Infertility is usually defined as the inability to conceive after one or more years of regular sex during the ovulation period and may also indicate inability to hold the pregnancy until completion. It is estimated that a couple of every five couples in the United States suffer from infertility and it can be difficult to determine the exact cause. The process of ovulation and vaccination and the transfer of fertilized egg through the fallopian tube and finally reaching the uterus is a very complex process, many of the events should be in harmony until pregnancy occurs
For men, infertility is usually the result of a small number of sperm or anatomical anomalies. Various factors can lead to a small number of sperm such as exposure to toxins, radiation, severe heat, testicular injuries, hormonal disorders, alcohol intake, acute illness, long-term fever, and testicular infection. Most anatomical abnormalities lead to infertility Men are varicose veins
As for women, the most common cause of infertility is spread ovarian failure or defects, obstruction of the fallopian tube and hyperstimulation of endometrial uterus and fibroids. Some women have anti-sperm antibodies for their husbands, making them allergic to them. Chlamydia is a reproductive disease that affects 4 million Americans a year and causes many infertility. Psychological factors such as stress or fear of parenthood may contribute to infertility