Infertility is the inability to naturally conceive, carry or deliver a healthy child. The International Council on Infertility Information Dissemination (INCIID) considers a couple to be infertile if they have not conceived "after a year of unprotected intercourse in women under 35, or after six months in women over 35", or if they are incapable of carrying a pregnancy to term.

Infertility is the inability to naturally conceive, carry or deliver a healthy child. There are many reasons why a couple may not be able to conceive, or may not be able to conceive without medical assistance.