Prenatal Vitamin D Levels in Maternal Sera and Offspring Specific Learning Disorders

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dc.contributor.author Arrhenius, Bianca
dc.contributor.author Upadhyaya, Subina
dc.contributor.author Hinkka-Yli-Salomäki, Susanna
dc.contributor.author Brown, Alan S.
dc.contributor.author Cheslack-Postava, Keely
dc.contributor.author Öhman, Hanna
dc.contributor.author Sourander, Andre
dc.date.accessioned 2021-09-25T23:33:31Z
dc.date.available 2021-09-25T23:33:31Z
dc.date.issued 2021-09-23
dc.identifier.citation Arrhenius, B.; Upadhyaya, S.; Hinkka-Yli-Salomäki, S.; Brown, A.S.; Cheslack-Postava, K.; Öhman, H.; Sourander, A. Prenatal Vitamin D Levels in Maternal Sera and Offspring Specific Learning Disorders. Nutrients 2021, 13, 3321.
dc.identifier.uri http://hdl.handle.net/10138/334614
dc.description.abstract Recent evidence has suggested potential harmful effects of vitamin D deficiency during pregnancy on offspring brain development, for example, elevated risks for neuropsychiatric disorders. Findings on general cognition and academic achievement are mixed, and no studies have examined the effect of prenatal 25-hydroxyvitamin D (25(OH)D) levels on diagnosed specific learning disorders, which was the aim of this study. We examined a nested case–control sample from the source cohort of all singleton-born children in Finland between 1996 and 1997 (<i>n</i> = 115,730). A total of 1607 cases with specific learning disorders (mean age at diagnosis: 9.9 years) and 1607 matched controls were identified from Finnish nationwide registers. Maternal 25(OH)D levels were analyzed from serum samples collected during the first trimester of pregnancy and stored in a national biobank. Conditional logistic regression was used to test the association between maternal 25(OH)D and offspring specific learning disorders. There were no significant associations between maternal 25(OH)D levels and specific learning disorders when vitamin D was examined as a log-transformed continuous variable (adjusted OR 0.98, 95% CI 0.82–1.18, <i>p</i> = 0.84) or as a categorical variable (25(OH)D &lt; 30 nmol/L: adjusted OR 1.03, 95% CI 0.83–1.28, <i>p</i> = 0.77 compared to levels of &gt;50 nmol/L), nor when it was divided into quintiles (adjusted OR for the lowest quintile 1.00, 95% CI 0.78–1.28, <i>p</i> = 0.99 compared to the highest quintile). This study found no association between low maternal 25(OH)D in early pregnancy and offspring specific learning disorders.
dc.publisher Multidisciplinary Digital Publishing Institute
dc.title Prenatal Vitamin D Levels in Maternal Sera and Offspring Specific Learning Disorders
dc.date.updated 2021-09-25T23:33:31Z
dc.type.uri http://purl.org/eprint/entityType/JournalArticle
dc.type.uri http://purl.org/eprint/entityType/Expression
dc.type.uri http://purl.org/eprint/entityType/Expression

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