If you do a search here on veggieboards, you will find lots of threads on the subject. We're a bit bored with the subject by now, so that is probably why almost no one has responded.
Anyway, soya has been safely consumed by populations in the far east for centuries. But I agree that today's consumption is probably higher than back then. Also, it's a question of processing methods. And if you don't want to eat GM soya, then buy non-GM soya. A lot of GM soya is fed to livestock.
I no longer post here after VB was sold in 2012. (See my profile page for details.)