Vaping e-cigarettes with high amounts of nicotine appears to impact how often and how heavily teens smoke and vape in the future, a new study finds.
In 2016, an estimated 11 percent of U.S. high school students used e-cigarettes. Past research has found that that teen vaping can lead to smoking (SN: 9/19/15, p. 14). The new study, published online October 23 in JAMA Pediatrics, is the first look at whether vaping higher amounts of nicotine is associated with more frequent and more intense vaping and cigarette use in the future.
Researchers at the University of Southern California surveyed 181 10th-graders from 10 high schools in the Los Angeles area who had reported vaping in the previous 30 days, then followed up six months later, when the students were 11th-graders. The teens answered questions about how much and how often they had smoked and vaped in the past 30 days and about the amount of nicotine in their vaping liquid. The researchers categorized the amount of nicotine as none, low (up to 5 milligrams per milliliter), medium (6 to 17 mg/mL) or high (18 mg/mL or more).