237SJ...sorry I have only just seen your thread.
I have read all the posts which are impressive and I feel that I cannot anything further.
I can so no properly conducted therapeutic trials which would suggest that oestrogens in Soy,would "invigorate" an oestrogen sensitive breast cancer, quite the opposite in that certain trials show that Soy inhibits oestrogen sensitive breast tumours.
Whenever there is a conflict like this in the medical field, then the upshot that there is no definitive answer.
I am a clinician rather than a scientist, but there are to scientists on AB,,,Lazygun and the prof and I will send a fao for them.