Longitudinal associations between weight stigma and disordered eating across the weight spectrum

Abstract

Weight stigma reflects discrimination or stereotyping based on weight, and this construct is associated with body dissatisfaction, low self-esteem, and eating pathology. Recent research suggests that internalizing weight stigma (i.e., endorsing negative stereotypes about one's weight) mediates associations between experienced weight stigma and disordered eating. However, much of this research has been cross-sectional and limited data exist on associations between weight stigma constructs and eating pathology across the weight spectrum. The current study explored whether internalized weight stigma differentially mediates the relationship between experiencing weight stigma and disordered eating symptoms over time in higher-weight versus non-higher-weight individuals. Undergraduate students (N = 661, 80 % Female, 28.5 % higher weight) completed surveys at three time points over six months. Multigroup path analyses tested whether the effects of experienced weight stigma and internalized weight stigma on binge eating, food restriction, and body dissatisfaction differed between the higher-weight and non-higher-weight groups. All models showed improved fit when path estimates were allowed to vary between groups. Mediation analyses indicated a significant indirect effect of experienced weight stigma on binge eating via internalized weight stigma among the higher-weight group but not the non-higher-weight group. Only internalized weight stigma was directly associated with body dissatisfaction across weight status. A direct effect of experienced weight stigma on restriction was found in the non-higher-weight group. Findings suggest that, in general, weight stigma negatively affects body image and eating behavior, although specific effects may vary depending on one's weight.