||04-12-2013 03:56 PM
Even if it's non GMO...soy itself is what's known as a 'goitrogen'. In other words, it inhibits thyroid hormone making properties.
So..um...nope...any soy (except fermented sources, like soy sauce) with it being 'estrogenic' binds thyroid hormones in the bloodstream. And if you are replaced already by thyroid hormones, incoming phytoestrogens (like birth control) will bind it in the bloodstream and make a portion (or most of it in some individuals) unusable to the bodies' cells.
There are many choices of great protein shakes that use whey protein in them, not soy.