A recent study conducted by the University of New South Wales in Sydney has raised growing concerns about nicotine-containing e-cigarettes, suggesting a potential link between their use and an increased risk of lung and oral cancers, amid ongoing scientific debate about their long-term health effects.
According to scientific sources, this research is among the most comprehensive efforts to date aimed at determining whether vaping itself can cause cancer independently of traditional tobacco smoking. The analysis combined clinical studies, animal experiments, and laboratory research examining the chemicals produced by e-cigarette devices.
E-cigarettes, first introduced in the early 2000s and widely marketed as a safer alternative to conventional cigarettes and a potential smoking cessation aid, have seen rapid global adoption. However, their widespread popularity—especially among younger populations—has raised increasing public health and regulatory concerns.
The study identifies several carcinogenic compounds in e-cigarette vapor, including volatile organic compounds and metals released from heating coils. These substances may have long-term biological effects on cells and tissues.
Researchers also analyzed biomarkers in users showing signs of DNA damage, oxidative stress, and tissue inflammation. Animal studies demonstrated the development of lung tumors, while laboratory experiments revealed cellular damage and disruptions in cancer-related biological pathways.
By integrating findings across multiple domains, the researchers concluded that the evidence points in a consistent direction, although long-term human studies will require decades to fully quantify the risks.
The study also highlights the issue of “dual use,” where many individuals attempting to quit smoking through vaping end up continuing both habits. This pattern may undermine potential health benefits and increase overall exposure to harmful substances.
Additionally, epidemiological data from the United States suggests that individuals who both smoke and vape may face a significantly higher risk of lung cancer compared to non-users, reinforcing concerns about combined usage patterns.
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