A meta-analysis of mortality rates in eating disorders: An update of the literature from 2010 to 2024.

Elevated mortality rates have been reported in individuals with eating disorders (EDs). However, no meta-analysis in the past decade has provided an updated, comprehensive synthesis of mortality across all ED diagnoses while exploring potential moderating factors. We conducted a systematic search in four databases (PsycINFO, MEDLINE, Embase and Web of Science) from 2010 to 29 Oct 2024. Studies that reported standardized mortality ratios (SMRs) in individuals with a diagnosed ED (including formal diagnoses and self-reports) were included. Random-effects meta-analyses were conducted to pool estimates across studies. Meta-regression was conducted to examine predictors of heterogeneity. Meta-analysis of SMRs of effect sizes revealed elevated mortality risk for individuals with an ED (regardless of ED subtype); weighted SMR = 3.39 (95 % CIs: 2.90, 3.95), p < .001, I2 = 95.1 %, Q(df=73) = 1492.39, p < .001. SMRs were highest for individuals with anorexia nervosa (5.21; k = 30), followed by eating disorder not otherwise specified (2.51; k = 8); bulimia nervisa (2.20; k = 18) and binge eating disorder (1.46; k = 3). Individuals with EDs demonstrate markedly heightened mortality rates, especially among those with anorexia nervosa. Our findings are crucial for identifying key factors influencing mortality in EDs, guiding targeted interventions to reduce preventable deaths.