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Orthomolecular Psychiatry
Orthomolecular psychiatric therapy is the treatment of mental disease by the provision of the optimum molecular environment for the mind, especially the optimum concentrations of substances normally present in the human body
Varying the concentrations of substances
normally present in the human body may control mental disease.
Linus
Pauling, Ph.D.
Main Points:
The proper functioning of the mind is known to require the presence in the brain of molecules of many different substances.
For example, mental disease, usually associated with physical disease, results from a low concentration in the brain of any one of the following vitamins: thiamine (B1), nicotinic acid or nicotinamide (B3), pyridoxine (B6), cyanocobalamin (B12), biotin (H), ascorbic acid (C), and folic acid.
There is evidence that mental function and behavior are also affected by changes in the concentration in the brain of any of a number of other substances that are normally present, such as L(+)-glutamic acid, uric acid, and gamma-aminobutyric acid (6).
Summary
The functioning of the brain is affected by the
molecular concentrations of many substances that are normally present in the
brain.
The optimum concentrations of these substances for a person may differ greatly from the concentrations provided by his normal diet and genetic machinery.
Biochemical and genetic arguments support the idea that orthomolecular therapy, the provision for the individual person of the optimum concentrations of important normal constituents of the brain, may be the preferred treatment for many mentally ill patients.
Mental symptoms of avitaminosis sometimes are observed long before any physical symptoms appear. It is likely that the brain is more sensitive to changes in concentration of vital substances than are other organs and tissues.
Moreover, there is the possibility that for some persons the cerebrospinal concentration of a vital substance may be grossly low at the same time that the concentration in the blood and lymph is essentially normal.
A physiological abnormality such as decreased permeability of the bloodbrain barrier for the vital substance or increased rate of metabolism of the substance in the brain may lead to a cerebral deficiency and to a mental disease.
Diseases of this sort may be called localized cerebral deficiency diseases.
It is suggested that the genes responsible for
abnormalities (deficiencies) in the concentration of vital substances in the
brain may be responsible for increased penetrance of the postulated gene for
schizophrenia, and that the so-called gene for schizophrenia may itself -be a
gene that leads to a localized cerebral deficiency in one or more vital
substances.
Full Article.....very dense
Varying the concentrations of substances
normally present in the human body may control mental disease.
Linus
Pauling, Ph.D.
The methods principally used now for treating patients
with mental disease are psychotherapy (psychoanalysis and related efforts to
provide insight and to decrease environmental stress), chemotherapy (mainly with
the use of powerful synthetic drugs, such as chlorpromazine, or powerful natural
products from plants, such as reserpine), and convulsive or shock therapy
(electroconvulsive therapy, insulin coma therapy, pentylenetetrazol shock
therapy).
I have reached the conclusion, through
arguments summarized in the following paragraphs, that another general method of
treatment, which may be called orthomolecular therapy, may be found to be of
great value, and may turn out to be the best method of treatment for many
patients.
Orthomolecular psychiatric therapy is the treatment of mental
disease by the provision of the optimum molecular environment for the mind,
especially the optimum concentrations of substances normally present in the
human body
1). An example is the treatment of phenylketonuric children by use of a diet containing a smaller than normal amount of the amino acid phenylalanine. Phenylketonuria (2) results from a genetic defect that leads to a decreased amount or effectiveness of the enzyme catalyzing the oxidation of phenylalanine to tyrosine.
The patients on a normal diet have in their tissues abnormally high concentrations of phenylalanine and some of its reaction products, which, possibly in conjunction with the decreased concentration of tyrosine, cause the mental and physical manifestations of the disease (mental deficiency, severe eczema, and others).
A decrease in the amount
of phenylalanine ingested results in an approximation to the normal or optimum
concentrations and to the alleviation of the manifestations of the disease, both
mental and physical.
The functioning of the brain is dependent on its
composition and structure; that is, on the molecular environment of the mind.
The presence in the brain of molecules of N,N-diethyl-D-lysergamide, mescaline,
or some other schizophrenogenic substance is associated with profound psychic
effects (3). Cherkin has recently pointed out (4) that in 1799 Humphry Davy
described similar subjective reactions to the inhalation of nitrous oxide. The
phenomenon of general anesthesia also illustrates the dependence of the mind
(consciousness, ephemeral memory) on its molecular environment (5).
The
proper functioning of the mind is known to require the presence in the brain of
molecules of many different substances.
For example, mental disease, usually associated with physical disease, results from a low concentration in the brain of any one of the following vitamins: thiamine (B1), nicotinic acid or nicotinamide (B3), pyridoxine (B6), cyanocobalamin (B12), biotin (H), ascorbic acid (C), and folic acid.
There is evidence that mental function and behavior
are also affected by changes in the concentration in the brain of any of a
number of other substances that are normally present, such as L(+)-glutamic
acid, uric acid, and gamma-aminobutyric acid (6).
