Kidneys cleanse our blood by removing waste and excess fluid. Many people have chronic kidney disease and they don’t know it. It may take many years to reach kidney failure and in some cases patient lives through his life without any severe problem.Damaged kidney may result in swelling of ankle, vomiting, weakness, poor sleep and shortness of breath. If left untreated, it may lead to cease of kidney function. A person affected by this, must see a pathologist for blood and urine tests. Main reasons are diabetes and high blood pressure, where there is extra pressure in the kidney to filter the blood.