The new Chinese research relates the prolonged exposure to air pollution with a high risk of developing autism in children.
A team from the Chinese Academy of Sciences, in collaboration with the University of Birmingham (United Kingdom) and McGill University (Canada), investigated the relationship between prolonged exposure to atmospheric pollution e autism spectrum disorders (TSA) in children in developing countries.
The researchers examined 124 children with ASD and 1,240 children who did not (control group) at different times over a period of 9 years.
The study focuses on three topics in particular: PM1, PM2.5 and PM10, fine particles suspended in the air from factories, silencers, construction activities and road dust.
The finer the particles, the more they enter the lungs to enter the blood, from where they cause many disorders.
PM1 is the thinnest particle, followed by PM2.5 and PM10. Few studies have been carried out on these particles and there are few safety standards.
Published in the journal Medioambiente Internacional, the results of the researchers show that theexposure Particles (PM2.5) from birth to three years of age would produce one risk development of TSA more 78%.
These results are consistent with previous findings that link the prenatal exposure to atmospheric pollution with ASD in children.
"The causes of autism are complex and enough is not yet understood environmental factors Every time they are more in account. They are besides other factors, genetic"explains Professor Zhiling Guo, author of this study."Childhood brain development is more vulnerable to toxic exposure to the environment. Several studies have suggested that this can have an effect on the functioning of the brain and the immune system. This could explain the detected connection between contaminants and ASD. But more research is needed to explore the relationship between atmospheric pollution and the mental health in general".
Associate professor Yuming Guo of the University of Monash in Australia comments on these observations: "The serious effects on the health of atmospheric pollution are well known and there is no safe limit for exposure. Even exposure to a small amount of fine particles can lead to premature births, learning delays and health problems, including heart failure".