last updated:

April 15, 2021

[Brain Image]    

PSY 340 Brain and Behavior

Class 29: Stress and Health [Outline]


Think of the kinds of stress do you or other college students experience?

Demands of work and school at the same time?
Taking care of children or sick parents while holding down a job?
Demands at work that you give 110%?
Taking too many classes?
Personal life-threatening illness?


                2021 Jan Stress Levels

                2021 Jan Causes of Stress

I. Stress and the Autonomic Nervous System

II. Stress, the HPA Axis, & the Immune System

       hpa axis and hippocampus   Glucose & Cortisol

  Effects of Stress on the Immune System

Cytokines: combat infections and also communicate with the brain
Strong, inescapable, and temporary stresses trigger similar responses to those caused by an illness: fever, sleepiness, decreased appetite & sex drive
Brief stress causes SNS arousal and HPA Axis arousal: in the short run, these strengthen the body.
Long-term or chronic stress, anger, or anxiety leads to harm of the body, e.g.,

This page was first posted April 7, 2005.