According to the National Stroke Association, nearly 800,000 people in the U.S. experience a new or recurrent stroke each year. A stroke, also known as a cerebrovascular accident (CVA), occurs when the brain is deprived of blood and oxygen for several seconds, which kills essential brain cells. Hemorrhaging or an aneurysm in the brain may also lead to stroke.
Damage caused by stroke depends on the severity of the stroke itself. Minor cases of stroke may cause temporary weakness or numbness in an arm or leg, whereas severe cases of stroke could lead to paralysis of one side of the body and difficulty speaking. Although it is possible to recover from stroke, more than 60% of survivors live with some form of disability.