Eating Behaviors Associated With Suicidal Behaviors and Overall Risk.

Objective: Maladaptive eating behaviors remain prevalent in the US population, and a significant percentage of US college students acknowledge engaging in maladaptive eating. Formally defined eating disorders (EDs) have one of the highest mortality rates among all mental illnesses. Suicide risk is substantially elevated among individuals diagnosed with EDs, and even subclinical levels of maladaptive eating behaviors are associated with suicidality. The current study examined associations between specific problematic eating behaviors measured dimensionally (eg, purging, binging, laxative use) and specific suicide-related constructs and behaviors as well as overall suicide risk.

Methods: College students (N=188; 62% women) completed the Eating Disorder Examination-Questionnaire, a well-established measure of dysfunctional eating, as well as several self-report measures of theoretical components of suicidality, and, finally, a semistructured clinical interview to specify suicide risk category.

Results: Results showed a general pattern of moderate and strong associations between the subscales and the overall score of the Eating Disorder Examination-Questionnaire and core suicide constructs of the interpersonal-psychological theory of suicide. Many substantive correlations were found between specific eating behaviors and specific suicide-related behaviors; for example, purging was the highest correlate of overall suicide risk (ρ=0.36).

Discussion: These results are discussed in terms of consistency with the interpersonal-psychological theory of suicide as well as practical implications for intervention.