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Research/Sociodemographic/Relationship status

Factor · Sociodemographic

Relationship status

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Lifestyle Safety Sociodemographic Mental Biomarkers Blood Levels Family History Medical History Nutrition & Diet

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Confounding risk Ecological / population-level data Interventional / RCT evidence Large cohort (100k+) Meta-analysis Observational evidence Reverse causation risk Self-report bias Systematic review

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Marital status and risk of cardiovascular, cancer and all-cause mortality: systematic review and meta-analysis

Moderate–strong

Relationship status Confounding risk Meta-analysis Observational evidence

Systematic review & meta-analysis

2025 pooled estimate: single HR ~1.55; divorced ~1.39; widowed ~1.43 vs married

Causal status: Association

Reliability / bias notes: Health selection into/out of relationships; social support and income confounding

Wang et al. · 2020 · PMID 32161813

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Important disclosures. This research library is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment, and is not a substitute for consultation with a qualified healthcare professional.

Entries summarise population-level associations from published research. They describe patterns across large groups of people, not a prediction about any one individual — "association" is not the same as "if you change this, your risk changes by this amount."

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