The medical condition where a man’s semen contains no sperm is called azoospermia. Thanks to the advanced medical treatments avaiable, men with azoospermia do not have to give up their hopes of having children.
If the azoospermia is obstructive in nature, then an IVF treatment is recommended. We would fertilize the egg with sperm cells previously obtained with the help of a testicular puncture or a testicular biopsy (TESA or TESE).
If the azoospermia is of non-obstructive kind, further investigation to figure out the cause will be needed. In some cases, this can be hormonal and with the provision of hormones externally production of spermatozoids would be expected to resume. In many cases, however, we may have to opt for using donated sperm.