Gallstones are hard lumps that get stuck in your gallbladder. They can be painful and you may need to surgery to remove them.¹

People who are obese are two to three times more likely to get gallstones compared to people who are a healthy weight.² Doctors aren't really sure why people who are overweight get gallstones.

This information is for educational use only, and is not a substitute for prompt professional medical advice. Readers should always consult a physician or other professional for advice and treatment. ©BMJ Publishing Group Limited 2008. All rights reserved.