High blood pressure reduces your heart’s function over time. It is the pressure in your blood vessels. It affects nearly 1 out of every 3 American adults, and another 1 out of 3 are pre-hypertensive and at risk for developing hypertension.
Hypertension is higher-than-normal pressure in your blood vessels. The pressure is measured as the force of the blood against the wall of your blood vessels, usually your arteries, which carry oxygenated blood to your body organs and tissues.