Hypertension,abnormally high arterial blood pressure that is usually indicated by an adult systolic blood pressure of 140 mm Hg or greater or a diastolic blood pressure of 90 mm Hg or greater, is high pressure against the walls of your veins and arteries caused by blood flow—often occurs when the arteries or veins become blocked or narrowed, making the heart work harder to pump blood. But many cases seem to be the result of smoking or taking in too much salt, and many are genetically caused. Hypertension is serious, since it can lead to heart attacks and strokes. Though it often produces no warning symptoms, your blood pressure can be checked quickly and easily by a nurse. If it's high, it can usually be controlled by stopping smoking, losing weight, lowering your salt intake, and exercising—and if all else fails, by medication.
Hypertension is an important risk factor for chronic kidney disease and cardiovascular disease. The global prevalence of hypertension is increasing owing to factors including population ageing and obesity.
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