Gallstones are hard stones that form in the gallbladder. In most cases the formation of these stones will cause no symptoms (or problems) and go undetected. However, in a small number of people, particularly middle-aged women, the stones can be a cause of gall bladder disease and may require treatment (see gallbladder removal).
Typical symptoms include upper right abdominal pain, fever, nausea, vomiting and increased flatulence. There are three types of gallstone formation; mixed (the most common type containing calcium deposits), cholesterol (large stones comprised mainly of cholesterol) and pigment (formed from the bile pigment and tend to form as a result of illness). The reason for the formation of the stones is still unclear. However, the symptoms usually subside with a reduction of eggs, spicy and fatty foods from the diet.
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