{"id":18468,"date":"2025-05-07T17:05:40","date_gmt":"2025-05-07T11:35:40","guid":{"rendered":"https:\/\/www.aqi.in\/blog\/air-pollution-and-parkinsons-disease\/"},"modified":"2025-05-07T17:05:40","modified_gmt":"2025-05-07T11:35:40","slug":"air-pollution-and-parkinsons-disease","status":"publish","type":"post","link":"https:\/\/www.aqi.in\/blog\/en-in\/air-pollution-and-parkinsons-disease\/","title":{"rendered":"The Hidden Link Between Air Pollution and Parkinson\u2019s Disease: What the Study Shows?"},"content":{"rendered":"\n<p>You have noticed your grandparents\u2019 hands tremble as they try to hold a coffee mug, or your neighbour, barely 60, moves more slowly than usual, struggling with stiffness. These could be signs of Parkinson\u2019s disease, a condition that affects how the brain controls movement. It\u2019s tough to watch, and even tougher to live with. But what if something as common as the air we breathe\u2014polluted by car exhaust\u2014could be increasing the risk of Parkinson\u2019s? A new study has uncovered a startling connection between air pollution and Parkinson\u2019s Disease, especially for people with certain genes. Let\u2019s start with the basic information about the PD and how the study has helped in the findings. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What\u2019s Parkinson\u2019s Disease?<\/h2>\n\n\n\n<p>Do you know your brain is a control centre for your body\u2019s movements? Parkinson\u2019s happens when the brain starts losing cells that produce dopamine, a chemical that helps you move smoothly. This leads to symptoms like shaky hands, stiff muscles, slow steps, and trouble balancing. For reference, it is like the normal wiring in the brain gets frayed, making everyday easy tasks harder. While Parkinson\u2019s often shows up in older adults, it\u2019s not just about ageing. Genetics play a role, but the environment\u2014like the air around us\u2014might be a bigger factor than we thought.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Study: Digging into Air Pollution and Parkinson\u2019s Disease<\/h2>\n\n\n\n<p>A group of researchers, including Dayoon Kwon and Beate Ritz, published a study in <a href=\"https:\/\/jamanetwork.com\/journals\/jamanetworkopen\/fullarticle\/2831648\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"><em>JAMA Network Open<\/em> that<\/a>\u2019s turning heads. They wanted to know if traffic-related <a href=\"https:\/\/www.pranaair.com\/us\/blog\/air-pollution-affects-your-sleep\/\" target=\"_blank\" rel=\"noreferrer noopener\">air pollution<\/a> (think car exhaust fumes) could team up with genetic risks to make Parkinson\u2019s more likely. They looked at two groups of people\u2014one from central California (the PEG study) and one from Denmark (the PASIDA study). Together, they studied 1,600 people with Parkinson\u2019s and 1,778 healthy folks to compare their experiences.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.aqi.in\/blog\/wp-content\/uploads\/2025\/05\/Shaky-hands-of-an-elderly-person-holding-a-mug-1024x1024.webp\" alt=\"Shaky hands of an elderly person holding a mug\u2014early symptom of Parkinson\u2019s.\" class=\"wp-image-18224\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Who Was Involved?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>California (PEG)<\/strong>: This group had 634 people with Parkinson\u2019s and 733 without, with an average age of about 67. They were a diverse bunch\u201471% White, 19% Latino, 5% American Indian or Alaska Native, 3% Asian, and 2% African American. Think of a mix like your local community, with farmers, teachers, and retirees.<\/li>\n\n\n\n<li><strong>Denmark (PASIDA)<\/strong>: This group included 966 Parkinson\u2019s patients and 1,045 healthy people, averaging 63 years old. Most were of European background, like many families in small Danish towns.<\/li>\n\n\n\n<li><strong>The Big Picture<\/strong>: About 62% of the Parkinson\u2019s patients were men, and 56% of the healthy group were men, which fits since Parkinson\u2019s tends to affect men a bit more.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">How Did They Measure Air Pollution to Understand Parkinson\u2019s Disease?<\/h3>\n\n\n\n<p>The researchers focused on<a href=\"https:\/\/www.aqi.in\/blog\/health-effects-of-traffic-related-air-pollution\/\" target=\"_blank\" rel=\"noreferrer noopener\"> traffic-related air pollution, or TRAP<\/a>, which comes from car and truck exhaust. They used carbon monoxide (CO) levels to represent this pollution, as it\u2019s a key marker of vehicle fumes. They figured out how many people were exposed at their homes over many years:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In California, they used a model to estimate pollution over 10 years, looking back 15 years before someone got Parkinson\u2019s (or before the study for healthy folks). They skipped the most recent 5 years to account for Parkinson\u2019s slow buildup.<\/li>\n\n\n\n<li>In Denmark, they used a different model to track 15 years of pollution, going back 20 years with the same 5-year gap.<\/li>\n\n\n\n<li>Both models were super accurate, matching real-world measurements about 90% of the time. It\u2019s like knowing exactly how much smog was in your neighbourhood over a decade!<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What They Found For the Link Between Air Pollution and Parkinson\u2019s Disease?<\/h2>\n\n\n\n<p>The researchers used a \u201cpolygenic risk score\u201d (PRS) to measure this. They looked at 86 genetic markers linked to Parkinson\u2019s, adding them up to give each person a score. A higher score means a higher genetic risk. Here\u2019s what they discovered, explained in a way that hits home:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1500\" height=\"1001\" src=\"https:\/\/www.aqi.in\/blog\/wp-content\/uploads\/2025\/05\/fact-of-inhaling-air-pollution-causing-parkinsons-1500x1001.webp\" alt=\"Inhaling air pollution can increase you chance of parkinson's data\" class=\"wp-image-18202\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Genes Matter<\/strong>:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>People with a higher genetic risk score were 76% more likely to have Parkinson\u2019s. In California, the risk was 69% higher; in Denmark, it was 81% higher.