Your kidneys are one of the most important organs in your body. They’re responsible for filtering your blood, removing waste from your body, and balancing your fluids. When your kidneys aren’t functioning properly, it can lead to serious health problems like renal failure. Renal failure is when the kidneys can no longer filter toxins from the blood and they begin to shut down. This can often lead to a build-up of toxins in the body, which can be fatal. Treatment for kidneys often include dialysis or a kidney transplant. Some pharma companies also advertise various supplements for treating kidney problems.