Pills are seen in an undated file photo illustration. A German scientist has been testing an 'anti-stupidity' pill with encouraging results on mice and fruit flies, Bild newspaper reported Saturday. [Reuters]

It said Hans-Hilger Ropers, director at Max-Planck-Institute for Molecular Genetics in Berlin, has tested a pill thwarting hyperactivity in certain brain nerve cells, helping stabilize short-term memory and improve attentiveness.

"With mice and fruit flies we were able to eliminate the loss of short-term memory," Ropers, 62, is quoted saying in the German newspaper, which has dubbed it the "world's first anti-stupidity pill."