A stroke, or "brain attack," occurs when blood circulation to the brain fails. Brain cells can die from decreased blood flow and the resulting lack of oxygen. There are two broad categories of stroke: those caused by a blockage of blood flow and those caused by bleeding.
Stroke: Defined, Warning Signs
Hypertension or high blood pressure is when the pressure in your arteries is consistently above the normal range of pressure. Blood pressure is when the force of blood is pushing against the blood vessel walls.
Risk factors, Prevention, Treatment
