Now that a national organization on reproductive medicine has formally allowed unmarried women to do so, women are increasingly becoming interested in freezing and preserving their eggs for future pregnancies.

Since November last year, women have been allowed to freeze their eggs without any medical reasons attached.

The Japan Society for Reproductive Medicine adopted guidelines allowing women to preserve their eggs cryogenically if they are concerned about a decline in reproductive function due to age or other reasons, while discouraging those aged 40 or older from preserving eggs and the use of frozen eggs in women aged 45 or older.