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Why A Sick Body Needs So Much Vitamin C
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Megadoses: Why?
The Third Face of Vitamin C
Robert F. Cathcart, M.D.
Journal of Orthomolecular Medicine, 7:4;197-200, 1993.
Copyright (C), 1994 and prior years, Dr. Robert F. Cathcart. Permission granted
to distribute via the internet as long as material is distributed
in its entirety and not modified.
ABSTRACT
Bowel tolerance to orally ingested ascorbic acid increases with the toxicity of
diseases. Bowel tolerance with a disease such as mononucleosis may reach 200 or
more grams per 24 hours without it producing diarrhea. A marked clinical
amelioration or cure is achieved in many disease processes when threshold doses
near bowel tolerance are given. In a sense, it is the reducing equivalents
carried by free radical scavengers that quench free radicals, not the free
radical scavengers themselves. Ascorbic acid can be dramatically useful in
quenching free radicals because it is usually tolerated in amounts necessary to
provide the reducing equivalents necessary to quench almost all the free
radicals generated by severe disease processes. Vitamin C functions are
incidental at these dose levels; the benefit is from the reducing equivalents
carried. To the extent that
free radicals are either essential to the perpetuation of a disease or just
part of the cause of symptoms, the disease will be cured or just ameliorated.
These effects are even more dramatic from intravenous sodium ascorbate.
Keywords: vitamin C, ascorbate, acute induced scurvy, bowel tolerance,
titrating to bowel tolerance, the ascorbate effect, free radical scavengers,
reducing equivalents.
INTRODUCTION
A clinical experience prescribing doses of ascorbic acid up to 200 or more
grams per 24 hours to over 20,000 patients during the past 23 year period has
revealed its clinical usefulness in all diseases involving free radicals. The
controversy continues over the value of vitamin C mainly because inadequate
doses are used for most free radical scavenging purposes. Paradoxically, the
non-controversial use of minute doses of
vitamin C in the prevention and treatment of scurvy has set the minds of many
against more creative uses.
I have found vitamin C exceptionally useful in a very high dose range. Its
usefulness is in three such distinct realms that I will describe them as the
three faces of vitamin C.
1. vitamin C to
prevent scurvy (up to 65 mg/day.)
2. vitamin C to
prevent acute induced scurvy and to augment vitamin C functions
(1 to 20 grams/day.)
3. vitamin C to
provide reducing equivalents (30 to 200 or more grams/day.)
One might criticize the wisdom of my use of these massive doses but Klenner had
successfully utilized them previously. The works of Irwin Stone, Linus Pauling,
and Archie Kalokerinos have supported many of my observations. It was apparent
that in all the studies yielding negative or equivocal results, inadequate
doses were used. In some studies, doses barely bordering on adequate, tease the
investigator with statistically
significant but not very impressive beneficial results.
My early discovery was that the bowel tolerance to ascorbic acid of a person
with a healthy GI tract was somewhat proportional to the toxicity of their
disease. Bowel tolerance doses are the amounts of ascorbic acid tolerated
orally that almost, but not quite, cause diarrhea. A patient who could tolerate
orally 10 to 15 grams of ascorbic acid per 24 hours when well, might be able to
tolerate 30 to 60 grams per 24 hours if he had a
mild cold, 100 grams with a severe cold, 150 grams with influenza, and 200
grams or more per 24 hours with mononucleosis or viral pneumonia (1, 2). Marked
clinical benefits in these conditions occur only at the bowel tolerance or
higher levels. I named the process whereby the patient determined the proper
dose as titrating to bowel tolerance. These increases in bowel tolerance in the
vast majority of patients normally tolerant to ascorbic acid (perhaps 80% of
patients) are invariable. The marked clinical
benefits are noted only when a threshold dose, usually close to the bowel
tolerance dose, is consumed. I call this benefit the ascorbate effect.
Most patients are started at first with hourly doses of ascorbic acid powder
dissolved in small amounts of water. Later, after the patient has learned to
accurately estimate the dose necessary to achieve the ascorbate effect,
comparable doses of tablets or capsules are also used. Where patients are
intolerant to adequate amounts of ascorbic acid orally and the severity of the
disease warrants it, intravenous sodium ascorbate is used.
Failures are related to individual difficulties in taking the proper adequate
doses. I now have had 22 years to gather clinical experience and to reflect on
this phenomenon.
I want to emphasize the importance of this increasing bowel tolerance with
increasing toxicities of diseases. The sensation of detoxification one
experiences at these doses is unmistakable.
The effect is so reliable and dramatic in the tolerant patient as to make
obvious the fact that something very important, that has not been widely
appreciated before, is going on.
THE THREE FACES
Vitamin C probably always functions by being an electron donor. At the lowest
dose level (the first face), it is necessary as a vitamin to prevent scurvy. It
is essential for certain metabolic
functions which are well described and mostly non controversial.
