How to Prevent a Stroke

Information from Your Family Doctor How to Prevent a Stroke What is a stroke? A stroke happens when there is a problem with the blood supply to a part of the brain. The area of the brain that does not get enough blood becomes damaged. A stroke can happen when a blood clot blocks an artery in the brain. A stroke also can happen when the wall of an artery bursts. Depending on which part of the brain has poor blood supply, a stroke can be mild to severe. Here are some problems strokes can cause: • Problems with moving (including paralysis) • Problems with feeling • Loss of vision • Problems with thinking, understanding, or communicating (that is, problems with speaking, reading, or writing) • Changes in emotion or behavior