Research published in the Journal of Clinical Endocrinology and Metabolism reports that gestational exposure to air pollution, especially in the third trimester, may contribute to lower vitamin D levels in infants.
Past research suggests air pollution may influence vitamin d levels in children and adults, however, until now researchers haven’t focused on exposure during prenatal life.
Dr Nour Baiz and colleagues examined the association between gestational exposure to air pollutants and cord blood vitamin D status in 375 mother-infant pairs.
The researchers found that maternal exposure to nitrogen dioxide and particular matter less than 10 micro meters, commonly experienced in an urban setting, throughout the pregnancy was associated with low infant vitamin D status. The trend was strongest for pollutant exposure during the third trimester of pregnancy.
Baiz N, Dargent-Molina P, Wark JD, Souberbielle JC, Slama R, Annesi-Maesano I. Gestational exposure to urban air pollution related to a decrease in cord blood vitamin D levels. Journa of Clinical Endocrinology & Metabolism. August 2012.