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spEEdfrEEk

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Posts posted by spEEdfrEEk

  1. CATEGORY: biology/metabolism

    TECHNICAL: ****

    SUMMARY:

    This document gives the rather technical/intimate

    details of how someone who is low-carb and ketogenic can

    sustain a weightlifting session and have the energy to do so

    start through finish.

    It's a pretty rough read for those uninterested in

    the biomedicine, so I'll give you the short version here.

    Your body accomplishes this task by using the "waste products"

    of active muscle exercise: lactate (which gives you that

    burning feeling) and pyruvate (another precursor to the

    glucose generation process) to synthesize new glucose in the

    liver. This new sugar is then sent back into the bloodstream

    for use by the active muscle.

    It's important to realize that amino acids are part

    of this process, so be sure to get enough protein in your

    diet as well as fats, or you may risk muscle loss (to the

    conversion process).

    Incidentally, you will also notice (as I have) that

    because of this glucose generation process - if you check for

    excess ketones in the urine stream (with ketostix) right after

    you train - you'll see that you're temporarily non-ketogenic.

    That is why it is a good idea to follow up a weight

    lifting session with a little easy, short aerobic work. Cycling,

    for example, can more rapidly remove the excess lactate from

    the working muscle and convert it back to muscle/liver glycogen.

    This not only reduces your post-workout soreness, but

    also drops your blood sugar and speeds you back into a ketogenic

    state. (and primes your muscles with stored glycogen for the

    next lifting session)

    -------------------------------------------------------------

    Subject: The anabolic diet...

    Date: Sun, 4 Jun 1995 13:22:37 -0500 (CDT)

    Hello!

    I finally found the answer I was looking for regarding the anabolic

    diet. When people (my adv. nutrition teacher, biochemistry professor

    etc.) put me on the spot, I have reluctantly explained the diet based

    upon the manuals findings, which I explained were not technical enough,

    and had real difficulty convincing them. But now I finally found an

    answer that is technical enough, and explains the reasoning behind this

    ever so commonly asked question; "since weight training is anaerobic,

    where is your energy going to come from when you don't consume enough

    carbs, since glycolysis is the major pathway involved in anaerobic

    exercise?". Well I finally struck pay dirt. It took an inordinate

    amount of time, too much time in fact, and I am going to call Optimum

    Training Systems and request that they revise the manual or add an

    addendum in which this is explained more in depth. Like I said, you are

    going to be hard pressed when someone in the know starts battering away

    with technical questions, that the diet doesn't provide. Sure the manual

    tells you that dietary and body fat will be the fuel for your workouts

    along with the creatine from the red meat, but that doesn't cut it. Which

    finally leads me to this answer.

    Since anaerobic wt. training HAS to go through glycolysis, I thought

    that readdressing that pathway might lead me to an answer, and it did. As

    you know the 2 hormones insulin and glucagon work together, when carbs

    are present, insulin secretion from the pancreas increases, and times

    when carbs are low, glucagon secretion increases to supply carbs for

    energy. When going through glycolysis there are 3 regulatory steps, one

    of them involves the enzyme PFK-1 (phospofructokinase-1). It is one of

    the reactions that are catalyzed early in glycolysis, the third step If I

    recall correctly. Anyway, it seems that this enzyme PFK-1 is sensitive

    to levels of carbs in the blood. When carbs are low, as in the diet,

    glucagon is going to be chronically activated, which in turn will

    influence the enzyme PFK-1. When this happens, it tells the metabolic

    pathway that glucose just is not available, and therefore the reaction of

    glycolysis can not proceed in the normal fashion. THat is why it is a

    regulatory step. When this happens, glycolysis basically skips all the

    normal steps and proceeds to the end where pyruvate is formed. From

    there pyruvate can be converted (broken down) to lactate. Once lactate

    is formed from a reaction catalyzed be lactate dehydrogenase, lactate has

    no other metabolic fate than reconversion to pyruvate. Hence, lactate is

    commonly considered a metabolic dead end. Since lactate formation

    catalyzed by lactate dehydrogenase regenerates NAD+ from NADH, the

    pathway of glycolysis is complete, with NAD+ becoming available for

    glyceraldehyde 3 phosphate dehydrogenase reaction. Thus no net oxidation

    or reduction takes place during anaerobic glycolysis to lactate. The

    final product, lactate in glycolysis generates 2 mol ATP per mol of

    glucose consumed. Oxygen is not required in either case. In most cells,

    the majority of ATP is produced by oxidative phosphorylation, which is

    strictly an oxygen dependent process. Yet, in the cornea of the eye, for

    example, oxygen availability is limited by poor blood circulation.

    Anaerobic glycolysis meets the need for ATP in the abscence of sufficient

    oxygen for oxidative phosphorylation. When skeletal muscle is active,

    lactate and pyruvate are transported out of the muscle cells and carried

    via the circulatory system to the liver where lactate is converted to

    pyruvate by the action of hepatic lactate dehydrognease. Pyruvate can be

    further metabolized in various ways by the liver: a fraction of it is

    aerobically oxidized to Co2 via the Krebs cycle (citric acid cycle), and

    some of it is transaminated to alanine, which is used in protein

    synthesis. Pyruvate in liver cells can also be converted back to free

    glucose by gluconeogenesis. Liver is the principal organ responsible for

    regulating the supply of blood glucose to other cells of the body,

    including skeletal muscle cells. Thus, a portion of the metabolic burden

    of muscular contraction is borne by the liver, which metabolizes the

    by-products of muscle activity (lactate and pyruvate) and synthesizes

    blood glucose. This inter-organ metabolism, in which liver receives

    lactate and pyruvate and furnishes glucose for skeletal muscle, where

    glucose is glycolytically metabolized to generate ATP, is referred to as

    the Cori Cycle.

    Hope this reaches all the doubters out there who were not convinced

    the first time! Thanks!

    Jeffrey P. Krabbe

    Pre-Dietetics, Senior

    University of Nebraska, Lincoln

    :cool: TJ :cool:

  2. At the Moment I'm dong a sort of spEEdfrEEk's eating Plan & XNikX's Weight Workout (Hello Pain!)

    Heh heh heh, it gets easier.. :grin:

    I was wondering, what supplements should I take.

