Beware! Air pollution can raise your blood pressure exposure to air pollutants

Sep 18, 2016 | | Say something

associated with burning coal, dust, vehicle exhaust and can significantly increase the risk of developing high blood pressure, says a new study published in the journal Hypertension .


Beware! Air Pollution May Raise Your Blood Pressure Beware! Air pollution can raise your blood pressure

“In our analysis of 17 previously published studies we found a significant risk of developing high blood pressure due to exposure to air pollution,” said Tao Liu, lead author of the study and associate director and epidemiologist in the division of health environmental in the Guangdong provincial Institute of Public Health of china.

“Air pollution can lead to the development of hypertension through inflammation and oxidative stress, which can cause more changes in the arteries. “

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“People should limit their exposure on days with higher pollution levels, especially for people with high blood pressure, even very short-term exposure can aggravate their condition.”

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The researchers conducted a meta-analysis of published studies available worldwide assessment of the health effects of all air pollution in the risk of hypertension. Meta-analyzes the results of previous studies to estimate the overall effect of a given variable on an outcome are combined. In the first study to simultaneously estimate the effects of exposure to short-term and long-term atmospheric pollutants on hypertension by the meta-analysis, the researchers focused on these air pollutants:

  • sulfur dioxide (SO2), which comes mainly from burning fossil fuels;
  • nitrogen oxide (NOx), which comes from fossil fuels burned in power plants and vehicle exhaust;
  • nitrogen oxide (NOx), which comes from fossil fuels burned in power plants and vehicle exhaust;
  • particulate matter (PM) are particles found in the air, including dust, dirt, smoke and liquid droplets. (PM 2.5 is smaller than a grain of dust, and the most common and dangerous type of air pollution. PM10 and PM2.5 includes PM2.5-10).
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The meta-analysis found that high blood pressure was significantly associated with:

  • short-term exposure to SO2, PM2.5 and PM10; and
  • long term exposure to nitrogen (NO2), which is produced from combustion dioxide and PM10.

For part of the study assessed the short-term effects of ozone and carbon monoxide exposure, no significant associations were found. The researchers said that ozone and linkages carbon monoxide to high blood pressure requires further study

Of the 5,687 studies on pollution initially identified air, 17 were the focus of this -., Which involves more than 108,000 patients with hypertension and 220,000 non-hypertensive controls. High blood pressure is defined as greater than 140 mmHg systolic and / or diastolic blood pressure above 90 mm Hg or use of antihypertensive drugs. exposure to air pollution was assessed by averaging the data from monitoring stations nearest pollution air, or using complex dispersion models or models of land use regression.

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Hypertension is a major risk factor for cardiovascular disease and stroke.

Previous studies have indicated that air pollution could be a risk factor for hypertension, but the results are controversial, Liu said. The mechanism by which air pollution may contribute to the development of hypertension involving inflammation and oxidative stress, which can lead to changes in the arteries.

“Then planned to deepen the effects of particles and their sources in the risk of hypertension, which we hope will inform control air pollution policy makers,” Liu said.

Source: Eurekalert

This article was originally published on medindia.net

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