"Exogenous testosterone supplementation decreases sperm production. Studies of hormonal contraception indicate that most men have a return of normal sperm production within 1 year after discontinuation. Clomiphene citrate is a safe and effective therapy for men who desire to maintain future potential fertility. Although less frequently used in the general population, hCG therapy with or without testosterone supplementation represents an alternative treatment."
http://tau.amegroups.com/article/view/2249/3145%29
http://tau.amegroups.com/article/view/2249/3145%29