Severe air pollution can speed up neurodegeneration when the brain is at the peak of its development—during childhood.
https://www.citylab.com/environment/2019/09/how-air-pollution-in-megacities-is-poisoning-childrens-brains/598981/?utm_medium=social&utm_campaign=citylab&utm_source=twitter&utm_term=2019-09-30T20%3A42%3A51&utm_content=edit-promo
@Shashi Our information is now over two years old but we did a health update to the California Air Resources Board on this topic in April 2017.
https://ww3.arb.ca.gov/research/health/healthup/healthup.htm