Shrinking testes: Can occur after testicular torsion which if untreated can lead to complete atrophy (death) of affected testis. Testes can shrink/atrophy after mumps, anabolic steroid use, radiation or chemotherapy for cancer. Testicular atrophy leads to reduced testosterone and sperm production leading to sterility, loss of libido ; overall reduced strength, energy ; drive, .
Answered 1/13/2014
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