Hypertension, also known as high blood pressure, is a condition where the pressure in your blood vessels is too high. Blood pressure is measured in millimeters of mercury (mmHg) and is typically considered high if it is consistently at or above 130/80 mmHg. Hypertension can be serious if left untreated and can increase the risk of other health problems such as heart disease, heart attack, and stroke. Many people with hypertension may not realize they have it, so regular checkups are important. Treatment options for hypertension include dietary changes, exercise, and medication.