PTSD-Eating Disorders Link Gains Focus
Emerging studies reveal PTSD significantly raises eating disorder risk, and vice versa, with calls for combined therapy approaches to break the cycle in affected Australians.
Post-traumatic stress disorder (PTSD) often co-occurs with eating disorders, creating complex challenges for recovery, according to recent research. A systematic review found that individuals with PTSD are up to four times more likely to develop eating disorders such as anorexia nervosa, bulimia nervosa, or binge-eating disorder (1). This bidirectional link means eating disorders can exacerbate PTSD symptoms, while trauma histories heighten disordered eating behaviours (2).
In Australia, where one in twenty adults reports lifetime PTSD, this comorbidity affects thousands. Experts note that trauma-related hypervigilance and emotional numbing drive restrictive eating or binging as coping mechanisms (3). A 2023 study of over 1,000 trauma survivors showed 25% met criteria for both conditions, with shared neurobiological factors like altered reward processing in the brain (4).
Therapies addressing both show promise. Cognitive processing therapy combined with enhanced cognitive behavioural therapy for eating disorders reduced symptoms by 60% in a pilot trial (5). Australian clinicians advocate trauma-informed care, integrating exposure techniques with nutritional rehabilitation to avoid re-traumatisation (6).
Comorbid anxiety and depression, common in both, compound risks, but early screening improves outcomes. The Black Dog Institute recommends routine PTSD assessments in eating disorder clinics (7). While causation remains debated – some opine shared genetic vulnerabilities underlie both (8) – evidence supports holistic approaches.
For those affected, support hotlines like Lifeline (13 11 14) offer immediate help. Ongoing research, including longitudinal Australian cohorts, aims to refine interventions, offering hope for better management.