...BUT FROZEN EMBRYOS HAVE BEST CHANCE OF PREGNANCY

Women who have IVF with frozen embryos have a better chance of becoming pregnant, the study also found.

Scientists say the removal of eggs during fertility treatment could damage the womb’s lining.

But if implantation could be delayed after egg collection – as enabled by freezing embryos – then the womb could be given time to heal, leading to a better chance of pregnancy.

However, scientists warn that the potential benefits of freezing embryos are highly dependent on the skills of different IVF clinics.

Dr Gedis Grudzinskas, a Harley Street fertility expert, said: ‘If implantation could be delayed by a month or two after egg collection, then problems could be overcome.

‘But should we recommend routinely freezing embryos? only if the IVF clinic has excellent freezing facilities.

‘The critical part of IVF is the quality of its cryobiology.’