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  • LONG List of Studies on E-Cig Safety:

    Peering Through the Mist: Systematic Review of what the Chemistry of Contaminants in Electronic Cigarettes Tells Us about Health Risks: A comprehensive review, by a Drexel University professor, based on over 9,000 observations of e-cigarette liquid and vapor. He found “no apparent concern” for bystanders exposed to e-cigarette vapor – even under “worst case” assumptions about exposure.

    Scientific Errors in the Tobacco Products Directive: A letter sent by the very scientists whose research was cited by the EU Commission to draft legislation geared towards ecigarettes and their usage. The letter details the many ways in which their research was wrongly used and misinterpreted.

    Contaminants In Ecig Eliquids And Workplace Health Risks (PDF): A study that reviewed available data on chemistry of e cig aerosols and e liquids. This study found no evidence supporting the claims of e cigarette vapor exposure negatively effecting the health, and safety, of  the workplace. Published January 2014.

    A Longitudinal Study Of Ecig Users: This study concludes that electronic cigarettes may hep with preventing the relapses of former smokers and may even help current smokers to quit cigarettes. It also found that dual users, who were still smoking at the point of follow-up, had decreased their tobacco cigarette consumption by 5.3 cigarettes a day. Published January 2014.

    Ecigs Do Not Stiffen Arteries (PDF): Researchers from Onassis Cardiac Surgery Center in Greece have found that while smoking just 2 tobacco cigarettes caused significant stiffening of the aorta, no difference was observed after the use of an e-cigarette by smokers AND vapers. Published December 2013.

    The Importance Of Flavours In Eliquids: A study, headed by Dr. Konstantinos Farsalinos, finds that flavors play a major role in the overall experience of dedicated vapers which supports the hypothesis that flavored e liquids are important contributors in reducing or eliminating the smoking of tobacco cigarettes. Published December 2013.

    Second Hand Vapor Study (PDF): A new study shows that even-though e-cigarettes are a source of second-hand exposure to nicotine; it’s far, far less than that associated with second hand cigarette smoke. Additionally, when tested, e-cigarette second-hand vapor did not contain combustion related toxicants. Lead author was Maciej Goniewic from the Roswell Park Cancer Institute in Buffalo, N.Y. Published in Oxford Journal, December 2013.

    Smoking Kills, and So Might E-Cigarette Regulation: Gilbert Ross MD, is a medical and executive director of the American Council on Science and Health. In this special report on The American, he states “simple common sense would dictate that inhaling the fewer, less harmful ingredients of e-cigarettes as compared to inhaling the thousands of chemicals in the smoke from burnt tobacco, many of which have been shown to be carcinogenic, is highly likely to be healthier.” Published November, 2013.

    Regulation: When Less Is More (PDF): Presentation slides from Clive Bates (of the Counter-factual) concerning the dangers of over-regulating ecigarettes. Mr Bates urges positively about the vast potential about e cigs, to put the (minor) risks in perspective and regulate as though the 1 billion who are predicted to die from tobacco related illnesses in the 21st century matter most. Presented at The E-Cigarette Summit, Royal Society, London in November 2013.

    Research on Safety of Electronic Cigarettes (PDF): Dr. Konstantinos Farsalinos’ comprehensive presentation on existing data relating to the safety of ecigarettes. Presented at The E-Cigarette Summit, Royal Society, London in November 2013.

    Nicotine Safety in the Context of E-Cigarette Use (PDF): Contrary to popular belief, the fatal overdose level for nicotine may be far higher than the generally accepted 50 to 60 mg (adult) says Dr. Jacques Le Houezec. This research was presented at the The E-Cigarette Summit, Royal Society, London in November 2013.

    A Longitudinal Study Of Electronic Cigarette Users: A study of 477 e cigarette users by researchers from the University of Auckland and University of Geneva has arrived at the conclusion that “E-cigarettes may contribute to relapse prevention in former smokers and smoking cessation in current smokers” Published October 2013.

    Ecigs Not A Gateway To Smoking: The study is yet to be published, but according to research presented at the annual meeting of the American Association for Cancer Research (October 2013), the use of e cigarettes by teens does not lead to smoking tobacco in the vast majority of cases.

    E-Liquids Shown To Have Low Cytotoxicity (PDF): The results of testing of 20 e-liquids, has revealed the majority of the vapor samples were found to have no adverse effects on cardiac cells. Even on the several that did have some effect (two of which were tobacco derived), the worst was 3 times less toxic compared to cigarette smoke. Published October 2013 in the International Journal of Environmental Research And Public Health.

    Nicotine Levels Selection and Patterns of Electronic Cigarette Use: Study from Dr. Konstantinos E. Farsalinos that concludes nicotine levels seem to play a crucial role in achieving and maintaining smoking cessation in a group of motivated subjects. The study involved 111 participants who completely substituted smoking with electronic cigarette use for at least 1 month. Published September 2013.

    Vaping: coronary circulation and oxygen supply (PDF): Recent research indicates that electronic cigarette use does not affect the oxygenation of the heart. Lead by principle investigator Dr Konstantinos Farsalinos; results of the research were presented at the European Society of Cardiology annual congress in Amsterdam in August, 2013.

    Eliquids: No Health Concerns: A study by Professor Igor Burstyn of Drexel University School of Public Health based on a review available data has confirmed chemicals generally found in ecig eliquids pose no health concerns. Published August 2013 (PDF).

