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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.

Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Specialist Medical Reviewer Jerome B. Simon, MD, FRCPC, FACP
- Gastroenterology
Last Updated August 2, 2007

WebMD Medical Reference from Healthwise

Last Updated: August 02, 2007
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