"Statins actually act in the liver. In doing so they reduce cholesterol formation in the liver, and this transforms to lower blood levels of cholesterol but maybe also of lower levels in the gallbladder," said Dr. Michael Bodmer, University Hospital, Basel, Switzerland.
Around 20 percent of us will have gallstones sometime in our life. They form when some of the chemicals stored in the gallbladder harden into a mass. A high calorie, high fat diet can bring them on and rapid weight loss is a another factor in their formation.