The association of maternal prenatal vitamin D levels and child current wheeze

Wheezing is common in early childhood and is associated with subsequent asthma and decreased lung function.1 Prenatally, vitamin D influences immune system and lung development; a role in consequent child wheeze and asthma has been hypothesized.2,3 Previous research has reported associations between 25-dihydroxyvitamin D [25(OH)D] levels and respiratory or atopic outcomes potentially inconsistent by race.4 In this study we examine associations between maternal second trimester and delivery 25(OH)D levels and child current wheeze in the third year of life by maternal race.

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