Freeze eggs before 35 for a better chance of IVF success, says report

Age at time of freezing is key to whether fertility treatment will succeed, says UK regulator

For women intending to undergo IVF treatment using frozen eggs, the younger they are when they are frozen the greater the chance of a successful pregnancy, according to a report by the UK's independent fertility regulator.

Most IVF treatment cycles use fresh eggs, but a very small number use eggs that have been frozen and thawed. It can, for example, be especially beneficial for cancer patients who decide to freeze their eggs before undergoing chemotherapy.