Diet Plan for Patients of Kidney Disease Kidney disorders areusually inflammatory in origin, or degenerative in nature. With an increasing severity, these may result in renal failure. Kidney diseases may be acute or chronic and have several underlying causes. The main function of kidney is to eliminate waste products and extra fluid from blood. A well planned diet is one of the ways to control levels of protein, potassium, sodium, fluid and phosphorus in body. Renal diet is low in