BACKGROUNDGallstone disease and associated cholecystectomy has taken enormous portion of all surgical procedures in the world, as it is the most frequent surgical procedure practiced in any part of the world. The myth of fat, fertile, female of forty has long been busted as also the story of "Typhoid Mary." As gallstones are now seen in all age groups, in both sexes and in all corners of the globe, most frequently asked question confronted by the surgeons in the clinic from the patients is how these stones occur? Various theories of stone formation have been postulated, but the role of bacteria in gallstone formation is still mysterious.In this study, we are trying to find out the incidence of live bacteria in bile, gallbladder inner wall and gallstones in gallstone disease.