Facets of Gender Expression and Discrimination in Relation to Alcohol and Other Drug Use Severity Among Sexual Minority Women and Gender Diverse Individuals Assigned Female at Birth.

Purpose: Sexual minority women and gender diverse individuals assigned female at birth (SMW+) consistently report more alcohol and other drug (AOD) use severity than heterosexual women, with greater disparities reported among bisexual plus (bi+) SMW (including bisexual, pansexual, queer, and those with attractions to more than one gender regardless of identity). Furthermore, emerging evidence suggests that SMW with masculine gender expression (e.g., SMW with masculine gender appearance) disproportionately experience problematic AOD use compared to those with feminine gender expression. The minority stress model, which has predominantly been investigated in relation to internalized homonegativity and sexuality-based discrimination, may also account for these AOD use disparities. This study examined gender expression, related discrimination, and AOD use severity among SMW+. Methods: In a 2020 sample of SMW+ ( n  = 236), we investigated AOD use severity in relation to gender expression (appearance, emotional expression, and gender roles) and gender expression-based discrimination after controlling for internalized homonegativity and sexuality-based discrimination through an online survey. Results: Masculine gender roles were associated with AOD use severity, whereas masculine appearance and emotional expression were not. Although gender identity and sexuality-based discrimination remained significantly associated with AOD use severity in multivariable models, gender expression-based discrimination did not. Conclusion: This study emphasizes the importance of examining intersecting aspects of minority identity among SMW+, including facets of gender expression, in relation to AOD use severity.