# Infertility is defined as failure to conceive after 12 months of unprotected intercourse.
# It affects one in six to seven couples!!!
# In general, infertility investigations are conducted after 12 months of exposure. But for women older than 35 years, these should be started after six months of attempts.
# Infertility related to
- female factor - 33%
- male factor - 20%
- both male & female factor - 39%
- unexplained. - 8%
[ Textbook of assisted reproductive techniques, 4th edition,2012]