Abstract
Mental health concerns are common among college students, especially students with higher body mass index (BMI). Weight bias internalization (WBI) is thought to contribute to these mental health disparities. However, little is known about how WBI differs among more diverse students, and to what extent WBI may explain associations between BMI and health in college populations. This study compared rates of WBI in Freshman college students (N = 1289) across gender, race/ethnicity, and sexual orientation, and assessed whether WBI mediated associations between BMI and mental health (depression, self-esteem, stress, loneliness) and behavioral health (disordered eating, physical activity, gym use). Black students and men demonstrated reduced WBI while bisexual women showed increased WBI. Further, WBI mediated the association of BMI with mental health and disordered eating, but not physical activity. These findings suggest that stigma may account for mental health disparities among higher-BMI students, and that minoritized groups are disproportionately impacted.