The gallbladder is a small storage organ that holds and concentrates bile, a digestive fluid that helps your body break down and absorb fats.

Quick Scoop: What the Gallbladder Does

  • The gallbladder sits under your liver on the right side of your upper abdomen and is about the size and shape of a small pear.
  • Its main job is to store bile made by the liver instead of letting it drip constantly into your gut.
  • While it’s stored, the gallbladder removes water and some salts from bile, making it much more concentrated and powerful for digesting fat.
  • When you eat, especially a meal rich in fat (like fried foods or creamy dishes), your small intestine releases a hormone called cholecystokinin (CCK) that signals the gallbladder to squeeze.
  • The gallbladder then contracts and sends bile through the bile ducts into the first part of the small intestine (the duodenum).
  • In the intestine, bile acts like a “dish soap” for fat: it breaks big fat blobs into tiny droplets (emulsifies them), which makes it easier for enzymes to digest them and for your gut to absorb fats and fat‑soluble vitamins (A, D, E, K).
  • Bile is also a route for your body to get rid of waste products like bilirubin (from old red blood cells) and excess cholesterol.

Do You Really Need a Gallbladder?

  • You can live without a gallbladder because the liver still makes bile; it just drips more continuously into the intestine instead of being stored and released in bursts.
  • Some people notice looser stools or mild trouble with very fatty meals after gallbladder removal, but many adjust over time with diet tweaks.

Common Issues People Talk About

  • Gallstones: Hardened deposits that can block the gallbladder or bile ducts and cause intense upper‑right abdominal pain, nausea, or vomiting.
  • Inflammation (cholecystitis): Swelling and irritation of the gallbladder, often due to stones blocking the duct, which can become a medical emergency if untreated.

If you’re having repeated upper‑right abdominal pain after meals, especially fatty ones, or pain that spreads to your back or right shoulder with nausea or fever, it’s important to get checked by a healthcare professional.

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The gallbladder stores and concentrates bile to help digest fats, releasing it into the small intestine after meals. Learn what the gallbladder does, why it matters, and what happens when it causes problems.