 While studies are still continuing via the use of various imaging techniques such as fMRI; these traits have been shown to originate in various regions of the brain such as the amygdala and the prefrontal cortex.Disorders in the prefrontal cortex and the executive functioning system have been shown to affect eating behavior.People with gastrointestinal disorders may be more risk of developing disordered eating practices than the general population, principally restrictive eating disturbances.