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American Focus > Blog > Health and Wellness > Exposure to certain pollution sources harms children’s learning and memory, study shows
Health and Wellness

Exposure to certain pollution sources harms children’s learning and memory, study shows

Last updated: November 1, 2024 10:36 am
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Exposure to certain pollution sources harms children’s learning and memory, study shows
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A recent study conducted by the University of Southern California (USC) involving 8,500 children from various parts of the country has shed light on the negative impact of air pollution on learning and memory in 9 and 10 year-olds. The study specifically points to fine particle air pollution, known as PM2.5, and its component, ammonium nitrate, as culprits in causing cognitive impairments in children.

Ammonium nitrate, a byproduct of agricultural emissions and fossil fuel combustion, has been linked to Alzheimer’s and dementia risk in adults, indicating that PM2.5 could potentially cause neurocognitive harm throughout one’s lifespan. This revelation underscores the importance of delving deeper into the sources and chemical components of particulate matter to inform air quality regulations and comprehend the long-term effects on brain health.

Lead author of the study, Megan Herting, who is an associate professor at the Keck School of Medicine of USC, emphasizes the need for further research on particulate matter sources to better understand the nuances that contribute to neurocognitive effects. Herting has been utilizing data from the Adolescent Brain Cognitive Development Study (ABCD), the largest brain study in America, to investigate the impact of PM2.5 on brain function.

PM2.5, a hazardous air pollutant composed of dust, soot, organic compounds, and metals, can penetrate deep into the lungs and enter the bloodstream, posing serious health risks. While fossil fuel combustion remains a significant source of PM2.5, other contributors such as wildfires, agriculture, marine aerosols, and chemical reactions also play a role in polluting the air.

In a previous study published in 2020, Herting and her team explored the overall impact of PM2.5 on children’s cognition but did not find a definitive relationship. However, by examining 15 chemical components of PM2.5 in this latest study, they identified that ammonium nitrate, primarily stemming from agricultural activities, was strongly associated with poorer learning and memory performance in children.

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Moving forward, the researchers aim to investigate how these pollutant mixtures and sources correlate with individual differences in brain development during childhood and adolescence. By gaining a deeper understanding of the specific components of air pollution that harm cognitive function, policymakers can implement targeted strategies to mitigate the adverse effects on children’s brain health.

The study, published in Environmental Health Perspectives, provides valuable insights into the detrimental effects of air pollution on learning and memory in children, urging for more comprehensive research and regulatory measures to safeguard cognitive development in the younger population.

TAGGED:childrensexposureharmsLearningmemoryPollutionShowssourcesStudy
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