Your chances of forming
gallstones that can cause symptoms may be higher if
Are female. Females are twice as likely as
males to have gallstones.
Are older than 55.
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,
Have a family history of
Are taking estrogen (after
menopause) or high-dose birth control pills.
Are Native American or
sickle cell disease.
Are taking certain medicines. Ask your doctor if your medicine may be causing your gallstones.