Well you don't need any lancet studies or any other study to know that these green stones are just congealed bile formed in the intestines. Plain old common sense will tell you that. All you have to do is look at the size of the liver and think about the amount of stones that have purportedly been released by different people over the years and it really is a no-brainer.
The interesting part is the inconsistency of "stone" release. It appears it is possible to have several flushes in a row without this bile release and this is when many people proclaim themselves stone free. However this is not the case, continued flushing will see the re-appearance of this bile and the cycle will start again. I myself have experienced this.
The Liver Flush definately shakes things up in the liver area but I don't think it reaches beyond the superficial in terms of healing abilities. Pollen allergies and cold feet do not exactly qualify as serious ailments in my book. People report pain relief but this could just be the Liver Flush removing an obstruction somewhere in the liver vicinity and not necessarily a bile stone. The pain oftens keeps returning as well.