A member asked:

Please explain the process of forming viable sperm--how important is testosterone in the process? lh? fsh? how long does whole process take in all

A doctor has provided 1 answer

3 months: It takes 3 months for your testes to make sperm. Lh stimulates production of testosterone in the testes, fsh stimulates the tubules to make sperm. Both are needed. Testosterone needs to be made by the testes, taking it by gel or injection will not work, and may be detrimental.

Answered 9/18/2013

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Thank

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