As I recall,at one time the only approved use for Soy was as a glue for cardboard boxes. The industry got hold of it and started making claims. I think that it is an extremely hard to digest protein and avoid it (goes for chick peas too!). Has hormone like substances that turns men into steers.
If someone wants to lower cholesterol eat avocados. Raises the good fats, lowers the bad. I had something like a 20% reduction in the bad after 1 month of an avocado a day. (I don't grow them, sell them, or trade them!) They also make a great baby food.
Box glue huh? That doesn't surprise me. Many of the seed oils that are touted as healthy were used in paint, before a chemist discovered a petroleum derivative that was better and cheaper.