Health

Study strengthens evidence of link between air pollution and child brain development

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The results of estimating the impact of air pollution on the total value of the Children’s Problems and the IQ of children (male and female) were presented to participants from three U.S. pregnancy groups in the ECHO-PATHWAYS Consortium (study CANDLE, TIDES, and GAPPS) . NO2 and PM2.5 in each window were reduced to an additional 2 units. i of children, the age of the children in the calculation of the result, the place of study, the race of the children, the pedagogy, the area changed – and the inflation. matching household income, household, relationship between household and income, marital status, age at birth, birth control, smoking, alcohol consumption, maternal sadness, maternal IQ, smoking appearance by hand, the Indexididdigar Children’s (and educational and economic opportunities areas) in the corresponding windows with the appearance of PM2.5 and NO2. The CBCL indicator was also included in the analysis of the Total Problems. The P-value indicates the significance of the interaction time. The triangles and circles indicate the value of the result, the error bars indicate a confidence interval of 95%, and the dotted lines indicate a negative value. Numerical data (including the sample size of each group) are shown in Table S3. Note: CANDLE, Conditions Affecting Neurocognitive Development and Learning in Strengthening Children; CBCL, Child Behavior List; ECHO, Environmental Impact on Child Health Outcomes; GAPPS, the International Association for the Prevention of Prematurity and Reproduction; IQ, cognitive value; TIDES, Infant and Environmental Development Study. Credit: Environmental Health Practices (2022). DOI: 10.1289 / EHP10248

Air pollution is not just a problem for the lungs. In addition, research has shown air pollution can affect children’s behavioral problems and even IQ. A new study led by the University of Washington adds that airborne and postpartum airborne infections can harm children.

The study, published in Environmental Health Practicesfound that children and their mothers received higher levels of nitrogen dioxide (NO)2) manifestations during pregnancy, especially in the early stages second trimesterthey were more likely to get behavioral problems.

Researchers have also reported a higher appearance of small-particles air pollution (PM2.5) when children between the ages of two and four are associated with a lack of early childhood cognitive function and cognitive function.

“Even in cities like Seattle or San Francisco, those that are congested but where levels of pollution They are still a little less, we found that children with a high birth weight NO2 exposed to additional behavioral problems, especially with NO2 appearing in the first and second months, ”said Yu Ni, a writer-writer and lecturer in the Department of Environmental Science and Occupational Health.

The study included data collected from 1,967 mothers taken during pregnancy from six cities: Memphis, Tennessee; Minneapolis; Rochester, NY; San Francisco; two in Washington, Seattle and Yakima. Basically, these participants were included as part of three different studies: CANDLE, GAPPS and TIDES. The three studies are part of a larger NIH program called ECHO, which brings together multiple pregnancy groups to address child health issues. These three joint ventures are known as ECHO PATHWAYS.

The study used a modern model of air pollution levels in the United States over time and space developed at the University of Washington. Using participant address information, the researchers were able to assess the appearance of each mother and child during pregnancy and the beginning of her childhood.

Explanation for NO2 and PM2.5 pollution a early life It is important to understand, I say, because “there are well-known biological mechanisms that can link maternal respiration of these pollutants to harm to the uterus and fetal brain development. “

Furthermore, once a child is born, the first few years are an important period of continuous brain development as the number of nerve endings breaks down and the brain reaches 90% of its future size, studies have written. Domin small childrenair pollution that penetrates deep into the lungs and enters the central nervous system can cause damage in areas that are prone to functional and cognitive impairment.

“This study reinforces the specific vulnerability of children to air pollution — both in fetal life where major organ and functional development occurs and in adolescence when these processes develop. can have a lasting impact on the brain function of life. This study emphasizes. The importance of air pollution as a potential risk factor for the development of young children, “said lead author Dr. Catherine Karr, professor at the UW School of Public Health and School of Medicine.

In particular, the researchers found that the appearance of PM2.5 pollution in general is associated with more behavioral problems in girls than in men, and the negative impact of PM2.5 exposed in the second trimester on IQ is stronger in boys.

“We hope the evidence in this study will contribute to policy formulation in the future,” Ni said. “In terms of air pollution reduction, the United States has come a long way under the air pollution law, but there is a threat of continuing to improve the country’s air quality. Evidence suggests that there is a reason to reduce air pollution even further. better understand the vulnerability of pregnant women and children. ”


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Learn more:
Yu Ni et al, Pre- and Postpartum Pollution Associations with Children’s Behavioral and Cognitive Behavior Problems: A Study by several American Associations, Environmental Health Practices (2022). DOI: 10.1289 / EHP10248

hintThe study reinforces evidence of a link between air pollution and brain development in children (2022, July 13) retrieved 13 July 2022 from https://medicalxpress.com/news/2022-07-evidence-link-air-pollution-child .html

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