Infants whose mothers were exposed to higher levels of tiny air pollution particles during pregnancy are much more likely to develop asthma, according to research. The study analysed the impact of ultra-fine particles (UFPs), which are not regulated by governments. These are thought to be even more toxic than the larger particles that are routinely monitored and have also been linked to asthma. Air pollution particles were also recently discovered on the foetal side of placentas. A study in Toronto in 2019 also linked in-utero UFP exposure to asthma and studied a much larger group of 160,000 children.

Source: The Guardian May 21, 2021 12:00 UTC