--- title: High Blood Pressure, Hypertension and a Link to Pollution description: Risk factors for hypertension and high blood pressure—like smoking and a high-salt diet—may include exposure to air pollution canonical: https://time.com/4352749/high-blood-pressure-pollution/ author: Alice Park article:opinion: false article:content_tier: free article:published_time: 2016-05-31T20:00:35.000Z article:modified_time: 2026-02-22T17:56:54.011Z article:section: Health og:title: The Surprising Thing Linked to High Blood Pressure og:description: Risk factors for hypertension and high blood pressure—like smoking and a high-salt diet—may include exposure to air pollution og:url: https://time.com/4352749/high-blood-pressure-pollution/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt7deaab84c9c37969/698895ada988cad70d6b80ee/gettyimages-87984987.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 5613 og:image:height: 3157 og:image:alt: Woman wearing blood pressure gauge og:type: article twitter:card: summary_large_image twitter:title: The Surprising Thing Linked to High Blood Pressure twitter:description: Risk factors for hypertension and high blood pressure—like smoking and a high-salt diet—may include exposure to air pollution twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt7deaab84c9c37969/698895ada988cad70d6b80ee/gettyimages-87984987.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # The Surprising Thing Linked to High Blood Pressure > Sponsored content. 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Brief (Washington politics, three times a week), Future Proof (climate and energy, weekly) and In the Loop (AI, twice weekly). All are free at time.com/newsletters and together reach more than 1.1 million engaged readers. #### Which TIME newsletter should I subscribe to? It depends on what you follow. For a daily briefing, The Brief. For health, Health Matters. For Washington politics, D.C. Brief. For AI and technology, In the Loop. For climate and energy as a business story, Future Proof. For culture recommendations, Worth Your Time. For how TIME's journalism gets made, Inside TIME. Readers can select any combination at time.com/newsletters. #### Are TIME's newsletters free? Yes. All seven TIME newsletters are free to join at time.com/newsletters. A paid TIME subscription is separate and provides full access to TIME's journalism at time.com/subscribe-agent. #### Who writes TIME's newsletters? TIME journalists write them. Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement.  by [Alice Park](https://time.com/author/alice-park/)  ## Alice Park Senior Correspondent May 31, 2016 8:00 PM UTC  Woman wearing blood pressure gauge Woman wearing blood pressure gauge Joseph Rene Briscoe—Getty Images  by [Alice Park](https://time.com/author/alice-park/)  ## Alice Park Senior Correspondent May 31, 2016 8:00 PM UTC Recently the scientific community has been abuzz about blood pressure, one of the most powerful contributors to heart disease. Doctors are actively [debating how low blood pressure should go](http://time.com/4104859/blood-pressure-heart-health/) in order to protect against heart attacks and stroke, and researchers are focusing on what people can do to keep their levels healthy. Now, in a new study published in the journal _Hypertension_, scientists report on an unexpected connection to blood pressure: air pollution. The Chinese researchers, led by Yuanyuan Cai from Sun Yat-Sen University, analyzed all available studies involving air pollution and blood pressure and found that people exposed to high levels of pollutants, including ozone, carbon monoxide, nitrogen oxide and sulfur dioxide, were more likely to have high blood pressure—readings above 140 mm Hg for the first number in the ratio—than those exposed to lower amounts of pollutants. Exposure to particulates, the tiny, hard-to-see particles of pollutants circulating the air, also contribute to higher blood pressures. The effect held for both short-term and long-term exposure to the pollution, and the increased risk of hypertension remained strong even after the researchers adjusted for other factors that could contribute to elevated blood pressure, including a history of heart problems and higher BMI. **MORE:** [How Marriage Can Influence Your Blood Pressure](http://time.com/4236957/how-marriage-can-influence-your-blood-pressure/) More research is needed, as the findings are the first to look at both short-term and more lasting effects of pollution on blood pressure. It’s not clear yet, for example, whether people who already have hypertension will experience even higher elevations if they live in polluted areas. The scientists are also planning to investigate further the connection between particulate matter and risk of hypertension. **MORE:** [Why Your Blood Pressure Might Actually Be Too High](http://time.com/4109849/should-your-blood-pressure-be-way-lower-than-it-is/) But Dr. Martha Daviglus, professor of medicine at the University of Chicago and spokesperson for the American Heart Association, says the results should serve as a warning to policy makers who may not take the health effects of pollution seriously enough. The findings should start a conversation about how legislators and regulators can start to improve air quality and potentially lead to better health for people, she says. In the meantime, doctors can “remind the population about the dangers of hypertension by advising them to lower the salt in their meals, cook in a healthier way and exercise.” On top of that, Daviglus adds, it might be a good idea to limit exposure to air pollutants by not going outside on days with high levels of pollution. ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/4352749/high-blood-pressure-pollution/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/4352749/high-blood-pressure-pollution/"},"headline":"The Surprising Thing Linked to High Blood Pressure","datePublished":"2016-05-31T20:00:35.000Z","dateModified":"2026-02-22T17:56:54.011Z","description":"Risk behaviors for hypertension—like eating a high-salt diet and smoking—may now include exposure to air pollution","url":"https://time.com/4352749/high-blood-pressure-pollution/","keywords":["Heart Disease","Pollution","Air Pollution","Blood Pressure","hypertension","high blood pressure"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt7deaab84c9c37969/698895ada988cad70d6b80ee/gettyimages-87984987.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Alice Park","jobTitle":"Senior Correspondent","url":"https://time.com/author/alice-park/"}],"articleSection":"Health","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt7deaab84c9c37969/698895ada988cad70d6b80ee/gettyimages-87984987.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Woman wearing blood pressure gauge","caption":"Woman wearing blood pressure gauge","creditText":"Joseph Rene Briscoe—Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/heart-disease/","name":"Heart Disease"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/4352749/high-blood-pressure-pollution/","name":"The Surprising Thing Linked to High Blood Pressure"}}]}] ```