Isolation and loneliness were linked with higher cardiovascular disease risk
A pooled analysis of cohort studies found an association, but results varied substantially between studies and cannot establish cause and effect.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
People experiencing social isolation or loneliness had a higher pooled hazard of cardiovascular disease in the included cohorts. The findings describe an association over time, not evidence that isolation or loneliness directly caused disease. Large differences between study results also make the pooled estimate an incomplete description of what each study found.
The abstract reports substantial variation between studies and does not define the reference groups or detail how other influences were accounted for. These observational data cannot establish causation.
What the review combined
Researchers combined hazard ratios from cohort studies. These are relative measures, and the abstract provides no absolute event risks; it therefore cannot show how many additional people developed cardiovascular disease.
Reading the variation
The authors also reported subgroup patterns by social experience, follow-up length and region. With substantial inconsistency across studies, these patterns need cautious interpretation and do not establish which individuals would benefit from an intervention.
The original publication
Association of social isolation, loneliness and risk of cardiovascular diseases: Meta-analysis of cohort studies.
Wang L, Pan H, Cai Z et al.
BMC Public Health · 2025
- PubMed ID
- 40993644
- Record checked
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