Biology · Ch 2 — Reproduction in Lower and Higher Animals
Infertility
2.14
Infertility
Infertility is defined as the inability to conceive naturally after (typically) one year of regular, unprotected intercourse. Its causes may be physical, congenital, disease-related, immunological, or even psychological. In females, common physical causes include polycystic ovary syndrome (PCOS), hormonal imbalance and endometriosis; in males, common c …