The Healthspan Map · Social (Ch5)
Inner circle (close ties)
Compiled by Aamir Malik, PhD, Professor of Neuroengineering at Brno University of Technology, from published studies. He is a researcher, not a physician. Last updated 21 August 2026.
What this is linked to
| Condition or system | Direction | Strength | Evidence type | What was found | Source |
|---|---|---|---|---|---|
| Anxiety | Watch this | Moderate | RCT / meta-analysis | Loneliness is moderately associated with anxiety (r~0.40); stronger ties buffer it. | Gabarrell-Pascuet et al. 2023 (opens in a new tab) |
| Brain fog & memory | Watch this | Emerging | RCT / meta-analysis | Loneliness/social isolation is associated with poorer cognition across domains and higher dementia risk. | Sutin et al. 2024 (opens in a new tab) |
| Chronic fatigue / low energy | Watch this | Emerging | Cohort / observational | Close supportive ties protect against the loneliness that predicts fatigue. | Loneliness & fatigue longitudinal study (HRS) (opens in a new tab) |
| Depression / low mood | Watch this | Moderate | RCT / meta-analysis | Loneliness is moderately-to-strongly associated with depression (r~0.49); social connection is protective. | Gabarrell-Pascuet et al. 2023 (opens in a new tab) |
| Respiratory infections & airway health | Watch this | Emerging | Cohort / observational | Diverse close ties contributed to the social-integration protection against respiratory illness. | Pittsburgh common-cold studies (Cohen 2005) (opens in a new tab) |
| Stress | Watch this | Moderate | RCT / meta-analysis | Loneliness is moderately associated with stress, anxiety and depression; stronger ties buffer the stress response. | Gabarrell-Pascuet et al. 2023 (opens in a new tab) |
| General / Whole-body Energy | Watch this | Strong | RCT / meta-analysis | Stronger social relationships were associated with 50% higher odds of survival; the effect was strongest for rich social integration. | Social relationships and mortality risk: a meta-analytic review, PLoS Med 2010 (opens in a new tab) |
| General / Whole-body Energy | Watch this | Strong | RCT / meta-analysis | Weak social connection raised all-cause mortality, on par with major lifestyle risks. | Social connection and mortality meta-analysis 2024 (opens in a new tab) |
| Cardiovascular | Watch this | Moderate | RCT / meta-analysis | Deficient social relationships raised coronary heart disease and stroke risk. | Valtorta et al., Heart 2016 (meta-analysis) (opens in a new tab) |
| Neurological & Mental Health | Watch this | Moderate | Established clinical | Rich social ties protect mental and cognitive health; isolation raises dementia risk. | Social engagement and cognition review (2025) (opens in a new tab) |
| Immune, Inflammation & Infection | Watch this | Emerging | Mechanistic | Strong relationships are linked to better immune function and faster recovery from illness. | Social-connection and immune literature (opens in a new tab) |
| Immune, Inflammation & Infection | Watch this | Emerging | Cohort / observational | Strong relationships are linked to better immune function and faster recovery from illness. | Social relationships and physiological determinants of longevity across the human life span, PNAS 2016 (opens in a new tab) |
The Healthspan Map is part of Fix the Floor, a book by Aamir Malik. About the book