Whether for medical reasons or to keep future options open, egg freezing is a proven way to preserve fertility. Here's what the process looks like.
Egg freezing — formally oocyte cryopreservation — lets women preserve eggs at their current biological age for use in a future pregnancy. Thanks to vitrification (ultra-fast freezing), survival rates of frozen eggs are now consistently above 90%.
Who Considers Egg Freezing
Common reasons include medical treatments that may affect fertility (chemotherapy, certain surgeries), conditions like endometriosis, family history of early menopause, or simply wanting to extend reproductive timelines for career, study or to find the right partner.
The Best Age to Freeze
Eggs frozen in your 20s and early 30s are the most likely to lead to live birth later. By the mid-30s, egg quality begins to decline more rapidly. Freezing after 38 is still possible but typically needs more cycles for the same number of usable eggs.
The Process
The cycle looks much like the first half of IVF: 10–12 days of stimulation injections, monitoring scans, then a short retrieval procedure. Mature eggs are vitrified within hours and stored in liquid nitrogen, where they remain viable for many years.
Using Frozen Eggs Later
When you're ready to conceive, eggs are thawed, fertilised with sperm (typically via ICSI), and the resulting embryo is transferred. Live-birth rates depend mainly on your age at freezing and the number of eggs stored — most clinics aim for 15–20 mature eggs for a good chance.
Egg freezing is not a guarantee of a future baby — but it is one of the most meaningful ways modern medicine has expanded reproductive choice. A consultation is the best way to understand whether and when it is right for you.
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