Mental stress and human cardiovascular disease

Area of Science:

• Neuroscience
• Cardiology
• Psychology

Background:

• Historically, emotions were linked to the heart, but 17th-century physician Thomas Willis correctly identified the brain as their source.
• Modern research explores the brain's influence on heart health, particularly how the autonomic nervous system regulates cardiac function.

Purpose of the Study:

• To examine the link between psychological states and cardiovascular disease.
• To understand the mechanisms by which emotional upheaval and chronic stress impact heart function and contribute to various cardiac conditions.

Main Methods:

• Review of historical and contemporary research on brain-heart interactions.
• Analysis of the role of the autonomic nervous system in stress-related cardiovascular events.
• Investigation of biomarkers associated with stress in patients with essential hypertension.

Main Results:

• Acute emotional distress can trigger sudden-onset heart disease, including arrhythmias, myocardial infarction, Takotsubo cardiomyopathy, and sudden cardiac death.
• Chronic psychological distress is linked to adverse cardiovascular outcomes, such as depressive illness, atherosclerosis, and hypertension.
• Stress biomarkers are detectable in individuals with essential hypertension, implicating the sympathetic nervous system.

Conclusions:

• The brain, via the autonomic nervous system, plays a critical role in both acute and chronic cardiovascular disease.
• Psychological factors, including emotional upheaval and chronic stress, are significant contributors to heart disease development and progression.