A third of Americans have high blood pressure, according to the Centers for Disease Control. Half of them don't have it under control. iStockphoto.com hide caption

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Reducing dietary salt and alcohol, exercising, not smoking and maintaining a healthy weight are other lifestyle tweaks known to help prevent or reduce high blood pressure, doctors say. David McNew/Getty Images hide caption

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The use of multiple blood pressure medications may be helping some Americans bring their hypertension under control. iStockphoto.com hide caption

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