Evidence map›Paper›PMID 38811538›Full record

ArticleTranslational psychiatry2024

Omega-3 fatty acids and major depression: a Mendelian randomization study.

R Carnegie, M C Borges, H J Jones, J Zheng, P Haycock, J Evans, R M Martin

Abstract read
In one paragraph

Article in Translational psychiatry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
–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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Evaluating the causal effects of circulating metabolites on major depression disorder.European archives of psychiatry and clinical neuroscience · 2026
    Article
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  6. Prediction of cognitive outcome and progression to dementia using ω6-PUFA/ω3-PUFA ratio.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
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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

7 authors.

R CarnegieCentre for Academic Mental Health, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK. rebecca.carnegie@bristol.ac.uk.ORCID 0000-0001-5504-1414
M C BorgesMedical Research Centre (MRC) Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK.
H J JonesCentre for Academic Mental Health, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.ORCID 0000-0002-5883-9605
J ZhengMedical Research Centre (MRC) Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK.ORCID 0000-0002-6623-6839
P HaycockMedical Research Centre (MRC) Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK.
J EvansCentre for Academic Mental Health, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.ORCID 0000-0003-3171-640X
R M MartinMedical Research Centre (MRC) Integrative Epidemiology Unit (IEU), University of Bristol, Bristol, UK.ORCID 0000-0002-7992-7719

Funding

Cancer Research UK (CRUK) C18281/A29019DH | National Institute for Health Research (NIHR) NIHR202411Medical Research Council MC_UU_00011/1Medical Research Council MC_UU_00011/3Medical Research Council MC_UU_00011/6RCUK | Medical Research Council (MRC) MC_UU_00011/1, MC_UU_00011/3, MC_UU_00011/6, and MC_UU_00011/4RCUK | Medical Research Council (MRC) MR/P014054/1RCUK | MRC | Medical Research Foundation MC_UU_00011/1, MC_UU_00011/3, MC_UU_00011/6, and MC_UU_00011/4Wellcome TrustWellcome Trust (Wellcome) 212557/Z/18/Z
6 · The paper itself

Abstract

Omega-3 fatty acids have been implicated in the aetiology of depressive disorders, though trials supplementing omega-3 to prevent major depressive disorder (MDD) have so far been unsuccessful. Whether this association is causal remains unclear. We used two sample Mendelian randomization (MR) to investigate causality. Genetic variants associated with circulating omega-3 and omega-6 fatty acids in UK Biobank (UKBB, n = 115,078) were selected as exposures. The Psychiatric Genomics Consortium (PGC) genome-wide association studies (GWAS) of MDD (n = 430,775; cases = 116,209; controls = 314,566) and recurrent depression (rMDD, n = 80,933; cases = 17,451; controls = 62,482), were used as outcomes. Multivariable MR (MVMR) models were used to account for biologically correlated lipids, such as high- and low-density cholesterol and triglycerides, and to explore the relative importance of longer-chain omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) using data from the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE, n = 8866). Genetic colocalization analyses were used to explore the presence of a shared underlying causal variant between traits. Genetically predicted total omega-3 fatty acids reduced the odds of MDD (OR

Indexed as

Fatty Acids, Omega-3Genome-Wide Association StudyMajor Depressive DisorderMendelian Randomization AnalysisAdultAgedDelta-5 Fatty Acid DesaturaseDocosahexaenoic AcidsEicosapentaenoic AcidFatty Acid DesaturasesFatty Acids, Omega-6FemaleHumansMaleMiddle AgedPolymorphism, Single NucleotideDelta-5 Fatty Acid DesaturaseDocosahexaenoic AcidsEicosapentaenoic AcidFADS1 protein, humanFADS2 protein, humanFatty Acid DesaturasesFatty Acids, Omega-3Fatty Acids, Omega-6

Identifiers

PMID38811538
PMCPMC11136966

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.