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Peering through the mist: systematic review of what the chemistry of contaminants in electronic cigarettes tells us about health risks.

ABSTRACT: BACKGROUND: Electronic cigarettes (e-cigarettes) are generally recognized as a safer alternative to combusted tobacco products, but there are conflicting claims about the degree to which these products warrant concern for the health of the vapers (e-cigarette users). This paper reviews available data on chemistry of aerosols and liquids of electronic cigarettes and compares modeled exposure of vapers with occupational safety standards. METHODS: Both peer-reviewed and "grey" literature were accessed and more than 9,000 observations of highly variable quality were extracted. Comparisons to the most universally recognized workplace exposure standards, Threshold Limit Values (TLVs), were conducted under "worst case" assumptions about both chemical content of aerosol and liquids as well as behavior of vapers. RESULTS: There was no evidence of potential for exposures of e-cigarette users to contaminants that are associated with risk to health at a level that would warrant attention if it were an involuntary workplace exposures. The vast majority of predicted exposures are?

SUBMITTER: Burstyn I

PROVIDER: S-EPMC3937158 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Peering through the mist: systematic review of what the chemistry of contaminants in electronic cigarettes tells us about health risks.

Burstyn Igor I

BMC public health 20140109

<h4>Background</h4>Electronic cigarettes (e-cigarettes) are generally recognized as a safer alternative to combusted tobacco products, but there are conflicting claims about the degree to which these products warrant concern for the health of the vapers (e-cigarette users). This paper reviews available data on chemistry of aerosols and liquids of electronic cigarettes and compares modeled exposure of vapers with occupational safety standards.<h4>Methods</h4>Both peer-reviewed and "grey" literatu ...[more]

PMID: 24406205

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Project description:Introduction:Young adults are rapidly adopting electronic cigarette (e-cigarette) use. The popularity of e-cigarettes among young people can be attributed to heavy industry advertising and misleading health claims. Data indicate that young e-cigarette users who have never used conventional cigarettes may transition toward smoking combustible cigarettes. Communicating e-cigarette risks via text messaging is limited. This pilot study assessed the impact of exposure to 16 text messages on e-cigarette knowledge and risk perception. The short text messages delivered to participants conveyed e-cigarette use may lead to addiction to nicotine and explained the latest health-related findings. Methods:A two-group randomized pretest and posttest study was conducted among 95 racially, ethnically diverse young adults recruited from vocational training programs. Fifty percent of participants were randomized to receive either gain- or loss-framed messages. Knowledge and risk perceptions about e-cigarettes and tobacco use were assessed pre- and post-message exposure. Results:Participants had a mean age of 20.8?years, SD?=?1.7. Current use of e-cigarettes was reported by 10.5% (10/95) and 27.4% (26/95) used a variety of other tobacco products. Findings revealed significant increases in knowledge about e-cigarettes after exposure to the messages (range for ps: p?<?04 to p?<?0.0001). A statistically significant increase in perceived e-cigarette risk was found post-exposure (p?=?0.002). Participants randomized to gain-framed messages reported a significantly higher perceived risk of using e-cigarettes post-exposure than did those who received loss-framed messages (p?=?0.02). Conclusions:This was a small-scale pilot requiring additional evidence to support the effectiveness of text messaging for increasing e-cigarette knowledge and risk perception. Future research may apply text messages to test new ways to educate young populations about tobacco use and consider addressing these messages to specific subgroups at high risk of use such as non-college bound young adults.

Project description:IntroductionThe objective of this study is review the evidence on the health risks associated with smoking kretek cigarettes compared with not smoking or smoking regular cigarettes.MethodsWe conducted a systematic literature search in five electronic databases: EMBASE (Ovid), ASSIA, PubMed and Scopus. Since kretek use is largely restricted to Indonesia, we identified additional studies using an online search for grey literature and studies in Indonesian journals and the National Library of Indonesia. We included relevant search terms in English ("kretek" and "clove cigarettes") and Bahasa ("rokok" and "merokok"). We selected studies which compared any health outcome between smokers of kretek cigarettes and non-smokers or smokers of regular cigarettes. We included studies in any smokers compared to non-smokers in Indonesia, since most Indonesian smokers use kretek, but analysed these separately. Study data were extracted by a single reviewer and checked by two reviewers. Methodological quality was assessed using the Newcastle-Ottawa scale.ResultsWe identified 32 studies, all from Indonesia. There were 31 cross-sectional studies and one case control study. This systematic review identified a relatively limited number of studies, and most of these were of poor quality as assessed by the Newcastle Ottawa score. They were generally cross-sectional, small and lacking justification for sample size, had high potential for selection bias because of lack of data on non-respondents or those lost to follow up, and missing information about the statistical analysis. Fourteen studies looked specifically at kretek exposure and eighteen looked at any type of cigarette exposure but were conducted in Indonesia are therefore likely to predominantly reflect kretek exposure. Kretek were found to be associated with oral cancer, cardiovascular disease, chronic health disease, myocardial infarction, asthma, and oral diseases.ConclusionsAlthough existing studies are of poor quality, kretek are likely to be at least as harmful as regular cigarettes.

Project description:BackgroundElectronic cigarettes (e-cigarettes) have been widely promoted on the internet, and subsequently, social media has been used as an important informative platform by e-cigarette users. Beliefs and knowledge expressed on social media platforms have largely influenced e-cigarette uptake, the decision to switch from conventional smoking to e-cigarette smoking, and positive and negative connotations associated with e-cigarettes. Despite this, there is a gap in our knowledge of people's perceptions and sentiments on e-cigarettes as depicted on social media platforms.ObjectiveThis study aimed to (1) provide an overview of studies examining the perceptions and sentiments associated with e-cigarettes on social media platforms and online discussion forums, (2) explore people's perceptions of e-cigarette therein, and (3) examine the methodological limitations and gaps of the included studies.MethodsSearches in major electronic databases, including PubMed, Cumulative Index of Nursing and Allied Health Literature, EMBASE, Web of Science, and Communication and Mass Media Complete, were conducted using the following search terms: "electronic cigarette," "electronic vaporizer," "electronic nicotine," and "electronic nicotine delivery systems" combined with "internet," "social media," and "internet use." The studies were selected if they examined participants' perceptions and sentiments of e-cigarettes on online forums or social media platforms during the 2007-2017 period.ResultsA total of 21 articles were included. A total of 20 different social media platforms and online discussion forums were identified. A real-time snapshot and characteristics of sentiments, personal experience, and perceptions toward e-cigarettes on social media platforms and online forums were identified. Common topics regarding e-cigarettes included positive and negative health effects, testimony by current users, potential risks, benefits, regulations associated with e-cigarettes, and attitude toward them as smoking cessation aids.ConclusionsAlthough perceptions among social media users were mixed, there were more positive sentiments expressed than negative ones. This study particularly adds to our understanding of current trends in the popularity of and attitude toward e-cigarettes among social media users. In addition, this study identified conflicting perceptions about e-cigarettes among social media users. This suggests that accurate and up-to-date information on the benefits and risks of e-cigarettes needs to be disseminated to current and potential e-cigarette users via social media platforms, which can serve as important educational channels. Future research can explore the efficacy of social media-based interventions that deliver appropriate information (eg, general facts, benefits, and risks) about e-cigarettes.Trial registrationPROSPERO CRD42019121611; https://tinyurl.com/yfr27uxs.

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Peering through the mist: systematic review of what the chemistry of contaminants in electronic cigarettes tells us about health risks.

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Peering through the mist: systematic review of what the chemistry of contaminants in electronic cigarettes tells us about health risks.

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