This study Dr Scally posted is a reminder of why I am taking Tamoxifen right now, and why I am trying to transition off TRT. After a certain amount of time on and also my age (mid-30's) it may be more difficult to regain my fertility and sperm count and mobility.
I never thought fertility would be important to me or I would care but these days I am thinking more about it and I think at some point I would like to father children. Or at least one kid lol
Kohn TP, Louis MR, Pickett SM, et al. Age and duration of testosterone therapy predict time to return of sperm count after human chorionic gonadotropin therapy. Fertility and Sterility. http://www.fertstert.org/article/S0015-0282(16)62919-9/abstract
Objective - To determine factors that influence sperm recovery after T-associated infertility.
Design - Clinical retrospective study.
Setting - Academic male-infertility urology clinic.
Patient(s) - Sixty-six men who presented with infertility after T use.
Intervention(s) - T cessation and combination high-dose
hcg and selective estrogen modulator (SERM) therapy.
Main Outcome Measure(s) - Whether patients successfully achieved or failed to achieve a total motile count (TMC) of greater than 5 million sperm within 12 months of T cessation and initiation of therapy.
Result(s) - A TMC of greater than 5 million sperm was achieved by 46 men (70%). Both increased age and duration of T use directly correlated with time to sperm recovery at both 6 and 12 months of hCG/SERM therapy. Age more consistently limited sperm recovery, while duration of T use had less influence at 12 months than at 6 months. Only 64.8% of azoospermic men achieved a TMC greater than 5 million sperm at 12 months, compared with 91.7% of cryptozoospermic men, yet this did not predict a failure of sperm recovery.
Conclusion(s) - Increasing age and duration of T use significantly reduce the likelihood of recovery of sperm in the ejaculate, based on a criterion of a TMC of 5 million sperm, at 6 and 12 months. Physicians should be cautious in pursuing long-term T therapy, particularly in men who still desire fertility.
Using these findings, physicians can counsel men regarding the likelihood of recovery of sperm at 6 and 12 months.