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The Truth about Gallbladder and Liver "Flushes"

Peter Moran, MB, BS, BSc(Med), FRACS, FRCS(Eng)

Gallbladder and liver "flushes" are widely advocated as a way of treating gallstones and helping with medical

conditions ranging from allergies to cancer [1-4]. In the usual flush, half a cup or more of a vegetable oil isconsumed together with citrus juice and Epsom salts (magnesium sulphate), usually after a brief fast. Many green

brown, yellow or black blobs of various sizes may later appear in the bowel movements. Some bear a slight

resemblance to gallstones, but they are not stones. They are merely bile-stained "soaps" produced by partialsaponification (soap formation) of the oil. A recent demonstration found that mixing equal volumes of oleic acid

(the major component of olive oil) and lemon juice produced several semi-solid white balls after a small volume o

potassium hydroxide solution was added. After air-drying at room temperature, these balls became quite solid and

hard. When formed in the intestine, these objects absorb bile and become green [5]. It has also been shown that redye will appear in the interior of the stones if consumed with the oil [1].

The fact that the material is due to some kind of transformation of the oil is clear

from user descriptions and ultrasound images. The most obvious evidence is that

the alleged stones float on the toilet water [2,3,6], as might be expected of alargely oil-based substance. Gallstones sink. Patients with medically diagnosed

gallstones may be able to confirm this for themselves by looking at their ownultrasound scans.The stones, if free to move, will settle at the lowest part of thegallbladder, even though bile is much denser than water. The picture to the right

shows a cross-section of the gallbladder (the oblong black area) with three

moderately large stones in the lowermost area.

Supporters of the flushes claim that although some kinds of stones sink in water, cholesterol stones, beingcomposed of lighter material, will float [2,3].That's not true. Cholesterol stones can display some buoyancy while

in the gallbladder, but only by floating between the older, concentrated bile lying in the lowest part of the

gallbladder and the fresher, less concentrated bile above. Radiologists can use this layering effect to determinewhether the stones are likely to be mainly cholesterol and thus suitable for gallstone dissolution using bile salts

such as ursodeoxycholic acid. The same stones will sink in water and also in the slightly denser formol-salinepreservative commonly used in operating rooms when saving the stones for the patient or for laboratory analysis.This is why people accustomed to handling real gallstones simply know that they always sink. Other clues about

the true nature of the "stones" include:

They tend to dissolve into an oily smudge in time, or with heat [5]. Patients are advised to keep them in th

freezer [1,2]. Gallstones are stable.

They have an irregular globular shape and in the many available photos [4] never display the sharply

facetted appearance that gallstones often have when rubbing up against each other in an overcrowded

gallbladder.

They are usually described as soft [7] and waxy or gelatinous [8]. Real gallstones are often very hard an

difficult to crack. Softer gallstones always have a fine, crumbly, dry texture. Gallstones are thus difficult to cut cleanly with a knife, unlike the stones shown at

http://curezone.com/ig/i.asp?i=7072.

They may be bright green and possess a translucency neverseen in gallstones.

They can be produced in amounts far beyond the capacity of either the gallbladder or the entire biliary

system, as long as flushes are continued and regardless of whether the user still has a gallbladder.

Could Gallstones Be Expelled?

It seems likely that gallstones might occasionally be expelled. Small stones are regularly expelled from the

gallbladder. There is some risk that stones over about 5mm in diameter will lodge in the bile duct, but most pass o

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into the bowel and out of the body unnoticed. Gallbladders may spontaneously empty themselves of small stones,

but this is rare [9].

Also, the large oily meal would stimulate strong gallbladder contraction. This could help expel small gallstones or

even, very rarely, a whole crop of small gallstones or sludge. Whether the whole ritual is needed is another matter

A meal of fried fish and chips, or the whole fat milk and a Mars bar sometimes used to stimulate gallbladder

contraction during x-ray examinations might serve as well.

The magnesium sulphate (Epsom Salts) could have an added effect, as it also stimulates gallbladder contractionand relaxes the muscles controlling the release of bile into the intestines. However, it acts in the same way as

would fat or oil, causing the release of cholecystokinin from the upper small intestine [10]. The availability of thahormone and the ability of the gallbladder to respond to it would be limiting factors. The chance of success is

further diminished by the fact that patients with symptomatic gallstones often have impaired ability of the

gallbladder to empty (a factor in gallstone formation), stones that are too big to pass, or a blocked gallbladder duc

(the non-functioning gallbladder in contrast studies).

Moreover, it can be predicted that even if occasionally successful, most patients would go on to form more stones

After successful dissolution of gallstones with ursodeoxycholic acid, 30-50% of patients form new stones within

five years [11]. Despite much research, no simple, safe, or dietary measure has been found to prevent gallstone

formation. The traditional fat-free diet has shown no consistent benefit [12], possibly because an occasional fattymeal helps expel small stones or sludge. This may be why patients on prolonged intravenous feeding are prone to

develop gallstones.

