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Psychological Stress, Inflammation, and Coronary Heart Disease
Petra H Wirtz1, Roland von Känel2
1Biological Work and Health Psychology, Department of Psychology, University of Konstanz, Universitaetsstrasse 10, 78457, Constance, Baden-Wuerttemberg, Germany. petra.wirtz@uni-konstanz.de.
Insights
Psychological stress is a significant risk factor for coronary heart disease (CHD). This review explores inflammation as a key mechanism linking stress to CHD, highlighting the need for further causal research.
Area of Science:
- Cardiology
- Psychoneuroimmunology
- Inflammation Research
Background:
- Psychological stress is a recognized risk factor for coronary heart disease (CHD).
- Both chronic and acute stress impact cardiovascular health and prognosis.
- Inflammation is increasingly implicated as a biological mediator in stress-related cardiovascular events.
Purpose of the Study:
- To review the evidence linking psychological stress to coronary heart disease (CHD) in humans.
- To explore the role of inflammation as a potential mechanism underlying this association.
- To summarize findings on both chronic and acute stress effects on CHD.
Main Methods:
- Systematic review of existing literature.
- Analysis of population-based studies on stress and inflammation.
- Examination of experimental studies on acute stress responses and inflammatory markers.
Main Results:
- Psychological stress is an independent risk factor for incident CHD and poorer cardiovascular outcomes.
- Evidence suggests a correlation between chronic stress and elevated inflammation.
- Acute stress can trigger acute CHD events, with studies showing stress-induced increases in inflammatory markers.
Conclusions:
- Psychological stress is independently associated with increased inflammation and coronary heart disease risk.
- Inflammation represents a promising biological pathway linking stress to CHD.
- Further research is needed to establish causality and explore intervention strategies for stress-related cardiovascular disease.
Purpose Of Review:
In this review, we summarize evidence on the risk factor psychological stress in the context of coronary heart disease (CHD) in humans and explore the role of inflammation as a potential underlying mechanism.
Recent Findings:
While chronic stress increases the risk of incident CHD and poor cardiovascular prognosis, acute emotional stress can trigger acute CHD events in vulnerable patients. Evidence supporting a potential role for inflammation as a promising biological mechanism comes from population-based studies showing associations between chronic stress and increased inflammation. Similarly, experimental studies demonstrate acute stress-induced increases in inflammatory markers and suggest modulatory potential for pharmacological and biobehavioral interventions. So far, studies investigating patients with cardiovascular disease are few and the full sequence of events from stress to inflammation to CHD remains to be established. Psychological stress is an independent CHD risk factor associated with increased inflammation. Although promising, causality needs to be further explored.