Perceived Benefits of Electronic Cigarettes Over Traditional Tobacco Products May Lead to Higher Experimentation Rates

New study finds link between common beliefs and e-cigarette use among young adults

Ann Arbor, MI, January 8, 2014

Despite years of anti-smoking education and legislation, tobacco use still remains an important public health issue in the United States. In 2010, 25.2% of all adults and 35.6% of young adults reported current tobacco use. While anti-tobacco efforts continue across the county, the introduction of electronic cigarettes (e-cigarettes) has been marketed as a less harmful alternative to cigarettes and also as a smoking cessation aid.

E-cigarettes supply nicotine through inhaled water vapor. While the addictiveness and long-term effects of using e-cigarettes as a nicotine delivery system are unknown, many people anecdotally believe that they are safer than traditional tobacco products. According to a new study published in the February issue of the American Journal of Preventive Medicine, the belief that e-cigarettes pose less of a health risk may lead to increased experimentation with e-cigarettes among young adults.

Investigators from the Division of Epidemiology and Community Health, University of Minnesota looked at whether or not there was a relationship between perceived notions about the harmfulness of e-cigarettes relative to cigarettes and subsequent e-cigarette use among young adults. Investigators surveyed 1379 participants from the Minnesota Adolescent Community Cohort who had never used e-cigarettes. The initial baseline survey explored their opinions about e-cigarettes and their effect on health relative to cigarettes or their usefulness as an aid to stop smoking. Then, a follow-up survey conducted one year later asked participants if they had experimented with e-cigarettes.

"Participants who agreed e-cigarettes can help people quit smoking and those who agreed that e-cigarettes are less harmful than cigarettes were more likely than those who did not agree to subsequently report experimenting with e-cigarettes. These associations did not vary by gender or smoking status," says study lead author Kelvin Choi, PhD.

Specifically, the follow-up study found that 7.4% of participants who had never used an e-cigarette at baseline reported subsequently using an e-cigarette, with 21.6% among baseline current smokers, 11.9% among baseline former smokers, and 2.9% among baseline nonsmokers reporting use.

"The study showed that 2.9% of baseline nonsmokers in this U.S. regional sample of young adults reported ever using e-cigarettes at follow-up, suggesting an interest in e-cigarettes among nonsmoking young adults," explains Dr. Choi. "This is problematic because young adults are still developing their tobacco use behaviors, and e-cigarettes may introduce young adults to tobacco use, or promote dual use of cigarettes and smokeless tobacco products."

While the risks associated with long-term e-cigarette use are largely unknown, recent studies suggest that they can significantly increase plasma nicotine levels, which means they are potentially as addictive as cigarettes. "This study also suggested that about 12% of former young adults smokers at baseline were re-introduced to nicotine through e-cigarettes. Future prospective studies including adults of all ages are needed to confirm these finding related to e-cigarette use among nonsmokers and former smokers, and to determine the role of e-cigarettes on relapse of smoking," adds Dr. Choi.

This link between beliefs about e-cigarettes and subsequent experimentation can be used to guide future anti-nicotine and anti-smoking campaigns that encompass the new technology of e-cigarettes. "Understanding the specific beliefs that predict subsequent e-cigarette experimentation allows us to focus on these beliefs when designing public health messages," concludes Dr. Choi. "Results from this study suggest that messages about the lack of evidence on e-cigarettes being cessation aids, and the uncertainty of the risks associated with e-cigarette use may discourage young adults, particularly young adult nonsmokers and former smokers, from experimenting with e-cigarettes."

Dr. Choi is currently an investigator at the National Institute on Minority Health and Health Disparities at the National Institutes of Health. This work was done while he was at the University of Minnesota.


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Notes for editors

"Beliefs and Experimentation with Electronic Cigarettes: A Prospective Analysis Among Young Adults," by Kelvin Choi, PhD; Jean L. Forster, PhD, is published in the American Journal of Preventive Medicine, Volume 46, Issue 2 (February 2014), DOI http://dx.doi.org/10.1016/j.amepre.2013.10.007.

Full text of the article is available to credentialed journalists upon request; contact Angela J. Beck at +1 734 764 8775 orajbeck@umich.edu. Journalists wishing to interview the authors should contact the NIMHD Office of Communications and Public Liaison at +1 301 402 1366 or nimhdinfo@mail.nih.gov.

About the American Journal of Preventive Medicine
The American Journal of Preventive Medicine (www.ajpmonline.org) is the official journal of The American College of Preventive Medicine (www.acpm.org) and the Association for Prevention Teaching and Research (http://www.aptrweb.org/). It publishes articles in the areas of prevention research, teaching, practice and policy. Original research is published on interventions aimed at the prevention of chronic and acute disease and the promotion of individual and community health. The journal features papers that address the primary and secondary prevention of important clinical, behavioral and public health issues such as injury and violence, infectious disease, women's health, smoking, sedentary behaviors and physical activity, nutrition, diabetes, obesity, and alcohol and drug abuse. Papers also address educational initiatives aimed at improving the ability of health professionals to provide effective clinical prevention and public health services. The journal also publishes official policy statements from the two co-sponsoring organizations, health services research pertinent to prevention and public health, review articles, media reviews, and editorials.

The American Journal of Preventive Medicine, with an Impact Factor of 3.945, is ranked 15th out of 158 Public, Environmental, and Occupational Health titles and 18th out of 151 General & Internal Medicine titles according to the 2012 Journal Citation Reports® published by Thomson Reuters.

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