Demographic and Minority Stress Risk Factors for Obesity Among Sexual Minority Youth Assigned Female at Birth

Purpose: Sexual minority youth (adolescents and young adults) assigned female at birth (SM-AFAB) are at disproportionate risk of developing obesity compared with heterosexual cisgender youth AFAB. Grounded in minority stress theory, this study aimed to identify potential risk factors for obesity among SM-AFAB youth to inform the development of prevention and intervention efforts for this high-risk population. Methods: Data were collected in 2017 from 367 SM-AFAB youth (ages 16-20 years). Multinominal logistic regression was used to assess cross-sectional associations of race/ethnicity, sexuality, gender identity, household income, and sexual minority (SM) stressors (internalized stigma, microaggressions, and victimization) with weight status (normal, overweight, and obese). Results: Roughly half (53.1%) of participants' body mass index were in the normal weight range, with 24.8% in the overweight range and 22.1% in the obese range. Rates of obesity in Black and Latinx participants were 3-4.5 times those of White participants. Bisexual, pansexual, and queer individuals were at greater risk for obesity than gay/lesbian participants; only bisexual participants were at higher risk for overweight. Participants with a household income <$20,000 and between $20,000 and $39,000 were at greater risk for obesity than participants with household income >$80,000. Microaggressions were positively associated with obesity. Conclusion: Findings highlight risk for obesity among SM-AFAB youth, particularly for those who identify as racial minority, as low income, as being attracted to more than one gender, and for those who experience high levels of anti-SM microaggressions. Targeted obesity prevention and treatment programs should consider the unique needs, challenges, and strengths of SM-AFAB youth.