Hyperkalaemia is a frequent clinical complication in people with advanced chronic kidney disease and kidney failure. Dietary restrictions are frequently imposed on patients, however these are complex and overwhelming for people to follow and are not always indicated. In recent years there has been a shift in our understanding of how potassium is metabolised and factors that effect the bioavailability potassium. This has led to a new paradigm in potassium management, particularly regarding the dietary sources that are more likely to contribute to hyperkalaemia.