Nicotine, Carcinogen, and Toxin Exposure in Long-Term E-Cigarette and Nicotine Replacement Therapy Users
This study examines how toxin levels in the bodies of tobacco smokers compares to toxin levels in e-cigarette and nicotine replacement therapy (NRT) users’ bodies, on a long-term basis.
This study, conducted by University College London (UCL) senior lecturer in health psychology Lion Shahab and a team of UCL researchers, examines how toxin levels in the bodies of tobacco smokers compares to toxin levels in e-cigarette and nicotine replacement therapy (NRT) users’ bodies, on a long-term basis.
E-cigarette use did not increase carcinogen and toxin levels in users, Shahab writes.
“Former smokers with long-term e-cigarette-only or NRT-only use may obtain roughly similar levels of nicotine compared with smokers of combustible cigarettes only, but results varied,” Shahab writes. “Long-term NRT-only and e-cigarette–only use, but not dual use of NRTs or e-cigarettes with combustible cigarettes, is associated with substantially reduced levels of measured carcinogens and toxins relative to smoking only combustible cigarettes.
E-cigarette and NRT use is less risky than tobacco use, Shahab writes.
The lower levels of carcinogens and toxins associated with NRT-only and e-cigarette-only use in this study confirm the known low risk for complications from long-term NRT use,” Shahab writes. “This finding also underscores the translation of greatly reduced concentrations of some carcinogens and toxins from e-liquids and aerosols to body-level exposure, contrary to worries that long-term e-cigarette use would result in substantial harmful exposure.”