Original Article

International Journal of Obesity (2013) 37, 1282–1286; doi:10.1038/ijo.2012.224; published online 15 January 2013

Behavior and Psychology

Examination of the relationship between obesity and suicidal ideation

G R Dutton1, L P Bodell2, A R Smith3 and T E Joiner2

  1. 1University of Alabama at Birmingham, Department of Medicine, Division of Preventive Medicine, AL, USA
  2. 2Florida State University, Department of Psychology, FL, USA
  3. 3Miami University, Department of Psychology, Oxford, OH, USA

Correspondence: Dr GR Dutton, UAB Division of Preventive Medicine, 1717 11th Avenue South, Medical Towers 615, Birmingham, AL 35205, USA. E-mail: gdutton@uabmc.edu

Received 20 September 2012; Revised 3 December 2012; Accepted 10 December 2012
Advance online publication 15 January 2013

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Abstract

Objective:

 

The relationship between obesity and suicidal ideation and behavior (suicidality) is not well understood, and conventional suicide risk factors do not adequately explain the associations observed. Thus, the current study aimed to further examine the relationship between body mass index (BMI; kgm−2) and suicidal ideation as well as potential mechanisms of this relationship.

Methods:

 

Two hundred seventy-one adults (n=151 undergraduates; n=120 obesity treatment participants) completed self-report questionnaires assessing relevant variables, including suicidal ideation, perceived burdensomeness, thwarted belongingness and current height/weight used to calculate BMI.

Results:

 

There was a significant, quadratic relationship between BMI and suicidal ideation (b=0.001, t=2.21, P=0.03, partial r=0.14) and between BMI and perceived burdensomeness (b=0.003, t=2.50, P=0.013, partial r=0.16), such that as BMI increased, these positive associations became more pronounced. Additionally, perceived burdensomeness partially mediated the relationship between BMI and suicidal ideation.

Conclusions:

 

Individuals with a higher BMI demonstrated increased suicidal ideation as well as greater feelings of perceived burdensomeness. These results provide novel information regarding potential mechanisms explaining the obesity-suicidal ideation association.

Keywords:

suicidal ideation; burdensomeness; belongingness; mediation

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