High blood pressure and Kidney Disease
High blood pressure makes your heart work harder and, over time, can damage blood vessels throughout your body. If the blood vessels in your kidneys are damaged,the the nephrons (filters) gradually reduce in number and they may stop removing wastes and extra fluid from your body. The extra fluid in your blood vessels may then raise blood pressure even more. It's a dangerous cycle.
For information about Chronic Renal Failure go to http://www.infokid.org.uk/