While freezing sperm cells and embryos has long been established as standard, it was not clear until recently whether egg freezing was as effective.
Then, in 2010, the first European working groups were able to show that certain freezing methods can achieve similar pregnancy rates to fresh egg cells.
Initially, freezing eggs (oocyte cryopreservation) was intended mainly for women dealing with the possibility of a loss of fertility as a side effect of upcoming treatment, such as chemotherapy. However, the technique is now used to offer women more flexible life planning.
It means that women who cannot or who do not want to have children at the current time for private or professional reasons can have their eggs frozen and use them at a later time to get pregnant. The term ‘social freezing’ is now commonly used to designate egg freezing for non-medical reasons.