At a second level (the second face) vitamin C is still used as a vitamin but
larger doses are necessary to maintain its basic vitamin C functions because
the vitamin is destroyed rapidly in diseased or injured tissues where there is
an overabundance of free radicals. I described the resulting state of
deficiency, if the vitamin C is not replaced, as acute induced scurvy (1, 2).
There is ample evidence of this depletion of vitamin C by stress and disease as
recently reviewed in the literature.
Additionally, the recent extensive research on vitamin C has concerned itself
with certain functions that may be augmented by higher than minimal doses of
vitamin C (20). Strangely, any usefulness of these larger than minimal doses of
vitamin C remain mostly neglected by clinicians. This level is from about 1 to
20 grams a day. Benefits vary from person to person.
At this second level, as in studies reviewed by Pauling (11) and more recently
by Hemil (20), there may be expected a slight decrease in the incidence of
colds but a more significant reduction in the complications and the duration of
colds. Personally, I am impressed by the number of patients (but certainly not
all) who tell me that they have not had a cold for years since reading
Pauling's book and taking vitamin C. Patients with
chronic infections frequently have those infections cured for the first time.
Antibiotics work synergistically with these doses. A surprising number of elderly
persons benefit from doses of this magnitude and may indeed have what Irwin
Stone described as chronic subclinical scurvy (10).
The third level of doses (the third face) is virtually undiscussed in the
literature but is the most interesting. These doses range usually from 30 to
200 grams or more per 24 hours. The most important concept to understand is
that while incidentally at these dose levels the vitamin C performs all the
functions of levels one and two, it is mostly thrown away for the reducing
equivalents it carries (3). With these doses it is possible to saturate the
body with reducing equivalents, neutralize the excessive free radicals, and
drive a reducing redox potential into involved tissues. Inflammations mediated
by free radicals can be eliminated or markedly reduced. In many instances
patients with allergies or autoimmune disease have their humeral immunity
controlled while their cellular immunity is augmented (19). To the extent that
free radicals are either essential to
the perpetuation of a disease or just part of the cause of symptoms, the
disease will be cured or just ameliorated.
The list of diseases involving free radicals continue to grow. Infections,
cardiovascular diseases, cancer, trauma, burns both thermal and radiation,
surgeries, allergies, autoimmune diseases and aging are now included. It is
more difficult to think of a disease that does not involve free radicals.
Progressive nutritionists routinely give vitamin C, vitamin E, beta carotene,
selenium, NAC, etc. to counter free radicals. I certainly agree
with this practice. However, there is one important concept neglected.
In the spirit that if you throw a bucket of water on a fire, it is the water
that puts the fire out, not the bucket; it is the reducing equivalents carried
by the free radical scavengers that quench the free radicals, not the free
radical scavenger itself.
Most of the reducing equivalents utilized by non enzymatic free radical
scavengers do not come from the ingested free radical scavengers but come
through glycolysis, the citric acid cycle, NADPH, FADH2, glutathione, etc.
Dietary free radical scavengers carry in on ingestion only a small percentage
of the total reducing equivalents carried by those scavengers during their
lifetime in the body. After their first pass neutralizing free
radicals, the free radical scavenger must be recharged with reducing
equivalents made available in the mitochondria.
Consider the following: Early in this study a 23-year-old, 98-pound librarian
with severe mononucleosis claimed to have taken 2 heaping tablespoons every 2
hours, consuming a full pound of ascorbic acid in 2 days without it producing
diarrhea. She felt mostly well in 3 to 4 days, although she had to continue
about 20 to 30 grams a day for about 2 months. Subsequently, all my young
mononucleosis patients with excellent GI tracts
have responded similarly and have had equivalent increases in bowel tolerance
during the acute stage of the disease.
I believe that the loose stools caused by excessive doses of ascorbic acid
orally ingested is due to a resulting hypertonicity of ascorbate in the rectum.
Water is attracted into the rectum by the increased osmotic pressure and
results in a benign diarrhea. With toxic illnesses, the ascorbate is destroyed
rapidly in the involved tissues resulting in a rapid
absorption from the gut. Of the ascorbate, what does not reach the rectum, does
not cause diarrhea. Intravenous sodium ascorbate does not cause diarrhea and,
in fact, increases bowel tolerance to orally ingested ascorbic acid while the
IV is running. With hypertonicity of the ascorbate both in the blood and in the
rectum, the osmotic pressure of the ascorbate is more equal on both sides of
the bowel wall so no diarrhea results. If
the diarrhea was cause by other metabolic processes, diarrhea would be caused
by intravenous ascorbate.
