Association Between Depressive Symptoms and Incident Cardiovascular Diseases

Area of Science:

• Cardiovascular Medicine
• Psychiatry
• Epidemiology

Background:

• The independent association between depressive symptoms and cardiovascular disease (CVD) risk remains uncertain.
• Understanding this link is crucial for public health and clinical practice.

Purpose of the Study:

• To investigate the association between depressive symptoms and the incidence of CVD.
• To characterize this relationship across varying levels of mood impairment.

Main Methods:

• Pooled analysis of individual-participant data from the Emerging Risk Factors Collaboration (ERFC) and UK Biobank.
• Inclusion of over 563,000 participants with validated measures of depressive symptoms (CES-D and PHQ-2).
• Hazard ratios (HRs) were calculated for incident coronary heart disease (CHD), stroke, and composite CVD events.

Main Results:

• Depressive symptoms were associated with a higher incidence of CHD, stroke, and CVD in both cohorts.
• The association was observed even at symptom levels below the threshold for a depressive disorder.
• Hazard ratios per 1-SD increase in depression scores ranged from 1.05 to 1.11, indicating a modest but significant increase in risk.

Conclusions:

• Baseline depressive symptoms are independently associated with an increased risk of developing CVD.
• The risk is present across a spectrum of mood symptoms, not limited to diagnosed depressive disorders.
• The findings underscore the importance of considering mental health in cardiovascular risk assessment.