Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
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Observational Study
Exposure to Nicotine and Selected Toxicants in Cigarette Smokers Who Switched to Electronic Cigarettes: A Longitudinal Within-Subjects Observational Study.
Electronic cigarettes (e-cigarettes) are purported to deliver nicotine aerosol without any toxic combustion products present in tobacco smoke. In this longitudinal within-subjects observational study, we evaluated the effects of e-cigarettes on nicotine delivery and exposure to selected carcinogens and toxicants. ⋯ To our knowledge, this is the first study that demonstrates that substituting tobacco cigarettes with an e-cigarette may reduce user exposure to numerous toxicants and carcinogens otherwise present in tobacco cigarettes. Data on reduced exposure to harmful constituents that are present in tobacco cigarettes and e-cigarettes can aid in evaluating e-cigarettes as a potential harm reduction device.
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We sought to assess physician knowledge/beliefs, self-efficacy, and experience/practice patterns surrounding smoking cessation and electronic cigarettes. ⋯ This study documents several important previously poorly characterized aspects of the role of electronic cigarettes in clinical care. The majority of US physicians are discussing electronic cigarettes in clinical contexts and a substantial proportion of US physicians have recommended electronic cigarettes to their patients. The extent of physician engagement on the topic of electronic cigarettes should be met with increased efforts to better characterize electronic cigarettes' appropriate role in smoking cessation and reduction.
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Randomized Controlled Trial
Reduced Exposure to Harmful and Potentially Harmful Smoke Constituents With the Tobacco Heating System 2.1.
Heating rather than burning tobacco reduces levels of harmful and potentially harmful constituents, and consumer products using this approach aim to reduce exposure to tobacco toxicants. The Tobacco Heating System (THS) version 2.1 has been enhanced from earlier prototypes with an improved heat control and sensorial experience and thereby user acceptance. Exposure measurements are required to determine whether it may be possible to reduce the individual health risk compared to smoking combustible cigarettes (CCs). ⋯ Exposure markers to harmful and potentially harmful smoke constituents were lowered with the THS 2.1. Heating tobacco instead of burning can offer a potentially lower risk of delivering nicotine compared to CCs.
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Electronic cigarettes (e-cigarettes) are being used as cessation aids by many smokers despite a lack of empirical evidence regarding their safety and efficacy. We analyzed the association of e-cigarette use and smoking abstinence in a population of smokers accessing standard smoking cessation treatment (nicotine replacement therapy [NRT] plus behavioral counseling) through primary care clinics in Ontario, Canada. ⋯ This study confirms previous findings from observational studies regarding the negative association between e-cigarette use and smoking cessation, but in a large cohort of smokers enrolled in an evidence-based treatment program. The implications of these findings are that concurrent use of e-cigarettes during a quit attempt utilizing cost-free evidence-based treatment (NRT plus behavioral counseling) does not confer any added benefit and may hamper successful quitting.
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Reducing the widespread retail availability of tobacco could help realize tobacco endgame strategies. We assessed New Zealand smokers' perceptions of five potential policies designed to reduce the retail supply of tobacco, relative to a "benchmark" policy of annual tobacco tax increases. ⋯ Tobacco control advocates have proposed a range of policies to reduce tobacco retail outlet density, as part of endgame strategies. There are no published data on the relative effectiveness of different approaches, therefore it is unclear which would be most likely to reduce smoking prevalence. This study provides an insight into smokers' perspectives on the effectiveness of retail reduction strategies and indicates that some of these could be at least as effective in reducing initiation and promoting quitting as tax increases. Smokers' perceptions of the relative effectiveness of these policy options may help inform the advocacy efforts of the sector.