According to the National Stroke Association, stroke is the third leading cause of death in the United States, and is a rapidly growing health threat for middle-aged women in particular. The most common type of stroke is called "ischemic stroke," which results from an obstruction in a blood vessel supplying blood to your brain.
I like to refer to most strokes as a brain attack, which is similar to a heart attack; the only difference is that the blood clot blocks blood flow to your brain instead of your heart. As a result, brain cells begin to die. Naturally, the longer your brain goes without oxygen, the greater your risk of lasting brain damage. This is one area where conventional emergency medicine excels, as there are emergency medications that can actually dissolve a blood clot that is blocking blood flow to your brain, and if done quickly enough can virtually reverse any permanent neurological damage.