A swedish retired medicine doctor Karl Otto Aly at "Hälsans hus" in Stockholm is familiar with the Liver Flush (oljekur). He know about the benefits of the flush, but he is sceptical to the idea that it is stones formed in the liver, though he admits that it is possible to get out very small "real" gallstones. He told me that the flush is a good way to get rid of bacteria and toxic waste in the liver, but emphasized not to do it to often.