Chronic kidney disease (CKD) and its complications can kill at any age warns a new study from Johns Hopkins Bloomberg School of Public Health. The study shows that the prevalence of CKD shoots up with age from four percent between 20 and 39 years to 54 percent among adults who have crossed 75 years. Bloomberg researchers analysed data involving more than two million participants across Asia Australia Europe North and South America from 46 studies conducted from 1972 to 2011 the journal JAMA reported. Some of the CKD symptoms are anaemia or shortage of red blood cells (RBCs). Healthy kidneys