Evidence map›Paper›PMID 34831917›Full record

ReviewInternational journal of environmental research and public health2021

Loneliness: An Immunometabolic Syndrome.

Homa Pourriyahi, Niloufar Yazdanpanah, Amene Saghazadeh, Nima Rezaei

Abstract readReview
In one paragraph

Review in International journal of environmental research and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
–field-weighted citation impact
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

38 citing papers in PubMed.

  1. Trial
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  6. Review
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  11. Review
  12. Loneliness in schizophrenia: Just loneliness.Annals of the New York Academy of Sciences · 2025
    Review
  13. Article
  14. Article
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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.

Homa PourriyahiStudent Research Committee, School of Medicine, Iran University of Medical Sciences, Tehran 14496 14535, Iran.ORCID 0000-0001-5393-0875
Niloufar YazdanpanahSchool of Medicine, Tehran University of Medical Sciences, Tehran 14167 53955, Iran.ORCID 0000-0003-4333-2163
Amene SaghazadehResearch Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran 14197 33151, Iran.
Nima RezaeiNetwork of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran 14197 33151, Iran.ORCID 0000-0002-3836-1827

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Loneliness has been defined as an agonizing encounter, experienced when the need for human intimacy is not met adequately, or when a person's social network does not match their preference, either in number or attributes. This definition helps us realize that the cause of loneliness is not merely being alone, but rather not being in the company we desire. With loneliness being introduced as a measurable, distinct psychological experience, it has been found to be associated with poor health behaviors, heightened stress response, and inadequate physiological repairing activity. With these three major pathways of pathogenesis, loneliness can do much harm; as it impacts both immune and metabolic regulation, altering the levels of inflammatory cytokines, growth factors, acute-phase reactants, chemokines, immunoglobulins, antibody response against viruses and vaccines, and immune cell activity; and affecting stress circuitry, glycemic control, lipid metabolism, body composition, metabolic syndrome, cardiovascular function, cognitive function and mental health, respectively. Taken together, there are too many immunologic and metabolic manifestations associated with the construct of loneliness, and with previous literature showcasing loneliness as a distinct psychological experience and a health determinant, we propose that loneliness, in and of itself, is not just a psychosocial phenomenon. It is also an all-encompassing complex of systemic alterations that occur with it, expanding it into a syndrome of events, linked through a shared network of immunometabolic pathology. This review aims to portray a detailed picture of loneliness as an "immunometabolic syndrome", with its multifaceted pathology.

Indexed as

LonelinessStress, PsychologicalHumansMental HealthSocial Isolationantiviral immunitycortisolCTRAcytokineshypothalamic-pituitary-adrenocortical axisimmune regulationlonelinessmetabolic regulationperceived social isolationpsychosocial stressstress circuitry

Identifiers

PMID34831917
PMCPMC8618012

What OpenQuestion holds

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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.