Why is fertility preservation done before cancer treatment?

Fertility preservation is usually done before cancer treatment because the most effective options work best at that time. According to the National Cancer Institute, if you choose to preserve your fertility, your cancer team and a fertility specialist work together to build a treatment plan that includes it, and they advise on the timing.

The reason timing matters is that treatment can affect the reproductive cells and organs these methods rely on — for example, the sperm, eggs, or ovarian and testicular tissue that are collected or protected. Acting before treatment keeps the most options open.

Fertility preservation means saving or protecting eggs, sperm, embryos, or reproductive tissue so having a biological child may be possible later. Methods include sperm banking for men and freezing eggs or embryos for women, among others.

If having a biological child one day may matter to you, it helps to raise the topic as early as possible after diagnosis, even if time feels short. Ask your care team about how treatment could affect your fertility and for a referral to a fertility specialist to learn about your options.