But freezing your eggs can be an expensive story.

A treatment costs tens of thousands of kroner, and according to Thomas Brodin, several treatments are often needed to have a good chance of a future pregnancy.

In addition, the patient pays an annual fee for the freezing.

- There is an uncertainty in what it leads to. You can't freeze eggs and think you've saved everything for the future, says Thomas Brodin.

For example, the Uppsala researcher Emma Frans has previously voiced criticism that egg freezing risks being a waste of money for women.