I have seen this type of answer from Dr. Weil before about many other subjects. Dr. Weil knows alot about some things and so the public has deemed him as a guru and thinks he knows everything about everything. People write in and ask questions about things and for things he doesnt know, I think he just does a web search just like you and I do and comes up with a quick answer. He has answered wrong many times about things that I know for a fact are true. It is a shame, he is overstepping his boundry of knowledge and shouldnt be answering these things he doesnt know about. I bet he probably hasnt done a Liver Flush and analyzed these stones.
So whats the truth ?
Maybe there is a mixture of soap stones and real stones and so someone just assumed they are all soap.
But irregardless there are other benefits to a Liver Flush than just stones removal. People are receiving benefits to these and that is all that counts. I know I felt like I went through a healing crisis and some toxins were released during the flush and I felt better afterwards, that is mainly all that is important to me is results.