An increase in positive drug tests for thebanned anabolic steroid nandrolone has led researchers to suggest that contamination of legitimate foodsupplements may be responsible, Reuters reports. Approximately 100 food supplements were tested at the International Olympic Committee (IOC) sanctioned laboratory in Cologne. Scientists found substances on 16 occasions that would lead to adverse nandrolone findings. "The data we have gathered over the last two years clearly indicates that nutritionalsupplements can be cross-contaminated by pro-hormones which the body metabolises tocreate nandrolone," Professor Wilhelm Schaencer, who led the research, told TheIndependent newspaper. The supplements tested in Cologne, which were bought in Europe and the US, did notinclude nandrolone or related compounds among their listed ingredients.
