综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

USEUROPEAFRICAASIA 中文雙語(yǔ)Fran?ais
China
Home / China / Top Stories

Cooking, pollution linked to high blood pressure

By Agence France-Presse in Washington | China Daily | Updated: 2014-08-27 06:57

Women in China who are exposed to pollution from cooking stoves and highways face a greater risk of high blood pressure, according to researchers.

A study published on Monday in the Proceedings of the National Academy of Sciences focused on the role of black carbon, which after carbon dioxide is the second leading human-caused emission driving climate change.

Black carbon comes from burning wood, coal and fossil fuels. About half of Chinese households cook with coal and wood, the researchers said.

The study involved 280 women living in a rural area of Yunnan province, with an average age of 52. Eighteen percent were overweight and 4 percent were obese at the start of the survey.

The women wore portable air samplers that collected particulate matter smaller than 2.5 micrometers, a size commonly associated with adverse health effects.

Black carbon exposure was linked to higher blood pressure, a leading risk factor for heart disease.

"We found that exposure to black carbon pollutants had the largest impact on women's blood pressure, which directly impacts cardiovascular risk," said lead author Jill Baumgartner, an assistant professor at McGill University.

"Black carbon's effect was twice that of particulate matter, the pollutant measured most often in health studies or evaluating cleaner cookstoves."

Living within about 200 meters of a highway was associated with a threefold higher systolic blood pressure - the greater of the two numbers that measure blood pressure - when compared with women who lived farther from a highway.

The study authors said, "We found an indication that the cardiovascular effect of black carbon from biomass smoke may be stronger if there is co-exposure to motor vehicle emissions."

Reducing such exposure "should lead to a reduction in the adverse health and climate impacts of air pollution".

Previous studies in Latin America have shown that when older women switched from traditional open-fire stoves to less-polluting chimney stoves, their blood pressure dropped.

Baumgartner said, "We found that black carbon from wood smoke negatively affects cardiovascular health, and that the health effects of wood smoke are exacerbated by co-exposure to motor vehicle emissions."

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
景宁| 福贡县| 兰溪市| 惠州市| 江门市| 攀枝花市| 眉山市| 山阴县| 新津县| 交城县| 罗山县| 正安县| 江油市| 东兴市| 渝中区| 松溪县| 托克逊县| 无锡市| 天台县| 牡丹江市| 西城区| 易门县| 诸城市| 友谊县| 寿光市| 河源市| 汉沽区| 伊春市| 安泽县| 闵行区| 桂平市| 佳木斯市| 枣阳市| 分宜县| 清新县| 峨山| 库伦旗| 河北省| 时尚| 洪雅县| 托克托县|