Optimum Molecular
Concentrations
Several arguments may be advanced in support of the thesis
that the optimum molecular concentrations of substances normally present in the
body may be different from the concentrations provided by the diet and the gene
controlled synthetic mechanisms, and, for essential nutrilites (vitamins,
essential amino acids, essential fatty acids) different from the minimum daily
amounts required for life or the "recommended" (average) daily amounts suggested
for good health. Some of these arguments are presented in the following
paragraphs.
Evolution and Natural Selection
The process of evolution
does not necessarily result in the normal provision of optimum molecular
concentrations.
Let us me ascorbic acid as an example. Of the mammals that have been studied in this respect, the only species that have lost the power to synthesize ascorbic acid and that accordingly require it in the diet are man, other Primates (rhesus monkey, Formosan long-tail monkey, and ring-tail or brown capuchin monkey), the guinea pig, and an Indian fruit-eating bat (Pteropus medius) (7).
Presumably the loss of the gene or genes controlling the synthesis of the enzyme or enzymes involved in the conversion of glucose to ascorbic acid occurred some 20 million years ago in the common ancestor of man and other Primates, and occurred independently for the guinea pig and for one species of bat and one bird, in each case in an environment such that ascorbic acid was provided by the food.
For a mutation rate of 1/20,000 per gene generation and for even a very small advantage for the mutant (0.01 percent more progeny) the mutant would replace the earlier genotype within about I million years.
The advantage to the mutant of being rid of the ascorbic-acid-synthesis machinery (decrease in cell size and energy requirement, liberation of machinery for other purposes) might well be large, perhaps as much as I percent; a disadvantage nearly as large (less by 0.01 percent) resulting from a less than optimum supply of dietary ascorbic acid would not prevent the replacement of the earlier species by the mutant.
Hence, even if the amount of the vitamin provided by the diet available at the time of the mutation were less than the optimum amount, the mutant might still be able to replace its predecessor.
Moreover, it is
possible that the environment has changed during the last 20 million years in
such a way as to provide a decreased amount of the vitamin. Even a serious
disadvantage of the changed environment would not lead to a mutation restoring
the synthetic mechanism within a period of a few million years, because of the
small probability of such mutations, far smaller than of those resulting in loss
of function.
Fig. 1. Diagrammatic representation of growth rate or
other vital property of an organism as function of the concentration of vital
substance in the organism, showing the concentration at which the differential
advantage of an increased amount of vital substance is just balanced by the
differential disadvantage resulting from an increased amount of machinery for
synthesis, and the concentration that gives optimum functioning without
consideration of the burden of the machinery for synthesis. Fig. 2 (right). The
observed rate of growth of a pyridoxine-requiring Neurospora mutant (Beadle and
Tatum, 1941), as function of the concentration of pyridoxine in the
medium.
Moreover, the process of natural selection may be
expected later on to lead to the survival of a species or strain that
synthesizes somewhat less than the optimum amount of an autotrophic vital
substance rather than of the species or strain that synthesizes the optimum
amount. To synthesize the optimum amount requires about twice as much biological
machinery as to synthesize half the optimum amount.
As suggested in Fig. 1, the
evolutionary disadvantage of synthesizing a less than optimum amount of the
vital substance may be small, and may be outweighed by the advantage of
requiring a smaller amount of biological machinery. Evidence from the study of
microorganisms is discussed in the following paragraphs.
Evidence from
Microbiological Genetics
Many mutant microorganisms are known to require, as
a supplement to the medium in which they are grown, a substance that is
synthesized by the corresponding wild-type organism (the normal strain). An
example is the pyridoxine-requiring mutant* of Neurospora sitophila reported by
G. W. Beadle and E. L. Tatum in their first
Neurospora paper, published
in 1941 (8). Several species of Neurospora that have been extensively studied
are known to be able to grow satisfactorily on synthetic media containing
inorganic salts, an inorganic source of nitrogen, such as ammonium nitrate, a
suitable source of carbon, such as sucrose, and the vitamin biotin. All other
substances required by the organism are synthesized by it. Beadle and Tatum
found that exposure to x-radiation produces mutant strains such that one
substance must be added to the minimum medium in order to permit the growth at a
rate approximating that of the normal strain. Their pyridoxine-requiring mutant
was found to grow on the standard medium at a rate only 9 percent of that of the
normal strain. When pyridoxine (vitamin B6) is added to the medium, the rate of
growth of this strain at first increases nearly linearly with the concentration
of the added pyridoxine. and then increases less rapidly, as shown in Fig. 2
(9). The growth rate of the normal strain without added pyridoxine is equal to
that of the mutant with about 10 micrograms of the growth substance per liter in
the medium. At a concentration about four times this value (40 micrograms per
liter) the growth rate of the mutant strain reaches a value 7 percent greater
than that of the normal strain without added pyridoxine.
