Multiply Marginalized: Linking Minority Stress Due to Sexual Orientation, Gender, and Weight to Dysregulated Eating Among Sexual Minority Women of Higher Body Weight

Objective: This study assessed whether baseline levels of distal and proximal minority stressors related to sexual orientation, gender, and weight were associated with prospective risk for dysregulated eating in daily life among sexual minority women with overweight/obesity. Method: Fifty-five sexual minority women ages 18 – 60 (M=259) with BMI>25 kg/m2 (M=325) completed baseline assessments of distal and proximal minority stressors due to sexual orientation, gender, and weight. Participants then completed an Ecological Momentary Assessment (EMA) protocol. For five days, participants responded to five random prompts assessing engagement in dysregulated eating (i.e., overeating, binge eating). The cumulative number of EMA-measured overeating and binge eating episodes was summed per participant. Results: Several minority stressors related to sexual orientation, gender, and weight were associated with prospective risk for dysregulated eating behaviors during EMA. Women with higher (vs. lower) baseline levels of internalized homophobia reported more cumulative episodes of binge eating during the EMA period. Women reporting greater (vs. less) baseline sexual orientation concealment reported more episodes of overeating during the EMA period. Women with greater (vs. less) baseline weight bias experiences and internalization reported more overeating and binge eating episodes during the EMA period.