If the comment below is correct as to the number of sources of phyto oestrogens, and phyto estrogens DO pose a problem fro ER + I dont know what you all will eat, as well as having to live in that glass bubble!
My weak attempt a humour!
I understand your concern and admire you throughness. This string has been very thought provoking.
Hopefully somebody will produce some more definative answers at some point, in the mean time it is important not to forget the flax oil is a good source of omega three, oleic acid etc and is low in omega six, which I beleive accounts for a good proportion of benifits but on the balance of proabilities not all. Contributors appear clear that the oil contains no lignans. ( I have not looked at that and so cannot comment)
http://professional.cancerconsultant....aspx?id=35579
ABSTRACT
"The effect of soy products is thought to be due to phytoestrogens. Phytoestrogens are plant-derived non-steroidal compounds found in soy products, unrefined grain products, carrots, spinach, broccoli and other fruits and vegetables. Phytoestrogens have a weak estrogen-like effect and are protective against various cancers. The best documentation appears to be for the prevention of breast and prostate cancer, which are hormone-dependent cancers."
Re the above question the trials quoted in this string above seem to suggest that whatever the phyto estrogens are up to it works in the same direction as tamoxifen, or alters other paramaters in a benificial direction, but I appreciate are not definative which is a concern were so many questions are raised.
RB