    1. a good multivitamin without iron

    2. a good antioxidant supplement (extra C, E, beta carotine)

    3. potassium

    4. calcium

    5. magnesium

    6. zinc

    7. iodine

    and for immuno enhancement:

    8. flax seed oil

    9. AFA blue-green algae

    Cretaine (get ready for a flame from spEEdfrEEk) :)

    Only if you want to overwork your kidneys and add waterweight

    you your frame. The extra weight leaves as soon as you quit

    taking the creatine.

    Hey spEEdfrEEk, do you have a website yourself with your wisdom on?

    Used to. It's been taken down. I have been reposting the messages

    here, but took the last few weeks of due to the holidays. (everyone

    should eat badly over the holidays :lol: )

    If you ever want free Webhosting let me know, you & others have helped me heaps! :)

    I'll ask my old web hoster/mistress if she can give me the raw files

    for rehosting..

    :cool: TJ :cool:

  3. I've heard that DynoJet uses a different numbering system

    for their jets than Honda does. That true? If so, anyone

    know where a conversion chart is located?

    I'm working on Jetting a bike and it ain't a Bird :wink:

    Thanks!

    :cool: TJ :cool:

  4. CATEGORY: biology/immune_sytem

    TECHNICAL: **

    SUMMARY:

    This document is one that I have made reference, a number

    of times, to a few of you about. It is the original paper that

    discusses the adverse effects of sugar on the leukocytic index.

    As some of you may remember, you are generally not succeptable

    to viral attack or tumor growth if your immune rsponse is kept at

    high levels (more specifically, the strength and count of your NK

    cells). However, when exposed to sugars, the immune state is

    weakened considerably. Is it any wonder that we suffer from so

    many forms of cancer, and viral infections when the typical american

    diet is so high in refined, processed, carbohydrates? Most americans

    repeatedly supress their immune systems at regular intervals daily!

    -------------------------------------------------------------

    Sugar and Immunity

    _________________________________________________________________

    Leukocytic Index proves the devastating effect of refined carbohydrates on

    immunity.

    Many people have been asking for a mechanism for the depressed

    immunity seen in people who eat sugar and other refined carbohydrates.

    Many are known but the Leukocytic Index is an especially helpful one for

    many people to begin to take this health risk seriously.

    More than 20 years ago a large study was published about the effects

    of refined carbohydrates (of which sweets are the worst) on the leukocytic

    index. Our white cells are the most important factors in protecting us

    from invading organisms. The leukocytic index is a measure of how many

    organisms one white blood cell (WBC) can eat in an hour. Therefore an

    index of 10 means that that one WBC ate 10 organisms in THAT hour.

    The average LI (leukocytic index) in the USA--and remember, average

    is not as healthy as one can get--is about 13.9. Within 15 minutes, after

    an individual eats the amount of refined carbohydrates normally ingested

    in the evening meal --about 100 grams, the leukocytic index drops to about

    1.4. Depending on the genetic susceptibility to this problem, it might be

    better or worse--this is just an average. Diabetics ALWAYS have a LI of

    less than 2.

    That means: the average person loses more than 90% of their immune

    function within 15 minutes of indulging in this poisonous substance. This

    deficiency lasts for about 2 hours after the stress occurs.

    What is routinely given intravenously during surgery? Glucose water!

    When Ringer's Lactate (which has no sugar) is used instead, the incidence

    of post operative infection is reduced by two thirds. The only reason I

    can think of for this kind of persistent ignorance is that there is no

    money in changing the thinking of operative routine. There is a lot more

    money in treating the infections that are created by the Allopathic

    Monopoly.

    Since this has been known for more than 20 years, don't you think it

    is time for this information to get out to the public?

    :cool: TJ :cool:

  5. CATEGORY: diets/paleo

    TECHNICAL: **

    SUMMARY:

    This is an interesting little document that I found quite a long

    time ago. It attempts to shatter the myth that neolithic humans (in

    Europe) were primarily plant eaters. This is significant when one

    considers the arguments made by vegans/vegetarians that human beings

    are, and have always been, primarily herbivores.

    Many on this list know that I staunchly believe that humans

    consumed a majority of animal based food and not vegetable foods. This

    does not mean I advocate a meat-only diet. It does, however, mean that

    I encourage the consumption of mostly fiberous veggies (and herbs, etc.),

    and getting a majority of calories from protein and fat sources.

    If this research proves to be correct, then it indicates

    something that is pretty important from an evolutionary point of view.

    Namely, that humans (of european origin/background) may not have had as

    much time to adapt to a grain based diet as expected. The previous

    estimate was about 20,000 years. This document argues otherwise (4,000 -

    2,000 years).

    Should that be the case, then it's very unlikely we've had time

    to adjust to such a quick change in diet (from animal to grain). And,

    that adds fuel to the argument that grains are contributing

    significantly to the increase in diseases of degeneration so prominent

    today...

    -------------------------------------------------------------

    British Archaeology, no 12, March 1996: Features

    _________________________________________________________________

    Bone analysis suggests Neolithic people preferred meat, writes Mike

    Richards. `First farmers' with no taste for grain

    The Neolithic period is traditionally associated with the beginning

    of farming, yet in Britain - by contrast with much of the rest of Europe -

    the evidence has always been thin on the ground. Where are the first

    farmers' settlements? Where are the fields?

    The almost complete absence of this kind of evidence has led some

    archaeologists, over recent years, to question the view that people in

    Britain actually grew most of their food in the 4th and 3rd millennia BC.

    Now, a scientific study of Neolithic human bone seems to point in the same

    revisionist direction.

    The small-scale study - the first of its kind - of the bones of about

    23 Neolithic people from ten sites in central and southern England,

    suggests that these `first farmers' relied heavily on animal meat for

    food, or on animal by-products such as milk and cheese, and that plant

    foods in fact formed little importance in their diet. The bones date from

    throughout the Neolithic, c 4100BC - c 2000BC.

