A stroke occurs when the supply of blood to the brain is either interrupted or reduced. When this happens, the brain does not get enough oxygen or nutrients, and brain cells start to die.
In the U.S., approximately 40 percent of people who die from stroke are male, with 60 percent of deaths occurring in females.
According to the American Heart Association(AHA), compared with Caucasian people, African-Americans have nearly twice the risk of a first-time stroke and a much higher risk of death from stroke.
There are three main types of stroke:
• Ischemic stroke: This is the most common type of stroke. A blood clot prevents blood and oxygen from reaching the brain.
• Hemorrhagic stroke: This occurs when a weakened blood vessel ruptures and normally occur as a result of aneurysms or arteriovenous malformations (AVMs).
• Transient ischemic attacks (TIAs): Also referred to as a mini-stroke, these occur after blood flow fails to reach part of the brain. Normal blood flow resumes after a short amount of time, and symptoms cease.