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Harvard Heart Letter

When the blood supply to the kidneys suffers

The renal arteries, which supply blood to the kidneys, can become narrowed or blocked—a condition known as renal artery stenosis.

Image: Thinkstock

Published: July, 2015

Fatty plaque in the arteries that feed the kidneys poses a danger to the heart and brain.

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Daily Health Tip

Memorize the warning signs of a stroke

The acronym FAST can help. F: Face drooping. Can the person smile? Is the smile uneven? A: Arm weakness. Is one arm weak or numb? If the person raises both arms, does one drift down? S: Speech difficulty. Is the person's speech slurred? Can they repeat simple sentences you give them? T: Time to call 911. If the person shows any of these symptoms, even if the symptoms go away, call 911. Check the time so you know when the symptoms began.