Studies Show Vaping After Quitting Smoking Carries Health Risks, But Remains Safer Than Continued Smoking
A large South Korean study found that ex-smokers who vape have a 56% higher risk of lung cancer compared to those who quit completely, while the FDA approved fruit-flavored e-cigarettes despite data showing they offer no significant advantage over tobacco-flavored versions. Both findings underscore that while vaping is less harmful than smoking, it is not risk-free and complete cessation of all nicotine products remains the safest option. The research highlights ongoing questions about e-cigarette safety and regulatory decisions as vaping becomes more common among people attempting to quit smoking.
A study of 4.5 million South Korean smokers tracked from 2018 to 2023 found that ex-smokers who continued vaping had a 56% higher risk of lung cancer death compared to those who quit smoking entirely, though the risk remained substantially lower than for current smokers. The research identified several biological mechanisms potentially linking vaping to cancer risk, including DNA damage, oxidative stress, and inflammation in respiratory tissue. Separately, the FDA recently approved fruit-flavored e-cigarettes as a less-harmful alternative to traditional cigarettes, but an agency memo revealed that the approved products showed no statistically significant advantage over tobacco-flavored versions in helping smokers quit. Experts emphasize that while these findings raise concerns about vaping's long-term safety, quitting smoking—even with e-cigarette assistance—remains far safer than continued smoking, and complete cessation of all nicotine products offers the greatest protection. The studies underscore the need for longer-term research and more cautious regulatory approaches to e-cigarette authorization.
What's missing
The New Scientist article notes that the South Korean study could not prove causation and that further research outside South Korea is needed; the study's reliance on self-reported vaping use and potential confounding variables are not explicitly discussed in either source.
What different sources said
- AP NewsCenter
FDA’s e-cigarette authorization: Fruity vapes not significantly better than tobacco ones
- New ScientistCenter
Ditching cigarettes for vapes may curb the cancer benefits of quitting
- FortuneCenter
Why is the FDA approving kid-friendly, fruit-flavored e-cigarettes?
- Washington TimesRight
FDA's e-cigarette authorization: Fruity vapes not significantly better than tobacco ones
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