    The study was based on the idea that our bodies are made up of

    organic and inorganic components derived from the foods we have eaten.

    There are a number of ways of tracing the original food source of some of

    our tissues, and one way is to look at the relative ratios of certain

    elements, known as `stable isotopes', in bone protein.

    These stable isotopes can tell us a number of things about what a

    person's diet has been for most of their life. One particular isotope can

    tell us whether humans were getting most of their food from plant or

    animal sources. Generally speaking, this is done by comparing human

    isotope values to animal isotope values. If the human values are more like

    that of a herbivore (eg, horses or cattle) they are eating a great deal of

    plant food, and if they are more like carnivores (eg, wolves or foxes),

    they are eating more meat.

    A number of human bones from the Iron Age and from Romano-British

    sites were also tested, and their isotope values were a little higher than

    those of herbivores. This is as we might expect, as there is little doubt

    that in these periods people practised relatively intense cereal

    agriculture, and only supplemented their diet with meat. The Neolithic

    results, however, were surprisingly different. They were as high, and

    sometimes even higher, than stable isotope values of carnivores. This

    suggests the Neolithic people had relatively little plant food in their

    diet and instead were consuming large amounts of meat. It could also mean

    they were eating a lot of animal by-products, like milk and cheese, as

    these are indistinguishable from meat itself using stable isotopes.

    So what, then, was the Neolithic economy based on? Animal remains

    from Neolithic sites are generally of domestic species (eg, cattle and

    pig) rather than wild, and cattle from Neolithic sites such as Hambledon

    Hill in Dorset are actually larger than the cattle typically found in the

    Iron Age. This evidence may suggest an animal-dependent economy - indeed,

    one in which animals were well treated and kept for a long time - and, as

    the Neolithic specialist Andrew Sherratt has suggested, the British

    Neolithic may have been characterised by a `secondary products

    revolution', with animal husbandry and an emphasis on animal milk and

    cheese, instead of by an `agricultural revolution' and the growing of

    crops.

    Grain and agricultural implements have, of course, been found at

    Neolithic sites in Britain. The isotope results do not rule out some

    limited grain production and consumption; but they suggest it did not form

    a significant portion of the diet. The sites where grain has been found

    generally seem to have been used mainly for ritual purposes, and it is

    possible (as archaeologists such as Richard Bradley and Julian Thomas have

    argued) that in Britain, on the edge of Europe, grain was grown, or even

    imported from the continent, only for ritual purposes. Agricultural

    implements may also have assumed a largely ritual significance.

    There are, however, potential difficulties with stable isotope

    analysis. The main concern is whether the animal stable isotope data used

    as a benchmark are accurate for the specific British Neolithic sites

    tested. In the study, we took `average animal values' from a large

    database, held at the Oxford Radiocarbon Accelerator Unit, covering all

    Europe over the past 10,000 years. It may be that there are regional

    variations in plant and animal isotope values of which we are, as yet,

    unaware. Research, however, continues - and if our preliminary results are

    confirmed, we may be able to scrap the notion of Neolithic

    agriculturalists in Britain once and for all.

    Mike Richards is a PhD student at the Research Laboratory for Archaeology

    in Oxford

    :cool: TJ :cool:

  6. If I hadn't ended up with a ridiculously low price for mine, I'd take it back and get the Ryobi.

    Japanese tools are built with the same concepts of quality in

    mind as Japanese motorcycles..

    Be it Ryobi, Makita, etc.

    :cool: TJ :cool:

  7. CATEGORY: diets/lowcarb

    TECHNICAL: *

    SUMMARY:

    This document was written by an individual who was on

    another health/training list that I was a part of back in 1996.

    In this note, he describes (in detail) one of the earliest low-carb

    diets ever recorded, "the banting diet". The author does a really

    good job documenting the chronology of everything, and even

    discusses his own successes using the approach at the end. As you

    read through it, you will find suggested diet plans for the banting

    approach. Though I agree with low-carb diets in general, I would

    make the case that this is not an optimal approach. In my view,

    paleo-lowcarb is the only way to go. I will discuss that in the

    future as well as provide my exact diet for everyone's scrutiny.

    -------------------------------------------------------------

    A few days ago I discovered this group while "surfing" and

    contributed an opinion in the "Dr. Atkins vs the World" thread.

    Basically, it pointed out that Dr. Atkins was a johnny-come-lately in the

    low-carbohydrate scheme of things. The low-carbohydrate diet seems to

    have originated with "A Letter of Corpulence", published in London in

    1864 by a man named William Banting. It was so popular in the U.K. that

    one may still find in the Oxford English Dictionary the verb "to bant" as

    well as "banting" and "bantingism". My copy of the Oxford English

    Dictionary quotes an editor's response to a correspondent:

    Pall Mall Gazette - 12 June 1865

    "If he is....gouty, obese, and nervous, we strongly recommend him to

    bant."

    So the low-carbohydrate way of eating predates calorie counting as a

    method of weight control, though it does not predate the earlier method,

    STARVATION, - poor ol' Henry VIII!

    There is a low-carbohydrate diet which works as swiftly as any

    proposed by Dr. Atkins, which does not involve placing a human being into

    artificial starvation, with the throwing off of ketones, and resultant

    straining of the kidneys.

    If you want to throw away those ketostix, or use them as coffee stirrers,

    read on.

    Dr. William D. Howe was a well-known medical doctor and a member of

    the Canadian parliament in Ottawa, representing the riding of

    Hamilton-South for the NDP (Socialist) party. In March of 1965 a column

    was written in "The Ottawa Journal" mentioning that fact that many

    formerly obese members of parliament were looking slim- and-trim these

    days, thanks to a method of weight control devised by Dr. Howe, and the

    diet was given. This casual mention brought a flood of mail. In two

    months Dr. Howe had mailed out 1500 copies, the Ottawa Journal's files

    had been stripped of clippings, and the national radio (C.B.C.) had done

    a 15 minute report on it. On Monday, May 3, 1965 and Tuesday, May 4th,

    the Ottawa Journal reprinted the diet along with a number of articles

    concerning it. Since I have the clippings (and would never part with

    them) I am excerpting the relevant material here:

    <<OPEN QUOTE - Ottawa Journal, May 3, 1965>>

    You May Eat:

    Meat, even fat meat

    Milk and cream

    Fish, cheese and eggs

    Butter and margarine

    Leafy vegetables such as lettuce, cabbage, spinach

    Stem vegetables such as asparagus, celery, broccoli

    Coffee & tea with cream and saccharin/sweetener

    You Must Eat:

    Vitamin C - 100 mg daily in unsweetened tablet form

    (inexpensive at drug store).