<\/li>\n\n\n\n<li>Think of it like this: if your family has a history of Parkinson\u2019s, your odds are already higher, like drawing a tougher card in a game.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Pollution Adds Fuel to the Fire<\/strong>:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Living in areas with more traffic pollution increased Parkinson\u2019s risk by 10%. This was true in both California and Denmark.<\/li>\n\n\n\n<li>Imagine breathing in exhaust fumes every day on your commute or while walking your dog\u2014it\u2019s not just annoying; it could be harming your brain.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>The Dangerous Duo<\/strong>:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The real shocker came when they looked at people with <em>both<\/em> high genetic risk and high pollution exposure. These people were at higher risks as <em>3 times more likely<\/em> to have Parkinson\u2019s compared to those with low genetic risk and low pollution (odds ratio = 3.05).<\/li>\n\n\n\n<li>In California, the risk was 3.41 times higher; in Denmark, it was 2.81 times higher. This combo is like mixing a spark with gasoline\u2014it creates a bigger fire than either one alone.<\/li>\n\n\n\n<li>Even people with high genetic risk but low pollution had a 2.31 times higher risk, showing genes are a big deal, but pollution makes it worse.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A Synergistic Effect<\/strong>:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The combined effect of genes and pollution was stronger than expected. In California, the risk was 28% higher than if you just added the two risks together. It\u2019s like pollution and genes gang up to make Parkinson\u2019s more likely.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Why Should You Care About Air Pollution and Parkinson&#8217;s Disease?<\/h2>\n\n\n\n<p>This study isn\u2019t just numbers\u2014it\u2019s about real people, like your parents, your neighbours, or even you. Here\u2019s why it hits close to home:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Air Pollution Is Everywhere<\/strong>: Whether you\u2019re in a bustling city or a suburb near a freeway, traffic pollution is part of life. It\u2019s the smog you see on your drive or the fumes you smell at a busy intersection.<\/li>\n\n\n\n<li><strong>It\u2019s Not Just Your Lungs<\/strong>: We know pollution can make you cough or worsen asthma, but this study shows it might also harm your brain, especially if you\u2019re genetically at risk for Parkinson\u2019s.<\/li>\n\n\n\n<li><strong>You Can Make a Difference<\/strong>: Unlike your genes, which you can\u2019t change, air pollution is something we can tackle. Cleaner air could mean fewer people facing Parkinson\u2019s in the future.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How Does Pollution Hurt the Brain?<\/h2>\n\n\n\n<p>The study suggests pollution might trigger Parkinson\u2019s by causing inflammation in the brain or damaging the cells that make dopamine. For example, diesel exhaust (a big part of TRAP) has been shown in lab studies to harm brain cells and increase a protein called alpha-synuclein, which is linked to Parkinson\u2019s. It\u2019s like pollution sneaks into your brain and starts causing trouble, especially if your genes make you more vulnerable.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.aqi.in\/blog\/wp-content\/uploads\/2025\/05\/pollution-effects-on-the-brain-as-a-human-inhaling-1024x1024.webp\" alt=\"Neurons under attack from pollution particles in a brain cross-section.\" class=\"wp-image-18213\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">What Can You Do About It?<\/h3>\n\n\n\n<p>This study is a wake-up call, but it\u2019s also a chance to act. Here are some relatable ways to make a difference:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>At Home<\/strong>: If you live near a busy road, consider an air purifier or planting trees to filter the air. Support local efforts to reduce traffic, like better public transit or bike lanes.<\/li>\n\n\n\n<li><strong>In Your Community<\/strong>: Speak up for cleaner air\u2014join campaigns for electric buses or stricter emission rules. It\u2019s like voting for your grandkids\u2019 future health.<\/li>\n\n\n\n<li><strong>Stay Informed<\/strong>: If Parkinson\u2019s runs in your family, talk to a doctor about your risk. Knowing more can help you make smart choices, like moving to a less polluted area if you can.<\/li>\n<\/ul>\n\n\n\n<p><em>Note: All the images are AI-generated.\u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>You have noticed your grandparents\u2019 hands tremble as they try to hold a coffee mug, or your neighbour, barely 60,&hellip;<\/p>\n","protected":false},"author":29,"featured_media":18239,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3441],"tags":[3530,3465,3466,3589,3542],"class_list":["post-18468","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-pollution","tag-air-pollutants-en-in","tag-air-pollution-en-in","tag-air-pollution-effects-en-in","tag-air-quality-en-in","tag-aqi-en-in"],"_links":{"self":[{"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/posts\/18468","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/comments?post=18468"}],"version-history":[{"count":0,"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/posts\/18468\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/media\/18239"}],"wp:attachment":[{"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/media?parent=18468"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/categories?post=18468"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aqi.in\/blog\/en-in\/wp-json\/wp\/v2\/tags?post=18468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}