Jethro Kloss from Back to Eden fame cured alot of cancer as well through the implementation of diet and behavior protocols. He was a bit too interested in soy products for me, and information available now may refute some of his claims with respect to problems it may create in excess:
PS The other problem: how does one make a distinction about what one is flushing out of their colon?
PS#2 Its also interesting about soy that Linda MacCartney died of Breast Cancer and was a wild advocate of soy products for which she even started a company. Its unlikely that in her zest for these beans she would have even considered the possibility that they may have had some influence on the course of her health and subsequent demise. In general soy can produce too much "phlegm"