    Some form of vegetable oil such as corn, taken straight

    or splashed on salads. (1 tbsp)

    You Must not Eat:

    Bread

    Any dessert

    Seed vegetables such as peas & beans

    Root vegetables such as beets, parsnips, turnips, potatoes

    Or anything containing sugar, starch, or flour.

    Dr. Howe: "In 2 months I cut from 220 to 172 and trimmed my waist 11

    inches"

    Murdo Martin (NDP MP for Timmins): "Down I came in 10 weeks from 268 to

    227, with 7 inches and 7 notches off my belt line."

    Eric Winkler (Conservative MP): "I pared down from 226 pounds to 193 in

    6 weeks."

    It is important to realize with this diet that quantity is not the,

    or even a factor. The diet eliminates almost all carbohydrates, which

    most of us eat in large proportions. Carbohydrates come in the form of

    sugar, starch and flour.

    The logic of this diet is that our bodies are unable to use surplus

    carbohydrates and therefore they are converted to fat and stored --

    usually around the waist.

    We lose the fat and the fat only, while building up muscle, blood

    and other tissues with no loss of energy, no failure of drive or a

    lessening of zest for living.

    The diet is self limiting -- when the fat is gone, you stop losing

    weight and remain constant at your natural and correct level.

    "I tell you", says Martin enthusiastically, "this diet works.

    What's more, you feel like a million bucks on it - lots of energy, drive

    to burn - and you don't go around, as on most diets, feeling like a

    grizzly bear."

    "I swear on it," says Mr. Winkler with conviction, "this diet does

    it, not only painlessly but pleasantly. The only fault I found with it,

    I went down so fast I couldn't get my suits taken in quickly enough to

    match the belt-line

    Dr. Howe's "Eat & Drink Up Diet" is so short, so simple, some people

    suspect there must be more to it.

    There really isn't.

    It's all there under 3 headings:

    You May Eat

    You Must Eat

    You Must Not Eat

    It covers broadly all foods.

    <<CLOSED QUOTE - The Ottawa Journal, May 3, 1965>>

    The following day, responding to requests for suggested menus, the

    following was published:

    <<OPEN QUOTE - The Ottawa Journal, May 4, 1965>>

    Breakfast:

    Tomato Juice, liquid or jellied consomme, sauerkraut juice or avocado.

    Bacon or ham and eggs, all you can eat. Coffee, tea or milk.

    Lunch:

    Martini or Scotch & water, etc. *if desired*. Any cold meat: Beef, ham,

    turkey, lamb, chicken, pork, salami, bologna, veal, tongue, liver, lean

    or fat it doesn't matter. Salad with an oil & vinegar dressing or blue

    cheese (*not* Thousand Island Dressing). Lettuce, cress, parsley, green

    & red peppers, shredded cabbage, kale, dandelion greens, tomatoes,

    asparagus... (any leafy vegetable).

    Dinner:

    Shrimp or lobster cocktail. Avocado or tomato stuffed with fish or fowl.

    Any soup, including cream soups, so long as no rice, barley or macaroni.

    Any stem or leafy vegetable - asparagus, brussels sprouts, cabbage,

    cauliflower, celery, collards, endive, kale, lettuce, mushrooms, parsley,

    peppers, sauerkraut, spinach, squash, tomatoes, turnip/beet greens.

    Cheese of any kind. *Sugarless* ice cream, sherbets or gelatins. Coffee

    or tea with cream. Milk.

    Dr. Howe emphasizes that this diet is for healthy people only. You

    don't have to stint, but don't go overboard either. Eat & drink enough

    for comfort and health, but no more. "If you're healthy, you won't

    anyway" says Dr. Howe.

    Dr. Howe stresses that if a person is under medical or psychiatric

    care, the diet is for his own personal physician and not Dr. Howe to

    prescribe.

    Dr. Howe's "Eat & Drink Up Diet" has been criticized by some as

    having something of a resemblance to one which has been published in

    California as "The Drinking Man's Diet", and this has been criticized as

    a diet which will leave you fat and drunk. Dr. Howe points out that the

    Drinking Man's Diet permits fruit and even seed vegetables. Dr. Howe

    rules these out as being too heavily loaded with fat making

    carbohydrates.

    <<CLOSED QUOTE - The Ottawa Journal, May 4, 1965>>

    Notes: Dr. Howe allows one to have a can of cream soup, or tomato

    soup, when desired, so long as they contain NO rice, pasta, potatoes, etc.

    There is some carbohydrate in these soups, but nowhere near enough to

    sabotage the diet.

    You may use unsugared strawberries in desserts.

    You may use sugar-free soda pop.

    Milk has 12 gms. of carbohydrate per glass - scientifically speaking.

    Almost none of these carbohydrate are usuable by the vast majority of

    humans as they are in the form of lactose, milk sugar, which very few

    people can metabolize well, if at all. Hence, drink up.

    Try not to use a lot of yogurt, or acidophilus milk, or any dairy

    product which has been treated with a bacteria which breaks lactose down

    into a "digestible" form. Yogurt is not off the menu, just don't eat more

    than a cup a day or so. Sour cream is not a problem, as it is made from

    full- fat cream and thus is low in lactose to begin with.

    Do NOT use "Calorie-wise" dressings, or anything labelled "light".

    Use full-fat dressings such as Ranch, Blue Cheese, Caesar, etc. Look on

    the bottle, if they have a carbohydrate count of 1 gm/serving. or less,

    use with abandon. If you do so, you will have fulfilled your oil

    requirement in the "You Must Eat" category.

