A stroke occurs when a blood vessel in the brain ruptures and bleeds, or when there’s a blockage in the blood supply to the brain. The rupture or blockage prevents blood and oxygen from reaching the brain’s tissues.
According to the Centers for Disease Control and Prevention (CDC), stroke is the fifth-leading cause of death in the United States. Every year, more than 795,000 U.S. people have a stroke.
Without oxygen, brain cells and tissue become damaged and begin to die within minutes. Check out exactly how stroke effects the body.