    MHRA Ecigarette Research: The UK’s Medicines and Healthcare Products Regulatory Agency (MHRA) carried out extensive research on ecigarettes, arriving at the conclusion there was little concern that e-cigarettes can harm users by delivering toxic nicotine levels and little evidence of non-smokers taking up electronic cigarettes. Published in June 2013.

    Efficiency and Safety of an Electronic Cigarette as Tobacco Cigarettes Substitute: In a 12-month trial of ecigarettes to evaluate smoking reduction/abstinence in 300 smokers not intending to quit; complete abstinence from tobacco smoking was documented in 10.7% and 8.7% at week-12 and after a year respectively. For the group receiving the higher dose nicotine cartridges, the tobacco cigarette cessation rate was 13% after a year. The study was published on PLOS One on June 24, 2013.

    Evaluation of Electronic Cigarette Use And Liquid Consumption: This 2013 study challenges an EU proposal that would result in eliquids containing more than 4 milligrams of nicotine per milliliter being banned unless approved as medicinal products. The link above will take you to the International Journal of Environmental Research and Public Health abstract. Commentary from one of the study researchers, Dr Konstantinos Farsalinos, can be viewed here.

    Cytotoxicity evaluation of ecig vapor extract: A 2013 study designed to evaluate the cytotoxic potential of 21 eliquids compared to the effects of cigarette smoke found ecig vapor is significantly less cytotoxic compared to tobacco. At this stage, the study notes are paid-access only, but comments on the study by Dr. Michael Siegel, can be viewed here. Additional commentary from the study’s lead author, Dr Konstantinos Farsalinos, can be accessed here.

    Vaping profiles and preferences: 1,347 vapers were surveyed in an effort to characterize e-cigarette use, users and effects. Results generally showed respondents found ecigarettes to be satisfying to use; cause few side effects; considered healthier than smoking, resulted in improve cough/breathing and lowered levels of craving. The survey was hosted at the University of East London. Published March 2013.

    Ecigarette toxicants study: Levels of selected carcinogens and toxicants in vapour from electronic cigarettes have been found to be 9 to 450 times less than tobacco cigarettes in 12 brands studied; leading the researchers to conclude “substituting tobacco cigarettes with e-cigarettes may substantially reduce exposure to selected tobacco-specific toxicants”. The study was first published online on March 6, 2013.

    Impact of ecigarettes on schizophrenic smokers: Researchers from the CTA-Villa Chiara Psychiatric Rehabilitation Clinic and Research center in Italy determined the use of ecigs decreased tobacco cigarette consumption in schizophrenia sufferers who were smokers – and without significant side effects. Published January 2013.

    Electronic cigarettes: achieving a balanced perspective: This 2012 paper argues that while more research is needed on the cost–benefit of ecigs and appropriate regulation, the harms so far have been overstated relative to the potential benefits. The paper mentions a study that found of more than 2000 former smokers in this survey, 96% reported that the e-cigarette helped them to stop smoking.

    E-cigarette Vapor And Cigarette Smoke Comparison: High nicotine e-liquids were vaporized in a series of experiments and the emissions compared to tobacco smoke. The study results indicate “no apparent risk to human health from e-cigarette emissions based on the compounds analyzed”.

    Is Passive Vaping A Reality?: This study sought to identify and quantify the chemicals released on a closed environment from the use of e-cigarettes – the findings? There’s little to be concerned about with regard safety. This research again confirms the type and quantity of chemicals released are by far less harmful to human health compared to regular tobacco cigarettes. In fact, it “could be more unhealthy to breath air in big cities compared to staying in the same room with someone who is vaping.”

    Indoor Vapor Air Quality Study: Data at Clarkson University’s Center for Air Resources and reviewed by an independent toxicologist indicates electronic cigarettes produce very small exposures to byproducts relative to tobacco cigarettes. The study has been peer reviewed and will appear the Journal of Inhalation Toxicology.

    E-cigarettes: harmless inhaled or exhaled: Report from Health New Zealand stating e-cigarette vapors do not contain substances known to cause death in the quantities found.

    Society for Research on Nicotine and Tobacco (PDF): This research acknowledges that no drug is safe, but the emissions associated with the e-cigarette brand tested appear to be “several magnitudes safer” than tobacco smoke emissions.

    Electronic Cigarettes As a Smoking-Cessation Tool: The findings of this study indicate “e-cigarettes may hold promise as a smoking-cessation method” and that further research should be carried out.

    Electronic Cigarettes Do Not Damage The Heart: Electronic cigarettes appear to have no acute adverse effects on cardiac function according to research by cardiologist Dr Konstantinos Farsalinos.  He says based on currently available data, ecigs are safer and that substituting tobacco with electronic cigarettes could be beneficial to health.

    Principles to Guide AAPHP Tobacco Policy: The American Association of Public Health Physicians recommends electronic cigarettes as a safer smoke-free tobacco/nicotine product.

    Athens University Ecig Study Challenged: Dr. Michael Siegel questions a University of Athens study claiming e-cigarettes can cause lung damage.

    Propylene Glycol Safe: Monkeys and rats were exposed continuously to high concentrations of propylene glycol, a common component of e liquids for periods of 12 to 18 months. Results of the research state “air containing these vapors in amounts up to the saturation point is completely harmless”.

    Effect of ecigs on smoking reduction and cessation: A study showing the use of e cigarettes substantially decreased cigarette consumption without causing significant side effects in smokers who had no intention to quit. Published in 2011 (PDF).