    Whisky and hard liquor are allowed. Dry red or white wine may be

    taken with meals - be sure is has a sugar count of 3 or less (or says

    "dry" or "very dry" on the label.

    LASTLY: And MOST important. Do NOT mix apples and oranges so to

    speak. Do NOT take a part of this diet and a part of that diet. Low-

    carbohydrate diets are not as "forgiving" as low-calorie diets. Do THIS

    diet or DON'T do it. Don't mix and match, it is too confusing. If you

    follow this diet you will lose a pound a day or so, if you add a chocolate

    bar, a bran muffin, or a potato to the menu ALL THOSE FAT GRAMS become

    AVAILABLE to the body for metabolization. One slip can ruin your whole

    day. It isn't worth it: nothing tastes as good as thin feels.

    My Personal Story:

    In 1965 I was 17. I was 323 lbs. of misery. 6'1". I was so

    desperate to lose weight and "fit in" that I used to take the bus to the

    last stop on the line and try to walk the 10 or 15 miles back to my home.

    I was never able to make it. I had been told, without solicitation, that

    I should "turn the fat into muscle by exercise" by a wafer-thin cousin...

    On Saturday, May 1st, 1965 I read on the front page of the newspaper

    that "Dr. Howe's Diet" would be reprinted on Monday. When I read the diet

    it seemed to be doable. The first week I lost an impressive amount of

    weight (I don't remember exactly how much). By October I remember that I

    was down 100 pounds.

    It took about 5 or 6 months until I finally hit 190 lbs., largely

    because my social life had improved to the point where I was "out with the

    gang" instead of watching television. A teenager eats frenchfries,

    burgers and pizza when in company, even in 1965.

    31 years later I am still at 190 lbs. Once one has been overweight,

    it is a lifelong struggle, no matter WHICH diet one chooses. I have

    gained as much as 30 lbs. back before dieting. I have done Weight

    Watchers and bought the Susan Powter tapes. I did this largely because I

    was constantly told by thin friends (some of whom have since passed on)

    that a high-fat, low-carb diet was dangerous.

    I am the healthiest person I know.

    No diet is suitable for all people. If you think you'd like to try this

    diet, go to it!

    P.S.: As far as desserts go... try a Bavarian Cream using an

    envelope of sugar-free gelatine, made and removed from the refrigerator

    when partially set. Mix in a cup of cream which has been whipped

    separately and sweetened with Sweet & Low. Return to refrigerator until

    fully set. Each it all in one sitting if you like. Yum! Orange Jello

    Bavarian is my favourite.

    Or, how about baking an egg custard? Use artificial sweetener and

    chill. Cover with freshly whipped cream if liked. Use full-fat milk for

    the custard, I find cream too cloying.

    :cool: TJ :cool:

  8. I've seen some have increased total cholesterol numbers on

    low-carb diets. However, it's mostly because HDL (good)

    increases.. Not because of LDL (bad). Get your blood work

    numbers from your doc. I wanna see 'em.

    To be honest though, the triglyceride is a better indicator of

    heart disease.

    One, predominant, reason for this kind of action is reduced

    fiber in low-carb diets. You need to make sure you eat enough

    raw veggies and raw/unsalted nuts to keep fiber intake up.

    That's the only way we get rid of excess cholesterol (via

    bile acids..)

    Also, make sure you're getting plenty of antioxidant vitamins.

    This includes vit. C, E, and beta carotene. I usually take 2-3g

    of C daily..

    :cool: TJ :cool:

  9. Used two times a month, let's say for example, you think there could be long term effects?

    Probably not.. My guess is that you may get a little bit of

    gastro-intestinal distress the next day, though. Specially if you've

    been low-carb for a while. Generally these things work by

    inhibiting enzyme production..

    But hey, you could prolly get some wicked farts that way --

    if you've got someone you want to offend for fun :lol:

    :cool: TJ :cool:

  10. Do any of you have experience with any of the pills on the market to help block carb absorption? Say perhaps for Thanksgiving dinner or other binge inducing occasions? :?:

    To be honest, I would avoid these like the plague. They allow sugars

    to pass the entire length of the intestine without being properly handled

    by the correct enzymes. The net effect is that bacteria in the digestive

    tract have a large amount of substrate to feed on, etc.

    I think that those pills could lead to things like intestinal cancer, chrone's

    disease, IBS, etc. if used over any significant period of time.

    Just my $0.02

    :cool: TJ :cool:

  11. CATEGORY: diets/ketogenic

    TECHNICAL: ***

    SUMMARY:

    This document is part one of a lengthy technical document

    on Cyclical Ketogenic Diets (CKD's). It was written by a friend

    of mine who, at the time, was a member on

    another mailing list of people (mostly athletes) who used CKD's

    for fat-loss, or to increase muscle gain in the gym.

    This work is sort of like a treatise on the whole topic

    of CKD's. It discusses what ketones are, what ketosis is, and the

    effects that they have on your body. It's a fairly technical

    document but a good read none the less.

    If you read through it, you'll get an overall picture of

    how your hormones respond to low-carb diets, and why low-carb diets

    aid in fat loss. He's also very complete, and gives both positives

    and negatives (as he sees them).

    Bear in mind, though, that there have since been many

    new studies that prove the efficacy of ketogenic diets. I just

    wanted to show you this because it sort of lays it out in a fairly

    easy to understand manner. I don't exactly agree with everything

    he states here, but the jist is on target.

    -------------------------------------------------------------

    Surviving and Thriving on a Low Carb Diet

    Beyond Atkins, Di Pasquale and Duchaine

    by David Greenwalt B.Sc.

    There is currently a great debate over which diet is best with

    special emphasis on high fat/low carb or high carb/low fat. Each group

    makes "spot" claims and neither really covers the issues which really

    matter. What are these issues?

    1. What is your goal? A. Fat loss? B. Muscle hypertrophy? C. Endurance

    improvements? D. Longevity?