The point of
maximum curvature of the curve in Fig. 2, at about 3.2 micrograms of pyridoxine
per liter (indicated by a cross), may be reasonably considered to mark the
division between the region of vitamin deficiency (to the left) and the region
of normal vitamin supply (to the right), such as might permit the mutant to
compete with the wild type, which has the growth rate represented by the filled
circle in Fig. 2. The point marked by the cross might well correspond to an
"adequate" or "recommended" amount of the vitamin, in that the growth rate of
the mutant is only 12 percent less than that of the wild strain, and that the
amount of the vitamin would have to be increased threefold to make up this 12
percent (10).
As shown in Fig. 2, quadrupling the concentration of
pyridoxine that gives the mutant a growth rate equal to that of the wild type
causes a further increase in growth rate by nearly 10 percent. The growth rates
of the mutant and the wild type at very large concentrations of the vitamin have
not been measured, so far as I know, and the optimum concentration is not known.
From the work of Beadle and Tatum the optimum concentration may be taken to be
greater than 40 micrograms per liter; that is, more than ten times the
"adequate" concentration for the mutant and more than four times the
concentration equivalent to the synthesizing capability of the wild type. The
growth rate of the mutant at the optimum concentration is more than 22 percent
greater than that at the "adequate" concentration and more than 9 percent
greater than that of the normal strain.
Similar results have been
reported for other mutants of Neurospora. The values found by Tatum and Beadle
(11) for a p-aminobenzoic-acid-requiring mutant of Neurospora crassa as a
function of the concentration of p-aminobenzoic acid added to the standard
medium are shown in Fig. 3. The growth-rate curve is similar in shape to that
for the pyridoxine-requiring mutant. The value of the growth rate for the normal
strain of Neurospora crassa with no added p-aminobenzoic acid is equal to that
for the mutant at a concentration of added p-aminobenzoic acid of about 15
micrograms per liter. A value about 4 percent greater is found for the normal
strain at 40 micrograms per liter and for the mutant strain at 80 micrograms per
liter, as indicated in Fig. 3.
Fig. 3 (left). The observed rate
of growth of a p-aminobenzoic-acid-requiring Neurospora mutant (Tatum and
Beadle, 1942), as function of concentration of the growth substance in the
medium. Fig. 4 (right). Observed rate of growth of a paraminobenzoic
acid-requiring Neurospora mutant as function of the logarithm of the
concentration of p-aminobenzoic acid.
It is customary to plot
values of the growth rate against the logarithm of the concentration of the
growth substance, as shown in Fig. 4. The amount of increase accompanying a
doubling in the concentration of the growth substance is a maximum at 1.25 to
2.5 micrograms per liter, and decreases thereafter to about half the value for
each successive doubling.
From these two examples we see that there may
be a significant increase in rate of growth of the normal strain through
addition of some of the growth substance that it synthesizes to the medium in
which it is grown; that is, that the amount of the growth substance that is
synthesized by the normal strain is not the optimum amount, but is somewhat
less- approximately 7 percent less in the case of pyridoxine (with the normal
strain of Neurospora sitophila) and 4 percent less for p-aminobenzoic acid (with
the normal strain of Neurospora crassa). Many other examples are known of
microorganisms that grow more abundantly in a medium containing vitamins, amino
acids, or other substances that they are able to synthesize than on a minimum
medium.
Evidence supporting the above arguments has been presented
recently by Zamenhof and Eichhorn (11a) in a paper entitled "Study of microbial
evolution through loss of biosynthetic functions: Establishment of 'defective'
mutants." These authors carried out experiments involving competitive growth in
a chemostat of an auxotrophic mutant (a mutant requiring a nutrilite) and a
prototrophic parent in a medium of constant composition containing the
nutrilite. They found that the "defective" mutant has a selective advantage over
the prototrophic parental strain under these conditions. For example, an
indole-requiring mutant of Bacillus subtilis was found to show a strong
selective advantage over the prototrophic back-mutant when the two were grown
together in a medium containing tryptophan; the relative number of cells of the
latter decreased 10(6)-fold in 54 generations. They also found that greater
advantage to the auxotroph accompanies a greater number of biosynthetic steps
that have been dispensed with (earlier block in a series of reactions), with the
final metabolite available. They point out that a mutant with a gene deletion
would be at a distinct selective advantage over a point mutant, in that not only
the synthesis of the metabolite, but also that of the structural gene, the
messenger RNA, and perhaps the inactive enzyme itself would be dispensed with,
and that accordingly the mutant with a deletion would replace the point mutant
in competition. They mention evidence that some of the "defective" strains
occurring in nature have lost one or more of their structural genes by
deletions, rather than by point mutations.
