Evidence map›Paper›PMID 21651565›Full record

ReviewAnnals of the New York Academy of Sciences2011

Social isolation.

John T Cacioppo, Louise C Hawkley, Greg J Norman, Gary G Berntson

Open access · greenAbstract readReview
In one paragraph

Review in Annals of the New York Academy of Sciences, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 223 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
223citing papers in PubMed, 6 pooled it
19.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

223 citing papers in PubMed, 6 syntheses or guidelines pooled it, 522 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Systematic review of interventions addressing social isolation and depression in aged care clients.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2016
    Pooled it
  7. Trial
  8. Environmental modulation of social isolation-induced sleep loss inbioRxiv : the preprint server for biology · 2026
    Article
  9. Loneliness in Focus: Proposing a Resident Curriculum.Academic psychiatry : the journal of the American Association of Directors of Psychiatric Residency Training and the Association for Academic Psychiatry · 2026
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Review
  18. Review
  19. An index of intergenerational justice: main concepts and preliminary evidence from the Age-It Research Program.The journals of gerontology. Series B, Psychological sciences and social sciences · 2025
    Article
  20. The (un-)Social Brain in Isolation.Physiological research · 2025
    Review

163 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

John T CacioppoCenter for Cognitive and Social Neuroscience, University of Chicago, Illinois, USA. Cacioppo@uchicago.edu
Louise C Hawkley
Greg J Norman
Gary G Berntson
University of Chicago · USThe Ohio State University · US

Funding

The Integrative Social Relations, Health and Aging ProjectR01AG034052 · NIA · UNIVERSITY OF CHICAGO · PI CACIOPPO, JOHN T. · 2008 to 2012
$3.8M
Social Regulation of Gene Expression, SupplementR37AG033590 · NIA · UNIVERSITY OF CHICAGO · PI CACIOPPO, JOHN T. · 2010 to 2017
$3.5M
Social Regulation of Gene ExpressionR01AG033590 · NIA · UNIVERSITY OF CHICAGO · PI CACIOPPO, STEPHANIE · 2018 to 2019
$720k
Intramural NIH HHS Z99 RG999999NIA NIH HHS R01 AG034052NIA NIH HHS R37 AG033590
6 · The paper itself

Abstract

Social species, by definition, form organizations that extend beyond the individual. These structures evolved hand in hand with behavioral, neural, hormonal, cellular, and genetic mechanisms to support them because the consequent social behaviors helped these organisms survive, reproduce, and care for offspring sufficiently long that they too reproduced. Social isolation represents a lens through which to investigate these behavioral, neural, hormonal, cellular, and genetic mechanisms. Evidence from human and nonhuman animal studies indicates that isolation heightens sensitivity to social threats (predator evasion) and motivates the renewal of social connections. The effects of perceived isolation in humans share much in common with the effects of experimental manipulations of isolation in nonhuman social species: increased tonic sympathetic tonus and HPA activation; and decreased inflammatory control, immunity, sleep salubrity, and expression of genes regulating glucocorticoid responses. Together, these effects contribute to higher rates of morbidity and mortality in older adults.

Indexed as

Mental HealthAgedAged, 80 and overAnimalsBehavior, AnimalHumansHypothalamo-Hypophyseal SystemInterpersonal RelationsLonelinessPituitary-Adrenal SystemQuality of LifeSocial Isolation

Identifiers

PMID21651565
PMCPMC3166409
OpenAlexW2332324138

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.