Evidence map›Paper›PMID 18996873›Full record

ArticleThe American journal of clinical nutrition2008

Association between adherence to the Mediterranean diet and oxidative stress.

Jun Dai, Dean P Jones, Jack Goldberg, Thomas R Ziegler, Roberd M Bostick, Peter W Wilson, Amita K Manatunga, Lucy Shallenberger, Linda Jones, Viola Vaccarino

Open access · hybridAbstract readTwin Study
In one paragraph

Article in The American journal of clinical nutrition, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
114citing papers in PubMed, 7 pooled it
11.1field-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

114 citing papers in PubMed, 7 syntheses or guidelines pooled it, 247 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Trial
  9. Trial
  10. Trial
  11. Trial
  12. Trial
  13. Review
  14. Article
  15. Review
  16. Minimal Evidence of Inflammaging in Naturalistic Chimpanzee Populations.American journal of biological anthropology · 2026
    Article
  17. Review
  18. Review
  19. Review
  20. Review

54 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

10 authors at 2 institutions in 1 country.

Jun DaiDepartment of Medicine, Division of Cardiology, Emory Program in Cardiovascular Outcomes Research and Epidemiology, Emory University School of Medicine, Atlanta, GA 30306, USA.
Dean P Jones
Jack Goldberg
Thomas R Ziegler
Roberd M Bostick
Peter W Wilson
Amita K Manatunga
Lucy Shallenberger
Linda Jones
Viola Vaccarino
Emory University · USUniversity of Washington · US

Funding

CTSA INFRASTRUCTURE FOR PEDIATRIC RESEARCHUL1RR025008 · NCRR · EMORY UNIVERSITY · PI STEPHENS, DAVID S · 2007 to 2011
$29.0M
Atlanta Clinical and Translational Science Institute (ACTSI) RenewalUL1TR000454 · NCATS · EMORY UNIVERSITY · PI STEPHENS, DAVID S · 2012 to 2016
$25.8M
X LINKED NYSTAGMUS SYNDROME WITH FEATURES OF ALBINISMM01RR000039 · NCRR · EMORY UNIVERSITY · PI VACCARINO, VIOLA · 1985 to 2007
$21.3M
Mechanisms Linking Depression to Cardiovascular RiskR01HL068630 · NHLBI · EMORY UNIVERSITY · PI VACCARINO, VIOLA · 2001 to 2010
$4.8M
Posttraumatic Stress Disorder and Cardiovascular DiseaseR01AG026255 · NIA · EMORY UNIVERSITY · PI VACCARINO, VIOLA · 2004 to 2007
$2.8M
Mind-Body Interactions in Cardiovascular DiseaseK24HL077506 · NHLBI · EMORY UNIVERSITY · PI VACCARINO, VIOLA · 2004 to 2013
$1.5M
Patient Oriented Research in Clinical NutritionK24RR023356 · NCRR · EMORY UNIVERSITY · PI ZIEGLER, THOMAS R · 2007 to 2011
$839k
NCATS NIH HHS UL1 TR000454NCRR NIH HHS K24 RR023356NCRR NIH HHS M01 RR000039NCRR NIH HHS M01-RR00039NCRR NIH HHS UL1 RR025008NHLBI NIH HHS K24 HL077506NHLBI NIH HHS K24HL077506NHLBI NIH HHS R01 HL068630NHLBI NIH HHS R01 HL68630NIA NIH HHS R01 AG026255
6 · The paper itself

Abstract

backgroundThe cardioprotective property of the Mediterranean diet has been attributed to its antioxidant capacity, but direct investigation of this mechanism has been limited.

objectiveWe examined the association between the Mediterranean diet and an established plasma marker of oxidative stress, the ratio of reduced to oxidized glutathione (GSH/GSSG), in a well-controlled study of twins.

designWe administered the Willett food-frequency questionnaire to 138 monozygotic and dizygotic twin pairs and to 21 unpaired twins and derived a score measuring adherence to the Mediterranean diet. Fasting plasma GSH and GSSG concentrations were measured to calculate the GSH/GSSG ratio. The higher the ratio, the lower the oxidative stress. Mixed-effect regression analysis was used to partition the association into between- and within-twin pair differences. When within-pair effects are examined, twins are matched for sociodemographic and familial factors.

resultsA one-unit increment in the diet score was associated with a 7% higher GSH/GSSG ratio (P = 0.03) after adjustment for energy intake, other nutritional factors, cardiovascular disease risk factors, and medication use. The association persisted within twin pairs: a one-unit within-pair absolute difference in the diet score was associated with a 10% (95% CI: 2.7, 18.0) higher GSH/GSSG ratio in the twin with the higher score than in the co-twin with the lower score (P = 0.007). Results were similar in monozygotic and dizygotic twin pairs.

conclusionsThe association between the Mediterranean diet and plasma oxidative stress is robust and is not confounded by genetic or shared environmental factors. Decreased oxidative stress is a plausible mechanism linking the Mediterranean diet to reduced cardiovascular disease risk.

Indexed as

Diet, MediterraneanTwins, DizygoticTwins, MonozygoticBiasBiomarkersCardiovascular DiseasesCluster AnalysisDiet SurveysGlutathioneGlutathione DisulfideHumansMaleMiddle AgedOxidation-ReductionOxidative StressPatient ComplianceBiomarkersGlutathioneGlutathione Disulfide

Identifiers

PMID18996873
PMCPMC3076211
OpenAlexW1880407198

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.