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Doctors have always believed that women ovulate once a month. But a startling new study published in the medical journal Fertility and Sterility shows that women's bodies are actually able to release an egg multiple times during a cycle. "We found that about 68 percent of study subjects had two waves of follicle development and 32 percent had three waves, meaning all the women were capable of ovulating more than once a month," explains Roger Pierson, Ph.D., senior author of OB-GYN at the University of Saskatchewan in Canada. "You can no longer assume it's possible to track what the ovaries are doing by looking at your menstrual cycle." These findings seem to provide yet another reason why the rhythm method (a form of birth control in which you abstain from s_x during ovulation) is unreliable.
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