Also known as: community, social interaction, relationships
Latest evidence update: 2026-05-04
Strongest in Recency (99). Held back by Study quality (71).
Solid mix of RCTs with some methodological gaps.
Confirmed across many independent studies with significant findings.
Tens of thousands of participants pooled across studies.
Mostly aligned, with some divergence.
Most studies are recent (last 2-3 years).
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Regular meaningful social interaction is one of the strongest predictors of longevity and mental health.
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Activity-based home rehabilitation interventions produced a small improvement in basic activities of daily living (BADL) in community-dwelling older adults with low physical performance (SMD 0.29, 95% CI 0.17 to 0.41).
Exercise plus nutrition plus psychological intervention was the most effective intervention for improving motor ability (SUCRA 77.1%) in community-dwelling older adults with frailty or prefrailty.
Social interaction demonstrates a protective effect against non-dementia cognitive decline after stroke.
A text-message-based community cessation intervention likely reduces adolescent current e-cigarette use compared with control (RR 0.73).
Social support interventions significantly improved self-efficacy in adult patients with diabetes (SMD = 1.33, 95% CI: 0.48-2.18) with high heterogeneity (I² = 95%).