Quote Originally Posted by rake922
Sperm (The male reproductive cells) has nothing to do with with the shrinkage of the testicles. The hypothalamus in the human brain has a detection mechanism which regulates the release of many hormones which control the production of androgens by the testes and the adrenal glands. If this detection mechanism detects an abnormally high amount of androgen / anabolic steroids, which it recognises primarily as testosterone, then the hormones responsible for testosterone release will have their production decreased, and so the testes etc. will no longer be stimulated by these hormones, and so will cease, or decrease, production of natural testosterone, and so cause testicular shrinkage.

Quote Originally Posted by stupidhippo
rake ur quote on sperm production etc was completely taken out of context.. while sperm production goes down because of the HPTA feedback system which is controlled by the amounts of sex-hormones circulating the primary function of the testes is still sperm production.

I was explaining the reason for the shrinkage of testicles... The decrease of sperm production is not what causes our balls to get smaller