There are a number of reasons people look to preserve their fertility into the future.

One reason is to preserve fertility until after cancer treatment, and another is for people who think their fertility may decline before they are ready to have children.

Preserving fertility till after treatment

Sperm, eggs, embryos and testicular tissue and ovarian tissue can be frozen for people who face losing their fertility because of cancer treatment or another reason.

Preserving fertility until you are ready to have a baby with egg freezing

Eggs can also be frozen by women who have not yet found a partner and who are concerned that their fertility will soon decline because of their age. This is called social egg freezing. More 

Sperm freezing for future use

Sperm freezing can also be used as a back up for fertility treatment in the future, or before having a vasectomy. More