A massive stroke - when a blood vessel in the brain bursts - can leave someone paralyzed, mute or dead. The World Health Organization says at least six million people died from strokes in 2008 alone. But not everyone recognizes when they've had a mild stroke, which may not cause any symptoms. New research indicates these so-called 'silent' strokes affect more people than previously thought. And they can cause memory loss in one out of four older adults. VOA's Melinda Smith has details.
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