Age and Fertility, The Affect of Age on Female Infertility

For a woman over 40, your doctor should perform the basic evaluation over a period of one to two months. You and your health care provider together should make every attempt to correct any problem that is uncovered in the basic evaluation. Aggressive therapy may be indicated, because time is the biggest factor.

The pituitary gland produces Follicle Stimulating Hormone (FSH), which is responsible for the cyclic development of eggs every month. As a woman's eggs become less capable of producing a pregnancy, the levels of FSH begin to rise. Women who have gone through menopause have very high levels of FSH (and are incapable of becoming pregnant with their own eggs). Young women who have had an accelerated decline in the quality of their eggs can also have high FSH levels.

Findings associated with age-related decline in fertility may include changes in FSH levels, recent cycle shortening or irregularity, climacteric symptoms, and low numbers of follicles in response to stimulation. Previous ovarian surgery with removal of an ovarian cyst or partial removal of ovarian tissue might lead to earlier loss of ovarian function. Your doctor will estimate your "ovarian reserve" by testing your cycle day 3 Follicle Stimulating Hormone (FSH). Normal levels for FSH on day 3 are different for different laboratories. In many laboratories, the normal level is less than 10 IU. Women with FSH levels slightly above normal are considered borderline, and women with FSH levels that are consistently elevated have an extremely low chance of conceiving and carrying to term. To be valid, the FSH must be drawn in conjunction with an estradiol, and the estradiol should be less than 50 pg/ml.

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