Are soy products good or bad?

Hi,
when reading the arguements about garlic, i thought of an article i read about soy products. It seems as somebody said that you could do this about any food, that some people are allergic or their system is congested by toxins and have trouble naturally breaking down alot of things normally ok. The article is quite frightening, but then i read how great soy is according to nutritional expert Dr. Earl Mindell(www.freelife.com). If anyones interested the article is at http://www.brain.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=W&Product_C... I would be interested to know the truth about soy, i really don't know. However i would say what i said above is probably true. I would welcome any comments. Does anybody know for sure?
Regards
Brian