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1. Potassium treatment reduces the blood pressure substantially in hypertensive patients with salt-rich diets. 2. The difference in magnitude of blood pressure reduction between different studies is probably related to the amount of salt intake. 3. Patients with reduced salt intake benefit little from potassium treatment. 4. Major meta-analyses published to date have severely underestimated the potential benefit of potassium treatment in patients with hypertension.

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