Silent Gallstones: What They Are, Why 80% Cause No Symptoms, and When They Are Left Alone

Silent gallstones are gallstones that cause no symptoms at all, and they are the large majority: roughly 80% of all gallstones are silent, sitting quietly in the gallbladder and found only by chance on a scan done for something else. Because having stones is not the same as having a gallbladder problem, these silent stones are usually left exactly where they are rather than removed¹.

I carried mine silently for who knows how long before one of them finally shifted and I spent a fortnight blaming my dinner. Long before that, a scan for an unrelated ache could easily have found them, and I would have faced the same question so many people email about: a report mentioning gallstones I never knew I had, and no idea whether it meant surgery. This is the plain answer to that question. If you want the wider picture of what these stones are, start with gallstones explained.

What are silent gallstones?

Silent gallstones are stones in the gallbladder that produce no symptoms, so the person has no pain, no attacks, and no digestive upset from them, and often no idea they are there. The word “silent” describes the stones’ behaviour, not a different type of stone: a silent stone is chemically the same cholesterol or pigment stone as one that causes a violent attack, it simply has not blocked anything or inflamed the gallbladder².

The distinction that matters is between the stones and any trouble they cause. Plenty of people have gallstones; far fewer have a gallbladder problem. A stone only announces itself when it lodges in the gallbladder’s outlet or drops into a duct, and until that happens it can sit in the bile for years without ever being felt. That is why a scan report listing gallstones, on its own, is not a diagnosis of gallbladder disease.

How common are silent gallstones?

Silent stones are common because gallstones themselves are common and most of them never speak up: around 10 to 15% of adults in Western populations have gallstones, and roughly 80% of those stones are silent. So the single most likely outcome of having gallstones is that they never cause a symptom at all¹.

Gallstones are found more often in women, and the rate rises steadily with age, which means a great many people are walking around with stones they will never know about unless a scan happens to catch them². This is worth holding onto if a scan has just turned some up unexpectedly. The finding is genuinely ordinary, and it puts you in the silent majority, not in a queue for the operating theatre.

Why silent gallstones are usually left alone

Silent gallstones are usually left alone because most of them stay silent, so removing a healthy gallbladder to deal with stones that are causing no trouble exposes the person to the risks of surgery for little or no benefit. The evidence for watching rather than operating goes back decades: the classic natural-history studies showed that the majority of people with silent stones never go on to need treatment³.

The approach is watch-and-wait. Guidelines reserve gallbladder removal for stones that are causing symptoms or complications, and treat symptom-free stones found by chance as something to observe, not to cut out⁴. Only once stones start causing biliary colic does the arithmetic change: from that point the yearly risk of a complication such as a blocked duct or an inflamed gallbladder runs at about 1 to 4%, which is high enough to tip most people towards surgery⁵. Silent stones simply have not crossed that line. Non-surgical routes do not change the picture either, as covered in can you avoid gallbladder surgery.

When a surgeon still removes silent stones

A surgeon will occasionally advise removing silent gallstones even without symptoms, but only in selected cases judged individually, where the specific risk of leaving the stones is thought to outweigh the risk of the operation. This is a case-by-case decision made by a surgeon examining the person, not a blanket rule⁵.

The situations that prompt it are particular ones: certain stones or gallbladder findings a surgeon regards as higher risk, or an abdomen already being opened for another planned operation, where taking the gallbladder at the same time avoids a second procedure later. What does not justify surgery is the mere presence of stones on a scan, or a general wish to “get them out before they cause problems”. Because the great majority never do, the honest default remains to leave symptom-free stones where they are. Whether your own stones fall into an exception is exactly the question worked through in do I need my gallbladder removed.

What to do if a scan finds silent gallstones

If a scan finds gallstones that have never caused you symptoms, the usual advice is to do nothing to the stones, keep eating normally, and simply learn the warning signs that mean they are no longer silent. No permanent special diet is needed for stones that are behaving, and there is no reliable tablet that clears them⁶.

The signs to know are the ones I ignored for two weeks: a severe, gripping pain high under the right ribs, often an hour or two after a fatty meal, lasting from a few minutes to a few hours. More serious signals are a fever, jaundice (yellowing of the skin or eyes) from a stone in the main bile duct, or persistent severe pain, any of which is a reason to be seen promptly rather than waited out⁶. If an attack does arrive, silent stones become symptomatic stones, and the whole picture of what happens next sits in the pillar guide to gallbladder removal, with the attack itself described in gallbladder attack symptoms.