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Area of Science:

• Psychoneuroimmunology
• Stress Physiology
• Evolutionary Psychology

Background:

• Psychological stress, encompassing daily, work, and traumatic stressors, poses significant health risks.
• Current stress research often overemphasizes stressors rather than the duration and intensity of the body's response.
• Understanding the physiological and psychological mechanisms linking stress to somatic health is crucial.

Purpose of the Study:

• To present three recent theoretical frameworks explaining how psychological stress affects somatic health.
• To shift the focus of stress research from identifying stressors to understanding prolonged stress responses.
• To explore the evolutionary underpinnings of these stress mechanisms.

Main Methods:

• Theoretical review of recent advancements in stress research.
• Analysis of three proposed mechanisms contributing to prolonged stress responses.
• Examination of evolutionary perspectives on stress reactivity.

Main Results:

• Identified three key mechanisms driving unhealthy prolonged stress responses: perseverative cognition, unconscious stress, and the default stress response.
• Perseverative cognition is a partly-proven mechanism influencing prolonged stress.
• Unconscious stress is an emerging area of exploration, and the default stress response theory suggests it's activated in perceived danger.

Conclusions:

• Prolonged stress responses, rather than stressors alone, are critical for understanding the link between psychological stress and somatic health.
• Evolutionary factors play a significant role in maintaining stress responses even in modern environments.
• Further research into unconscious stress and the default stress response is warranted.