[taxesareforever]

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.

[babylucas]

One of the main problems with soy -- completely ignored in this article, of course -- is that the phytoestrogens also interfere with the metabolism of thyroid hormones, which regulate every single system in our bodies. There have been a number of studies linking soy baby formulas to thyroid cancers in later years.

Some people with underactive thyroids (hypothyroidism) find that consuming soy products increases the severity of their "hypo" symptoms. A large dose of soy can leave me feeling fatigued for days afterwards. In one thyroid forum, we refer to the inadvertent consumption of soy as "soybatage," because soy is in everything and it's very hard to avoid these days.

I have found this N.Z. soy info site to be persuasive: Soy Online Service.