Chronic kidney disease mineral and bone disorders (CKD-MBD) is a slowly progressive complication of CKD occurring over many years. The kidneys are unable to maintain normal levels of calcium and phosphate and respond to the hormones needed to maintain healthy bones. CKD–MBD is a common problem in people with stage 3 CKD onwards and affects almost all patients receiving dialysis. This article explains why renal bone disease occurs, the problems it can cause for patients affected and provides practical tips on how to identify people at risk and management options.