Have questions about vaping? CNN wellness expert has answers | CNN

A major new review questions the safety of vaping, suggesting it could raise cancer risk. The study compiles evidence from laboratory, animal, biomarker, and epidemiologic research to examine how e-cigarette aerosols affect cells and tissues. It notes that aerosols contain potentially carcinogenic compounds such as formaldehyde, acetaldehyde, and heavy metals that may originate from heating elements. Researchers observe DNA damage and chronic inflammation linked to carcinogenesis, and they emphasize nicotine-based products as addictive.

The authors acknowledge limitations, but find consistent signals across study types that warrant concern. Dr. Leana Wen explains what this means for current vapers and parents of teens who vape. While vaping may offer some smokers a transition, the evidence does not prove safety and long-term cancer risk remains uncertain. The paper calls for more longitudinal studies as device designs evolve to clarify the risk landscape. The nicotine addiction and exposure to other compounds may contribute to cancer pathways.