1. Gallstones : Causes, incidence, and risk factors  (Trust Mark: Doctor-Reviewed)
The cause of gallstones varies. Some stones form when there is too much cholesterol or bilirubin in the bile. (Bile is a liquid that helps the body digest fats) Other stones form if there are not enough bile salts or if the gallbladder fails to em...• Reviewer: Linda Vorvick, MD, Seattle Site Coordinator, Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Gallstones  (Trust Mark: Doctor-Reviewed)
A gallstone is a solid crystal deposit that forms in the gallbladder, which is a pear-shaped organ that stores bile salts until they are needed to help digest fatty foods. Gallstones can migrate to other parts of the digestive tract and cause seve...• Author: Maureen Haggerty