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A new study has shown that children born to women who consumed foods rich in vitamin D during pregnancy had a lower risk of allergies and hay fever. However, taking vitamin D supplements during pregnancy was not shown to have the same effect.
This study followed about 1,200 mothers and their children over the course of seven years. A prenatal diet with higher vitamin D levels – which equaled the amount in a glass of milk each day – was associated with a 20% lower risk of hay fever in children once they reached school age. This study could influence nutritional counseling to include recommendations for pregnant women to add vitamin D-rich foods into their diets.
These findings were published in the CDC’s Journal of Allergy and Clinical Immunology on February 11, 2016.