In November 2006, Mertesacker created the "Per Mertesacker Foundation", initially to support the family of his former Hannover and Germany late teammate Robert Enke, and is targeted at those suffering from depression.
November 2006, huet de Mertesacker de "Per Mertesacker Foundation", zuerst fir d'Famill vu sengem fréiere Hannover an Däitschland matenee verstoppt Teammate Robert Enke, deen op de Leit aus Depressioun gezielt gëtt.