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Heartache and Heartbreak: An Observational and Mendelian Randomization Study

Dihui Cai1, Mengming Xia2, Xuhui Chen2

  • 1Department of Cardiology, Ningbo Medical Center of Lihuili Hospital, Ningbo, Zhejiang, China.

Global Heart
|February 19, 2024
PubMed

Insights

Depression causally increases the risk of cardiovascular diseases (CVD), with hyperlipidemia, hypertension, diabetes, and opioid use acting as key mediators. Managing these factors may reduce CVD burden in depressed individuals.

Area of Science:

  • Cardiovascular disease research
  • Mental health and epidemiology
  • Genetic epidemiology

Background:

  • Depression significantly impacts cardiovascular disease (CVD) risk.
  • Uncertainty exists regarding modifiable risk factors mediating depression's causal link to CVD.

Purpose of the Study:

  • To determine if depression causally affects CVD.
  • To identify modifiable risk factors mediating the depression-CVD association.

Main Methods:

  • Two-sample Mendelian randomization (MR) approach.
  • Utilized NHANES 2007-2018 data.
  • Investigated 28 potential mediators.

Main Results:

  • Genetically determined depression associated with increased risk of coronary heart disease, myocardial infarction, atrial fibrillation, and stroke.
  • No causal link found between depression and heart failure.
  • Hyperlipidemia, hypertension, diabetes, and prescription opioid use identified as significant mediators.

Conclusions:

  • Depression has a causal detrimental effect on various CVDs.
  • Four mediators (hyperlipidemia, hypertension, diabetes, opioid use) explain this causal pathway.
  • Targeted management of these risk factors could mitigate CVD burden in depressed populations.
Abstract

Keywords:
Mendelian randomizationcardiovascular diseasesdepression

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