Sugar, Vitamin C and Competitive Inhibition

Carboloading of a different variety.Saturday inyou ingest -the more vitamin C you will need.The
Tucson before the 1982 version of the Tucsonmolecules of vitamin C, glucose and fructose very
Marathon we were sitting on the Gentle Ben's patioclosly resemble each other. If you are skeptical of
with some of our running friends from Albuquerquethis, it is a very interesting exercise to check out
having some carbohydrates of the liquid variety. Bobtheir molecular structures (in Stryer's Fourth Edition of
would consume 18 Dos Equis and run a blazing 2:31Biochemistry, vitamin C is on page 455 and sucrose,
marathon the next day. Sitting at another table wasglucose and fructose are on page 471). When you
one of Tucson's running greats, Dr. Tom. Tom at oneget a cold or other infection, white blood cells and
time had run a 2:21 marathon which was near worldmacrophages go to work to rid the body of the
class at that time. Tom was loading yet a differentinvading bacteria or virus. Insulin transports the
variety -a cheeseburger. He would not run as fast asvitamin C into these cells so that they can scurry
Bob the next day and would not run up to hisaround and rid the body of the infectious agent. The
amazing capability.The battle over vitamin C.At thereal problem arises when one ingests any sugar at
1978 version of the Fiesta Bowl marathon in Phoenixall.If there is more glucose(sugar) around than there is
I was lucky enough to hear Dr. Thomas Basslervitamin C, insulin will preferentially allow the sugar to
speak. When it came to running injuries heenter the cell. A blood sugar level of only 120 mg/ml
recommended vitamin C. I had been running 100 mile(normal fasting blood sugar should be 100 mg/ml or
weeks in preparation and was aching all over. Thatless) will reduce the phagocytic index (an index of
day I got a bottle of vitamin C and ran the next daythe cell's ability to rid the body of the bacteria or
with no pain at all. I have been using vitamin C evervirus) by a whopping 75%. Loosely translated, your
since with good results. The battle, however, wouldimmune system slows to a crawl. This is known as
rage on. Dr. R never took vitamin C since he believed"competitive inhibition" ie one molecule competes for
that it did not do any good since most of it he saidthe same spot to get into the cell with another similar
"would be excreted in the urine." Dr. Bassler, on theappearing but biochemically different molecule. The
other hand, stated emphatically that you should notmolecule that is preferred(in this case glucose) inhibits
run if you don't supplement vitamin C. My ownthe entry of the other molecule (in this case vitamin
experience has verified the latter, on an ongoingC).The more sugar you ingest -the more vitamin C
basis for all of my 25 year and two month runningyou will need to fight infection or keep your
streak.Does the human body need supplementalconnective tissues (tendons and ligaments etc) intact.
vitamin C?Before we go any further, let's try toOne should also be aware of the two signs of too
establish first whether or not the body needs vitaminmuch vitamin C, headache and diarrhea. I can't really
C from outside sources, ie foods, drinks orcount the number of times that I would get a
supplements. To do this, we will take a brief look atheadache about the same time, or just after, the
the biochemistry of vitamin C from Stryer'srunning injury I was treating in myself would quit
Biochemistry Fourth Edition. Collagen is the majorhurting.Why orange juice is not a good source of
protein of connective tissue such as the Achille'svitamin C.Over all these years and battles
tendon or the ligaments and tendons of the knee.(discussions) about the need for supplemental vitamin
Without going into a lot of biochemical detail, (C I have heard many times "Oh, I just drink lots of
vitamin C "ascorbate" is necessary for the formationorange juice." The problem with orange juice is that in
of hydroxyproline and it is hydroxyproline thataddition to the vitamin C it also contains large
stabilizes collagen) vitamin C is crucial for the properamounts of sugar. The more you drink the more
synthesis of collagen. Primates (you and me) aresugar you ingest. You may also be getting some
unable to synthesize vitamin C. We have to get itvitamin C but that vitamin C will probably never find
from outside sources.The first observation ofits way into the white blood cells and macrophages
scurvy.Scurvy was first noticed in 1536 by Jacquesbecause its entry into the cell will be competitively
Cartier when it afflicted his men who were exploringinhibited by all the sugar. Lemon juice and lime juice
the Saint Lawrence River."Some did lose all theirwould be better sources since they do not contain as
strength, and could not stand on their feet ...Othersmuch sugar. Optimally you would not consume the
also had all their skins spotted with spots of blood ofjuice but the whole fruit as mother natured intended.