Molecular Concentrations and
Rate of Reaction
Most of the chemical reactions that take place in living
organisms are catalyzed by enzymes. The mechanisms of enzyme-catalyzed reactions
in general involve (i) the formation of a complex between the enzyme and a
substrate molecule and (ii) the decomposition of this complex to form the enzyme
and the products of the reaction. The rate determining step is usually the
decomposition of the complex to form the products, or, more precisely, the
transition through an intermediate state of the complex, characterized by
activation energy less than for the uncatalyzed reaction, to a complex of the
enzyme and the products of reaction, with a rapid dissociation. Under conditions
such that the concentration of the complex corresponds to equilibrium with the
enzyme and the substrate, the rate of the reaction is given by the following
equation [the Michaelis-Menten equation (12)]:
In this equation
[S] is the concentration of the substrate, E is the total concentration of
enzyme (present both as free enzyme and enzyme complex), K is the equilibrium
constant for formation of the enzyme complex ES, and k is the reaction-rate
constant for decomposition of the complex to form the enzyme and reaction
products. This equation corresponds to the case in which there are no enzyme
inhibitors present.
Values of the reaction rate calculated from this
equation for different values of K are shown in Fig. S. The curves are similar
in shape to those of Figs. 2 and 3. At concentrations much smaller than K (-1)
the reaction rate is proportional to the concentration of substrate. At larger
concentrations, as the amount of enzyme complex becomes comparable to the amount
of free enzyme, the reaction rate changes from the linear dependence. At
substrate concentration equal to K (-1) the slope of the curve is one-quarter of
the initial slope, and the value is one-half of the value corresponding to
saturation of the enzyme by the substrate.
The similarity of the curves
of Figs. 2 and 3 to appropriate curves in Fig. 5 suggests that the growth
substance may be involved in an enzyme-catalyzed reaction in which it serves as
the substrate. The normal strain of the organism manufactures an amount of the
substrate such as to permit the reaction to take place at what may be considered
a normal rate, 90 or 95 percent of the maximum rate, which corresponds to
saturation of the enzyme. As described above, the gain in reaction rate
associated with the manufacture of a larger amount of the substrate, with a
corresponding advantage to the organism, might be balanced by the disadvantage
to the organism associated with the upkeep of the larger amount of machinery
required to manufacture the increased amount of substrate. An increase in rate
of this reaction could also be achieved by an increase in the amount of the
enzyme synthesized by the organism. Here, again, the advantage to the organism
resulting from this increase may be overcome by the disadvantage associated with
the increase in the amount of machinery required for the increased synthesis.
During the process of evolution there has presumably been selection of genes
determining the concentrations of the enzymes catalyzing successive reactions
such as to achieve an approximation to the optimum reaction rate with the
smallest amount of disadvantage to the organism.
The rate of an
enzyme-catalyzed reaction is approximately proportional to the concentration of
the reactant, until concentrations that largely saturate the enzyme are reached.
The saturating concentration is larger for a defective enzyme with decreased
combining power for the substrate than for the normal enzyme. For such a
defective enzyme the catalyzed reaction could be made to take place at or near
its normal rate by an increase in the substrate concentration, as indicated in
Fig. 5. The short horizontal lines intersecting the curves indicate what may be
called the "normal" reaction rate, 80 percent of the maximum. For K = 2 the
"normal" rate is achieved at substrate concentration [S] = 2. At this substrate
concentration the reaction rate is only 29 percent of the maximum and 35 percent
of "normal" for a mutated enzyme with K = 0.2; it could be raised to the
"normal' value by a tenfold increase in the substrate concentration, to [S] =
20. Similarly, the still greater disadvantage of low reaction rate for a mutated
enzyme with K only 0.01 could be overcome by a 200-fold increase in substrate
concentration, to [S] = 400, This mechanism of action of gene mutation is only
one of several that lead to disadvantageous manifestations that could be
overcome by an increase, perhaps a great increase, in the concentration of a
vital substance in the body. These considerations obviously suggest a rationale
for megavitamin therapy.
Molecular Concentrations and Mental
Disease
The functioning of the brain and nervous tissue is more sensitively
dependent on the rate of chemical reactions than the functioning of other organs
and tissues. I believe that mental disease is for the most part mused by
abnormal reaction rates, as determined by genetic constitution and diet, and by
abnormal molecular concentrations of essential substances. The operation of
chance in the selection for the child of half of the complement of genes of the
father and mother leads to bad as well as to good genotypes, and the selection
of foods (and drugs) in a world that is undergoing rapid scientific and
technological change may often be far from the best. Significant improvement in
the mental health of many persons might be achieved by the provision of the
optimum molecular concentrations of substances normally present in the human
body. Among these substances, the essential nutrilites may be the most worthy of
extensive research and more thorough clinical trial than they have yet received.
