Soy protein enriched with isoflavones appears to have no effect on bone mineral content and bone mineral density in young women, according to a new study. Researchers say the finding will disappoint nutritionists hoping to document benefits from diets containing the nutrients, not to mention the soy industry.
A report on the study, conducted at the University of North Carolina at Chapel Hill, appears in the current (October) issue of the Journal of the American College of Nutrition. Isoflavones are chemicals made by plants, possibly to protect them against oxidation and organisms that might attack them, and soy beans are an especially good source.
"We had seen earlier reports that isoflavones had beneficial effects on the bones of women undergoing menopause or who already were postmenopausal," said Dr. John J.B. Anderson, professor of nutrition at the UNC schools of public health and medicine. "We felt that if this were true for older women, it might also be true for healthy young women and could help protect their bones over their lifetimes."
David Williamson | EurekAlert!
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