a purple colour: then did it ascend up to their ankles,It would also help to eat a diet high in organic vitamin
knees, thighs, shoulders, arms, and necks. TheirC rich foods (such as the MericleDiet) and supplement
mouths became stinking,their gums so rotten, that allvitamin C as needed. You would also want to take
the flesh did fall off, even to the roots of the teeth,into consideration how much sugar you ingest and
which did also almost all fall out."This is one of theadjust your supplemental dose
earliest descriptions of the disease scurvy. Theaccordingly.Conclusions:The human body has to have
preventative for this was later discovered by avitamin C from outside sources.The dose is different
Scottish physician, Dr. James Lind, in 1753. Hefor different individuals but the concept that
recommended greens or fresh vegetables and ripesupplementing vitamin C is a waste of money
fruits. He urged the inclusion of lemon juice in thebecause "it all goes out in the urine" is completely
sailors' diets. This was ingored for forty years butflawed and has no basis in human biochemistry.Linus
finally the admiralty took his advice and lemon juicePauling was correct in stating that you should take
was included in the sailors' diets. Lime juice was latervitamin C as a supplement until the cold or flu abates.
substituted. Hence the British sailors became knownThis concept was then and still is -biochemically
as "limeys."There is no question -the human bodycorrect.Once competitive inhibition of vitamin C's
does need vitamin C.There is no doubt today thatentry into the cell by glucose was established then
the human cannot synthesize vitamin C and doesthe explanation for the large variance in "doses that
have to obtain it from outside sources. Now that wework" is explained.There is no "magical" dose of
have established the need for vitamin C, let's look atvitamin C.The more sugar you ingest the more
how much vitamin C we need. According to Dr. Tomvitamin C you will need to supplement.Supplemental
we didn't need any additional supplementation outsidevitamin C is a well founded concept and has a solid
of what we got in our normal food sources.basis in human biochemistry.Post Script.I haven't
According to Dr. Bassler you had to supplementheard much lately from Bob other than he was either
vitamin C, especially if you were running since runningwinning or coming in second at the Pike's Peak
is a stress both on the connective tissues of theAscent. The last time I saw Dr. Tom, he was in a full
body, but also a stress on the whole body. Emotionallength leg cast for an anterior cruciate tear in his
stress is another time for supplementation of vitaminknee. I am in the 25th year of my running streak
C, since any stress at all releases vitamin C into the(minimun 4 miles or 30 minutes every day) and just
bloodstream from the tissues and soon it is excretedcompleted a six mile run this morning. My vitamin C
in the urine. The more stress you have to deal withdose is down to about 1 gram a day and I am
the more vitamin C you will need to supplement. Yes,running pain free. As an added bonus I have been
extracellular vitamin C will be excreted in the urine if itabout 25 years without either a cold or flu or even
is not driven back into the cells very quickly.Vitamin Cworse, viral gastroenteritis.Recommended
and the immune system.One of the earlierreading:Stryer Biochemistry Fourth EditionNatural
proponents of vitamin C was Dr. Linus Pauling, whosesources of vitamin C:chili peppers, broccoli, bell
work demonstrated that the body's white blood cellspeppers, kale, cauliflower, strawberries, lemons,
needed high levels of vitamin C "inside the cell" tomustard and turnip greens, brussels sprouts, papaya,
fight infection. Thus, he recommended high doses ofchard, cabbage, spinach, kiwifruit, snow peas,
supplemental vitamin C to fight the common cold.cantaloupe, oranges, grapefruit, limes, tomatoes,
And, both he and Dr. Bassler clearly emphasized thatzucchini, raspberries, asparagus, celery, pineapple,
there was no magical dose -you just took vitamin Clettuce, watermelon, fennel, peppermint, parsley and
until you got better. Dr. Bassler recommended 2collard greens.I don't disagree with those who feel
grams every two hours for running injuries until theythat we should try to get our vitamin C from natural
quit hurting. I have done that and it works.Thesources. I also agree that natural sources are the
phagocytic index, sugar, insulin and competitivebest, however, during periods of intense stress or if
inhibition.Having utilized vitamin C for well over 25you are running a lot, it may not be possible to ingest
years I have often been asked how much should Ienough vitamin C from natural sources to ward off a
take and often wondered myself about the dosagecold, keep your Achille's tendons happy or just keep
levels. This really became apparent when, afteryour head on "straight."To visit the 100% Sugar-Free,
discovering my own adult onset diabetes in July 1997,Vegan and 100% Organic MericleDiet
I quit sugar. My vitamin C dosage level to maintainplease visit: John Mericle M.D. 2005 All Rights
my body for 50-100 mile running weeks plummeted. IReserved is devoted to achieving optimal health and
was startled to discover that the amount I neededpeak performance through diet and lifestyle change.
after I quit sugar was about one quarter of what itDr. Mericle brings together a unique blend of formal
had been while I was still ingesting sugar. Now in thismedical education, 29 marathons, 3 Hawaii Ironman
interesting discussion is the answer.The more sugarcompetitions and a lot of practical real life experience.