One important example of an essential nutrilite that is required for mental
health is vitamin B12, cyanocobalamin. A deficiency of this vitamin, whatever
its cause (pernicious anemia; infestation with the fish tapeworm
Diphyllobothrium, whose high requirement for the vitamin results in deprivation
for the host; excessive bacterial flora, also with a high vitamin requirement,
as may develop in intestinal blind loops), leads to mental illness, often even
more pronounced than the physical consequences. The mental illness associated
with pernicious anemia [a genetic defect leading to deficiency of the intrinsic
factor (a mucoprotein) in the gastric juice and the consequent decreased
transport of cyanocobalamin into the blood] often is observed for several years
in patients with this disease before any of the physical manifestations of the
disease appear (13). A pathologically low concentration of cyanocobalamin in the
serum of the blood has been reported to occur for a much larger fraction of
patients with mental illness than for the general population. Edwin, Holten,
Norum, Schrumpf, and Skaug (14) determined the amount of B12 in the serum of
every patient over 30 years old admitted to a mental hospital in Norway during a
period of I year. Of the 396 patients, 5.8 percent (23) had a pathologically low
concentration, less than 101 picograms per millilitre, and the concentration in
9.6 percent (38) was subnormal (101 to 150 picograms per millilitre). The normal
concentration is 150 to 1300 picograms per millilitre. The incidence of
pathologically low and subnormal levels of B1, in the serums of these patients,
15.4 percent, is far greater than that in the general population, about 0.5
percent (estimated from the reported frequency of pernicious anemia in the area,
9.3 per 100,000 persons per year). Other investigators (15) have also reported a
higher incidence Of low B12 concentrations in the serums of mental patients than
in the population as a whole, and have suggested that B12 deficiency, whatever
its origin, may lead to mental illness.
Nicotinic acid (niacin), when its
use was introduced, cured hundreds of thousands of pellagra patients of their
psychoses, as well as of the physical manifestations of their disease. For this
purpose only small doses are required; the recommended daily allowance (National
Research Council) is 12 milligrams per day (for a 70-kilogram male). In 1939
Cleckley, Sydenstricker, and Geeslin (16) reported the Successful treatment of
19 patients and in 1941 Sydenstricker and Cleckley (17) reported similarly
successful treatment of 29 patients with severe psychiatric symptoms by use of
moderately large doses of nicotinic acid (0.3 to 1.5 grams per day). None of
these patients had physical symptoms of pellagra or any other avitaminosis. More
recently many other investigators have reported on the use of nicotinic acid and
nicotinamide for the treatment of mental disease. Outstanding among them are
Hoffer and Osmond, who since 1952 have advocated and used nicotinic acid in
large doses. in addition to the conventional therapy, for the treatment of
schizophrenia (18-20). The dosage recommended by Hoffer is 3 to 18 grams per
day, as determined by the response of the patient, of either nicotinic acid or
nicotinamide, together with 3 grams per day of ascorbic acid. Nicotinic acid and
nicotinamide are nontoxic [the lethal dose, 50 percent effective (LD50), is not
known for humans, but probably it is over 200 grams; the LD,50 for rats is 7.0
grams per kilogram for nicotinic acid, and 1.7 grams per kilogram for
nicotinamide], and their side effects, even in continued massive doses, seem not
to be commonly serious. Among the advantages of nicotinic acid, summarized by
Osmond and Hoffer (19), are the following: it is safe, cheap, and easy to
administer, and it is a well-known substance that can be taken for years on end,
if necessary, with only small probability of incidence of unfavourable side
effects.
Another vitamin that has been used to some extent in the
treatment of mental disease is ascorbic acid, vitamin C. A sometimes-recommended
daily intake of ascorbic acid is 75 milligrams for healthy adults. Some
investigators have estimated that the optimum intake is much larger (21):
perhaps 3 to 15 grams per day, according to Stone (22). Williams and Deason (23)
have emphasized the variability of individual members of a species of animals;
they have reported their observation of a 20-fold range of required intake of
ascorbic acid by guinea pigs, and have suggested that human beings, who are less
homogeneous, have a larger range.
Mental symptoms (depression) accompany
the physical symptoms of vitamin-C deficiency disease (scurvy). In 1957
Akerfeldt (24) reported that the serum of schizophrenics had been found to have
greater power of oxidizing N,N dimethyl-p-phenylenediamine than that of other
persons. Several investigators then reported that this difference is due to a
smaller concentration of ascorbic acid in the serum of schizophrenics than of
other persons. This difference has been attributed to the poor diet and
increased tendency to chronic infectious disease of the patients (25), and has
also been interpreted as showing an increased rate of metabolism of ascorbic
acid by the patients (26). It is my opinion, from the study of the literature,
that many schizophrenics have an increased metabolism of ascorbic acid,
presumably genetic in origin, and that the ingestion of massive amounts of
ascorbic acid has some value in treating mental disease.
