Political Bodies: What is the Impact of National or Regional-Level Eating Disorder Prevention?

When it comes to prevention, I’ve noticed a strong interest in working toward large-scale prevention initiatives. I’ve written about prevention before, noting the potential for unintended effects, as well as schoolgirls’ reactions to and acceptance of prevention interventions (here). But what about the larger scale efforts to prevent body image concerns and eating disorders?

Countries from the US to Australia to Israel have taken strides to implement initiatives aimed at improving national body image (a lofty goal? Perhaps.); you might have heard about bans on thin runway models and airbrushing, among other efforts. We know that eating disorders are not solely caused by thin-ideal internalization or bad body image; in fact, body image might not even be that useful of a concept for everyone, as I wrote about here.

However, improving body satisfaction could be a useful end goal in and of itself. Why not … Continue reading →

Serotonin Function in Bulimia Nervosa – Brain Circuits & Behaviour

Serotonin (5-hydroxytryptamine, 5-HT) is a neurotransmitter that is involved in just about everything. It helps ensure proper cell growth, maturation and migration during development. Serotonin is also important in regulating emotions, cognitive functions, appetite, pain, circadian rhythms, and our endocrine system in adulthood. It is hardly a surprise then, that the serotonergic system seems to be important in bulimia nervosa (BN).

I’ve written previously about serotonin in restricting-type anorexia nervosa, so for this post I’m going to be shifting focus and talk about bulimia and binge-purge type anorexia nervosa (AN-BP).

The information in this post isn’t coming from a review paper. Instead, I’m going to be summarizing and explaining information from a chapter in a book titled Behavioural Neurobiology of Eating Disorders. In the chapter on serotonin and bulimia, Howard Steiger and colleagues propose a model for serotonin action in bulimia nervosa which takes into account “diverse Continue reading →