{"id":76347,"date":"2025-03-28T13:00:18","date_gmt":"2025-03-28T17:00:18","guid":{"rendered":"https:\/\/world.edu\/?p=76347"},"modified":"2025-03-28T13:00:18","modified_gmt":"2025-03-28T17:00:18","slug":"early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research","status":"publish","type":"post","link":"https:\/\/world.edu\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\/","title":{"rendered":"Early exposure to air pollution could affect brain development and mental health later in life: new research"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-76348\" src=\"https:\/\/world.edu\/wp-content\/uploads\/2025\/03\/air_pollution_og.jpg\" alt=\"\" width=\"680\" height=\"340\" srcset=\"https:\/\/world.edu\/wp-content\/uploads\/2025\/03\/air_pollution_og.jpg 680w, https:\/\/world.edu\/wp-content\/uploads\/2025\/03\/air_pollution_og-250x125.jpg 250w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><\/p>\n<p>Exposure to air pollution in early life could have lasting effects on\u00a0<a href=\"https:\/\/doi.org\/10.1016\/j.scitotenv.2022.160234\">child development<\/a>\u00a0and\u00a0<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC11134215\/\">mental health in adolescence<\/a>, according to our recent\u00a0<a href=\"https:\/\/doi.org\/10.1016\/j.envres.2025.121148\">study<\/a>.<\/p>\n<p>We integrated air pollution data with existing longitudinal data from the Christchurch Health and Development Study (<a href=\"https:\/\/www.otago.ac.nz\/christchurch\/research\/healthdevelopment\">CHDS<\/a>). The CHDS has followed more than 1,200 children born in the city in 1977, with a strong focus on developmental and mental health outcomes.<\/p>\n<p>Our aim was to examine how exposure to air pollution shapes development and mental health in later childhood and adolescence. We found an increased risk of attention problems, conduct issues, lower educational attainment and substance abuse in adolescence associated with higher exposure.<\/p>\n<p>Existing evidence often focuses on adulthood. However, by tracking air pollution exposure from the prenatal period to the age of ten, and linking this data to subsequent cognitive and mental health outcomes, we were able to highlight the long-term consequences of\u00a0<a href=\"https:\/\/www.nzherald.co.nz\/nz\/kids-in-deprived-neighbourhoods-exposed-to-dirtier-air-nz-first-analysis-shows\/PKIDTX3WBRAPNI7AXXJ3QA2NDE\/\">growing up in polluted environments<\/a>.<\/p>\n<p><a href=\"https:\/\/www.who.int\/health-topics\/air-pollution#tab=tab_1\">Air pollution<\/a>\u00a0is one of the leading environmental contributors to disease, especially\u00a0<a href=\"https:\/\/ajph.aphapublications.org\/doi\/full\/10.2105\/AJPH.2017.303839\">respiratory<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.escardio.org\/Journals\/E-Journal-of-Cardiology-Practice\/Volume-22\/air-pollution-a-new-risk-factor-for-cardiovascular-disease\">cardiovascular<\/a>\u00a0conditions. Children are especially\u00a0<a href=\"https:\/\/doi.org\/10.1016\/j.dcn.2024.101436\">vulnerable<\/a>\u00a0to air pollution because their brains and bodies are developing.<\/p>\n<p>A growing body of evidence suggests air pollution could affect\u00a0<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S001393512500619X\">brain development<\/a>,\u00a0<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0160412024000862\">educational attainment<\/a>\u00a0and mental health, contributing to\u00a0<a href=\"https:\/\/ehp.niehs.nih.gov\/doi\/full\/10.1289\/EHP4595\">depression<\/a>,\u00a0<a href=\"https:\/\/ehp.niehs.nih.gov\/doi\/full\/10.1289\/EHP4595\">anxiety<\/a>\u00a0and conduct or attention problems. Despite this,\u00a0<a href=\"https:\/\/doi.org\/10.1016\/j.scitotenv.2022.160234\">few studies<\/a>\u00a0have tracked long-term exposure to air pollution from early childhood.<\/p>\n<h4><strong>Patterns of exposure<\/strong><\/h4>\n<p>We chose to conduct this research in Christchurch because the city is a\u00a0<a href=\"https:\/\/www.researchgate.net\/publication\/41537932_The_air_pollution_problem_in_Christchurch_New_Zealand_-_progress_and_prospects\">historical air-pollution hotspot<\/a>, with a\u00a0<a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/j.1745-7939.1985.tb01073.x\">documented history<\/a>\u00a0of measurements, and because of its long-running birth cohort study.<\/p>\n<p>The CHDS collects detailed information on participants\u2019 health, development, education and family backgrounds from prenatal into adulthood.<\/p>\n<p>For this study, we linked\u00a0<a href=\"https:\/\/doi.org\/10.1016\/j.sste.2024.100675\">historical air-pollution data<\/a>, measured as the concentration of black smoke from 1977 to 1987, to residential locations of birth cohort members. This allowed researchers to estimate each child\u2019s annual exposure to air pollution during key developmental periods.