It is highly recommended for patients with oncology who need to undergo the treatment due to the side effects of chemotherapy and radiotherapy that may influence on the sperm, we advise to freeze sperm before the treatment in order to preserve reproductive capacity.
Moreover, it is also advised for men with low sperm quality who want to preserve reproductive capacity. As a rule, these patients require a cycle of assisted reproductive treatment and have semenograms with low amount of sperm and/or reduced diastalsis of sperm (oligozoospermia and severe stage of asthenozoospermia). It is possible that with the help of in vitro fertilization (IVF) or ICSI (the transfer of a sperm into the oocyte cytoplasm) pregnancy can be achieved at this stage, but it would be appropriate to freeze a sample of sperm for future use in the case of decreasing the quality of sperm with age. There are men who do not undergo a reproductive treatment, but understand that their sperm have a poor quality (for example, the donors of sperm or men who make spermograma for themselves); in this case, it is recommended to freeze the sperm at this stage in order to have the opportunity to become a father in future because with age sperm quality has the ability to deteriorate.