The link between stress and constipation involves the nervous system and the connection between the brain and body. The ...

It consists of enteric, parasympathetic and sympathetic nervous systems and is regulated by the central nervous system, but functions largely autonomously, without conscious control.

Following acute multiple trauma, hypothalamic stimulation of the sympathetic nervous system and adrenal glands causes an increase in circulating corticoids and catecholamines, or a stress response.