In a popular variant, large quantities of apple juice are consumed in the days prior to the olive oil and lemon juice(or equivalent). Its supporters claim that apple juice is a stone solvent [13], usually offering in support a reference

to the prestigious medical journal, The Lancet[14]. The cited item, Apple juice and the chemical-contact

softening of gallstones, is merely a brief letter to the editor stating that the writer's wife had passed soft, brown,

fatty stones after drinking a lot of apple juice and then a cupful of olive oil, apparently as part of a gallbladderflush. This source offers no evidence that apple juice can soften gallstones. Actually, there is no way for apple

juice or any other agent taken by mouth to come into contact with stones in the gallbladder or bile ducts. A very

effective sphincter muscle prevents intestinal contents from leaking back into the bile duct or gallbladder. Thusthere is no logical reason to believe that any of the materials consumed in the "flushes" (oils, fruit juices,

magnesium sulfate) could soften or otherwise affect the characteristics of gallstones in the gallbladder or bile duct

Bile salts such as ursodeoxycholic acid can do so, but they must be absorbed into the blood stream and processedby the liver before they can affect the ability of bile to dissolve cholesterol stonesand a minimum of nine month

of treatment is usually required.

Liver Stones

"Flush" proponents claim that liver stones are common, and one has even stated that 99.95% of cancer patients

have them [8]. However, stones within the small liver ducts are very rare, at least in Western communities, asmight be expected because the bile produced by the liver is 5-10 times less concentrated than gallbladder bile.

Small stones released by the gallbladder will occasionally drift into a liver duct. Otherwise stones mainly only

develop in the liver ducts secondary to other serious biliary pathology such as strictures, choledochal cysts or bileduct cancers. Their rarity, even in patients known to be prone to stone formation is illustrated by a recent study on

patients with gallstones but with no other biliary problems [7]. Only 3.5% of such patients were found to have

stones in the bile ducts when imaging studies (cholangiography) were performed during their surgery. At least 95%of such stones were in the main bile duct, usually beyond the entrance of the gallbladder duct. Cholangiography

can detect stones as small as 1-2 mm in the narrow liver ducts.

Are the Flushes Safe?

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In patients with reasonable health and no complicating factors, flushes are generally safe. Consuming fatty foods

may carry a comparable risk of stones getting stuck in the wrong place and provoking biliary colic orcomplications such as acute pancreatitis. Similar concerns once applied to gallstone dissolution using

ursodeoxycholic acid and to the shattering of gallstones with shock wave lithotripsy, but in practice complications

are fewer than expected. I cannot recall yet seeing any reports of harm from a gallbladder/liver flush.

The greatest risk may apply to those who postpone surgery despite being at risk of major complications i.e. thosewith regular symptoms or who have recovered from potentially lethal complications such as acute pancreatitis or

acute cholangitis (bile duct infection).

One woman who complained that her gallstones were unchanged on ultrasound despite three apparently fruitfulflushes was advised that to up to 25 flushes may be needed. The above considerations suggest that very, very few

will succeed no matter how many times they flush.

References

1. Anonymous. Science Project: Dyeing to know the answer. CureZone posting, accessed Feb 18, 2007.

2. Clark HR. The Cure for all Diseases. Chula Vista, CA: New Century Press, 1995.3. Liver flush & liver cleansing & gallstones: Frequently asked questions (FAQ). CureZone posting, accesse

Feb 18, 2007.

4. Liver flush at CureZone file & image gallery, accessed Feb 18, 2007'5. Sies CW, Brooker J. Could these be gallstones? Letter The Lancet 365:1388, 2005. (Full text available aft

free registration.)

6. Clark J. Liver / gallbladder cleanse. Jim Clark's Web site, accessed Feb 18, 20077. Wong C. Liver flush. Alternative Healing Centre Web site, accessed Feb 18, 2007.

8. Kelley WD. O ne Answer to Cancer. Kelley Foundation, 1974.

9. Gray R. Disappearing gallstones: Report of 2 cases. British Journal of Surgery Volume 61:101-103, 1974.

10. Wiener I and others. Correlation between gallbladder size and release of cholecystokinin after magnesiumsulfate in man. Annals of Surgery197:412-415, 1983.

11. Collins C et al. A prospective study of common bile duct calculi in patients undergoing laparoscopic

cholecystectomy: Natural history of choledocholithiasis revisited. Annals of Surgery 239:28-33, 2004.12. Sabiston DC. Textbook of Surgery: The Biological Basis of Modern Surgical Practice. Philadelphia:

Saunders,

13. Georgiou GJ. Flush gallstones naturally. Worldwide Health center Web site, Nov 13, 2003.14. R Dekkers. Apple juice and the chemical-contact softening of gallstones. Lancet 25:354, 2171, 1999.

This article was revised on March 9, 2007.

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