A.K.
plant estrogens are not as easily absorbed into the body as some like to believe (all those women who swear that soy is helping their menapause are actually benefiting by and large from the placebo effect.) If you're a serious alcoholic you're more likely to be effected by plant estrogens but even then you have to drink like a fish. If this was really a concern they'd tell pregos not to eat anything in the cabbage family and to avoid flax seeds at all cost.
My advice, like everything else...all things in moderation.