High blood pressure, known medically as hypertension, is one of the main risk factors for kidney disease and one of the top causes of end-stage kidney failure in the U.S. And in reverse, kidney disease is one of the more common causes of hypertension.
The kidneys are responsible for filtering out substances like salt. When kidneys struggle to function, these substances increase blood pressure. Alternatively, kidney damage can activate the production of certain hormones that directly increase blood pressure.

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