Common to both of these approaches is a disconnection from the body, from appetite, from health.  I don’t think it’s uncommon to eat a large and rich meal and feel at the end of it stuffed, sleepy, slightly bilious and uncomfortable – clearly not eating inspired by healthful urges.  Neither is it uncommon to stuff down a half pack of biscuits, entranced by the sensation and taste, only to look askance at the empty pack, and feel remorse.  As these habits progress the remorse, along with body weight, can grow.  This sort of eating has little to do with hunger, health; it has little to do with the needs of the body.  However, there is a point at which the bio chemistry of the body becomes engaged and plays a compelling role in eating patterns and weight management.  This is when conditions such as sugar cravings set in.  

Essentially though, when body weight and eating patterns become problematic, there is a disconnect, a dissociation from the body.