Other vitamins
(thiamine, pyridoxine, folic acid) and other substances [zinc ion, magnesium
ion, uric acid, tryptophan, L(+)-glutamic acid, and others] influence the
functioning of the brain. I shall review work on L(+)-glutamic acid as a further
example. L(+)-Glutamic acid is an amino acid that is present at rather high
concentration in brain and nerve tissue and plays an essential role in the
functioning of these tissues (27). It is normally ingested (in protein) in
amounts of 5 to 10 grams per day. It is not toxic; large doses may cause
increased motor activity and nausea. In 1944 Price, Waelsch, and Putnam (28)
reported favourable results for glutamic acid therapy of convulsive disorders
[benefit to one Out of three or four patients with petit mal epilepsy (29)].
Zimmerman and Ross then reported an increase in maze-running learning ability of
white rats given extra amounts of glutamic acid (30). Zimmerman and many other
investigators then studied the effects of glutamic acid on the intelligence and
behavior of persons with different degrees and kinds of mental retardation.
L(+)-Glutamic is apparently more effective than its sodium or potassium salts.
The effective dosage is usually between 10 and 20 grams per day (given in three
doses with meals), and is adjusted to the patient as the amount somewhat less
than that required to cause hyperactivity; improvement in personality and
increase in intelligence (by 5 to 20 I.Q. points) have been reported for many
patients with mild or moderate mental deficiency by several investigators
(31).
Fig. 5 (left). Curves showing calculated reaction rate RIR. of
catalyzed reaction as function of the concentration of the substrate, for
different values of the equilibrium constant K for formation of the
enzyme-substrate complex. Fig. 6 (right). Values of the concentration of a vital
substance in the blood and in the cerebrospinal fluid for three different
assumed sets of value of bloodbrain barrier permeability and rate of destruction
in the cerebrospinal fluid.
Localized Cerebral Deficiency
Diseases
The observation that the psychosis associated with pernicious anemia
may manifest itself in a patient for several years before the other
manifestations of this disease become noticeable has a reasonable explanation:
the functioning of the brain and nervous tissue is probably more sensitively
dependent on molecular composition than is that of other organs and tissues. The
observed high incidence of cyanocobalamin deficiency in patients admitted to a
mental hospital, mentioned above, suggests that mental disease may rather often
be the result of this deficiency, and further suggests that other deficiencies
in vital substances may be wholly or partly responsible for many cases of mental
illness.
The foregoing arguments suggest the possibility that under
certain circumstances a deficiency disease may be localized in the human body in
such a way that only some of the manifestations usually associated with the
disease are present. Let us consider, for example, an enzyme or other vital
substance that is normally metabolized by the catalytic action of an enzyme
normally present in the tissues and organs of the body. In a person of unusual
genotype there might be an especially great concentration of this enzyme in one
body organ, with essentially the normal amount in other organs. Through the
action of this enzyme in especially great concentration the steady-state
concentration of the vital substance in that organ might be decreased to a level
much lower than that required for normal function. Under these circumstances
there would be present a deficiency disease restricted to that organ.
An
especially important case is that of the brain. We may, as a rough model of the
human body, consider two reservoirs of fluid, the blood and lymph, with volume
VI, and cerebrospinal fluid, the extracellular fluid of the brain and spinal
column, with volume V2. We assume that a vital substance is destroyed in each of
these reservoirs at a characteristic rate, corresponding to the rate constants
k1 and k2, that it diffuses across the blood-brain barrier at a rate determined
by the product of the permeability and area of the barrier and the difference c2
- c1 of the concentrations in the two reservoirs, and that it is introduced from
the gastrointestinal tract into the first reservoir at a constant rate. The
steadystate concentrations are then in the ratio
c1/c2 = 1 +
(K2V2/PA)
where PA is the product of permeability and the area of the
blood-brain barrier. The steady state corresponds to the following
system:
From this equation it is seen, as shown also in Fig. 6,
that for small values of k2V2/PA the difference in steady-state concentrations
in the cerebrospinal fluid and the blood is small, but that through either
decrease in permeability of the barrier or increase in the metabolic rate
constant k2 the steady-state concentration in the brain becomes much less than
that in the blood.
This simple argument leads us to the possibility of a
localized cerebral avitaminosis or other localized cerebral deficiency disease.
