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Menopause Health Center

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Soy May Help Women Before Menopause

Premenopausal Heart, Bones May Benefit From Soy, Studies Show
WebMD Health News

Oct. 8, 2004 -- Premenopausal women may want to start eating more soy to protect their heart and bones for years to come, according to new research.

Jay Kaplan, PhD, and Cynthia Lees, DVM, PhD, at Wake Forest University Baptist Medical Center, worked with colleagues on two new soy studies. They presented their findings at the 15th annual meeting of the North American Menopause Society, held this week in Washington.

Soy has attracted a lot of research attention in recent years, and the jury is still out on its effects. Earlier this week, a report indicated that soy-based foods and extracts might not help women avoid hot flashes and other menopausal symptoms. However, soy may help the hearts and bones of premenopausal women, say Kaplan and Lees.

The researchers each studied soy's effects on 100 fully developed, premenopausal monkeys. Some monkeys were at higher risk for heart disease due to the stress of their low social rank in their community's pecking order.

Lees and Kaplan each gave half of their monkeys a soy-rich diet containing the human equivalent of 129 milligrams per day of isoflavones, soy's key ingredient. That's much more soy than most Americans eat. In fact, it's about twice as much as typical levels in soy-rich Asian diets, according to a news release.

In both tests, the soy-eating monkeys got all of their protein from soy for one year. A second group of monkeys didn't eat any soy, consuming all their dietary protein from animal sources including milk.

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