We found that living closer to a major roadway such as an interstate highway or a state highway is associated with almost two times the risk of having a communication delay by the time the baby is 3 years old, closer. Sandie Ha More Quotes by Sandie Ha More Quotes From Sandie Ha We know that living close to major roadways -- interstate highways or state highways -- is associated with high air pollution. Sandie Ha health-news We also found that exposure to high concentration of air pollution, especially ozone, during pregnancy as well as during early life is also associated with the risk of having any developmental delay. Sandie Ha health-news It seems that the postnatal exposure is even more important than the exposure during pregnancy. Sandie Ha health-news We are not sure why that's the case. Sandie Ha health-news
