My mother-in-law recently underwent surgery for an agressive brain tumor, of the glioblastom type. It was removed and she has since done radio- and chemotherapy. For years she has had a very large gallstone which doctors said was too large to move out on its own, so it was left in. Since February she has been in very good health and is very interested in doing the liver cleanse of Andreas Moritz . Is there any risk involved in doing this in relation to the cancer or the gallstone? Thanks for your input.