Many women decide to preserve their fertility by cryopreserving their eggs for various reasons, either because they do not wish to become mothers at this time or because they are going to undergo very aggressive treatments, such as chemotherapy or radiotherapy, which may end their oocyte reserve.
Vitrification is the technique used to cryopreserve oocytes, as it has proven to be much more efficient than any other. It prevents ice crystals from forming inside the cells and destroying them. Oocyte vitrification offers better results when it is done in young women, since their oocytes have a higher quality, and therefore, more capacity to fertilize and develop good embryos. The older the age of the patient, the poorer the oocyte quality and the more anomalies.