Frozen embryos more likely to be girls, fertility doctor states

A Prague-based fertility doctor has claimed children born from frozen embryos are more likely to be girls

Dr Renata Huttelova, from the IVF Cube in Prague, has said that for reasons currently unclear, female eggs are better at surviving the thawing process.

Dr Huttelova told MailOnline: “If we are talking about general population statistics, 51 per cent of births are male and 49 per cent are female.

“But with births following frozen embryos we have found the statistics swap over. This is just a slightly changed ratio, but there’s certainly a slight difference weighted more towards girls.”

She explained that male embryos appear to be more sensitive during the thawing process and girl embryos seem to be stronger.

Dr Huttelova said: “I would think that other embryologists would agree with the statistical differences, but the real question is why this happens.

“For me this is a small but noteworthy difference between the ratio of male to female after the thawing procedure. We need multiple fertility centre statistics to confirm this pattern.”