    2. What foods do you like? A. Are you a vegetarian? B. Do you rarely eat

    fresh fruits and vegetables? C. Do you like fish? D. Do you like to cook?

    E. Are you married or single and does your spouse like to cook?

    3. Do you plan on staying on this diet forever?

    4. Are you going to use the diet temporarily for any number of reasons?

    Many of the arguments which begin between rigid dieting rivals are

    ghost-like, in that neither side knows, or cares, what the goals are of

    the other. I, speaking personally, do not know a very large, muscular

    vegetarian. An argument can be made that vegetarianism is healthiest,

    however, from purely an observational perspective, I don't want to look

    like any vegetarian I know or have ever seen. My goals, as a bodybuilder,

    are to be as big and lean as I can be genetically and naturally. At this

    point, a vegetarian and I are most likely polar opposites.

    We must define our goals if we are to intelligently discuss diets

    because simply talking about calories in, calories out or arguing over

    diets which are supported in scientific literature as health-giving versus

    diets purported to be more anabolic is assanine. It's almost like saying

    "I like apples. Well, I like Ferrari automobiles." One has little to do

    with the other.

    There are so many diets for sale it can be bewildering to most

    people. While all of these diets cause dietitians to shake their heads in

    most cases, the personal bioindividuality isn't taken into consideration.

    Take a recent example in which a relative of mine was counseled on a

    weight problem by a physician (M.D.). My relative was told to eat low fat,

    high carb, fruits and veges and eat fish at least twice a week because of

    the benefits of the essential fatty acids in the fish. This advice is

    patented medical standard protocol for anyone overweight and might be very

    good for a majority of the population. Problem: My relative hates fish and

    so do I for that matter. It is because of our individual likes and

    dislikes that so many diets are made available. Most are effective in

    their own right but many are imbalanced and do not include a wide variety

    of foods. The Registered Dietitians (RD) of America push the Food Guide

    Pyramid. The Atkins followers push the low carbohydrate diet. Others push

    high protein or low protein, fasting, grapefruit only, soup only, no

    fruits, etc. etc.. All may serve a purpose and all may be valid but until

    we know about goals and individual sensitivities like intolerance to

    certain foods, allergies, medical conditions and personal likes and

    dislikes, there can be no intelligent discussion about which diet is

    better.

    This paper is an attempt to clear up the disinformation which exists

    regarding the low carbohydrate diet which causes ketonuria and ketonemia.

    Whether we're talking about an Atkins (low carb everyday) or Di Pasquale

    (low carb 5 1/2 days, med. carb 1 1/2 days) they both cause considerable

    ketosis.

    There are those who follow a low carb diet and have done so for more

    than a year. Atkins' book gives several examples of individuals who have

    chosen to make low carb a part of their life style (5). A certain, small

    percentage of epileptic children who suffer from intractable seizures and

    don't respond well to drug therapy are purposely placed and medically

    supervised on a low carb (herein called Ketogenic Diet) for periods of two

    years or more (1). A key difference between an epileptic child and a

    healthy bodybuilder consuming similar foods is fluid intake. A ketogenic

    diet is closely monitored for an epileptic child because water intake is

    restricted. This is because the ketone bodies, which are synthesized in

    high quantities on a ketogenic diet, are actually the medicine for the

    child. Epileptic children wouldn't respond as well if the "medicine" was

    being flushed down the toilet in large quantities as the kidneys filtered

    them with super consumption of water.

    A non-epileptic, otherwise healthy adult does not have the same goal

    as the epileptic child. Ketones are not medicine. They are an energy

    source but not medicine to the healthy bodybuilder. They are a byproduct

    of the diet which we want to excrete if in excess (We'll cover some

    biochemistry later).

    There are those who believe that the world nearly stops when benign

    dietary ketosis is caused with a ketogenic diet. Scare tactics such as

    "The Kreb's cycle collapses due to insufficient carbohydrate intake",

    there will be more "bruising" of blood vessels because of higher fat

    traffic on a ketogenic diet, increased risks of morbid obesity and

    increased coronary heart disease lipid factors, and finally the great myth

    that we must have hundreds of grams of carbohydrates per day to fuel the

    brain and other tissues which require glucose for energy. Some of these

    claims are simply false and others are completely unsubstantiated in

    current medical journals. What must be taken into consideration, before

    wild claims are made, are the ratios of the nutrients consumed and making

    sure that whether it's an epidemiological study or small 10 person study,

    were the study participants consuming a diet which is the same as those

    following a typical ketogenic diet consisting of 70% fat, 20% protein and

    5% carbohydrate? In nearly any case which examines fat intake and

    increased risks of CHD and obesity, the fat intake is coupled, arm-in-arm

    with high dietary carbohydrate ingestion or at least substantially higher

    than the ketogenic 5% we're discussing in this paper.

    The scare tactics, like the ones above, are used by the ill-advised

    and ignorant who feel their diet is best. There is no cookie cutter

    "best". There is no "one size fits all." For these reasons we can only

    discuss physiology, biochemistry and scientific literature reviews which

    are pertinent to humans following identical diets. Rat studies may be

    better than nothing but not much better. In-vitro studies are only a place

    for scientists to start, not a place for pragmatists to review.

    In this paper I'll cover how a ketogenic diet works to support life

    and activity and I'll also discuss how a ketogenic diet may even be

    beneficial for some individuals. The research I have conducted for this

    paper has led me to recommend a ketogenic diet for the following

    individuals under the following circumstances:

    1). Medically supervised epileptic children who don't respond to standard

    drug therapy;

    2). Dieting bodybuilders in precontest dieting phases, up to 12 weeks in

    duration;

    3). Strength phase athletes who want to incorporate more meat without a

    large weight increase or any weight increase;

    4). Type II diabetics (non-insulin dependent) 6-12 weeks, with

    carbohydrates brought back in slowly and in measured quantities;

    5). Anyone, who is otherwise healthy, but overweight and not happy with

    the mirror may want to consider giving this diet a try for 6-12 weeks then

    bring back in carbohydrates slowly and in reduced/measured quantities.

