Photography http://xnxx.in.net/xnxxjapan/ Xnxx Japan The study didn't test hormones as therapy, but explored which ones had which effects. It involved 400 healthy male volunteers, ages 20 to 50, who were given monthly shots of a drug to temporarily reduce their testosterone production to pre-puberty levels. They were then given various doses of testosterone gel or a dummy gel to use. Half also were given another drug to prevent testosterone's conversion into estrogen.