Evidence map›Paper›PMID 21559033›Full record

ArticleEuropean journal of clinical nutrition2011

Intake of antioxidants during pregnancy and the risk of allergies and asthma in the offspring.

B I Nwaru, M Erkkola, S Ahonen, M Kaila, C Kronberg-Kippilä, J Ilonen, O Simell, M Knip, R Veijola, S M Virtanen

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In one paragraph

Article in European journal of clinical nutrition, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 5 pooled it
2.6field-weighted citation impact, top 11% 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

26 citing papers in PubMed, 5 syntheses or guidelines pooled it, 59 citations in OpenAlex.

  1. Vitamin A, C and/or E Intake During Pregnancy and Offspring Respiratory Health: A Systematic Review and Meta-Analysis.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2025
    Pooled it
  2. Dietary factors during pregnancy and atopic outcomes in childhood: A systematic review from the European Academy of Allergy and Clinical Immunology.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2020
    Pooled it
  3. Pooled it
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  6. Trial
  7. Article
  8. Review
  9. Scientific opinion on the tolerable upper intake level for folate.EFSA journal. European Food Safety Authority · 2023
    Article
  10. Review
  11. Review
  12. Association between toenail zinc concentrations and incidence of asthma among American young adults: The CARDIA study.Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2021
    Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Review
  19. Maternal Folate Intake during Pregnancy and Childhood Asthma in a Population-based Cohort.American journal of respiratory and critical care medicine · 2017
    Article
  20. Pediatric rhinitis risk factors.Experimental and therapeutic medicine · 2016
    Article
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 7 institutions in 1 country.

B I NwaruSchool of Health Sciences, University of Tampere, Tampere, Finland. bright.nwaru@uta.fi
M Erkkola
S Ahonen
M Kaila
C Kronberg-Kippilä
J Ilonen
O Simell
M Knip
R Veijola
S M Virtanen
Finnish Institute for Health and Welfare · FITampere University · FIUniversity of Turku · FIHelsinki University Hospital · FITampere University · FIUniversity of Helsinki · FIUniversity of Oulu · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

objectivesThe potential immune functions related to the damages induced by oxygen-free radicals suggest that antioxidants may have a role in the development of allergies. The objective was to investigate the association between maternal intake of antioxidants during pregnancy and the risk of asthma, rhinitis and eczema in 5-year-old children. SUBJECTS/

methodsThis study was on the basis of the Finnish Type 1 Diabetes Prediction and Prevention Nutrition Study, a population-based birth cohort study with 5-year follow-up. Complete information on maternal food frequency questionnaire data and ISAAC (International Study of Asthma and Allergies in Childhood)-based allergic outcomes were available for 2441 children. Cox proportional regression and logistic regression were used for the analyses.

resultsMaternal intake of any of the antioxidants was not significantly associated with the risk of asthma, rhinitis or eczema in the offspring, except for dietary intake of magnesium, which was independently associated with protection against eczema (OR 0.78; 95% CI 0.62-0.97).

conclusionMaternal intake of dietary magnesium during pregnancy may protect against the risk of eczema in the offspring. We did not confirm previous observations concerning other antioxidants. This may be due to the variable amount of antioxidant intake across studies and also indicative of the hypothesis that there may be a critical time window in pregnancy during which antioxidants might modify the risk of allergies in the offspring.

Indexed as

AntioxidantsAsthmaChild, PreschoolDietEczemaFemaleFinlandFollow-Up StudiesHumansHypersensitivityMagnesiumMaleMaternal Nutritional Physiological PhenomenaNutrition AssessmentPregnancyPrenatal Exposure Delayed EffectsAntioxidantsMagnesium

Identifiers

PMID21559033
OpenAlexW2063757693

What OpenQuestion 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 OpenQuestion graph.