Polluted air can be very dangerous.
The effects of air pollutants (car exhaust, dirt and dust significantly increases the risk of hypertension. To such conclusion experts from China, after analyzing the data of 17 studies published previously. They were attended by a total of 108000 patients with hypertension and healthy people 220000.
The scientists focused on two compounds — sulfur dioxide into the air after burning fossil fuels, and nitrogen oxide, contained for example in exhaust gases of vehicles. The researchers also studied the solid particle. The most common and dangerous pollutants are small particles smaller than 2.5 micrometer. The amount of large solid particles less than 10 micrometers.
Experts have discovered: short-term exposure to sulfur dioxide, large and small particulates was closely related to elevated blood pressure. Also hypertension correlated long-term effects of nitrogen oxides and large particulate matter. Researchers are reminded: hypertension is a major risk factor for cardiovascular disease and stroke.