There is the possibility that some human beings have a sort of cerebral scurvy,
without any of the other manifestations, or a sort of cerebral pellagra, or
cerebral pernicious anemia. It was pointed out by Zuckerkandl and Pauling (32)
that every vitamin, every essential amino acid, every other essential nutrilite
represents a molecular disease (33) which our distant ancestors learned to
control, when it began to afflict them, by selecting a therapeutic diet, and
which has continued to be kept under control in this way. The localized
deficiency diseases described above are also molecular diseases, compound
molecular diseases, involving not only the original lesion, the loss of the
ability to synthesize the vital substance, but also another lesion, one that
causes a decreased rate of transfer across a membrane, such as the bloodbrain
barrier (34), to the affected organ, or an increased rate of destruction of the
vital substance in the organ, or wine other perturbing reaction,
It has been
suggested by Huxley, Mayr, Osmond, and Hoffer (35), partially on the basis of
the observations of Böök (36) and Slater (37) on the incidence of schizophrenia
in relatives of schizophrenics, that schizophrenia is caused by a dominant gene
with incomplete penetrance. They suggested that the penetrance, about 25
percent, may in some cases be determined by other genes and in some cases by the
environment. I suggest that the other genes may in most cases be those that
regulate the metabolism of vital substances, such as ascorbic acid, nicotinic
acid or nicotinamide, pyridoxine, cyanocobalamin, and other substances mentioned
above, The reported success in treating schizophrenia and other mental illnesses
by use of massive doses of wine of these vitamins may be the result of
successful treatment of a localized cerebral deficiency disease involving the
vital substances, leading to a decreased penetrance of the gene for
schizophrenia. There is a possibility that the so-called gene for schizophrenia
is itself a gene affecting the metabolism of one or another of these vital
substances, or even of several vital substances, causing a multiple cerebral
deficiency.
I suggest that the orthomolecular treatment of mental disease, to
be successful, should involve the thorough study of and attention to the
individual, such as is customary in psychotherapy but less customary in
conventional chemotherapy. In the course of time it should be possible to
develop a method of diagnosis (measurement of concentrations of vital
substances) that could be used as the basis for determining the optimum
molecular concentrations of vital substances for the individual patient and for
indicating the appropriate therapeutic measures to be taken. My co-workers and I
are carrying on some experimental studies suggested by the foregoing
considerations, and hope to be able before long to communicate some of our
results.
Summary
The functioning of the brain is affected by the
molecular concentrations of many substances that are normally present in the
brain.
The optimum concentrations of these substances for a person may differ greatly from the concentrations provided by his normal diet and genetic machinery.
Biochemical and genetic arguments support the idea that orthomolecular therapy, the provision for the individual person of the optimum concentrations of important normal constituents of the brain, may be the preferred treatment for many mentally ill patients.
Mental symptoms of avitaminosis sometimes are observed long before any physical symptoms appear. It is likely that the brain is more sensitive to changes in concentration of vital substances than are other organs and tissues.
Moreover, there is the possibility that for some persons the cerebrospinal concentration of a vital substance may be grossly low at the same time that the concentration in the blood and lymph is essentially normal.
A physiological abnormality such as decreased permeability of the bloodbrain barrier for the vital substance or increased rate of metabolism of the substance in the brain may lead to a cerebral deficiency and to a mental disease.
Diseases of this sort may be called localized cerebral deficiency diseases.
It is suggested that the genes responsible for
abnormalities (deficiencies) in the concentration of vital substances in the
brain may be responsible for increased penetrance of the postulated gene for
schizophrenia, and that the so-called gene for schizophrenia may itself -be a
gene that leads to a localized cerebral deficiency in one or more vital
substances.
References and Notes
1.I might have described this therapy
as the provision of the optimum molecular composition of the brat.. Th. brain
provides the molecular environment of the mind. I use the word mind as a
convenient synonym for the functioning of the brain, The word orthomolecular may
be criticized as a Greek-Latin hybrid. I have suit, however, found any other
word that expresses a well the idea of the right molecules in the right
amounts
2.A. Felling, Nord. Med. Tidsk,. 9, 1054 (1934). Z. Physiol.
Chem. 277, 169 (1934).
3.See, for example, D. W. Woolley, The Biochemical
Bases of Psychoses (Wiley. New York, 1962).
4.A. Cherkin, Science 155,
266 (1967).
5. L. Pauling Ibid. 134, 15 (1961); S. Miller, Proc Not.
Acad. Set. U.S. 47, 1515 (1961).
6.The literature Is so extensive that I
refrain from giving references, here
7. For references see, 1. Stone,
Amer. J. Phys. Anthropol. 23, 93 (1965). The only other vertebrate known to
require exogenous ascorbic acid is the red-vented bulbul Pycnonotus
rates.
8. G. W. Beadle and E. L. Tatum, Proc. Nat. Acad. Sci. U.S. 27,
499 (1941).
9. The Points in Fig. 2 =present my measurement of the
stripes of the growth curves shown in fig. 1 of reference (8)- They agree
closely with the points of fig. 2 of reference (8) except for one Point, that
for 1.2 µg/liter, which may have been misplotted.
10.The reported growth
rate for the normal strain in a medium with 40 as of added pyridoxine, Per liter
is 3 percent greater than that for the basic medium, as shown by the slopes of
the lines in reference (8), fig. 1.
