I did Clark's programs for almost 2 years before I attempted a Liver-Flush and although I felt very ill it was great the way my health improved as I did more flushes and got out thousands of stones and sludge. It is important to do the preparations - kill off parasites, soften hard calcium stones. People who's bodies are too acid rather than slightly alkaline tend to make more stones and gravel. There are both diets and supplements to correct this condition. Many people have underlying intestinal problems which favor gallstone formation. My problem is a gluten sensitivity, autoimmune Celiac Disease. This is inherited and needs to be ruled out because there is no cure except to strictly avoid gluten in wheat, barley, rye.