A lot of blends that IVe taken (Probolic, EAS, etc.) have soy in them, and Ive never considered it to be anything but beneficial. Like DAmmit said, its in such small quantities that it cant hurt you, and there are certain benefits from soy protein. So Im all for blends with soy. That EAS blend from costco for $30/6lbs is a steal and I always keep a bag or two round.