最新研究顯示電子菸會增加罹癌風險
New study links vaping to increased cancer risk
一項近期發表於《致癌作用》期刊的研究，對電子煙的安全性提出了重大疑慮。
A recent study published in the journal Carcinogenesis has raised significant concerns about the safety of e-cigarettes.
新南威爾斯大學的研究人員針對全球一百多項研究進行了全面的統合分析，結論指出尼古丁電子煙極可能導致肺癌與口腔癌。
Researchers at the University of New South Wales conducted a comprehensive meta-analysis of over 100 global studies, concluding that nicotine-based vaping is likely to cause lung and oral cancers.
與過去僅將電子煙與傳統香菸進行比較的實驗不同，本研究是單獨評估電子煙本身的影響，並在霧化氣體中發現了有害的揮發性有機化學物質與重金屬。
Unlike previous research that compared vaping solely to smoking, this study assessed vaping on its own merits, identifying harmful volatile organic chemicals and heavy metals in aerosols.
這些物質會導致DNA損傷、慢性發炎與氧化應激，而這些均是廣為人知的腫瘤生長前兆。
These substances contribute to DNA damage, chronic inflammation, and oxidative stress, which are well-known precursors to tumor growth.
研究中一個討論的重點是「潛伏期落差」；由於電子煙相對新穎，我們缺乏數十年的長期人體數據。
A major point of discussion is the latency gap; because vaping is relatively new, we lack decades of long-term human data.
研究也強調了「雙重使用」(即同時吸菸與使用電子煙)的風險，其癌症風險可能比單純吸菸增加四倍。
The study also highlights the risks of dual-use, where individuals both smoke and vape, potentially increasing cancer risk four-fold compared to smoking alone.
歸根究底，專家們主張，雖然電子煙所含的化學物質可能比傳統香菸少，但它並非無害的習慣。
Ultimately, the experts argue that while vaping may contain fewer chemicals than traditional cigarettes, it is not a harmless habit.
