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Modifiable
social isolation = modifiable dementia risk factor
Pillar · Connection11 min readUpdated May 2026
Connectionandlongevity
Strong social connection predicts mortality risk in cohort data with effect sizes comparable to smoking cessation. The most-skipped longevity practice and one of the most consequential.
Lancet, 2020 (Livingston Commission)
+29 %
CV mortality with chronic social isolation
Quality > quantity
relationship depth predicts wellbeing 80 yrs out
Volunteering
≥100 hr/yr cuts mortality in older adults
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Social-tie layers
Long-lived populations cluster in the two innermost rings. Hover to compare.
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