Today, more and more Americans are protecting their most important asset-their health. Stroke ranks as the third leading killer in the United States. A stroke can be devastating to individuals and their families, robbing them of their independence. It is the most common cause of adult disability. Each year more than 500,000 Americans have a stroke, with about 145,000 dying from stroke- related causes.
Brain cells can die from decreased blood flow and the resulting lack of oxygen.
While not usually fatal, a blockage of a blood vessel in the brain or neck, called an ischemic stroke, is the most frequent cause of stroke and is responsible for about 80 percent of strokes. Bleeding into the brain or the spaces surrounding the brain causes the second type of stroke, called hemorrhagic stroke. Many communities encourage those with stroke's warning signs to dial 911 for emergency medical assistance. Common heart disorders such as coronary artery disease, valve defects, irregular heart beat, and enlargement of one of the heart's chambers can result in blood clots that may break loose and block vessels in or leading to the brain. The most common blood vessel disease, caused by the buildup of fatty deposits in the arteries, is called atherosclerosis.