Egg freezing is a growing practice, but why? In the United States, the average age of the first birth it’s passed from 19 years of 1984 to 30 years of 2021an even higher value in many metropolitan areas, with many people delaying parenting for many reasons, including financial, professional, educational and personal.
Unfortunately, it likely is the quality and quantity of eggs decrease with agewhich can lead to infertility, adverse pregnancy outcomes and the inability to achieve the desired family size.
A study Published on Fertility and Sterility examined the “real life” results of egg freezing to delay pregnancy, with this study having 543 patients. The mean age of the first egg freeze was 38 (older than the optimal age, which is 35 or less), with the median time between freezing and thawing 4.2 years.
Overall, between 2005 and 2020, there were 800 egg freezing cycles, 605 egg thawing and 436 embryo transfers.
This study found that the 70% of patients who have frozen eggs aged 38 years or younger and who thawed at least 20 years later, had a baby. This percentage was much higher than those using fresh eggs or embryos for in vitro fertilization (IVF) at age 40, where 30% became pregnant and only 20% gave birth.
“Our findings shed light on the factors that track successful egg freezing births, which include careful screening of embryos to thaw and implant.”
stated in a declaration there head of the study Sarah Druckenmiller Cascantewho later added:
“A better understanding of the birth rate from egg freezing to age-related decline in fertility is needed to inform patient decision making.
It is important to point out that our study is based on real clinical experience rather than on mathematical models with limited data, which is most of what has been published so far on the possibility of egg freezing births ”.
The importance of egg freezing
An advantage of this method is that frozen and thawed embryos often undergo preimplantation genetic screening, resulting in reduction in miscarriage rates and higher live births per transferFurthermore, this type of screening also allows single embryo transfers, which are safer for parents and children.
“Our results provide realistic expectations for those considering egg storage and show that egg freezing technology gives women better reproductive autonomy”
he claims study author James A. Grifowho adds:
“Egg freezing at a young age becomes an option to be your own egg donor at an older age. Since younger patients freeze their eggs and go through more than one cycle, success rates will be even higher than those reported in this study. “
NYU Langone Fertility Center is a pioneer in developing egg freezing technology and saw the first baby born through egg freezing in 2005, and since they’ve seen nearly triple the number of people who started egg freezing cycles in 2022 compared to 2019.
This increase highlights the importance of this type of study so that patients can be better informed when trying to secure their reproductive future. Further larger studies are now underway and further studies need to be conducted on different geographic and center types.
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