Sympathetic brain to blame for high blood pressure

High blood pressure can be attributed to a disruption of blood flow to the kidneys, known as renovascular hypertension, which is caused by a narrowing or obstruction of the blood vessels that supply the kidneys. To date, renovascular hypertension had been understood as the kidney`s reaction to this disrupted blood flow, which triggers hormone release from the kidneys, causing retention of body fluids, thereby elevating blood pressure. 

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