Several neuropeptides also mediate the response to stress. CCK is an anxiogenic neuropeptide present in the gastrointestinal tract and the brain that has recently been suggested to be a neural substrate for human anxiety.

Stress is associated with an increase in endogenous opiate release with decreased density of mu opiate receptors, which may mediate the analgesia associated with stress. Other neuropeptides under investigation that appear to play a role in the stress response are neuropeptide Y, somatostatin, and thyrotropin. Stress also has important effects on the immune system.

Getting to Know Anxiety

Getting to Know Anxiety

Stop Letting Anxiety Rule Your Life And Take Back The Control You Desire Right Now! You don't have to keep letting your anxiety disorder run your life. You can take back your inner power and change your life for the better starting today! In order to have control of a thing, you first must understand it. And that is what this handy little guide will help you do. Understand this illness for what it is. And, what it isn't.

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