<\/p>\n<p>We found four distinct patterns of air-pollution exposure across childhood (see graph below):<\/p>\n<ul>\n<li>consistently low (these children had the lowest levels of air pollution throughout childhood)<\/li>\n<li>consistently high (this groups had the highest levels of air pollution from birth to the age of ten)<\/li>\n<li>elevated preschool (exposure peaked between ages three to six and then declined)<\/li>\n<li>high prenatal and postnatal (high exposure before and immediately after birth, but declining later).<\/li>\n<\/ul>\n<p>We then examined whether children in the higher exposure groups were more likely to experience adverse impacts on cognition, educational achievement and mental health in later childhood and adolescence.<\/p>\n<p>We adjusted for a range potential confounders such as socioeconomic status, neighbourhood disadvantage and parental characteristics.<\/p>\n<p>We found children with elevated pre-school exposure had poorer educational attainment and a higher likelihood of conduct disorders and substance abuse problems. High prenatal and postnatal exposure was linked to a greater risk of attention problems as well as substance abuse in adolescence.<\/p>\n<p>Children with persistently high air-pollution exposure were more likely to develop attention problems and had higher odds of substance abuse issues in adolescence.<\/p>\n<div id=\"attachment_76349\" style=\"width: 690px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-76349\" class=\"size-full wp-image-76349\" src=\"https:\/\/world.edu\/wp-content\/uploads\/2025\/03\/agePollution.jpg\" alt=\"\" width=\"680\" height=\"721\" srcset=\"https:\/\/world.edu\/wp-content\/uploads\/2025\/03\/agePollution.jpg 680w, https:\/\/world.edu\/wp-content\/uploads\/2025\/03\/agePollution-236x250.jpg 236w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><p id=\"caption-attachment-76349\" class=\"wp-caption-text\">Researchers identified four different trajectory patterns of exposure to air pollution from the prenatal period through to the age of ten. Author provided, CC BY-SA<\/p><\/div>\n<h4><strong>What these findings mean<\/strong><\/h4>\n<p>The effects of air pollution on several outcomes were small at an individual level, but they could be highly important at a population level.<\/p>\n<p>This is because even small shifts in cognitive and mental health outcomes, when applied to entire populations of children exposed to poor air quality, could have major consequences affecting future educational achievement, workforce productivity and public health burdens.<\/p>\n<p>These findings support previous research suggesting air pollution could affect brain function by causing\u00a0<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC2743793\/\">inflammation<\/a>,\u00a0<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36280190\/\">oxidative stress<\/a>\u00a0and affecting\u00a0<a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/dmcn.14758\">neurodevelopmental pathways<\/a>. Importantly, they reinforce the idea that certain developmental periods, such as the prenatal period and early childhood, may be especially sensitive to pollution exposure.<\/p>\n<p>We need further research to confirm our findings but potential considerations include reducing children\u2019s exposure to air pollution and improving urban air quality by cutting emissions from vehicles, industry and residential heating.<\/p>\n<p>We should also promote cleaner energy sources to decrease exposure to harmful pollutants such as nitrogen dioxide and fine particulate matter. Providing better access to\u00a0<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0160412024008109\">green spaces<\/a>\u00a0may\u00a0<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0160412019319683\">mitigate the impact of air pollution<\/a>.<\/p>\n<p>To strengthen public health and policy measures, we need stricter air quality regulations, particularly around schools and childcare centres. We should also implement air-quality monitoring in urban areas to identify high-risk zones for children.<\/p>\n<p>Better public information is crucial to minimise indoor and outdoor pollution exposure. This could include the use of air purifiers for indoor activies or limiting outdoor exposure during peak pollution periods.<\/p>\n<h4><strong>Further research and action<\/strong><\/h4>\n<p>Our study highlights the need for more research on air pollution\u2019s effects on children\u2019s mental health and cognition, particularly in different environmental and socioeconomic contexts.<\/p>\n<p>Policymakers, educators and healthcare professionals must consider air pollution as a potential risk factor for developmental challenges, not just a physical health concern.<\/p>\n<p>Air pollution may not be visible in the same way as poor housing or inaccessible healthcare, but its impact on child development could be important at a population level.<\/p>\n<p>Given the rising prevalence of mental ill health in young people and adults, tackling air pollution could be an overlooked but essential public health strategy for protecting future generations.