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STRESS, CORTISOL, AND THE IMMUNE SYSTEM: WHAT MAKES US GET SICK?

 The Case of the Poor Student: Sick after Exams

It’s happened to all of us. Tom was staying up late for the last two weeks cramming for his barrage of final exams, and finally his last exam was over. After one more late night—this time partying—he woke up with that all-too-familiar soreness in his throat, along with that annoying stuffy nose. “Great,” he thought. “I’m sick in time just for Christmas shopping. Must be that pesky cold bug going around again.”

What is Psychoneuroimmunology?
Just how exactly stress affects our immune system has long been debated, but the field of psychoneuroimmunology is still relatively new. Coming from the Latin roots psych- (meaning mind), neur- (meaning nerve or nervous system), and immuno- (meaning immune), psychoneuroimmunology is the study of how the mind can affect immune system functioning. Drawing upon many disciplines of science including immunology, psychology, and physiology, psychoneuroimmunology is a very integrative field with scientists studying a wide variety of things. Although many discoveries have been made, not many people are aware of just how significant they are. In order to understand just how stress can affect our immune system, you must first understand how the immune system responds under normal circumstances to invading pathogens.

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