News from ISGlobal
Environmental exposure to nitrogen dioxide (NO2) during pregnancy and to a lesser extent after birth, is associated with impairment of attentional function in boys and girls evaluated at 4 or 5 years of age. This was the conclusion of a new study by ISGlobal.
NO2 is one of the pollutants found in the air we breathe in cities, produced mainly by vehicular traffic. The INMA - Infancia y Medio Ambiente (Environment and Childhood) project studied almost 1,300 boys and girls from birth cohorts in Valencia, Sabadell, Asturias and Guipúzcoa from the prenatal period up to 4 or 5 years of age, between 2003 and 2008. Prenatal and postnatal NO2 levels were measured in the participant’s homes, and attention function was measured at age 4 or 5 using the Conners Kiddie Continuous Performance Test (K-CPT).
The study, which has been published in Environment International, found that higher exposure to NO2, mainly during pregnancy and to a lesser extent during the postnatal period, was associated with a delay of almost 2 months in the development of attentional function in the children studied.
Prenatal and postnatal exposure to NO2 and child attentional function at 4-5 years of age. Sentís A, Sunyer J, Dalmau-Bueno A, Andiarena A, Ballester F, Cirach M, Estarlich M, Fernández-Somoano A, Ibarluzea J, Íñiguez C, Lertxundi A, Tardón A, Nieuwenhuijsen M, Vrijheid M, Guxens M; INMA Project. Environ Int. 2017 Jul 6; 106:170-177.