Evidence map›Paper›PMID 26936135›Full record

ArticleThe Journal of nutrition2016

The Omega-3 Index Is Inversely Associated with Depressive Symptoms among Individuals with Elevated Oxidative Stress Biomarkers.

Sherman J Bigornia, William S Harris, Luis M Falcón, José M Ordovás, Chao-Qiang Lai, Katherine L Tucker

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in The Journal of nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01231958 (The Boston Puerto Rican Health Study), which is not on this map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 5% 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.

NCT01231958 completednot on this map

The Boston Puerto Rican Health Study: Center for Population Health and Health Disparities

TypeobservationalSponsorUniversity of Massachusetts, LowellRan2004 to 2017Enrolled1,650ConditionsCardiovascular Risk FactorArmsThe Heart Healthy Initiative for Hispanic Adults (HIP)
3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

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  4. Association of dietary long-chainThe British journal of nutrition · 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

6 authors at 3 institutions in 2 countries.

Sherman J BigorniaClinical Laboratory and Nutritional Sciences and bigornia@bu.edu.
William S HarrisDepartment of Medicine, Sanford School of Medicine of the University of South Dakota, Sioux Falls, SD; and.ORCID 0000-0003-3042-9353
Luis M FalcónCollege of Fine Arts, Humanities, and Social Sciences, University of Massachusetts Lowell, Lowell, MA;
José M OrdovásJean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA.
Chao-Qiang LaiCollege of Fine Arts, Humanities, and Social Sciences, University of Massachusetts Lowell, Lowell, MA;
Katherine L TuckerClinical Laboratory and Nutritional Sciences and.ORCID 0000-0001-7640-662X
University of Massachusetts Lowell · USTufts University · USUniversity of South Dakota · US

Funding

STATISTICSP50HL105185 · NHLBI · UNIVERSITY OF MASSACHUSETTS LOWELL · PI FALCON, LUIS MIGUEL · 2010 to 2015
$10.4M
Center for Research/Nutrition &Health among the ElderlyP01AG023394 · NIA · TUFTS UNIVERSITY BOSTON · PI TUCKER, KATHERINE L · 2003 to 2007
$8.1M
Nutrition, Stress and Bone in Older Puerto RicansR01AG027087 · NIA · TUFTS UNIVERSITY BOSTON · PI TUCKER, KATHERINE L · 2007 to 2009
$1.9M
NHLBI NIH HHS P50 HL105185NIA NIH HHS P01 AG023394NIA NIH HHS R01 AG027087
6 · The paper itself

Abstract

backgroundOmega-3 (n-3) fatty acid (FA) consumption is thought to improve depressive symptoms. However, current evidence is limited, and whether this association exists among Puerto Ricans, a population burdened by depression, remains uncertain.

objectivesWe examined the association between ω-3 FA biomarkers and depressive symptoms as well as the potential influence of oxidative stress.

methodsBaseline and longitudinal analyses were conducted in the Boston Puerto Rican Health Study (n= 787; participants aged 57 ± 0.52 y, 73% women). Urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) concentration, a measure of oxidative stress, and erythrocyte FA composition were collected at baseline. We calculated the omega-3 index as the sum of eicosapentaenoic and docosahexaenoic acids, expressed as a percentage of total FAs. Baseline and 2-y depressive symptoms were characterized by using the Center for Epidemiological Studies-Depression Scale (CES-D). Statistical analyses included linear and logistic regression.

resultsUrinary 8-OHdG concentration tended to modify the relation between the erythrocyte omega-3 index and baseline CES-D score (P-interaction = 0.10). In stratified analyses, the omega-3 index was inversely associated with CES-D score (β = -1.74, SE = 0.88;P= 0.02) among those in the top quartile of 8-OHdG concentration but not among those in the lower quartiles. The relation between the omega-3 index and CES-D at 2 y was more clearly modified by 8-OHdG concentration (P-interaction = 0.04), where the omega-3 index was inversely associated with CES-D at 2 y, adjusted for baseline (β = -1.66, SE = 0.66;P= 0.02), only among those with elevated 8-OHdG concentrations. Among individuals not taking antidepressant medications and in the top tertile of urinary 8-OHdG concentration, the omega-3 index was associated with significantly lower odds of a CES-D score ≥16 at baseline (OR: 0.72; 95% CI: 0.53, 0.96) but not at 2 y (OR: 0.83; 95% CI: 0.60, 1.15).

conclusionsAn inverse association between the omega-3 index and depressive symptoms was observed among participants with elevated oxidative stress biomarkers. These data suggest that oxidative stress status may identify those who might benefit from ω-3 FA consumption to improve depressive symptoms.

Indexed as

Oxidative Stress8-Hydroxy-2'-DeoxyguanosineBiomarkersBlood GlucoseBody Mass IndexBostonCholesterol, HDLCholesterol, LDLCross-Sectional StudiesDeoxyguanosineDepressionDNA DamageErythrocytesExerciseFatty Acids, Omega-3Female8-Hydroxy-2'-DeoxyguanosineBiomarkersBlood GlucoseCholesterol, HDLCholesterol, LDLDeoxyguanosineFatty Acids, Omega-3InsulinTriglyceridesAPOEBoston Puerto Rican Health Studydepressionomega-3 fatty acidsoxidative stress

Identifiers

PMID26936135
PMCPMC4807643
OpenAlexW2324788171

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Registered trials

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.