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Infertility & Reproduction Health Center

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After Age 44, Fertility Successes Are Few

High-Tech Infertility Rx 'Reasonable' Until Mid-40s
WebMD Health News

Aug. 25, 2005 -- Women who seek treatment for infertility have a "reasonable" chance of having a baby with their own eggs in their early 40s, but success rates drop to close to zero once they reach age 44, a new study suggests.

Researchers reviewed birth outcomes among 1,263 women over the age of 40 treated at a large infertility clinic in Boston. After three attempted high-tech infertility treatments, birth rates for women 40 years old were 25%. By age 43 the corresponding birth rate was around 10%, and by 44 it was 1.6%.

For women who became pregnant with these high-tech procedures, the miscarriage rate per cycle was 24% for 40-year-olds, 38% for 43-year-olds, and 54% for 44-year-olds.

The findings are published in the August issue of the journal Fertility and Sterility.

"A woman in her early 40s has a reasonable chance at pregnancy with IVF, assuming that she is still having regular periods and [is still releasing eggs]," researcher Sigal Klipstein, MD, tells WebMD. "But by 44 the fertility window is definitely closing."

Successes Few After 43

Klipstein says the media focus on the seemingly endless parade of 40- and even 50-something celebrity new moms has helped to give women a distorted view of their fertility.

She adds that she routinely sees women in their mid-40s who mistakenly think that they are good candidates for IVF because they exercise, eat right, and still menstruate regularly.

A reproductive endocrinologist who now practices in Chicago, Klipstein conducted the study while completing her training at the infertility clinic Boston IVF, where the study participants were treated.

"The reality is that fertility drops dramatically after age 40," she says. "Even though we can bring that up a notch with IVF, by age 45 the chances are not very good," she says.

1 in 5 Patients Over 40 Seek Treatment

Almost one in five women who seek treatment for infertility in the United States today are over the age of 40. According to figures from the American Society for Reproductive Medicine (ASRM), one-third of those attempting pregnancy over the age of 35 will have trouble getting pregnant, and two-thirds will not be able to get pregnant on their own once they are past age 40.

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