Evidence map›Paper›PMID 25948625›Full record

ArticleMultiple sclerosis (Houndmills, Basingstoke, England)2015

Timing of use of cod liver oil, a vitamin D source, and multiple sclerosis risk: The EnvIMS study.

Marianna Cortese, Trond Riise, Kjetil Bjørnevik, Trygve Holmøy, Margitta T Kampman, Sandra Magalhaes, Maura Pugliatti, Christina Wolfson, Kjell-Morten Myhr

Open access · hybridAbstract read
In one paragraph

Article in Multiple sclerosis (Houndmills, Basingstoke, England), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 3 pooled it
4.0field-weighted citation impact, top 6% 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, 3 syntheses or guidelines pooled it, 75 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Article
  6. Review
  7. Multiple sclerosis: molecular pathogenesis and therapeutic intervention.Signal transduction and targeted therapy · 2025
    Review
  8. Neurological complications due to copper deficiency in the context of Wilson disease treatment: a case report with long-term follow-up and review of the literature.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Seafood, fatty acid biosynthesis genes, and multiple sclerosis susceptibility.Multiple sclerosis (Houndmills, Basingstoke, England) · 2020
    Article
  17. Environmental and genetic risk factors for MS: an integrated review.Annals of clinical and translational neurology · 2019
    Review
  18. Lifestyle and Environmental Factors in Multiple Sclerosis.Cold Spring Harbor perspectives in medicine · 2019
    Review
  19. Article
  20. 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

9 authors at 6 institutions in 3 countries.

Marianna CorteseThe KG Jebsen Centre for MS-Research, Department of Clinical Medicine, University of Bergen, Norway/Department of Global Public Health and Primary Care, University of Bergen, Norway/Department of Nutrition, Harvard T.H. Chan School of Public Health, USA Marianna.Cortese@igs.uib.no.
Trond RiiseDepartment of Global Public Health and Primary Care, University of Bergen, Norway/The Norwegian Multiple Sclerosis Competence Center, Department of Neurology, Haukeland University Hospital, Norway.
Kjetil BjørnevikDepartment of Global Public Health and Primary Care, University of Bergen, Norway/Department of Nutrition, Harvard T.H. Chan School of Public Health, USA/The Norwegian Multiple Sclerosis Competence Center, Department of Neurology, Haukeland University Hospital, Norway.
Trygve HolmøyInstitute of Clinical Medicine, University of Oslo, Norway/Department of Neurology, Akershus University Hospital, Norway.
Margitta T KampmanDepartment of Neurology, University Hospital of North Norway, Norway.
Sandra MagalhaesDepartment of Epidemiology and Biostatistics and Occupational Health, McGill University, Canada.
Maura PugliattiDepartment of Global Public Health and Primary Care, University of Bergen, Norway/Department of Clinical and Experimental Medicine, University of Sassari, Italy/Division of Medicine, McGill University, Canada.
Christina WolfsonDepartment of Epidemiology and Biostatistics and Occupational Health, McGill University, Canada/Research Institute of the McGill University Health Centre, Canada.
Kjell-Morten MyhrThe KG Jebsen Centre for MS-Research, Department of Clinical Medicine, University of Bergen, Norway/The Norwegian Multiple Sclerosis Competence Center, Department of Neurology, Haukeland University Hospital, Norway.
University of Bergen · NOMcGill University · CAHaukeland University Hospital · NOMcGill University Health Centre · CAUniversity Hospital of North Norway · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLow vitamin D levels have been associated with an increased risk of multiple sclerosis (MS), although it remains unknown whether this relationship varies by age.

objectiveThe objective of this paper is to investigate the association between vitamin D3 supplementation through cod liver oil at different postnatal ages and MS risk.

methodsIn the Norwegian component of the multinational case-control study Environmental Factors In Multiple Sclerosis (EnvIMS), a total of 953 MS patients with maximum disease duration of 10 years and 1717 controls reported their cod liver oil use from childhood to adulthood.

resultsSelf-reported supplement use at ages 13-18 was associated with a reduced risk of MS (OR 0.67, 95% CI 0.52-0.86), whereas supplementation during childhood was not found to alter MS risk (OR 1.01, 95% CI 0.81-1.26), each compared to non-use during the respective period. An inverse association was found between MS risk and the dose of cod liver oil during adolescence, suggesting a dose-response relationship (p trend = 0.001) with the strongest effect for an estimated vitamin D3 intake of 600-800 IU/d (OR 0.46, 95% CI 0.31-0.70).

conclusionsThese findings not only support the hypothesis relating to low vitamin D as a risk factor for MS, but further point to adolescence as an important susceptibility period for adult-onset MS.

Indexed as

Dietary SupplementsRegistriesAdolescentAdultAge FactorsCase-Control StudiesCholecalciferolCod Liver OilDose-Response Relationship, DrugFemaleHumansMaleMiddle AgedMultiple SclerosisNorwayRiskCholecalciferolCod Liver Oilagecod liver oilenvironmental risk factorsMultiple sclerosissupplementationsusceptibilitytimingvitamin D

Identifiers

PMID25948625
PMCPMC4657387
OpenAlexW2127555980

What OpenQuestion 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 OpenQuestion graph.