    Yes, every class is temporary and it is believed, by this writer,

    that a low carbohydrate, non-ketogenic diet would be the goal, eventually,

    for anyone following a current ketogenic diet because ketosis is not a

    normal, everyday, physiological state and was not intended to be from a

    physiology standpoint. With all of this said let's begin.

    What is a ketogenic diet and why would anyone want to modify their

    current eating regimen to adapt to and follow a ketogenic diet?

    First, let me say that the ketogenic diet dates back to biblical

    times and in more modern times of the 20th century, the ketogenic diet has

    been studied extensively with more research warranted even so (1).

    The word ketogenic reveals the basic identity of the metabolic

    process in humans of ketone (keto) production (genic). So we've produced

    ketones. What does this mean and how are ketones used as ready substrates

    to fuel anabolic and catabolic reactions, or better stated, how are

    ketones used to fuel metabolism?

    Ketones are a byproduct of fatty acid catabolism and this process of

    breaking down triglycerides into glycerol and fatty acids is known as

    lipolysis. Lipolysis is a normal physiological event occurring at times

    when the body is utilizing fat as a fuel source and thus, breaking down

    stored triglycerides and mobilizing free fatty acids and glycerol for

    further catabolism into our body's absolute source of energy, ATP.

    Lipolysis is activated during normal calorie-restrictive dieting

    conditions and partially explains the reason we lose body fat during

    hypocaloric periods or when we've created a net calorie deficiency when

    activity, such as exercise, coupled with our basal metabolic rate creates

    a greater need for calories than we are providing through our diet.

    Ketone production is an indicator that lipolysis has been activated

    and you are now, at least partially, burning fats for fuel. A ketogenic

    diet, as you might expect, is a diet which promotes lipolysis as a chief

    energy source, in preference to dietary glucose, the principal

    carbohydrate utilized by the body after breaking down polysaccharides into

    the monosaccharide glucose.

    If lipolysis is the goal of a ketogenic diet for otherwise healthy

    individuals, what is the best way to accomplish this? To give ourselves a

    reference point and provide the baseline for comparison, I present the

    highly touted pyramid of healthy eating.

    The food guide pyramid, as many of you have seen, is representative

    of what mainstream dietetics in 1996 want the majority of the American

    population to consume on a daily basis for health, vigor and longevity.

    The base and foundation of the pyramid suggests 6-11 servings of bread,

    cereal, rice and pasta with the following other food groups and servings

    providing the remaining calories in a given day: vegetables 3-5 servings,

    fruits 2-4 servings, milk, yogurt and cheese 2-3 servings, meat, poultry,

    fish, dry beans, eggs and nuts 2-3 servings, and last but not least fats,

    oils and sweets are to be used sparingly. Upon visual observation of the

    actual pyramid represented you can see the food groups are arranged with

    the foods which should be consumed in greater quantities at the bottom,

    and which are representative of a strong, solid foundation on which to

    build (2).

    When you are eating a ketogenic diet we turn everything upside down,

    except that turning the pyramid upside down only provides an unstable

    pivot point which the pyramid couldn't possibly be supported by. What we

    really must do to represent the ketogenic diet appropriately is move the

    food groups and provide for a solid base, consisting of fats and oils as

    the foundation to build upon.

    With a ketogenic diet, fats and oils are indeed representative of the

    greatest proportion of the macronutrient organic molecules; lipids,

    proteins, carbohydrates and nucleic acids eaten on a daily basis.

    There's a good chance, as you sit there right now that you're in a

    serious state of denial and many walls have already been put up doubting

    the efficacy of this diet. I mean, after all, isn't it fat that makes us

    fat? How could we possibly even maintain our current weight, let alone

    lose weight with a diet which works off a structure of fats first, protein

    second and carbohydrates third? Fat has been portrayed as an evil villain.

    I mean, remember the traditional pyramid? Fats and oils are to be used

    sparingly! Fat-free this and fat-free that. It's all good. It's all O.K.

    if it's fat-free. Not true and even potentially dangerous for some people

    who don't metabolize sugars properly.

    In spite of the plethora of enzymes and metabolites in each cell,

    metabolism is not random. Rather, it is highly regulated. If each of the

    possible metabolic reactions were to occur at a fixed rate all of the

    time, organisms would be incapable of reacting to changes in their

    environment. For example, the intake of energy may be sporadic (e.g.

    meals), yet organisms expend energy continuously. Metabolism must

    therefore be regulated so that an organism can respond efficiently to the

    availability of energy or food. When there is no intake of food but a

    continued need for energy expenditure, metabolic fuels are mobilized from

    storage depots at a rate sufficient to supply cells with oxidizable

    substrates. Humans, for example, can survive periods of starvation as long

    as five to six weeks when provided with water. A very obese adult could

    probably endure a fast of more than a year, but physiological damage and

    even death could result from the accompanying extreme ketosis after this

    amount of time (7) (Remember, we're not starving, we're eating everyday).

    Keep in mind that any organism responds not only to external demands but

    also to genetically programmed instructions. The responses of organisms to

    changing demands may involve alterations in many pathways or only a few

    and may occur on a time scale ranging from less than a second to hours or

    longer. Briefly, and very simplified, this is what occurs when a normal,

    otherwise healthy person eats a typical meal consisting of 55%

    carbohydrates, 30% fats, 15% protein- in other words, the "ideal diet".

    Lipids are catabolized into fatty acids, carbohydrates to monosaccharides

    and proteins are broken down into amino acids. Absorption of

    macromolecules is primarily achieved in the small intestine and the

    macromolecules are used to fuel glycolysis, the kreb's cycle and the

    electron transport system, with carbohydrates being burned preferentially

    to fats and proteins as an energy source. As long as glucose is plentiful

    and insulin is present, glucose fuels the human machine and fats are

    burned primarily as a fuel source only when carbohydrates are insufficient

    or the body perceives an insufficiency, as is the case in diabetes

    mellitus.

