Recent research has revealed alarming early indicators of cancer risk associated with vaping, including DNA damage and inflammation. A comprehensive review led by the University of New South Wales in Sydney suggests that the use of e-cigarettes is likely to contribute to the development of lung and oral cancers, prompting calls for immediate regulatory action rather than waiting decades for conclusive evidence.
Significant Findings from Recent Research
The study, detailed in the journal *Carcinogenesis*, draws on a wide range of evidence from animal studies, human case reports, and laboratory research conducted between 2017 and 2025. Co-author Adjunct Professor Bernard Stewart emphasized that vaping alters the cells and tissues within the oral cavity and lungs, marking concerning pre-carcinogenic changes.
Stewart stated, “There is no doubt that the cells and tissues of the oral cavity, the mouth and the lungs are altered by inhalation from e-cigarettes.” Although modern e-cigarettes have only been around since the early 2000s, the review highlights significant biological changes that are known precursors to cancer.
The Challenge of Determining Risk
Due to the relatively short history of e-cigarette use, there is a lack of long-term data regarding its cancer risk among large populations. Many individuals who vape also smoke traditional cigarettes, complicating the task of isolating the specific effects of vaping. As a result, the researchers did not attempt to quantify the exact number of cancer cases that may arise from vaping. Instead, the focus was on assessing the biological changes associated with e-cigarette use.
Notably, the review included case reports from dental professionals who observed instances of oral cancer in individuals who exclusively vaped and had never smoked. Animal studies further supported these findings; one study indicated that mice exposed to e-cigarette vapour developed lung tumours at higher rates than their unexposed counterparts.
Calls for Immediate Regulatory Action
The lead author of the study, Associate Professor Freddy Sitas, cautioned against the complacency that characterised the recognition of smoking as a health hazard, which took over a century to solidify. He noted, “We risk repeating that same fate with vaping if we don’t take emerging research and warning signs seriously.”
Calvin Cochran, a public health research fellow at the University of Otago, echoed this sentiment. He remarked that nearly 8,000 studies were evaluated to reach the conclusion that vaping poses a significant cancer risk. Cochran stressed that policymakers must heed research findings and adapt regulations accordingly. “Every study like this should be considered seriously by policymakers, governments, and health organisations,” he urged.
Vaping: A Misunderstood Alternative?
While smoking was once given the benefit of the doubt in terms of safety, Sitas argues that vaping should not be afforded the same leniency, given the mounting evidence of its potential dangers. He pointed out the lack of effective strategies to help individuals quit vaping, contrasting it with established methods for smoking cessation.
Stewart cautioned that while vaping is often compared to smoking in terms of health risks, it is crucial to assess its carcinogenic potential independently. “It’s not an alternative to smoking… it is dangerous, and that’s the message,” he asserted.
Prof Stephen Duffy from Queen Mary University London warned against overgeneralizing the findings, stating that while vaping does not involve the harmful combustion products found in traditional cigarettes, the evidence should still prompt serious consideration.
Protecting Young People from Vaping Risks
Prof Becky Freeman, a tobacco control researcher at the University of Sydney, highlighted the significance of these findings, particularly for young individuals who have never smoked. She stated, “Vaping is not a safe alternative to smoking for nonsmokers.” The results of this research reinforce the necessity of Australian laws that restrict access to vaping products, allowing them only through pharmacies for those attempting to quit smoking.
Why it Matters
As the evidence mounts linking vaping to serious health risks, particularly cancer, it is imperative for regulators and health authorities to act decisively. This research serves as a critical reminder that vaping cannot be viewed as a harmless alternative to smoking. Protecting the health of vulnerable populations, especially youth, is essential. With the potential for significant public health implications, the time for action is now.
