ping
There is definite data that hormone therapy increases your risk of cancer (like the kind that killed my mother), heart attack, stroke, etc.. there is no definite data that soy will hurt you.. especially in moderate amounts.. in fact just the reverse is true.. soy is good for you.. .. I have personal experience with this.. I had some nasty airborne allergies that kept me up nites congested and coughing.. I introduced soy into my diet in moderate amounts and it has reduced my allergy attacks by at least 75 percent... I have a feeling the drug companies are the ones pushing the notion that soy might hurt you because they aren't getting a piece of the pie.
ping
others say that for postmenopausal women, consuming soy in large doses, especially in isoflavone supplements, may elevate the risk of getting breast cancer or pose other health risks.
I am almost positive that when the government says "in large doses" it is referring to studies it makes by subjecting rats to something like 1000 times the amount that normal person would ingest. That way, it will cause cancer in rats just like any product subjected to such government testing. If somebody wants something off the market just ask the government to do a "rat" test and the results will get the item off the shelf.
If you are worried about rogue estrogen check out vrp.com They have two products, I3C (indole-3-carbinol) and BioDim that I take to counteract estrogen. In men estrogen can cause a number of bad effects especially if they are taking a testerone precursor such as androstenadione.