Intake of Dietary Phytoestrogens Is Low in Postmenopausal Women in the United States: The Framingham Study
作者： Miriam J. J. de Kleijn , Yvonne T. van der Schouw , Peter W. F. Wilson , Herman Adlercreutz , Witold Mazur
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摘要: Many plants that are consumed contain phytoestrogens. Only a few published studies have examined the dietary intake of phytoestrogens in general Western population. The potentially positive health effects might be relevance to postmenopausal women. aim present study was estimate isoflavones, coumestans and lignans by healthy For this purpose, we studied 964 postmenopausal, Caucasian women who participated Framingham Offspring Study completed Willett food-frequency questionnaire (FFQ). By searching medical agricultural literature contacting experts, identified food sources concentrations different coumestrol each FFQ were scored seven categories multiplied serving size frequency its consumption. estimated daily median isoflavone daidzein 39 microg (24-57 microg); genistein, 70 (28-120 formononetin, 31 (13-44 biochanin A, 6 (2-11 microg). Median total isoflavones 154 (99-235 main beans peas. 0.6 (0.2-1.7 microg), with broccoli as source. matairesinol 19 (12-28 microg) secoisolariciresinol 560 (399-778 578 (416-796 source fruits. United States is <1 mg.
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