[RobinP]

Interestingly, research has proven that phytoestrogens, such as those found in flaxseed, have both estrogenic and antiestrogenic activity. The predominant active components in phtoestrogens are phytochemicals, isoflavones. Isoflavones have both beneficial and adverse effects on the breast tissue in ways that are not yet completely understood. Thus, for those at risk for bc,moderation of isofavones are necessary.

the up side of flaxseed:
reduces cholestrol, shortens the menstral cycle, contains ligands which MAY reduce hormonally stimulated cancers.