Small unseen particles in air pollution inhaled by pregnant women may damage the cardiovascular system of the unborn baby and delay its growth and development, according to a study unveiled on 11 March.
Researchers from Rutgers University in the US found that early first trimester and late third trimester were critical windows during which pollutants most affect the mother's and foetus' cardiovascular systems.
"These findings suggest that pregnant women, women of child-bearing years who may be pregnant and those undergoing fertility treatments should avoid areas known for high air pollution or stay inside on high-smog days to reduce their exposure," said Phoebe Stapleton, an assistant professor at Rutgers University.