Gallstones are formed when the bile produced by the liver contains excess cholesterol more than that the bile can dissolve. This excess cholesterol along with other salts and the discarded red blood cells (bilirubin) crystallizes into gallstones.
In most cases gallstones remain silent in the bladder and you may not feel pain or other symptoms. However once they block the flow of bile into the bile duct, it may lead to a condition known as gallbladder attack. This can result in a medical emergency with severe upper abdominal pain, vomiting, gas blocking, obstructive jaundice and pancrealitis due to its complications.
Cholecystectomy, a surgery to remove the gall bladder is normally performed to overcome this condition. The removal of the gall bladder does not affect the normal life of a person though some dietary changes can be helpful.
Though the occurrence of gallstones cannot be prevented, a lifestyle with a balanced diet usually helps to reduce the risk.