TAF has been associated with more severe eating disorder symptoms in individuals with an OCD and eating disorder comorbidity. There is also a possibility that TAF plays a role in eating disorders. This variation of TAF, known as Thought Shape Fusion, suggests that the excessive concern about their weight and body shape leads to the belief that their thoughts can actually have an impact on their body. 

Xavier University

A major symptom of OCD is the presence of obsessive and intrusive thoughts that cause the individual a significant amount of distress. Accompanying these thoughts is  the irrational fear and belief that their thoughts can actually make an event/action more likely to occur. In addition, the strong, irrational association between thought and action can lead an individual to become convinced that having an intrusive thought of themselves doing something they perceive as morally wrong is the same as actually doing it. These beliefs are known as Thought Action Fusion, or TAF. 

Comorbidity of Eating Disorders and Obsessive Compulsive Disorder: Thought Action Fusion (TAF) 

Lee, E.B. et al. (2020). Obsessive compulsive disorder and thought action fusion: Relationships with eating disorder outcomes. Eating Behaviors. https://doi.org/10.1016/k.eatbeh.2020.101386

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