<\/p>\n<p><em><strong>Author Bios:<\/strong> Matthew Hobbs is Associate Professor and Transforming Lives Fellow in Spatial Data Science and Planetary Health at Sheffield Hallam University, Joseph Boden is Professor of Psychology, Director of the Christchurch Health and Development Study at the University of Otago, Lianne Jane Woodward is Professor of Child Developmental Psychology at the University of Canterbury and Susie (Bingyu) Deng is a Postdoctoral Research Associate in Health Sciences at the University of Liverpool<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Exposure to air pollution in early life could have lasting effects on\u00a0child development\u00a0and\u00a0mental health in adolescence, according to our recent\u00a0study. We integrated air pollution data with existing longitudinal data from the Christchurch Health and Development Study (CHDS). The CHDS has followed more than 1,200 children born in the city in 1977, with a strong focus [&hellip;]\n&hellip; <a href=\"https:\/\/world.edu\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\/\" class=\"more\">learn more&rarr;<\/a><\/p>","protected":false},"author":33,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[128],"tags":[6911],"coauthors":[11733],"class_list":["post-76347","post","type-post","status-publish","format-standard","hentry","category-environment","tag-air-pollution"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Early exposure to air pollution could affect brain development and mental health later in life: new research - World leading higher education information and services<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/world.edu\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\/\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:locale\" content=\"en_US\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:type\" content=\"article\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:title\" content=\"Early exposure to air pollution could affect brain development and mental health later in life: new research - World leading higher education information and services\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:description\" content=\"Exposure to air pollution in early life could have lasting effects on\u00a0child development\u00a0and\u00a0mental health in adolescence, according to our recent\u00a0study. We integrated air pollution data with existing longitudinal data from the Christchurch Health and Development Study (CHDS). The CHDS has followed more than 1,200 children born in the city in 1977, with a strong focus [&hellip;]\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:url\" content=\"https:\/\/world.edu\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\/\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:site_name\" content=\"World leading higher education information and services\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-28T17:00:18+00:00\" class=\"yoast-seo-meta-tag\" \/>\n<meta property=\"og:image\" content=\"https:\/\/world.edu\/wp-content\/uploads\/2025\/03\/air_pollution_og.jpg\" class=\"yoast-seo-meta-tag\" \/>\n\t<meta property=\"og:image:width\" content=\"680\" class=\"yoast-seo-meta-tag\" \/>\n\t<meta property=\"og:image:height\" content=\"340\" class=\"yoast-seo-meta-tag\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" class=\"yoast-seo-meta-tag\" \/>\n<meta name=\"author\" content=\"Kevin\" class=\"yoast-seo-meta-tag\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" class=\"yoast-seo-meta-tag\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kevin\" class=\"yoast-seo-meta-tag\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" class=\"yoast-seo-meta-tag\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" class=\"yoast-seo-meta-tag\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/world.edu\\\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/world.edu\\\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\\\/\"},\"author\":{\"name\":\"Kevin\",\"@id\":\"https:\\\/\\\/world.edu\\\/#\\\/schema\\\/person\\\/42c1c1d5ff7ffbdf0bd50ed94c6ae6ee\"},\"headline\":\"Early exposure to air pollution could affect brain development and mental health later in life: new research\",\"datePublished\":\"2025-03-28T17:00:18+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/world.edu\\\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\\\/\"},\"wordCount\":969,\"image\":{\"@id\":\"https:\\\/\\\/world.edu\\\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/world.edu\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/air_pollution_og.jpg\",\"keywords\":[\"air pollution\"],\"articleSection\":[\"Environment\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/world.edu\\\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\\\/\",\"url\":\"https:\\\/\\\/world.edu\\\/early-exposure-to-air-pollution-could-affect-brain-development-and-mental-health-later-in-life-new-research\\\/\",\"name\":\"Early exposure to air pollution could affect brain development and mental health later in life: new research - 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