Study links vaping to higher lung cancer risk than quitting smoking
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A large study published in Nature on June 14 found that people who switched from cigarettes to e-cigarettes had a higher lung cancer risk than those who quit smoking entirely. The findings challenge the common assumption that vaping is a safer alternative.
The Study Design
Researchers analyzed data from over 1.2 million participants across multiple cohorts. The study compared lung cancer incidence among exclusive smokers, exclusive vapers, dual users, and those who quit nicotine entirely. Follow-up periods ranged from 5 to 15 years.
Key Findings
Former smokers who switched to vaping had a 20% higher lung cancer risk compared to those who quit nicotine completely. Dual users faced the highest risk, 40% above that of exclusive smokers. The study controlled for age, sex, smoking history, and socioeconomic status.
Public Health Implications
The findings complicate harm-reduction strategies that promote vaping as a cessation tool. Public Health England and other agencies have previously endorsed e-cigarettes as 95% less harmful than smoking. The study's authors call for updated regulatory guidelines.
Vaping and Heart Failure Risk
A new study has linked vaping to a higher risk of heart failure. The research, reported by KOAT, adds to growing evidence of cardiovascular dangers associated with e-cigarette use.
DNA Changes in Cheek Cells
University College London analyzed cheek cells from vapers and smokers and found similar DNA changes in both groups. The study suggests that vaping may cause cellular alterations linked to cancer risk.
What's Next
The World Health Organization is expected to review the study at its next tobacco control meeting in September. It remains unclear whether national health agencies will revise their vaping recommendations based on these results.
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Study links vaping to higher lung cancer risk than quitting smoking
