In Germany, nearly 2 million people have non-dialysis-dependent renal insufficiency. This is the result presented by Matthias Girndt and colleagues, based on a study from the Robert Koch Institute and published in Deutsches Ärzteblatt International (Dtsch Arztebl Int 2016; 113: 85-91). In a second paper, Falk Hoffmann and colleagues conclude that one in five nursing home residents with renal insufficiency receives a contraindicated medication (Dtsch Arztebl Int 2016; 113: 92-98).