How does spironolactone treat high blood pressure?

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As a diuretic, spironolactone helps the kidneys better process liquid waste, which then reduces the amount of water your body retains. High blood pressure (hypertension) is a condition that often produces no symptoms, although it can have serious affects on your health. High blood pressure can be caused by kidney or hormonal disorders, and can be encouraged by factors such as obesity, smoking, and a sedentary lifestyle. Because diet, exercise, and general health have a major impact on blood pressure, people with hypertension need to change their lifestyle habits in addition to taking corrective medicine. Taken alone or in addition to other medications, spironolactone can treat high blood pressure by flushing out excess fluid from the body and dilating the blood vessels. This reduces pressure by decreasing the overall volume of the blood and providing more room for it to flow through the vascular system.