Dissociation and Eating Disorders

Dissociation and eating disorders are closely linked, often co-occurring and influencing each other in complex ways. Dissociation often serves as an escape or an attempt to avoid distressing emotions such as sadness, anger, or fear. Eating disorder behaviors (e.g., bingeing, purging, restricting) can induce dissociative states, providing temporary relief from emotional pain or traumatic memories. For example, purging can create sensory disconnection from the body and release endorphins, mimicking the effects of substance use, while bingeing can lead to cognitive slowing and emotional detachment.
 
Trauma is a significant risk factor for both dissociation and eating disorders. Dissociation allows individuals to mentally separate from the pain of traumatic experiences, which may manifest in distorted body image and eating behaviors. Those with eating disorders often report “out-of-body” experiences and may fail to recognize physical consequences like extreme weight loss or other health issues due to dissociative detachment. Studies show that individuals with eating disorders exhibit higher levels of both psycho-form (mental) and somatoform (bodily) dissociation compared to non-clinical populations. The severity of dissociation often correlates with the severity of eating disorder symptoms. Binge-purging subtypes of anorexia nervosa and bulimia nervosa are particularly associated with higher levels of dissociative experiences compared to restrictive subtypes.
 
Elevated dissociation in individuals with eating disorders has been linked to increased suicidality. Depression and anxiety may mediate this relationship by exacerbating body image disturbances and emotional dysregulation. A correlation exists between self-harm, eating disorders, and dissociation. Individuals with anorexia or bulimia are more likely to experience dissociative states during harmful behaviors like bingeing or purging, which may perpetuate cycles of self-injury.
 
Understanding this relationship between dissociation and eating disorders is vital for developing comprehensive treatment strategies that address the underlying emotional and psychological needs of affected individuals. Addressing dissociation through trauma-informed care can improve outcomes by helping patients reconnect with their bodies and emotions. Since trauma underpins many cases of dissociation and eating disorders, therapeutic approaches like Eye Movement Desensitization and Reprocessing or Somatic therapies may be beneficial. 
 
Specifically, certain types of eating disorders are more closely linked to dissociation, with significant variations in the degree of dissociative experiences across different eating disorder subtypes. Bulimia nervosa is the eating disorder most strongly associated with dissociation. The binge-purge cycle often involves dissociative states, where individuals report feeling detached from their bodies or emotions during bingeing episodes or purging behaviors. These behaviors may serve as a means to escape unwanted emotions or traumatic memories. Somatoform dissociation, which involves bodily symptoms like numbness or detachment, is particularly prevalent in individuals with bulimia.
 
The binge/purge subtype of anorexia nervosa shows higher levels of dissociation compared to the restrictive subtype. Individuals with the binge/purge subtype may experience dissociative episodes similar to those seen in bulimia nervosa. In contrast, the restrictive subtype of anorexia nervosa is less frequently associated with high levels of dissociation, possibly due to differences in emotional regulation strategies and symptomatology.
 
Dissociation is less commonly linked to binge eating disorder (BED) compared to bulimia and anorexia. However, some individuals with BED may experience cognitive slowing or emotional detachment during binge episodes, which can resemble dissociative states.
 
Eating disorders not otherwise specified (EDNOS) and atypical patterns may also involve dissociation, but research focuses primarily on bulimia and anorexia subtypes.
 
Common symptoms of dissociation in individuals with eating disorders include a range of emotional, cognitive, and bodily experiences. These symptoms often arise as coping mechanisms or consequences of disordered eating behaviors. Below is a summary of these symptoms:
 
Emotional Symptoms
•    Emotional Detachment: A sense of being disconnected from one’s emotions, often used to cope with overwhelming feelings like sadness, anger, or anxiety.
•    Blunted Affect: Difficulty accessing or expressing emotions, particularly during or after disordered eating behaviors such as bingeing or purging.
 
Cognitive Symptoms
•    Memory Lapses: Forgetting important personal information or events, unrelated to physical injury or medical conditions.
•     Impaired Cognitive Processing: Slowed thinking or difficulty concentrating, often linked to bingeing or food restriction.
•    Identity Confusion: Feeling unsure about one’s identity or behaving in ways that seem out of character.
 
Bodily Symptoms
•     Feeling Disconnected from the Body: A common symptom where individuals feel detached from their physical self, often described as “out-of-body” experiences.
•  Somatoform Dissociation: Physical symptoms such as numbness or sensory disconnection, especially during purging or compulsive exercise.
•      Derealization: Feeling as though the world around them is distorted or unreal.
 
Behavioral Symptoms
Compulsive Behaviors to Induce Dissociation:
•   Bingeing can lead to cognitive slowing and emotional highs/lows due to blood sugar changes.
•  Purging creates sensory disconnection and releases endorphins, mimicking substance use effects.
•      Compulsive exercise produces mood-altering effects through endorphin release.
 
Sleep Disruptions: 
Sleep deprivation caused by eating disorder behaviors can exacerbate feelings of disconnection and dissociation.
 
Perceptual Distortions
Altered Body Image: Individuals may perceive their bodies differently than others do, failing to recognize physical consequences such as extreme weight loss or health issues.
 
These dissociative symptoms are particularly prevalent in individuals with bulimia nervosa and the binge/purge subtype of anorexia nervosa. Recognizing these signs is critical for effective treatment, as dissociation often perpetuates the cycle of disordered eating behaviors.

References:
​Arbelaez, J. (2020, December 15). Eating Disorders, Trauma, and Dissociation. ISSTD News. https://news.isst-d.org/eating-disorders-trauma-and-dissociation/Lyn, L. (2013, December 30). Eating Disorders and Self-Induced Dissociation. https://ubwp.buffalo.edu/ccvillage/wp-content/uploads/sites/74/2017/06/2004-06-Eating-Disorders-and-Self-Induced-Dissociation.pdf
Nilsson, D., Lejonclou, A, & Holmqvist, R. (2019). Psychoform and somatoform dissociation among individuals with eating disorders. Nordic Journal of Psychiatry. https://www.diva-portal.org/smash/get/diva2:1354618/FULLTEXT01.pdf
(2024). Trauma and Eating Disorders: The Link Explained. Center for Discovery. https://centerfordiscovery.com/blog/how-trauma-can-trigger-an-eating-disorder/