Gallstones

Picture of gallbladder and gallstones

Gallstones develop when cholesterol and other substances in the bile form crystals that become hard stones in the gallbladder. The gallbladder is a small sac located just under the liver. Gallstones can form when too much cholesterol is in the bile or when the gallbladder does not empty properly.

Last Updated: July 22, 2009

Author: Monica Rhodes

Medical Review: Kathleen Romito, MD - Family Medicine & Peter J. Kahrilas, MD - Gastroenterology

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