The Relationship Between Tobacco Use and Legal Document Gender-Marker Change, Hormone Use, and Gender-Affirming Surgery in a United States Sample of Trans-Feminine and Trans-Masculine Individuals: Implications for Cardiovascular Health

Purpose: Transgender individuals smoke tobacco at disproportionately higher rates than the general U.S. population, and concurrent use of gender-affirming hormones (estrogen or testosterone) and tobacco confers greater cardiovascular (CV) risk. This study examines the relationship between tobacco use and legal document gender-marker change, and medical/surgical interventions for gender transition. Methods: Data came from an Internet-based survey of U.S. trans-feminine (n=631) and trans-masculine (n=473) individuals. We used multivariable logistic regression to investigate the relationship between past 3-month tobacco use and legal document gender-marker change, hormone use, and gender-affirming surgery controlling for demographic covariates and enacted and felt stigma. Results: Compared to trans-feminine participants, trans-masculine individuals reported significantly higher rates of lifetime (74.4% vs. 63.5%) and past 3-month tobacco use (47.8% vs. 36.1%), and began smoking at an earlier age (14.5 vs. 15.5 years). Trans-feminine smokers reported significantly more frequent and heavier use. Adjusting for demographic covariates and enacted and felt stigma, legal document gender-marker change was associated with lower tobacco-use odds among trans-feminine individuals, whereas gender-affirming surgery predicted lower smoking odds among trans-masculine individuals. There were no significant differences in tobacco use by hormone use status. Conclusion: In this study, trans-masculine individuals were more likely to smoke and trans-feminine individuals reported heavier use. It is concerning that individuals receiving hormones did not report lower smoking rates, given the elevated CV risk of this combination. This is a missed opportunity to intervene on a major public health issue and highlights the need for smoking cessation interventions in this population.