New research shows that the plant estrogens in soy dont impair fertility in monkeys. The study was designed to test a theory that high-soy diets can compromise fertility in women.
The results, from Wake Forest University Baptist Medical Center and Emory University School of Medicine, were reported today at the annual meeting of the American Society for Reproductive Medicine in Philadelphia, Pa. "Our results suggest that a high-soy diet probably wont compromise fertility in women," said Jay Kaplan, Ph.D., lead researcher, from Wake Forest Baptist. "But our results confirmed earlier findings that fertility may be affected by stress levels."
Women in Asian countries where a lot of soy is consumed have dramatically lower rates of breast cancer than women in the United States. One explanation is that plant estrogens, called isoflavones, increase menstrual cycle length or reduce ovarian hormones – both which would reduce lifetime exposure to estrogen. However, these changes in the menstrual cycle could also impair fertility.
Karen Richardson | EurekAlert!
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