Pathology of oral nicotine pouches and their addiction mechanisms.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic and observational studies without systematic methodology.
PubMed 41319801 · doi:10.1016/j.jdent.2025.106272
What was done
A narrative literature review was conducted via PubMed and Google Scholar searching for clinical, epidemiological, and mechanistic studies on oral nicotine pouches (ONPs), focusing on oral mucosal pathology, systemic effects, and addiction mechanisms.
What was found
The abstract reports no quantitative values, sample sizes, or effect estimates. Narratively, ONPs reduce exposure to combustion-related carcinogens relative to cigarettes or snus, but nicotine and flavor additives induce local oral mucosal lesions (characterized histologically by hyperkeratosis, edema, and inflammation via oxidative stress and NF-κB/NLRP3 signaling). Systemically, nicotine absorption elevates blood pressure and heart rate via sympathetic activation, and substantial nicotine salt dosing fosters neuroadaptations in reward pathways that reinforce dependence.
Why it matters
This review outlines the trade-off of oral nicotine pouches, which offer potential harm reduction from combustible tobacco but introduce localized oral pathology and strong addiction risks, especially for youth.
Limits
This is a narrative review without systematic screening, meta-analysis, or quality appraisal. The abstract provides no quantitative data or study counts, and long-term health outcomes of ONP use remain uncharacterized.