Cited by 163Vitamin D Research StudiesAutism Spectrum Disorder ResearchSexual Differentiation and Disorders

Autism Spectrum Disorder and low vitamin D at birth: A sibling control study

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Fernell, Elisabeth, Bejerot, Susanne, Westerlund, Joakim, Miniscalco, Carmela, Simila, Henry, Eyles, Darryl, Gillberg, Christopher, Humble, Mats B·2015·Molecular Autism

Abstract

BACKGROUND: Insufficient vitamin D activity has attracted increasing interest as a possible underlying risk factor in disorders of the central nervous system, including autism. METHODS: In this study, 25-hydroxyvitamin D (25(OH)D) was analysed in 58 Sweden-born sibling pairs, in which one child had autism spectrum disorder (ASD) and the other did not. The study group consisted of two representative samples; 47 Gothenburg sibling pairs with mixed ethnicities and 11 Stockholm sibling pairs with Somali background. 25(OH)D levels were analysed in the stored dried blood spots taken in the neonatal period for metabolic screening. RESULTS: The collapsed group of children with ASD had significantly lower vitamin D levels (M = 24.0 nM, SD = 19.6) as compared with their siblings (M = 31.9 nM, SD = 27.7), according to a paired samples t-test (P = 0.013). The difference was - most likely - not only accounted for by a difference in season of birth between ASD and non-ASD siblings since the mean 25(OH)D levels differed with similar effect size between the sibling pairs born during winter and summer, respectively. All children with African/Middle East background, both the children with ASD and their non-ASD siblings, had vitamin D deficiency. CONCLUSIONS: The findings suggest that low prenatal vitamin D may act as a risk factor for ASD, however, there is a need for replication with larger samples. Future research should study whether or not adequate supplementation of vitamin D to pregnant women might lower the risk for ASD in the offspring.

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Crossref · 10.1186/2040-2392-6-3

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  • Fennell et al. (2015) did not find any seasonal deviations for ASD populations from typically developing controls of Middle Eastern/African origin, though the season of birth difference was significant in cases and controls of Swedish origin (38% in spring vs. 18% in summer; p < 0.05).

    “For instance, Fennell et al. (2015) did not find any seasonal deviations for ASD populations from the typically developing controls of Middle Eastern/African origin, though the season of birth difference was significant in cases and controls of Swedish origin (38% in spring vs. 18% in summer; p < 0.05) [78].”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [78]

  • Inclusion of older siblings may confound the findings by younger parental age, and inclusion of apparently healthy younger siblings may risk including siblings with ASD who may develop ASD later in life in the control group.

    “Furthermore, inclusion of older siblings may confound the findings by younger parental age, and inclusion of apparently healthy younger siblings, on the other hand, may run the risk of including siblings with ASD who may develop ASD later in life in the control group [78,108].”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [78]

  • Fernell et al. (2015) did not find any differences between cases and controls of Middle Eastern/African origin.

    “On the other hand, the authors did not find any differences between cases and controls of Middle Eastern/African origin.”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [78]

  • In Fernell et al., season of birth corresponded to the season of blood sampling and was not controlled for in statistical analysis.

    “Season of birth which corresponded to the season of blood sampling in this study was not controlled for in statistical analysis.”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [78]

  • Season of birth was not significantly different between cases and controls in the Middle Eastern/African groups, but it was significantly different across groups of Scandinavian and other European origins (10% vs. 35% of cases and controls in summer).

    “It should be also noted that season of birth was not significantly different between cases and controls in the latter ethnic groups, but it was significantly different across groups of Scandinavian and other European origins (10% vs. 35% of cases and controls in summer, respectively).”

    From Vitamin D and Autism Spectrum Disorder: A Literature Review (2016) · cites this paper as [78]

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Research works printed but not linked: 2

  1. [3]Coleman M Gillberg C The Autisms 2012 Oxford Oxford University Press
  2. [38]Dijkstra SH van Beek A Janssen JW de Vleeschouwer LH Huysman WA van den Akker EL High prevalence of vitamin D deficiency in newborn infants of high-risk mothers. Arch Dis Child. 2007;92:750–3. Erratum in Arch Dis Child 2007 92 1049 PMC2084031 17715438

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Authors
Fernell, E., Bejerot, S., Westerlund, J., Miniscalco, C., Simila, H., Eyles, D., Gillberg, C., & Humble, M. B.
Affiliations
  • Skaraborg Hospital (SE)
  • Örebro University (SE)
  • Stockholm University (SE)
  • University of Gothenburg (SE)
  • The University of Queensland (AU)
Corresponding author
Fernell, Elisabeth
Venue
Molecular Autism
Published
2015
Volume
6
Issue
1
Pages
3
ISSN
2040-2392 (ISSN-L)
OpenAlex
W2135493800
Cited by
160
References
68
Citations by year
2026: 1 · 2025: 9 · 2024: 10 · 2023: 16 · 2022: 11 · 2021: 9 · 2020: 23 · 2019: 13 · 2018: 18 · 2017: 29 · 2016: 17 · 2015: 4
FWCI
18.00
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Molecular Autism (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion)
  • Örebro University (Örebro University) (submittedVersion, other-oa)
Funders
  • Vetenskapsrådet (523-2011-3646)
  • LifeWatch – Niclas Öberg Foundation
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Vitamin D Research Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
Keywords
autism spectrum disorder, vitamin D deficiency, 25-hydroxyvitamin D, prenatal vitamin D, neonatal dried blood spots, sibling pairs, season of birth, Somali children, vitamin D supplementation in pregnancy, risk factors

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