Ever wondered why heart and kidney diseases often go together? When there's an accident on a highway linking major cities, it's rare that just one road would be affected – a traffic jam on one major route often leads to congestion on others. Similarly, the vital organs are like cities connected by a network of highways and main roads (arteries and veins). When there's a problem in one, things often go wrong elsewhere, too. This is especially true of the heart and kidneys, which work very closely together. A heart disease can often cause chronic kidney disease, and CKD can