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Fertility for those born biologically male

  • The Reproductive System in Biological Males

    At birth the testis of a biological male does not contain sperm, but contains immature stem cells which can produce sperm after puberty. Once puberty starts, signals from the pituitary gland tell the testes to start producing the hormone testosterone and the testes start to increase in size. From about mid-puberty onwards, the germ cells in the testes become mature enough to start producing sperm. In the mature testes, the Sertoli cells are responsible for making sperm and the Leydig cells are responsible for producing testosterone.

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    Fertility Preservation Information for Biological Males

    Testicular Tissue Cryopreservation (TTCP) V7.2

    Sperm Banking V2

    Adolescent and Young Men Undergoing Cancer Treatment

    Maybe Later Baby? A Guide to Fertility For Young People With Cancer


    Patient videos


    Onco-fertility in brief

    What is Onco-fertility?

    Onco-fertility in children

    Sperm freezing

    Testicular tissue freezing