Dirty gas causes a stroke

Living in a polluted particulate atmosphere is prone to ischemic stroke. One possible cause is the change in clotting factors that form blood clots in the brain.

Scientists from Beth Israel Deaconess Medical Center (USA) investigated the relationship between air pollution and stroke in 9 US cities, based on a medical history of about 150,000 stroke-induced stroke Ischemic and 19,000 cases of hemorrhagic strokes from 1986 to 1999. The study was considered the largest scale ever, whereas before it was mainly focused on other cardiovascular diseases.

The results showed that the increase in airborne particulate matter from the lowest to the highest levels increased 1.3% of hospitalizations due to ischemic stroke on the same day. Meanwhile, there is no relation between dirty gas and hospitalizations due to hemorrhagic stroke.

According to lead researcher Gregory A Wellenius, there are three potential causes and they are alone or in combination. First, stroke is the result of a series of inflammation caused by dirty air. Second, when the substance penetrates into the lungs, the organization stimulates reactions that alter blood pressure or heart rate. Finally, the change of clotting factors stimulates blood clots, blood flow to the brain and blockage.

My Linh