11. E. L. Tatum ad G. W. Beadle,
Proc. Nat Acad. Set. U.S, 28, 234 (1942).
11a. S. Zamenhof and H. H.
Eichhorn, Nature 216, 465 (1967).
12.L. Michaelis and M. Menten, Biochem.
Z. 49, 333 (1913).
13.A. D. M. Smith, Brit. Med. J. 11, 1840
(1950).
14. R. Edwin, K. Holten K.R. Norum. A. Schrumf, 0.E. Skaug, Act.
Med. Scand. 171: 689 (1965).
15. T. Ran.. 0. J. Rafaelson P. Rødbro,
Laurel 1966-II. 965 . (1966). report serum Br concentration below 150 pg/ml in
13 of I" consecutive patients admitted to a Copenhagen psychiatric clinic; J. G.
Henderson, R. W. Strachan. J. S. Beck, A. A. Dawson, M. Daniel, ibid., p. 809.
report that nine of 1012 unselected Psychiatric patients in a region in Scotland
were found to have B12 deficiency, in addition to five pernicious anemia
patients in the group.
16. H. M. Cleckley, V. P. Sydenstricker, L. F.
Geeslin, J. Amer. Med. Ass. 112, 2107 (1939)
17. V. P. Sydenstricker and
14. M. Cleckley, Amer. J. Psychiat. 99 83 (1941). References am given in this
paper to some earlier work on nicotinic acid therapy.
18. A. Hoffer, H.
Osmond, M. J. Callbeck, I Kahan, J Clin Exp Psychopathol 18, 131 (1957); A.
Hoffer, Niacin Therapy I. Psychiat, (Thomas, Springfield, Ill.,
1962).
19. H. Osmond & A. Hoffer, Lancet 1962-II, 316 (1962); review
of a 9-year, study.
20. A. Hoffer & H. Osmond, Acid Psychiat. Scand.
40, 171 (1964); A- Hoffer, Int. J. Neuropsychiat 2, 234 (1966).
21.For
example, E. D. Kyhos, E. I. Sevringhaus, D. R. Hagendorn, Arch. Int. Med. 75,
407 (1945), found that for wine subjects 1.5 to 2.8 grams. Per day as- needed
for saturation.
22. I. Stone, Perspect. Biol. Med. 10, 135 (1967); Act.
Genet Med Gemell. 15, 345 (1966).
23. R. J. Williams and G. Deason, Proc.
Nat. Acad. Sci. U.S. 37, 1638 (1967).
24. S. A. Akerfeldt, Science 125,
117 (1957).
25. J. D. Benjamin, Psychosom. Med. 20, 427 (1958); S. S.
Kety, Science 129, 1528, 1590 (1959).
26. A. Hoffer and H. Osmond, The
chemical Basis of Clinical Psychiatry, (Thomas, Springfield, Ill., 1960), p.
232; M. H. Briggs, New. Zealand Med. J. 61, 229 (1962),
27. H.
Weil-Malherbe Mechem J. 30, 665 (1936).
29. J. G. price, H. Waelsch, T.
J. Parallel, J. Amer. Med. Ass. 122 (1944).
29. H. Waelsch Amer. J.
Ment.. Defic. 52, 305,(1948)
30.F. T. Zimmermam and S. Ross, Arch.
Neurol. Psychiat. 51, 446 (1944).
31. A recent survey of the role of
glutamic acid in cognitive behaviors has been published by W. Vogel, D. M.
Broverman, J. 0. Draguns, E, L. Klaiber, Psychol. Bull. 65, 367 (1966)- Many
references, to earlier work are given in this Paper.
32. E. Zuckerkandl
and L. Panting, in Horizon. in Biochemistry, M. Kasha and R. Pullman, Eds.
(Academic Press, New York, 1962), P. 189
33. L. Painting, H. A. Itano, S.
1. Singer, I C. Wells, Science 110, 543 (1949).
34. It has been suggested
by B. Melander and S. Martens, Dis. Nerv. Syst. 19, 478 (1959); Acta Psychiat.
Neurol. Scand. 34, 344 (1959). and by A. Hoffer and H. Osmond, Int. J.
Neuropsychiat. 2, 1 (1966), that the effects of taraxein. [R. G. Heath. S.
Martens, B. E. Leach, M. Cohen, C. A- Feigley, Amer. J. Psychiat. 114, 917
(1958)] may result from changing the permeability of the blood-brain
barrier.
35. J. Huxley, E. Man. H. Osmond, A. Hoffer, Nature 204, 220
(1964),
36. J. A. Böök, Arm Genet. Stairs. Med. 4 (1) (1953); Proc. Int.
Congr. Genet. 10th 1, 81 (1958).
37.I. E. Slater. Acta Genet. Statist.
Mail. 9, 50 (1958).
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