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​Kidneys are the two bean-shaped organs in the middle of your back. Normal kidneys are purple-brown and weigh about 4-6 oz. each and 4.5 inches long. That's about the size of a fist. They are located on the left and right sides of the spine. Everyone needs at least one working kidney. Here are some tips for keeping your kidneys healthy:

1. Keep your blood pressure at the target set by your health care provider. For most people, the blood pressure target is less than 140/90 mm Hg. This can delay or prevent kidney failure.
2. If you have diabetes, control your blood glucose level.
3. Keep your cholesterol levels in the target range.
4. Take medicines the way your provider tells you to. (Important! Certain blood pressure medicines called ACE inhibitors and ARBs may protect your kidneys. Ask your health care provider for more information.)
5. Cut back on salt. Aim for less than 2,300 milligrams of sodium each day.
6. Choose foods that are healthy for your heart: fresh fruits, fresh or frozen vegetables, whole grains, and low-fat dairy foods.
7. Limit your alcohol intake.
8. Be more physically active.
9. Lose weight if you are overweight.
10. If you smoke, take steps to quit. Cigarette smoking can make kidney damage worse.