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Epilepsy May Be Linked to Infertility Risk

Study Shows Women Taking Multiple Epilepsy Drugs Are at Greatest Risk for Fertility Problems
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WebMD Health News
Reviewed by Laura J. Martin, MD

Oct. 11, 2010 -- More than one-third of women with epilepsy may experience problems becoming pregnant, according to a new study of women from India. This rate is more twice as high as the infertility rate seen among Indian women in the general population.

The study is published in the Oct. 12 issue of Neurology.

There are many reasons that women with epilepsy may have difficulty conceiving, including the effects of certain drugs on hormones involved in pregnancy and facets of the disease itself or its severity.

The new study included 375 women with an average age of 26 who had epilepsy and were planning to start a family. They were followed for up to 10 years. During this time, 231 women became pregnant, and 144 women did not. Most pregnancies occurred within the first two years of attempting to conceive, the study researchers report.

More Epilepsy Drugs, Greater Infertility Risk

The more drugs the women were taking to control their epilepsy, the greater their risk for fertility problems. Women taking three or more drugs to treat their epilepsy were about 18 times more likely to experience fertility problems, compared with women who were not taking any epilepsy drugs.

Seven percent of women taking no drugs to control their seizures experienced fertility problems, compared with 32% of those taking one drug, 41% of those taking two drugs, and 60% of those taking three or more epilepsy medications, the study shows.

“This may be due to the adverse effects of taking multiple drugs or it could be a more indirect effect because people who are taking multiple drugs are more likely to have severe epilepsy that is difficult to treat,” the researchers conclude.

Older women and women with less than 10 years of education were also more likely to experience difficulty conceiving. Fertility risk was not tied to the type of epilepsy in the new study, the researchers report.

The study did have some limitations. For example, women with epilepsy who were trying to conceive were not compared to a group of women without epilepsy also trying to become pregnant.

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