The freezing of eggs increases a woman's chances of having children later in life and in cases where she suffers cancer.
The cryopreservation of sperm has already been practised successfully for over 50 years. The fragile egg, however, has delicate inner structures and a cytoskeleton that is very vulnerable to the formation of ice crystals. Research has now managed to open another door in reproductive medicine by successfully freezing and thawing eggs.
It is usually difficult for women aged 40 and over to become pregnant the natural way. Furthermore, late pregnancies bear an increased risk of miscarriage and genetic abnormalities. The timely freezing of eggs is also a practical remedy for many problems. Young single women about to receive chemotherapy choose cryopreservation to retain their chances of having a biological child.