It should be noted that in some cases of pathological diarrhea, ascorbic acid
stops the diarrhea. Presumably in these cases some of the increased destruction
of ascorbate is from free radicals in the bowel. However, in most toxic
systemic diseases there is no reason to believe that the destruction of the
additional ascorbate occurs directly in the bowel, so it is a safe hypothesize
that this increased destruction occurs in the
interior of the body.
The increased tolerance to ascorbic acid orally provides an interesting and
somewhat useful measure of the toxicity of a disease. Probably it is somewhat a
measure of the free radicals involved in a disease. I describe a cold that at
its maximum makes it possible for a patient to just tolerate 100 grams of
ascorbic acid orally without diarrhea, a "100 gram cold." Patients,
appearing to be well, who have a tolerance over 20 to 25 grams per 24 hours
probably have some subclinical condition which is being hidden by their own
free radical scavenging system.
Patients with chronic infections (and a normally strong stomach) can ingest
enormous amounts of ascorbic acid. One of my chronic fatigue patients is
functional only because of his ingestion of 65 pounds of ascorbic acid in the
past 12 months. In 22 years, I, personally, have ingested approximately 361
kilos ( 797 lbs ) (4.3 times my body weight) of ascorbic acid because of
chronic allergies and perhaps chronic EBV.
Considering the reducing equivalents carried by such amounts of ascorbic acid,
one can only guess at the turnover rate of the non-enzymatic free radical
scavengers in a patient acutely ill with a 200-gram mononucleosis. However, one
gains the impression that all the non-enzymatic free radical scavengers would
have to be reduced many times a day.
AN ANALOGY
Suppose you owned a farm and on one end of the property there was a barn and on
the other end of the property there was a water well. One day the barn catches
fire and neighbors come with buckets to set up a bucket brigade between the
water well and the barn and are putting out the fire when the well goes
dry.
My use of ascorbate is like thousands of neighbors coming from miles around,
each with a bucketful of their own water, throwing their own water on your fire
once, and then leaving.
CONCLUSION
Because of the invariable (in patients tolerant to ascorbic acid) increasing
bowel tolerance to ascorbic acid in patients roughly in proportion to the
toxicity of their disease, there has to be something happening to ascorbate in
the sick patient other than its being used as
vitamin C in the classic sense. The amelioration or sometimes cure of different
diseases appears related to the importance of free radicals in the perpetuation
of the particular disease.
The sudden marked benefit in many disease processes which is achieved at doses
near to the bowel tolerance level suggests that a reducing redox potential is
forced into the affected tissues only at those dose levels. This ascorbate
effect only at the high dose levels is also suggestive that something other
than classic functions of vitamin C is involved. This ascorbate effect is more
compatible with principles of redox chemistry.
Only a small percentage of the total reducing equivalents donated by non-enzymatic
free radical scavengers to neutralize free radicals, come in on the ingested
nutritional free radical scavengers. Ascorbate is unique in that the body can
tolerate doses adequate to supply the necessary reducing equivalents to quench
the free radicals generated by severely toxic disease processes. The vitamin C
is thrown away for the reducing equivalents it carries. Only in this way can
the large amounts of free radicals generated
by the most toxic disease processes be rapidly quenched.
REFERENCES
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the treatment of disease by titrating to bowel tolerance. J
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10. Stone I. The Healing Factor: Vitamin C Against Disease. Grosset
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11. Pauling L. Vitamin C and the Common Cold. W.H. Freeman and Company,
San Francisco, 1970.
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and Company, San Francisco, 1976.
13. Pauling L. How to Live Longer and Feel Better. W.H. Freeman and
Company, New York, 1986.
14. Kalokerinos A. Every Second Child. Keats Publishing, Inc., New
Canaan, 1981.
15. Cathcart RF. Clinical trial of vitamin C. Letter to the Editor,
Medical Tribune, June 25, 1975.
16. Cathcart RF. Vitamin C in the treatment of acquired immune deficiency
syndrome (AIDS). Medical Hypotheses 1984; 14(4): 423-33.
17. Cathcart RF. Vitamin C: the nontoxic, nonrate-limited, antioxidant
free radical scavenger. Medical Hypotheses 1985; 18:61-77.
18. Cathcart RF. HIV infection and glutathione (Letter to editor concerning
Vitamin C tolerance in AIDS). Lancet 1990; 335(8683);235.
19. Cathcart RF. The vitamin C treatment of allergy and the normally unprimed
state of antibodies. Medical Hypotheses 1986;21(3): 307-21.
20. Hemil H. Vitamin C and the common cold. Br J Nutr 1992;
67:3-16.
__________________________________________________
Robert F. Cathcart, M.D.
Allergy, Environmental, and Orthomolecular Medicine Orthopedic Medicine
127 Second Street, Suite 4, Los Altos, California, USA
Telephone: 650-949-2822
Fax: 650-949-5083
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