A major new study is raising serious concerns about vaping. Researchers from the University of New South Wales reviewed scientific studies published between 2017 and 2025 and found evidence linking e-cigarettes to DNA damage, inflammation, and tissue changes that may increase the risk of lung and mouth cancer.
While vaping has often been promoted as a safer alternative to smoking, the researchers warn it is not risk-free. The review found that chemicals in vape aerosols can trigger oxidative stress and alter the oral microbiome, which may lead to chronic inflammation and potentially cancer development.
The risks appear even higher for people who both smoke cigarettes and vape. Studies suggest this dual use could increase the risk of lung cancer up to four times compared with non-users.
Experts say more long-term research is still needed because vaping is relatively new. However, scientists warn that waiting decades for conclusive evidence could repeat the same mistake made with cigarettes in the past.
Some health experts still argue that vaping exposes users to fewer carcinogens than traditional tobacco and can help smokers quit. But researchers emphasize that people who have never smoked should avoid vaping entirely.
As vaping continues to grow in popularity, especially among young people, the debate over its long-term health effects is becoming more urgent.
