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Updated: Sep 16, 2025
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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
Published on: July 20, 2022
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The Causal Relationship Between Atrial Fibrillation and Work and Sleep
Xuejiao Wu1, Fang Liu2, Le Jin1
1Shandong University of Traditional Chinese Medicine.
International Heart Journal
|July 9, 2025
Summary
Heavy physical labor increases atrial fibrillation (AF) risk, while job satisfaction offers a protective effect. This study clarifies causal links between occupational factors and AF development.
Area of Science:
- Cardiology
- Occupational Health
- Genetics
Background:
- Atrial fibrillation (AF) is a prevalent arrhythmia impacting patient quality of life.
- Observational studies suggest links between work, sleep, and AF, but causality remains uncertain.
Purpose of the Study:
- To investigate the causal relationships between occupational factors, sleep patterns, and atrial fibrillation (AF).
- To utilize Mendelian Randomization to assess the impact of specific work and sleep traits on AF risk.
Main Methods:
- A two-sample Mendelian Randomization (MR) analysis was performed.
- Genome-wide association study (GWAS) data for work (3 factors) and sleep (2 factors) were used as exposures.
- The FinnGen study served as the outcome dataset for AF.
Main Results:
- Heavy physical work showed a causal association with increased AF risk (IVW OR, 1.787; P = 0.023).
- Job satisfaction demonstrated a protective effect against AF (IVW OR, 0.719; P = 0.028).
- No significant associations were found for jobs involving walking/standing, short sleep (<7 hours), or long sleep (≥9 hours).
Conclusions:
- A causal link exists between heavy physical labor and an elevated risk of atrial fibrillation.
- Job satisfaction appears to confer a protective effect against the development of AF.
- Further research into occupational and sleep influences on cardiovascular health is warranted.
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