2 doctors weighed in:

How soon will testosterone shots affect sperm count?

2 doctors weighed in
Dr. Scott Roseff
Fertility Medicine
1 doctor agrees

In brief: By feedback loop

Testosterone supplementation can feed back to the brain and tell the hormones that control sperm production that there's plenty of stuff going on at the level of the testes.
The brain, in turn, can then shut down hormone production needed to produce sperm, since it's faked out into thinking the hormones to stimulate the testes are no longer needed. Sperm production can then suffer.

In brief: By feedback loop

Testosterone supplementation can feed back to the brain and tell the hormones that control sperm production that there's plenty of stuff going on at the level of the testes.
The brain, in turn, can then shut down hormone production needed to produce sperm, since it's faked out into thinking the hormones to stimulate the testes are no longer needed. Sperm production can then suffer.
Dr. Scott Roseff
Dr. Scott Roseff
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