Antenatal vitamin D supplementation via breast milk shields development of infantile atopic eczema

A recent trial found that antenatal cholecalciferol supplementation has a protective effect on the risk of infantile atopic eczema through increased breast milk secretions of cholecalciferol. The trial results were published in the British Journal of Dermatology.  

Atopic eczema is a chronic inflammatory health condition that originates in utero. Maternal vitamin D supplementation during pregnancy increased vitamin D activity in breast milk. As there is uncertainty if prenatal maternal vitamin D supplementation is associated with the offspring's risk of atopic eczema, researchers conducted a double-blind, randomized placebo-controlled trial to examine the influence of maternal cholecalciferol supplementation during pregnancy on the risk of atopic eczema in the offspring at ages 12, 24 and 48 months. 

Using data from the UK Maternal Vitamin D Osteoporosis Study (MAVIDOS) pregnant women were randomly allocated to either cholecalciferol 1000 IU per day or matched placebo, taken from around 14 weeks gestation until delivery. the primary outcome was the neonatal whole-body bone mineral content. based on the UK Working Party criteria for the definition of atopic dermatitis, the prevalence of atopic eczema in the offspring was ascertained at ages 12 (n = 635), 24 (n = 610), and 48 (n = 449) months. There were 635 infants at 12 months of age, 610 infants at 24 months of age, and 449 infants at 48 months of age.