Across the American landscape of small screens and shared sidewalks, a generation of young adults has quietly drifted toward devices that carry far more nicotine than the vapes of only a few years ago. Researchers at UC San Diego, reading the long national record kept by the PATH Study, found that by 2022 nearly half of daily vapers aged 18 to 24 were using products at or above 4% strength, compared with barely three percent in 2017. The story is less about a single product than about a familiar human pattern: when a stronger pull arrives in an attractive package, the young are often the first
High-Nicotine Vapes Linked to Rising Dependence and Lower Quit Rates Among Young Adults
A new generation of people who are dependent on nicotine
Mark
The headline number is 49.2%. What's the comparison that makes it land?
Mimi
Daily vapers aged 55 and older, where it's 4.5%. Same kind of user, a tenfold-plus gap by age. And in 2017 the young adult figure was 3.1%.
Mark
So it rose fast.
Mimi
Most of it came early: 3.1% to 40.1% by 2019, then up to 49.2% in 2022.
Luke
Worth noting that 49.2% is among daily vapers, not all young adults. It describes a subset.
Mark
The dependence finding seems the most striking one.
Mimi
Exclusive young vapers in 2022 scored like exclusive cigarette smokers did in 2017. That's the comparison the authors draw.
Luke
But it's a comparison across different years and groups. It shows a pattern, not that the vape strength caused it.
Mark
And the 31% lower odds of quitting?
Mimi
That's among people who vaped in 2019 and were checked four years later. Overall, 40.9% had quit by 2022.
Luke
The authors say themselves it's observational. Causation isn't proven. Also, many people didn't know their nicotine percentage early on, which the researchers say probably made estimates conservative. That's their judgment, not something we can verify here.
Mark
What about marketing?
Mimi
Young adults chose stronger versions even within the same brands as older adults. The authors raise influencer campaigns as a question.
Luke
A question, yes. The study doesn't show marketing drove those choices.
Le Pouls
- Nearly half of young daily vapers now use devices with at least 4% nicotine, a jump from roughly 3% in 2017 that has unsettled public health researchers.
- Young exclusive vapers have reached nicotine dependence levels once seen only among cigarette smokers of 2017, raising alarm about a new wave of addiction.
- High-nicotine users were 31% less likely to have quit vaping four years later, tightening the pressure on people trying to break free.
- Researchers are pressing regulators to reassess the assumptions behind FDA authorizations, even as the observational data leaves causation open to debate.
Across the American landscape of small screens and shared sidewalks, a generation of young adults has quietly drifted toward devices that carry far more nicotine than the vapes of only a few years ago. Researchers at UC San Diego, reading the long national record kept by the PATH Study, found that by 2022 nearly half of daily vapers aged 18 to 24 were using products at or above 4% strength, compared with barely three percent in 2017. The story is less about a single product than about a familiar human pattern: when a stronger pull arrives in an attractive package, the young are often the first to lean into it, and the habit that follows can outlast the moment that started it. The authors are careful to note that observation alone cannot settle every question of cause, yet they ask whether the public promise made when these products were authorized still holds.
By 2022, close to half of American young adults who vaped every day were using devices with at least 4% nicotine. Among daily vapers aged 18 to 24, the figure stood at 49.2%, a climb from just 3.1% in 2017. Among those aged 55 and older, the share was only 4.5%.
Researchers at the Herbert Wertheim School of Public Health and Human Longevity Science at UC San Diego drew on the nationally representative PATH Study, tracking survey rounds from 2017 to 2022 and following 2,356 adult vapers over those years. The shift was steep, and it carried dependence with it. Young exclusive vapers, who in 2017 were less dependent than cigarette smokers, had by 2022 reached the same dependence levels as exclusive smokers of that earlier year.
Higher nicotine strength also made quitting harder across every age group. Those using high-nicotine products had 31% lower odds of being abstinent four years on. The young picked stronger versions more often than older adults even within the same brands, a pattern the authors linked to marketing, including influencer campaigns on social media.
Senior author John P. Pierce argued that the FDA's authorization of these products rested partly on the expectation that benefits to adult smokers would outweigh new dependence among youth. The findings, he said, suggest that balance must be reassessed. The authors also acknowledged that the observational design cannot prove causation, and that many respondents did not know their products' nicotine levels, which they believe makes the estimates conservative. The next task, Pierce said, is understanding how nicotine content, design and marketing shape long-term use.
By 2022, close to half of the young adults in the United States who vaped every day were using devices with at least 4% nicotine. The figure is 49.2% among daily vapers aged 18 to 24, according to a study in the journal Tobacco Control. Among daily vapers aged 55 and older, it is 4.5%.
The analysis comes from researchers at the Herbert Wertheim School of Public Health and Human Longevity Science at UC San Diego. They drew on the Population Assessment of Tobacco and Health (PATH) Study, a nationally representative US dataset on tobacco and nicotine use. They examined survey rounds from 2017, 2019, 2021 and 2022, and also followed 2,356 adult vapers from 2019 through 2022.
The change over time is steep. In 2017, fewer than 4% of people who vaped reported using products at that strength. Among daily vapers aged 18 to 24, the share went from 3.1% in 2017 to 40.1% in 2019, then to 49.2% in 2022. In 2022, the share was 32.8% for daily vapers aged 25 to 34 and 17.6% for those aged 35 to 54. Among everyone who vaped that year, the odds of choosing a high-nicotine product were 12 times higher for 18- to 24-year-olds than for people 55 and older.
Dependence moved with it. In 2017, young adults aged 18 to 24 who vaped exclusively had lower nicotine dependence scores than their peers who smoked conventional cigarettes. By 2022, the scores of those exclusive vapers had climbed to the level of exclusive cigarette smokers in 2017.
The study also looked at quitting. Higher nicotine strength was tied to more difficulty quitting across all age groups. Among people who vaped in 2019, those using high-nicotine products had 31% lower odds of being abstinent from vaping four years later. In the whole cohort followed from 2019, 40.9% had achieved abstinence by 2022.
The researchers noted that 18- to 24-year-olds picked higher-nicotine versions more often than older adults even within the same brands. That raises questions, they said, about marketing, including influencer campaigns on social media.
John P. Pierce, PhD, the senior author and a professor at the school, tied the findings to the FDA's authorization of these products. He said the authorization rested partly on the expectation that benefits to adults who smoke would outweigh the risk of creating new nicotine dependence among young people. "Our findings suggest that this balance needs to be reassessed," he said. He added that the data document how high-nicotine products have created a new generation of people dependent on nicotine.
The authors acknowledged limits. The analysis is observational, so it cannot prove that high-nicotine products cause greater dependence or lower quit rates. Many respondents, especially in the first two survey years, did not know the nicotine percentage of their products. The researchers said this likely made their estimates more conservative.
The study concludes that these patterns raise doubts about whether high-nicotine e-cigarettes meet the public health standard the FDA applies to marketing authorizations. Pierce said the next task is understanding how nicotine content, product design and the marketing environment shape long-term use.
Citations marquantes
The balance of benefits to adults who smoke against the risk of new dependence among young people needs to be reassessed.— John P. Pierce, PhD, senior author, UC San Diego
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