Gallstones are the most common reason people have their gallbladder removed, but they’re not the only one. More than 1.2 million gallbladder removals are performed each year in the United States, making it the most common abdominal surgery in the country. The causes range from painful stone-related complications to functional problems where the gallbladder simply stops working properly.
Gallstones That Cause Symptoms
Most gallbladder removals trace back to gallstones. Many people have gallstones without ever knowing it, and those “silent” stones usually don’t require surgery. The problem starts when a stone blocks one of the ducts that carry bile out of the gallbladder. This causes intense pain in the upper right abdomen, often after eating fatty meals, and can last anywhere from 30 minutes to several hours. When these painful episodes keep recurring, removal of the gallbladder is the standard fix.
Certain people are more likely to develop gallstones. Medical students learn a classic memory device for the risk profile: female, overweight, fair-skinned, and fertile (meaning one or more pregnancies). Family history matters too. In one study, about 39% of people with gallstones had at least one first-degree relative with the same condition, compared to just 13.5% of people without stones. Age over 40 was traditionally considered a risk factor, but more recent data suggests it’s less predictive than the others, and gallstones are increasingly showing up in younger patients.
Acute Cholecystitis
When a gallstone gets stuck in the duct leading out of the gallbladder and stays there, the gallbladder becomes inflamed and swollen. This is acute cholecystitis, and it’s one of the most urgent reasons for surgery. The pain is severe, persistent, and often comes with fever and nausea. On ultrasound, the gallbladder wall appears thickened beyond 3 mm, sometimes with fluid collecting around it. Unlike a typical gallstone attack that resolves on its own, acute cholecystitis usually requires removal within a day or two of diagnosis to prevent infection or rupture.
Chronic cholecystitis is the slower-burning version. Repeated bouts of inflammation scar the gallbladder wall over time, leaving it stiff and shrunken. People with chronic cholecystitis tend to have ongoing digestive discomfort, bloating, and intolerance to fatty foods rather than a single dramatic episode. Surgery is recommended because the gallbladder has been damaged beyond the point of functioning normally.
Gallstone Pancreatitis
Sometimes a gallstone slips out of the gallbladder and lodges where the bile duct and pancreatic duct meet. This blocks the pancreas from draining properly, triggering inflammation of the pancreas (pancreatitis). Gallstone pancreatitis can be life-threatening and often requires hospitalization.
Even after the initial episode is treated, the gallbladder needs to come out. Without surgery, the risk of a second episode of pancreatitis is about 11% within the first year and climbs to nearly 23% by five years, based on a study published in JAMA Surgery. Removing the gallbladder eliminates the source of future stones and drops that recurrence risk close to zero.
Stones in the Common Bile Duct
Gallstones sometimes migrate out of the gallbladder and into the common bile duct, the main channel that delivers bile to the small intestine. A stone stuck here can cause jaundice (yellowing of the skin and eyes), dark urine, and pale stools because bile can’t reach the digestive tract. It can also trigger dangerous infections in the bile ducts.
Doctors can often fish out the stuck stone using a scope passed through the mouth and into the digestive tract. But clearing the duct doesn’t solve the underlying problem. The gallbladder that produced and released the stone is still there, so surgery to remove it is typically recommended afterward to prevent the situation from repeating.
Biliary Dyskinesia
Not all gallbladder problems involve stones. Biliary dyskinesia is a condition where the gallbladder doesn’t squeeze and empty bile the way it should. People experience the same type of pain as gallstone patients, concentrated in the upper right abdomen and often triggered by meals, but ultrasound shows no stones at all.
To diagnose it, doctors use a specialized scan that measures how well the gallbladder contracts after being stimulated with a hormone. The result is expressed as an “ejection fraction,” which is the percentage of bile the gallbladder empties. A healthy gallbladder empties at least 35% of its contents. An ejection fraction below 35% points toward dyskinesia and strongly correlates with symptom relief after the gallbladder is removed.
Gallbladder Polyps
Polyps are small growths on the inner lining of the gallbladder, usually discovered incidentally during an ultrasound done for another reason. Most are harmless, but some carry cancer risk. European guidelines recommend removal of the gallbladder when a polyp reaches 10 mm or larger. For polyps between 6 and 9 mm, surgery is recommended if additional risk factors for malignancy are present. Smaller polyps are monitored with periodic imaging, and if they grow to 10 mm over time, surgery is advised.
Porcelain Gallbladder
A porcelain gallbladder is one where calcium deposits have built up in the gallbladder wall, making it rigid and visible on imaging. This condition raised alarm for decades because early studies linked it to gallbladder cancer rates as high as 12 to 33%. More recent, better-designed research puts the cancer risk lower, around 6%, but that’s still roughly eight times the risk in a normal gallbladder. Because of this elevated cancer risk, removal is generally recommended even if the porcelain gallbladder isn’t causing symptoms.
Acalculous Cholecystitis
This is inflammation of the gallbladder without any gallstones present. It tends to occur in people who are already critically ill, such as those in intensive care, on long-term IV nutrition, or recovering from major surgery or trauma. The gallbladder becomes inflamed due to poor blood flow, prolonged fasting, or stagnant bile rather than a physical blockage. It’s less common than stone-related cholecystitis but can be more dangerous because diagnosis is often delayed. The specialized scan that measures gallbladder function is particularly useful here, as it can reveal a gallbladder that isn’t filling or emptying despite the absence of stones.
What Happens After Removal
Your body can digest food without a gallbladder. Instead of bile being stored and released in concentrated bursts, it flows continuously from the liver into the small intestine. Most people return to normal eating within a few weeks of surgery, but roughly 10 to 15% of patients develop ongoing digestive symptoms afterward, sometimes called postcholecystectomy syndrome. These can include diarrhea, bloating, and abdominal discomfort, particularly after fatty meals.
Interestingly, the likelihood of these lingering symptoms depends partly on what prompted the surgery. When gallstones were confirmed before removal, about 10 to 25% of patients develop postcholecystectomy symptoms. When no stones were found (as in dyskinesia cases), the rate rises to around 30%. Younger patients also appear more vulnerable, with one study finding a 43% incidence in people aged 20 to 29, compared to 21 to 31% in older age groups. Women are affected about 1.8 times as often as men.