This document discusses infertility, including its definition, causes, examinations, and treatment methods. It notes that infertility is defined as two years of unprotected intercourse without pregnancy. The main causes of infertility are listed as female factors (40-55%), male factors (25-40%), and both male and female factors (10%). Examinations for infertility include medical history, physical exam, laboratory tests such as hormone levels and semen analysis, and imaging like ultrasounds and hysterosalpingograms. Common treatment methods for female infertility include ovulation induction, surgery to repair fallopian tubes, and assisted reproductive technologies (ART) like IUI, IVF, and GIFT.