Sperm freezing or cryopreservation is a procedure that preserves the sperm cells.
Firstly, the semen sample is collected, diluted with cryoprotectant media, and then aliquoted into small vials. The vials are frozen in liquid nitrogen for later use and the frozen sperm samples can then be successfully preserved for years to come.
The cryoprotectant medium is used to prevent damage to the sperm caused by the freezing and thawing processes.
Why would men need to freeze their sperm? Men may choose to preserve their fertility for various reasons. Examples include but are not limited to Low sperm count, poor motility, and undergoing health-related treatments, and/or surgical procedures.