I’m embarrassed to say that my knowledge around binge eating disorder (BED) is sorely lacking compared to my understanding of the prevalence, correlates, treatments for, experiences of, and recovery from anorexia nervosa, bulimia nervosa, and OSFED (I still prefer “EDNOS,” but I’ll go with DSM 5 here). I don’t think this knowledge gap is uncommon; I’ve seen BED mentioned as a passing note in many an article, despite a general awareness that BED is relatively common. In order to begin to fill this knowledge gap (allow me a little self-indulgence as I fill this knowledge gap “out loud,” here), I thought I’d do a little reading and writing around BED. I also look forward to engaging in the comments, if you’re more savvy than I in this realm.
Women with bulimia nervosa are three times more likely to struggle with PTSD than women without eating disorders, according to a study by Dansky and colleagues (1997). In that study, 37% of individuals with bulimia nervosa had lifetime PTSD, compared to 12% of women without eating disorders. That’s almost two in five.
Treating eating disorders is hard, but treating eating disorders with comorbid conditions is way harder. There is no consensus, it seems, as to what disorder(s) to treat first, or whether they should be treated simultaneously:
Brewerton (2004) suggests that eating problems should be addressed prior to treating PTSD because bingeing and purging contribute to a state of physical and emotional dysregulation. Fairburn (2008), however, suggests that significant comorbid disorders be treated prior to beginning CBT for eating disorders.
The issue is quite complex,
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For example, the presence of severe depression, of which hopelessness and difficulty
Posttraumatic stress disorder (PTSD) is 3-5 times more prevalent in individuals with bulimia nervosa (BN) than those without (Dansky et al., 1997). However, the relationship between PTSD and BN–in particular, how PTSD might affect or moderate bulimic symptoms–remains largely unexplored. In a recent study, Trisha Karr and colleagues followed 119 women (20 with PTSD and BN, and 99 with BN only) for a 2 week period to investigate whether participants with comorbid PTSD + BN differed from those with BN only on the:
- Levels of negative affect (negative emotional state/mood) and affect variability (fluctuation between negative and positive states)
- Frequency of bulimic behaviours
- Relationship between emotional states (negative or positive affect) and bulimic behaviours
They used the ecological momentary assessment (EMA) tool to track behaviours and emotional states close to when they occur. I’ve blogged about a study using EMA before (‘What’s The Point of Bingeing/Purging? And Why … Continue reading →