Hypertension, also known as high blood pressure, is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. High blood pressure usually does not cause symptoms. High Blood pressure is classified as being either primary hypertension or secondary hypertension. 90-95% of cases are primary hypertension, which means high blood pressure, usually defined as a repeatedly elevated blood pressure exceeding 140 over 90 mmHg (a systolic pressure above 140 with a diastolic pressure above 90). Secondary hypertension is caused by other conditions that affect the kidneys, arteries, heart or endocrine system. Regular blood pressure checks help with diagnosis. In most cases, no specific cause is found. Long-term high blood pressure, however, is a major risk factor for coronary artery disease, stroke, heart failure, peripheral vascular disease, vision loss, and chronic kidney disease. Hypertension is treated with regular aerobic exercise, weight reduction for those overweight, salt restriction, and medications to control blood pressure.
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