Persistent social connection over time is associated with attenuated biological ageing assessed by AI-enabled electrocardiography
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ID: 317602
2026
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Abstract
AIMS: Social isolation (SI) is associated with a higher risk of cardiovascular disease (CVD). One mechanism linking SI and CVD is accelerated biological ageing, which can be assessed using artificial intelligence-enabled electrocardiography (AI-ECG). We investigated whether longitudinal changes in SI status are associated with changes in biological ageing patterns. METHODS AND RESULTS: A retrospective longitudinal cohort study including 17 663 individuals without significant CVD who completed ≥2 Berkman and Syme Social Network Index and had paired ECGs within 1 year of each questionnaire. Longitudinal SI status was defined by comparing baseline and follow-up SI status. Ageing trends were assessed using Δage-gap, defined as the change in the gap between AI-ECG-predicted age and chronological age from baseline to follow-up. Linear regression models predicting Δage-gap and survival analyses with Kaplan-Meier and multivariable Cox regression for all-cause mortality were performed. Persistently connected individuals were older [63.1 (52.1, 70.6) years] and had a higher prevalence of hyperlipidaemia and hypertension, yet demonstrated more favourable ageing trajectories. Similarly, those who became connected showed a non-significant attenuation of accelerated ageing. In multivariable linear regression, being persistently isolated [β = +0.412 years, P < 0.001] or becoming isolated [β = +0.438 years, P = 0.012] was associated with accelerated ageing compared to being persistently connected. In survival analyses, becoming isolated (aHR = 1.94, 95% CI = 1.53-2.46, P < 0.001) and being persistently isolated (aHR = 1.66, 95% CI = 1.40-1.96, P < 0.001) were associated with significantly higher all-cause mortality, independent of chronological age and comorbidities. CONCLUSION: Persistent social connection is associated with slower biological ageing and lower mortality. The effects of SI on ageing and survival appear to be potentially reversible, calling for a prospective study to evaluate interventions aimed at improving both the social and biological burden of SI.
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| Authors | Matteo Manzato, Parvin Kalhor, Negin Mahmoudi Hamidabad, Kai Nogami, Lilach O Lerman, F Lopez-Jimenez, Amir Lerman |
| Journal | european journal of preventive cardiology |
| Year | 2026 |
| DOI |
10.1093/eurjpc/zwag212
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| URL | |
| Keywords | Keywords not found |
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