Evidence mapPaperPMID 32020162Full record

SynthesisThe American journal of clinical nutrition2020

Dietary intake and biomarkers of linoleic acid and mortality: systematic review and meta-analysis of prospective cohort studies.

Jun Li, Marta Guasch-Ferré, Yanping Li, Frank B Hu

Open access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in The American journal of clinical nutrition, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 5 pooled it
9.8field-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

50 citing papers in PubMed, 5 syntheses or guidelines pooled it, 122 citations in OpenAlex.

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  14. Quality analysis ofFood chemistry: X · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Jun LiDepartment of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA.
Marta Guasch-FerréDepartment of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA.
Yanping LiDepartment of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA.
Frank B HuDepartment of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA.
Brigham and Women's Hospital · USHarvard University · US

Funding

SIGNAL TRANSDUCTION IN HUMAN ABDOMINAL AND GLUTEOFEMORAL ADIPOCYTESP30DK046200 · TUFTS MEDICAL CENTER · 1992 to 2005
$5.3M
DIETARY PATTERNS AND RISK OF CARDIOVASCULAR DISEASER01HL060712 · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · 1998 to 2005
$763k
NHLBI NIH HHS R01 HL060712NIDDK NIH HHS K99 DK122128NIDDK NIH HHS P30 DK046200
6 · The paper itself

Abstract

backgroundCurrent evidence on associations between intakes of linoleic acid (LA), the predominant n-6 (ω-6) fatty acid, and mortality is inconsistent and has not been summarized by a systematic review and meta-analysis.

objectiveThe aim was to perform a systematic review and meta-analysis of prospective cohort studies to examine associations between LA intake and mortality.

methodsWe conducted a comprehensive search of MEDLINE and EMBASE databases through 31 July 2019 for prospective cohort studies reporting associations of LA (assessed by dietary surveys and/or LA concentrations in adipose tissue or blood compartments) with mortality from all causes, cardiovascular disease (CVD), and cancer. Multivariable-adjusted RRs were pooled using random-effects meta-analysis.

resultsThirty-eight studies reporting 44 prospective cohorts were identified; these included 811,069 participants with dietary intake assessment (170,076 all-cause, 50,786 CVD, and 59,684 cancer deaths) and 65,411 participants with biomarker measurements (9758 all-cause, 6492 CVD, and 1719 cancer deaths). Pooled RRs comparing extreme categories of dietary LA intake (high vs low) were 0.87 (95% CI: 0.81, 0.94; I2 = 67.9%) for total mortality, 0.87 (95% CI: 0.82, 0.92; I2 = 3.7%) for CVD mortality, and 0.89 (95% CI: 0.85, 0.93; I2 = 0%) for cancer mortality. Pooled RRs for each SD increment in LA concentrations in adipose tissue/blood compartments were 0.91 (95% CI: 0.87, 0.95; I2 = 64.1%) for total mortality, 0.89 (95% CI: 0.85, 0.94; I2 = 28.9%) for CVD mortality, and 0.91 (95% CI: 0.84, 0.98; I2 = 26.3%) for cancer mortality. Meta-regressions suggested baseline age and dietary assessment methods as potential sources of heterogeneity for the association between LA and total mortality.

conclusionsIn prospective cohort studies, higher LA intake, assessed by dietary surveys or biomarkers, was associated with a modestly lower risk of mortality from all causes, CVD, and cancer. These data support the potential long-term benefits of PUFA intake in lowering the risk of CVD and premature death.

Indexed as

AdultAgedAged, 80 and overCardiovascular DiseasesFatty Acids, Omega-6FemaleHumansLinoleic AcidMaleMiddle AgedNeoplasmsProspective StudiesRandomized Controlled Trials as TopicYoung AdultFatty Acids, Omega-6Linoleic Acidbiomarkerscardiovascular diseasedietary polyunsaturated fatty acidlinoleic acidmortality

Identifiers

PMID32020162
PMCPMC7326588
OpenAlexW3005344633

What Socratic holds

Textmetadata
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.