Vaping and health: some answers, more questions

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Vaping and health: some answers, more questions

As the Centers for Disease Control and Prevention is actively investigating a cluster of severe lung illnesses in 14 states that may be linked to e-cigarette use among adolescents and young adults, an article in the August 15 issue of American Family Physician discusses common questions and answers about vaping and health. Since my colleague Dr. Jennifer Middleton's 2016 blog post on the promise and perils of e-cigarettes, more data has accumulated about the potential harms and benefits of this increasingly common activity. In 2017, one in five high school students reported e-cigarette use in the previous year, leading U.S. Surgeon General Jerome Adams to issue an advisory last year that labeled e-cigarette use in youth a "public health epidemic." More recent data from the Monitoring the Future survey suggested that this epidemic shows no signs of slowing:

Put in historical context, the absolute increases in the prevalence of nicotine vaping among 12th-graders and 10th-graders are the largest ever recorded by Monitoring the Future in the 44 years that it has continuously tracked dozens of substances. These results indicate that the policies in place as of the 2017–2018 school year were not sufficient to stop the spread of nicotine vaping among adolescents.

Although a nationally representative survey of parents of middle and high school students found that nearly all are aware of e-cigarettes, only 44% accurately identified an image of the "pod mod" device Juul; less than one-third reported concerns about their own child's use of e-cigarettes; and nearly three-quarters had received no communication from their child's school regarding the dangers of e-cigarettes. To help clinicians counsel parents and adolescents about vaping and Juuls, a patient education handout accompanying the AFP article highlights important discussion points.

It remains unclear whether e-cigarettes can help adults who are trying to quit smoking. E-cigarettes are not approved by the U.S. Food and Drug Administration as smoking cessation devices; however, a recent randomized trial in the U.K. National Health Service found that in smokers receiving weekly behavioral support, the 1-year abstinence rate in the e-cigarette group was superior to that of smokers using traditional nicotine replacement products. Notably, 80 percent of the e-cigarette group was still vaping after 1 year, compared with only 9 percent of the nicotine-replacement group - a troubling secondary finding given the unknown long-term health consequences of e-cigarette use.

In addition, the AFP article cautions that "unlike nicotine replacement therapy, the advertised nicotine dose on the labeling of e-cigarettes is not always consistent with laboratory analysis of the e-cigarette liquid, and the device and user behavior may affect the dose of nicotine received." Consequently, the authors recommend that clinicians first counsel patients to quit using evidence-based smoking cessation guidelines such as those from the U.S. Preventive Services Task Force, and only discuss using e-cigarettes if these methods are ineffective. In my own practice, I've yet to meet a patient who has successfully quit smoking by switching to e-cigarettes.

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This post first appeared on the AFP Community Blog.


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