Being close to people shows up in the health data.
A landmark analysis pooling 148 studies found that stronger social relationships were associated with a meaningfully lower risk of dying over the follow-up period.
Study title: Weak Social Ties Are Linked to Higher Mortality Risk — Holt-Lunstad, J., Smith, T. B., & Layton, J. B., PLoS Medicine, 2010
- Study type
- Meta-analysis
- Population
- Over 300,000 participants across 148 studies, mixed adult populations, mostly in high-income countries
- Published
- 2010
- Evidence confidence
- Strong confidence
The short version
A meta-analysis pooling 148 studies found that people with stronger social relationships had, on average, a 50% higher likelihood of survival across the study periods than people with weaker ones. The association held across age, sex, starting health and cause of death.
The finding, drawn out
- Weaker social relationshipsreference
- Stronger social relationships+50% likelihood of survival
The 50% figure is the pooled average reported by Holt-Lunstad, Smith & Layton (PLoS Medicine, 2010). It is an association across 148 studies, not an individual prediction.
Why it matters
It moves connection out of the 'nice if you have time' column. In this pooled data the association was comparable to well-established risk factors, and larger than the one seen for physical inactivity or obesity.
What this doesn't mean
It does not mean loneliness causes early death, or that adding acquaintances extends a life. These are observational studies: ill health can also shrink a social world, and the direction of the arrow can't be settled here.
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The question
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How it was studied
03
What they found
04
Limitations
05
What it may mean
In real life
If you've been treating your social life as the first thing to cut when you're busy, this is a reason to reconsider — not because one skipped dinner matters, but because the pattern over years may.
Try this
Instead of trying to expand your circle, protect the two or three relationships that already feel steady, and make sure at least one of them involves regular, low-friction contact.
Evidence confidence
Strong confidence
This is one of the most cited and replicated findings in social epidemiology, but it remains correlational — it shows a robust association, not proof that improving connection extends any individual's life.
Source
Holt-Lunstad, J., Smith, T. B., & Layton, J. B. (2010). Weak Social Ties Are Linked to Higher Mortality Risk. PLoS Medicine.
Peer-reviewed · Free full text available · Last reviewed 2026-08-14
Read the original research →One study isn't the whole storyOne study gives us a piece of the picture. Selfey looks for patterns across the broader evidence rather than treating a single finding as a rule.
Read this in everyday terms
The Case for Connection as Self-CareSelfey research briefs are educational summaries, not medical advice, diagnosis or treatment. Research describes patterns across groups; it cannot tell you what is right for your situation.
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