What do the kidneys do?

What do the kidneys do?

The kidneys are bean-shaped organs, located deep inside the body toward the back, down near the hips. Most people have two kidneys. But some people are born with only one kidney, or only one that works. Other people have a single kidney because they donated one or had one removed for another health reason. In most cases, one kidney can still do everything your body needs.

The kidneys:

• Filter blood (about a half-cup per minute) to remove waste, extra water and acid.
• Help the body maintain a healthy balance of water, salt and minerals such as potassium, calcium and magnesium.
• Make urine, or pee, so the body can remove waste.
• Make hormones to help control blood pressure, keep bones strong and create red blood cells to prevent anemia.