High blood pressure occurs when the pressure that is exerted on the walls of the blood vessels as the blood flows through them is too high. This condition can only be diagnosed after taking several readings to find your average blood pressure. If the average blood pressure readings are more than 140/90, you have high blood pressure. In most cases, people can lower their blood pressure through lifestyle changes (such as dietary changes and weight loss) or by taking certain medications. If high blood pressure goes untreated for a long time, it can lead to serious problems, such as kidney failure, strokes, or a heart attack.
(Click High Blood Pressure for more detailed information on possible causes of high blood pressure and potential symptoms of the condition. You can also click any of the links in the box to the right for specific information.)