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Understanding disordered eating in individuals with type 2 diabetes: A theoretical model evaluation.
Emma Reid1, Melissa Oxlad2, Alicia Carter1
1Central Queensland University, Australia.
Journal of Health Psychology
|March 10, 2026
Summary
Disordered eating in type 2 diabetes (T2DM) is linked to poor health. Stice's dual pathway model showed poor fit, but a revised model found body weight shame impacts binge eating through negative affect.
Area of Science:
- Psychology
- Endocrinology
- Public Health
Background:
- Disordered eating presents significant physical and psychological challenges for individuals with type 2 diabetes (T2DM).
- Established disordered eating models require evaluation for applicability within the T2DM population to guide effective interventions.
- Theoretical modeling is crucial for developing targeted interventions for disordered eating in T2DM.
Purpose of the Study:
- To assess the validity of Stice's dual pathway model of disordered eating among adults with T2DM.
- To identify key psychological factors contributing to disordered eating behaviors in this population.
Main Methods:
- A cross-sectional survey was administered to 192 adults with T2DM.
- Measures included body weight shame, dietary restraint, negative affect, and binge eating.
- Structural equation modeling was employed to test the theoretical model.
Main Results:
- Stice's dual pathway model exhibited a poor fit, with the dietary restraint pathway not being supported.
- A revised model, excluding the restraint pathway, demonstrated a superior fit.
- Negative affect was identified as a significant mediator between body weight shame and binge eating.
Conclusions:
- The original dual pathway model is not fully applicable to individuals with T2DM.
- Body weight shame, mediated by negative affect, is a key factor in binge eating for T2DM patients.
- Findings inform the development of tailored interventions for disordered eating in type 2 diabetes management.
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