Your gallbladder is an organ in your body that helps you digest fat. The gallbladder is situated just underneath the liver, on the right side of the body.
Your gallbladder aids in digestion by storing the bile your liver produces and releasing it into your small intestine every time you eat food. Bile is a liquid that helps break down the fat you eat. When someone has a problem with their gallbladder (like a tendency to get painful, hardened masses called gallstones), they sometimes have surgery to remove the organ. You can live without a gallbladder, although it's harder to digest fatty food without one.