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High blood pressure dangers: Hypertension's effects on your body

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By Mayo Clinic Staff

High blood pressure, also called hypertension, can quietly damage the body for years before symptoms appear. Without treatment, high blood pressure can lead to disability, a poor quality of life, or even a deadly heart attack or stroke.

Blood pressure is measured in millimeters of mercury (mm Hg). In general, hypertension is a blood pressure reading of 130/80 mm Hg or higher.

Treatment and lifestyle changes can help manage high blood pressure to lower the risk of life-threatening health conditions.