A stroke happens when blood cannot flow to a part of the brain. When the brain does not get the oxygen and nutrients it needs from the blood, its cells are damaged or begin to die. If brain cells are only damaged, they sometimes can be repaired. But brain cells that have died cannot be brought back to life.
"Preventing Strokes" is an interactive learning lesson from the National Library of Medicine, MedlinePlus, that may help you better understand common causes, symptoms and ways to help prevent strokes.
To begin the interactive learning lesson, visit www.nlm.nih.gov/medlineplus/tutorials/preventingstrokes/htm/lesson.htm.
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