Alternative tobacco products showed cellular changes relevant to cancer
A review of cell and animal research found DNA damage and changes in gene regulation, but did not establish cancer risk in human users.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Research reviewed here found DNA damage with electronic cigarettes, heated tobacco, and snus or nicotine pouches. Electronic cigarettes and heated tobacco also affected epigenetic processes, meaning changes in how genes are regulated. These laboratory findings raise questions about cancer development, but the abstract does not establish how often exposed people develop cancer.
Evidence about snus and nicotine pouches was limited. The authors call for clinical studies to clarify cancer potential in people who exclusively use these products.
What the review examined
The researchers searched published literature for evidence about cancer potential, DNA damage, and gene regulation. For electronic cigarettes and heated tobacco, reported changes included reduced DNA repair capacity and alterations in chemical marks involved in gene regulation.
What remains unresolved
For snus and nicotine pouches, much of the available research concerned DNA damage, cellular stress, and cell growth. Such measurements describe biological changes; they do not directly measure cancer diagnoses or quantify a user's clinical risk.
The original publication
Comparison of carcinogenic potential of alternative tobacco products. A systematic review.
Kopa-Stojak PN, Pawliczak R
Toxicol Mech Methods · 2025
- PubMed ID
- 40741827
- Record checked
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