But its nothing to be concerned about in the UK as e-liquids are heavily regulated
10.1177/0706743721996118 [DOI] [PMC free article] [PubMed] [Google Scholar] Collins, R
Major Harmful Substances Removed: Approximately 90% of tested toxicants including tobacco-specific nitrosamines (TSNAs), volatile organics, and carcinogens are either at trace levels or undetectable in nicotine pouches compared with cigarette smoke (UK Gov Review, 2022, BMJ, 2024)
Scientifically proving this phenomenon has been difficult, in part due to the lack of studies in animal models and the limited ability in collecting data from individual users, due to marijuana's illegal status
Fa-Binefa M, Clar A, Prez-Fernndez S, Grau M, Dgano IR, Marti-Lluch R, et al