These techniques allow couples who cannot have children naturally to become parents, so the statement is justified.
Many couples are childless because of irregular menstrual cycles, problems in oocyte production, blocked oviducts or difficulty in implantation in women, or because of absence, slow movement or abnormality of sperms in men.
- IVF: fertilization is done in a test tube and the embryo is implanted in the uterus. It helps when there is low sperm count or blocked oviducts.
- Surrogacy: if a woman cannot carry the embryo in her uterus, her oocyte is fertilized in a test tube with her husband's sperms and the embryo is implanted in the uterus of another woman (surrogate mother) with a normal uterus.
- Sperm bank: semen from healthy, medically checked donors is stored like blood in a blood bank and used (with the donor's name kept secret) when the husband cannot produce healthy sperms.
Thus these modern techniques remove the causes of infertility and help many families.