Causes of female infertility Causes of female infertility may include: Ovulation disorders, which affect the release of eggs from the ovaries. These include hormonal disorders such as polycystic ovary syndrome. Hyperprolactinemia, a condition in which you have too much prolactin — the hormone that stimulates breast milk production — also may interfere with ovulation. Either too much thyroid hormo ...

Uterine or cervical causes Several uterine or cervical causes can impact fertility by interfering with implantation or increasing the likelihood of a miscarriage: Benign polyps or tumors (fibroids or myomas) are common in the uterus. Some can block fallopian tubes or interfere with implantation, affecting fertility. However, many women who have fibroids or polyps do become pregnant. Endometriosis ...

Tests for men: Male fertility requires that the testicles produce enough healthy sperm, and that the sperm is ejaculated effectively into the vagina and travels to the egg. Tests for male infertility attempt to determine whether any of these processes are impaired. You may have a general physical exam, including examination of your genitals. Specific fertility tests may include: Semen analysis. ...

Causes of male infertility These may include: Abnormal sperm production or function due to undescended testicles, genetic defects, health problems such as diabetes, or infections such as chlamydia, gonorrhea, mumps or HIV. Enlarged veins in the testes (varicocele) also can affect the quality of sperm. Problems with the delivery of sperm due to sexual problems, such as premature ejaculation; certa ...

Risk factors Certain factors may put you at higher risk of infertility, including: Age. The quality and quantity of a woman's eggs begin to decline with age. In the mid-30s, the rate of follicle loss speeds, resulting in fewer and poorer quality eggs. This makes conception more difficult, and increases the risk of miscarriage. Smoking. Besides damaging your cervix and fallopian tubes, smoking inc ...

Infertility can be caused by many different things. For 1 in 4 couples, a cause cannot be identified. Infertility in women Infertility is commonly caused by problems with ovulation (the monthly release of an egg from the ovaries). Some problems stop an egg being released at all, while others prevent an egg being released during some cycles but not others. Ovulation problems can be a result of: ...

Problems in the uterus or fallopian tubes can prevent the egg from traveling from the ovary to the uterus, or womb. If the egg does not travel, it can be harder to conceive naturally. Causes include: Surgery: Pelvic surgery can sometimes cause scarring or damage to the fallopian tubes. Cervical surgery can sometimes cause scarring or shortening of the cervix. The cervix is the neck of the uteru ...

Unexplained fertility problems: Your doctor may diagnose an unexplained fertility problem if there's no obvious reason for your infertility (meaning all test results are normal). Some experts believe subtle differences in the way the reproductive system works may cause this type of infertility. This can include differences in follicle development, sperm function, or the fertilization process. Ex ...