Could increasing testosterone prevent diabetes?
Up to 1500 men across four Australian states are being sought to enrol in a Weight Watchers program and be given regular injections of either testosterone or a placebo.
The lead investigator, Professor Gary Wittert from the University of Adelaide, said men aged 50–74 at risk of developing diabetes were currently being sought for the two-year study.
It was the first time such a study had been conducted anywhere in the world, he said.
"Nobody has ever done a proper two-year trial to answer the question of whether giving testosterone prevents the onset of diabetes," Professor Wittert said.