Age (blood pressure can rise as people get older).A family history of high blood pressure.However, there are a number of risk factors that have been linked to high blood pressure. In most cases it is impossible to pinpoint an exact cause. The higher the blood pressure, the greater the stroke risk. It can cause blood clots or plaques to break off artery walls and block a brain artery.It can speed up common forms of heart disease.It damages blood vessel walls and makes them weaker.High blood pressure can lead to a stroke in several ways: This means the heart has to work much harder to keep the blood circulation going. High blood pressure puts a strain on blood vessels all over the body, including the arteries that lead to the brain. If your blood pressure is regularly over 140/90, you have high blood pressure. This pumping action is driven by your heart. High blood pressure, also known as hypertension, is the most important known risk factor for stroke.īlood pressure is a measure of the force with which blood presses on the walls of your arteries as it is pumped around your body.
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