

“Some studies have detected chemicals in e-cigarette vapour that are known to cause health problems. However, these chemicals have been found at very low levels that are unlikely to represent a serious risk to health. When e-cigarettes are used within normal operating levels (e.g. not overheated), there are far fewer harmful chemicals present in their vapour than in tobacco smoke. If the e-liquid is being overheated it tends to produce an acrid, unpleasant taste – you will know if this happens!...There is no evidence that secondhand vapour is dangerous to others; however, it helps to be respectful when using e-cigarettes around others, especially non-smokers.”

These are only a few examples of the “evidence and empathy” offered in this enlightened British report.  Available here, it should be required reading for all federal, state and local authorities in the U.S.         

Thursday, December 26, 2013

Do E-Cigarettes Cause Passive Vaping?



“Passive smoking” has been hotly contested. Is there a case for “passive vaping”?  Hardly.

A detailed study of e-cigarette vapor by German investigators at the Fraunhofer Wilhelm-Klauditz-Institute’s Department of Material Analysis and Indoor Chemistry detected virtually no quantifiable levels of 20 volatile organic compounds (VOCs) present in cigarette smoke (abstract here).

They had a volunteer smoker puff three e-cigarette liquids and one combustible cigarette in a cramped test chamber measuring about 6 feet cubed.  The volunteer took six, deep 3-second puffs on each item at one-minute intervals; air samples were taken for 15 minutes after the fourth puff.

These are the results for the 20 agents with the highest concentrations. 



Concentrations (ug/m3) of Volatile Organic Compounds (VOCs) in Vapor From Three E-cigarette (Average) and Smoke From a Cigarette
VOCE-cigarette VaporCigarette Smoke
Propylene glycol*112
1-hydroxy-2-propanone *62
2,3-butanedione*21
2,5-dimethylfuran*5
2-butanone219
2-furaldehyde*21
2-methylfurane*19
3-ethenyl-pyridine*24
Acetic acid1368
Acetone2064
Benzene*22
Isoprene*135
Limonene*21
M,p-xylene*18
Phenol*15
Pyrrole*61
Toluene*44
Formaldehyde1286
Acetaldehyde2119
Propanal*12


*Unquantifiable/same as empty chamber

Five VOCs were detected in e-cigarette vapor at minuscule levels.  The level of formaldehyde was similar to that measured before the e-cigarette puffs, leading the investigators to comment that it “…might be caused by the person in the chamber itself, because people are known to exhale formaldehyde in low amounts.”  Acetone and acetaldehyde may have resulted from combustion of propylene glycol during e-cigarette puffing, which also occurs to a larger extent during smoking.  Propylene glycol, a major component of vapor, was not present in the chamber during-after e-cigarette use. 

Although the investigators aimed to identify VOCs “under near-to-real-use conditions to estimate the effect of ‘passive vaping,’” the use of a 6 foot cubed chamber is not real-world.  They answered their title question, “Does E-cigarette Consumption Cause Passive Vaping?” in the affirmative, but these barely measurable results, extrapolated to rooms of normal size, confirm that bystanders have virtually nothing to worry about from vapers.