http://www.mothering.com/articles/gr...soy_story.html
Full footnotes for sources are at the bottom of the page.
I did feed my son soy formula when he was an infant, after he was weaned, with no issues, but in light of the data above, do not believe it is something that any of us need to be eating in very large quantities. As something to help out in clearing arteries, my point is, it could be promising.