The kidney-heart connection
The heart pumps blood filled with oxygen through all parts of your body, including the kidneys. The kidneys clean the blood, removing waste products and extra water. Without the kidneys, your blood would have too much waste and water. Without the heart, your kidneys would not have the oxygen filled blood needed to do its many important jobs. Without the help of your kidneys, the heart would be working too hard or would not function at all. A healthy functioning cardiovascular system is important for your kidneys to their job. When your heart or kidneys cannot function normally, it can lead to cardiovascular disease (heart disease) or kidney disease.