A critical examination of disparities in eating disorder symptoms by sexual orientation among US adults in the NESARC-III

Abstract

Objective: Sexual minoritized persons evidence higher prevalence of eating disorders than heterosexual persons, yet it is unclear which specific symptoms drive these disparities. Empirical evidence also documents the importance of considering subclinical eating disorder presentations, as well as potential differentiation in expression of eating disorder symptoms based on gender. The current study complements that of Kamody et al. (2020), who examined sexual orientation-based disparities in eating disorder diagnoses using a nationally representative sample of the US adult population.

Method: Using the National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III), we compared the prevalence of eating disorder symptoms across sexual minority status separately for men and women.

Results: Sexual minoritized men were more likely than heterosexual men to report body mass index (BMI) < 18.5 kg/m² (odds ratio [OR] = 1.76), thus, being screened into questions about restrictive eating. Sexual minoritized women were more likely than heterosexual women to endorse ever engaging in a binge-eating episode (OR = 2.25) and engaging in weekly binge eating for at least 3 months (OR = 1.58), thus, being screened into follow-up questions about binge eating. Sexual minoritized men were more likely than heterosexual men to fear gaining weight even when at their lowest weight (OR = 4.35) and experience a loss of control when overeating (OR = 3.13).

Discussion: Sexual orientation-based disparities in eating disorder symptom endorsement were nuanced when stratifying the entire sample by gender. Findings expand previous research on disparities in clinical/diagnosed eating disorders, highlighting the importance of assessing symptomology beyond diagnosis, as well as the intersectional influence of sexual orientation and gender, in both research and practice.

Keywords: anorexia nervosa; binge eating; bulimia nervosa; eating disorders; gender; health disparities; restrictive eating; sexual minoritized.