How Vitamin C Works in the Body written by Tessa Jupp Ref: “Age-Defying Diet” R Atkins MD St Martin's Press New York 2000 "Why Animals Don't Get Heart Attacks" M Rath MD Health Now San Fran.1998 Perspectives in Nutrition G Wardlow Mc Graw-Hill USA 1999 "Nutritional Augmentation of Oncology Care" paper by C Simone MD at 2nd World Conference of Nutrition and Vitamin Therapy in San Fran 2000
We have just seen that Vitamin C is important in
maintaining arterial wall membranes, thus reducing arteriosclerosis, rather
than taking cholesterol reducing drugs. Let’s look at some of the
other ways Vitamin C works in the body.
In the diagram opposite you can see where in the
digestive tract, many of the nutrients in our foods leave the gut to enter the
blood stream. Minerals calcium, magnesium and iron all leave the gut not
long after they leave the stomach. They are better absorbed in a slightly
more acid environment.
Vit C is acidic and is also a reducing agent ie it
works as an antioxidant by donating or receiving extra oxygen to stabilise
another molecule, like iron, making it more soluble so that it can be
absorbed. This is why the doctor may tell us to take Vit C at the same
time we take iron tablets. Iron tends to bind up the bowels but as
well as changing iron to a more absorbable form, taking a little more Vit C
than the body really needs will attract more water back to the bowel by
osmosis, keeping faeces soft and easier to keep moving through the gut. This
way we don’t get constipated. Conversely, too much Vit C will give us
diarrhoea, as too much water will be drawn back to the gut. This will
leave our circulation levels low so we need to drink sufficient water not to
become dehydrated and thirsty. This is also an excellent way of
determining how much Vit C we need - enough to keep our bowels working
regularly every day without effort but not to make them too loose.
Note that magnesium and calcium use the same
absorption sites so should not be taken together or they will be competing to
use the same "gates". These 3 minerals leave the gut early,
which explains why magnesium works so quickly (within 5 -15 minutes)
particularly when taken on an empty stomach. Phytates found in grains
bind minerals so that they can’t be absorbed so avoid eating cereals, bread
etc at the time you take minerals.
Glucose, from carbohydrate foods leaves the gut
soon after and this stimulates insulin release to prepare body cells for glucose
and energy production. Fat and water soluble vitamins leave the gut
next. Vit C is a water soluble vitamin so is absorbed at this
point. It also uses the same receptors as glucose to enter the cell
membrane. So if we have eaten a lot of simple sugars, as in sweets, cool
drink etc, less Vit C can be absorbed because the receptors are already in
use. Complex carbohydrates, vegetables and grains release glucose more
slowly so there is less competition for receptors sites. Proteins, amino acids,
fats and water leave the gut in succession after this.
Sodium and potassium leave further on down the gut,
followed by B12 ( intrinsic factor in the stomach prepares B12 for absorption
here) and bile, that enters after food leaves the stomach to help protein and
fat digestion, is reabsorbed here too. The large intestine gives up more
sodium and potassium, water, acids and gases before the remaining undigestible
food bulk moves on to the rectum for exit from the body.
Vitamin C is similar in structure to glucose.
Animals that can make their own Vit C use glucose to make Vit C. When
we need Vit C we crave sweet foods because if we ate as nature intended,
the only sweet foods available would be fruit, which would supply us with Vit C
and satisfy our need for something sweet.
Vit C is required for many chemical reactions in
the body, from carnitine and sperm production to immune function in dealing
with colds, cancer etc In 1935 Dr Klenner reports successfully
curing polio with 80 Gm of Vit C per day.
Dr Simone speaking on "Augmentation of
Oncology Care" at the 2nd World Conference of Nutrition and Vitamin
Therapy in San Fran 2000, told how a high dose of Vit C deprives quickly
dividing cells of the necessary oxygen for growth by its antioxidant properties.
Cancer cells and also viruses and bacteria, that depend on getting extra
glucose to promote cell division, can be flooded by excess Vit C which uses the
same receptor sites to enter the cell in competition with glucose. The
extra Vit C shuts down the oxidative energy reaction in cancer cells,
inhibiting protein kinase C which increases cell division and
proliferation. This disables oncogene expression and increases the body’s
inhibitory growth factor. In fact antioxidants decrease abnormal cell
growth rate, whilst eating lots of sugar rich and high cholesterol foods
feeds cancer cells and other fast dividing cells like viruses etc.
There have been over 350 studies that show the success of Vit C used in this
way. Large doses are required to flood the system. That is why it
is recommend we take 1000-2000mg of Vit C 1 -2 hourly when we are sick or to
bowel tolerance (which will increase in times of sickness and stress.)
Another area Vit C is very important in is collagen
synthesis. Collagen is fibrous connective tissue that lines surfaces. eg
skin, blood vessels, bone, tendons etc. It consists of 3 polypeptide
chains wound together like a plaited rope. If the strands are tangled
instead of plaited, the rope or lining is weak and leaky. So we get
thin fragile skin and other body linings that leak, bruise easily, break down,
bleed, swell up, heal poorly. Skin becomes itchy, and/or a burning,
crawling sensation when Vit C is low. Heat rash responds to extra Vit C,
skin temperature improves and blood pressure is lowered. Vit C increases
HDL levels leading to a reduction in cholesterol. It also has a blood
thinning role and is an excellent alternative (so is Vit E) to take instead
of aspirin to thin the blood. Vit C inhibits platelet aggregation that
leads to clotting. Vit C and Vit E work almost as well as Warfarin.
If doctors doubt this ask them to do a clotting time to see - I have.
Drugs like Tagamet, Zantac, Sudafed, cortisone and broad spectrum antibiotics,
block antioxidants passing into cells so predispose to cancer. Aspirin
breaks down collagen, in joints too. Vit C however, builds it up.
Processed foods like white flour and sugar, have
lost vital vitamins and minerals in refining so are major causes of high
blood pressure, heart disease, arthritis, cancer, diabetes etc,
primarily due to electrolyte imbalance, including low Vit C. In diabetes,
increased blood glucose and insulin resistance, block the entry of Vit C to
cells so depressing the immune system for up to 5 hours after ingesting sugary
foods. This results in poor healing, increased cholesterol, being
infection prone, peripheral neuropathy and cataracts.
Vit C and Vit B5 are the main ingredients of cortisone
and adrenaline production, and also depress histamine and allergic
reactions. For these reasons Vit C helps control asthma and hay fever,
and helps with stress.
It is important to take the right sort of Vit C for
your blood group. O and B need a calcium ascorbate. A1 and AB need
sodium ascorbate. A2 needs a combination of both calcium and sodium
ascorbates.
|
Blood
Group |
Type of
Vitamin C |
Example |
|
O |
Calcium Ascorbate |
Golden Glow C-Complex Sustained Release |
|
A1 |
Sodium Ascorbate |
Herb Valley Sodium Ascorbate |
|
A2 |
Calcium + Sodium Ascorbate |
Golden Glow Bio-C |
|
B |
Calcium Ascorbate + bioflavinoids |
Golden Glow C-Complex Sustained Release |
|
AB |
Ascorbic Acid |
Melrose Ascorbic Acid |
Alternatively, orange flavoured for O and
AB. Blackcurrant flavoured for A1, A2 and B.
Split the dose, take 2 or 3 times a day and take to bowel
tolerance to be most effective.