Being aware of your blood pressure can be very valuable to your health. May is High Blood Pressure Education Month, and there is no better time to learn about the importance of monitoring your blood pressure. Half of all Americans have high blood pressure, also known as hypertension. It develops when blood flows through your arteries at higher-than-normal pressures. Let's learn more from Dr. Larry Fine, Program Officer within the Clinical Applications and Prevention Branch at the National Heart, Lung, and Blood Institute, National Institutes of Health.