Lose weight rapidly. Gallstones develop in about
one-fourth of very overweight men and women who are on strict diets and in
about half of people who have gastric bypass surgery for obesity. Gastric
bypass surgery reduces the size of the stomach and connects the smaller stomach
to the middle section of the small intestine.
Have low levels of
"good" cholesterol (HDL or high-density lipoprotein) and elevated
triglycerides, which are a type of fat found in the
blood and in foods.
Have a disease of the small or large intestine,