Sperm preservation is often performed in situations of impending vasectomy, low sperm count, poor sperm quality, illnesses such as prostate cancer, testicular cancer, or Non-disease, Hodgkin's and subsequent medical treatments that may affect future sperm production. According to research, men who want to have children beyond the age of 50 are more likely to have children with autism or mental retardation, and they may consider sperm banking during their earlier years. In the instance of embryo preservation, the embryos are preserved so that they may be utilized in future pregnancies rather than being destroyed. In the event that a current IVF or other reproductive therapy fails, it is more cost effective to utilize the stored embryos rather than restart the procedures. Another reason individuals choose embryo preservation is medical procedures that may diminish their chances of pregnancy. Donor programmes form a small percentage of causes of preservation.