Koch's achievements, along with the performances of many other East German female athletes, have long been under suspicion that they were achieved with the aid of performance-enhancing drugs.  These drugs were and remain illegal, but were not detectable at the time. In 1991, German anti-drug activists Brigitte Berendonk and Werner Franke , were able to save several doctoral theses and other documents written by scientists working for the East German drug research programme. The documents list the dosage and timetables for the administration of anabolic steroids to many athletes of the former GDR, with one of them being Marita Koch. According to the sources, Koch did use the anabolic steroid Oral-Turinabol (4-Chlorodehydromethyltestosterone) from 1981 to 1984 with dosages ranging from 530 to 1460 mg/year. 
Art of the Olympians continued to grow 10 years after their first exhibition. The organization now has 50 Olympian and Paralympian artists on its roster including two posthumous members: Al Oerter and Florence Griffith-Joyner. Over the past decade Art of the Olympians artists and their artwork have been seen on numerous TV networks including CBS , NBC , BBC , CNN , PBS , the USA Network and UK’s Channel Four and had Exhibitions at three Olympic and Paralympic Games: Beijing 2008 , Vancouver 2010 and London 2012 . And for three and half years, between 2010 and 2013, AOTO had dozens of group and solo exhibitions at their museum and gallery in Fort Myers, Florida.