CAD is the most common cardiovascular disease and a top cause of death. The arteries become narrow as the artery-wall thickens, causing a limitation of blood flow to the heart. Up to 90% of cases may be prevented if the risk factors are avoided.
A stroke is a "brain attack". It happens when there is a disruption in the blood flow to the brain and results in cell death. Stroke often leads to permanent disability and is a top cause of death.
Hypertension, or high blood pressure, is a condition in which the blood pressure in the arteries is persistently elevated. It can have no symptoms, but it's a major risk factor for dangerous diseases. Hypertension affects 25% of the population and is believed to be a factor in 18% of deaths.