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Thursday, June 4, 2020  Spokane, Washington  Est. May 19, 1883
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Study Ties Cancer Risk To Ovulation

By Associated Press

The risk of ovarian cancer is directly related to a woman’s lifetime number of ovulations, or menstrual cycles, according to researchers who found that birth control pills and bearing children provide protection from the disease.

A high number of ovulations can increase by nine times the chances of producing the cells with a genetic flaw that often leads to ovarian cancer, said Dr. Andrew Berchuck, professor of gynecologic oncology at Duke University Medical Center.

A statistical link between the number of ovulations and ovarian cancer has been known for some time, but the new study suggests the reason: A high number of ovulations increases the chances a tumor suppressor gene called p53 can be mutated, Berchuck said.

Anything that lowers the number of ovulation cycles thus reduces the risk of ovarian cancer, he said.

“If you have one baby, it decreases your risk by about 13 percent,” he said. “If you have three babies, your risk is about half that of women who had no babies.”

The study also shows birth control pills, which control ovulation, protect against ovarian cancer, he said. Its use for five to 10 years cuts the risk in half, he said.

The study will be published today in the Journal of the National Cancer Institute.

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