Air purifiers have prevented the decline in intelligence in children
Scientists at Simon Fraser University (Canada) have shown that the presence of a portable air purifier in the house prevents the decline in intelligence due to the negative effects of air pollution on brain development in children. The results of scientific work are published in the journal Environmental Health Perspectives. Briefly about them is described in a press release on MedicalXpress.
540 pregnant women from Ulaanbaatar (Mongolia) took part in a study to investigate the relationship between pregnancy and air pollution. The women were less than 18 weeks pregnant, were non-smokers, and had not previously used air filtration devices in their homes. The participants were randomly assigned to either the control group or the intervention group, which were provided with one or two high efficiency air cleaners (HEPA) filters. Women were advised to use air purifiers continuously throughout their pregnancy, and the devices were removed from the home after the baby was born.
Later, the scientists measured the full-scale intelligence quotient (FSIQ) of the children born (who were four years old) using the Wechsler test. It turned out that children born to mothers who used air purifiers had an average FSIQ score of 2.8 points higher than in the control group.
Children in the intervention group also had significantly higher mean verbal comprehension scores, consistent with previous observational studies. Research shows that a child’s verbal skills may be particularly sensitive to exposure to air pollution. The results of the work demonstrate that reducing exposure to air pollution during pregnancy can improve the cognitive development of children around the world.