瑞典科学家发现：空气污染增加心脏病发作的危险

瑞典Karolinska研究院发表的最新论文指出：暴露于空气污染物中会增加致命的心脏病发作的危险。

Karolinska的研究员Mats Rosenlund博士，研究了外部环境中可能会导致心脏病发作的一些因素，包括空气污染、被动吸烟、噪音污染以及饮用水中的化学物质。

Rosenlund博士关于空气污染与心血管疾病之间关系的试验研究提示：长期暴露于周围空气污染物增加了致命的心脏病发作的危险，尤其是在医院之外。这种关联在由汽车交通所导致的空气污染物的环境中尤其明显，尽管对非致命的心脏病发作危险没有影响。为了得到污染资料，每一位受试者的家庭地址被转换为地理坐标，然后与自从1950年之后的所有已知来源的污染物释放的资料进行交叉验证。

Rosenlund博士对被动吸烟的研究显示：被动吸烟并不会增加心脏病发作的危险。这些研究结果提示：暴露于家庭和工作环境污染物显著增加心脏病发作的危险。这篇论文还涵盖了先前关于高血压与飞机噪音之间存在相关性的资料，但是，该项研究对饮用水硬度的结果显示：没有证据提示饮用水硬度或者镁离子或者钙离子含量对心脏病发作有何影响。
 
Air Pollution Increases Heart Attack Risk
 
Exposure to air pollutants increases the risk of a fatal heart attack, according to a new thesis published by the Karolinska Institute (Stockholm, Sweden).

A Karolinska researcher, Mats Rosenlund, Ph.D., explored a number of factors in the external environment thought to contribute to the risk of cardiovascular disease, including air pollution, passive smoking, noise pollution, and the chemical composition of drinking water.

Dr. Rosenlund’s study of the relationship between air pollution and cardiovascular disease suggests that a prolonged exposure to ambient air pollutants increases the risk of a fatal heart attack, especially outside the hospital. This relationship was found to be particularly true for airborne pollutants caused by motor traffic, although there was no influence on the risk of suffering an incapacitating or nonfatal heart attack. To obtain the pollution data, each subject’s home address was converted to geographic coordinates, which were then cross-referenced with data on all known sources of pollutant emission since 1950.

Dr. Rosenlund’s studies on passive smoking show that passive smoking does increase the risk of a heart attack. The results suggest that the combined exposure at home and at work contributes significantly to the risk of having a heart attack. The thesis also included previous findings that a correlation exists between hypertension and aircraft noise, However, the study on the hardness of drinking water showed no evidence that the hardness or the magnesium or calcium content has any effect on the risk of a heart attack.