    A ketogenic diet has been compared to a fasting/starvation diet

    because in many ways, the metabolic pathways responsible for energy

    production are similar in both. There is one striking difference which

    should be very obvious, however, between a fasting/starvation diet and the

    diet presented here. FOOD! We are neither fasting nor starving with a

    ketogenic diet and in fact we are consuming, in some degree, all three of

    the major energy-producing organic macromolecules which are, once again,

    lipids, proteins and carbohydrates. To better illustrate how the body

    could possibly survive and even thrive on such a diet it should be

    understood that individuals who may benefit the greatest from a diet of

    this type are individuals who don't process sugars properly, as is the

    case in Type II, Noninsulin dependent, Adult-Onset Diabetes, and

    individuals who are at greater risk for coronary heart disease due to

    complications associated with morbid obesity.

    Briefly, Noninsulin dependent diabetes is usually associated with

    obesity and insulin secretion may be normal. Circulating levels of insulin

    may even be elevated, thus the problem is not a shortage of insulin, but

    insulin resistance resulting from decreased sensitivity, poor

    responsiveness, or both. Chronic hyperglycemia (high blood sugar) is the

    result. A drop in insulin production is often observed in individuals as

    time passes and currently there is strong evidence to support a tiring of

    the pancreas from chronic insulin output. A drop in insulin production is

    often observed in individuals with NIDDM as time passes. NIDDM affects

    about 5% of the population or approximately 12,500,000 people nationwide.

    Chronic hyperglycemia can lead to a number of complications including

    cataracts, sclerotic lesions in blood vessel walls, and general ill health

    associated with obesity The aim of all regimens for the management of

    diabetes is control of blood glucose levels. Dietary modifications are

    often sufficient to control NIDDM and this type of diabetes may even

    disappear with moderate weight loss and a program of exercise (3).

    If obesity begets NIDDM and NIDDM begets obesity then we can begin to

    realize the seriousness which surrounds a diet which may help control

    blood glucose levels and which promotes the dissolving of fat. The health

    risks of overfatness are so many that it has been declared a disease:

    obesity. Besides diabetes and hypertension, other risks threaten obese

    adults. Among them are high blood lipids, cardiovascular disease, sleep

    apnea, osteoarthritis, abdominal hernias, some cancers, varicose veins,

    gout, gallbladder disease, respiratory problems, liver malfunction,

    complications in pregnancy and surgery, flat feet and even a high accident

    rate. Moreover, after the effects of diagnosed diseases are taken into

    account, the risk of death from other causes remains twice as high for

    people with lifelong obesity as for others. An estimated 25 percent of

    U.S. adults are overweight to a degree that incurs such risks (2).

    As I stated before, a ketogenic diet is compared to a fasting diet

    because of similar metabolic reactions for utilizing fatty acids and

    protein as principle energy substrates when glucose levels are low. So, in

    very simplified form, this is what happens when we change from a typical

    "fed state" in which carbohydrates are plentiful and the fasting or

    ketogenic state in which carbohydrates are restricted.

    In the absorptive phase, lasting from 2-4 hours after a meal, the

    level of glucose in the blood rises. Glucose is rapidly taken up by the

    liver, skeletal muscle and the brain. If the level of glucose in the blood

    rises above the ability of the kidney to reabsorb filtered glucose, the

    excess is lost to the urine, as is the case with hyperglycemia and

    diabetes.

    High blood glucose triggers the release of insulin, which has many

    physiological effects including stimulation of glycolysis (utilization of

    glucose to form 2 ATP and 2 pyruvic acid molecules), fatty acid synthesis

    and protein synthesis as well as inhibition of glycogenolysis (breaking

    down glycogen to glucose), gluconeogenesis (conversion of noncarbohydrate

    sources to glucose), fatty acid oxidation (cleaving long chain fatty acids

    2 carbons at a time into shorter fatty acids), ketogenesis (producing

    ketones) and proteolysis (breaking down proteins). Glucagon, which acts

    only on liver, has effects that are in general, opposite those of insulin.

    Insulin levels are high in the fed state (a state generally associated

    with food consumption containing carbohydrates); glucagon levels are high

    in the fasted state (or states in which glucose levels are low such as the

    ketogenic diet).

    Lipids entering the body during the absorptive phase are packaged in

    chylomicrons (a transporter for lipids). Triglycerides in chylomicrons are

    delivered to peripheral tissues (peripheral tissues are defined as any

    tissue which is not the liver, indicating the liver's central role in

    metabolism and filtration of toxins). Triglycerides are hydrolyzed outside

    the cell and fatty acids are taken up, esterified (relinked with glycerol)

    and stored (3). Stored lipid represents the body's most plentiful source

    of potential energy. Relative to other nutrients, the quantity of lipid

    available for energy is almost unlimited. The actual lipid fuel reserves

    in a typical young adult male amount to about 90,000 to 110,000 kcal

    (23,800kJ) of energy. In contrast, the carbohydrate energy reserve is

    about 2% of this total, or approximately 2000 kcal (8400kJ) (6).

    Dietary amino acids arrive at the liver during the absorptive phase.

    These amino acids are either catabolized, used for protein synthesis or

    permitted to pass unaltered to peripheral tissues. Oxidation of the amino

    acids in liver generates a large amount of ATP, much of which is

    immediately consumed by the pathways of gluconeogenesis and urea

    synthesis, which remove the carbon and ammonia, respectively, generated by

    amino acid catabolism.

    In the transition into early starvation or initial ketogenic dieting,

    the absorption of dietary glucose slows, the levels of insulin drops and

    the level of glucagon rises. The liver responds to the hormonal changes by

    breaking down glycogen and releasing glucose. Low levels of insulin are

    also accompanied by an increase in the rate of lipolysis in adipose tissue

    and an increase in the release of free fatty acids into circulation.

    In addition to gluconeogenesis there is another revelation that may

    come as a shock to some of you. When choice is available, most tissues use

    fatty acids as fuels before ketone bodies, and BOTH BEFORE GLUCOSE (3).

    This means that glucose is used only when it is abundant and other fuels

    are scarce. Fatty acids are used in preference to glucose even though the

    concentration of circulating glucose is always much higher than the

    concentration of free fatty acids. The glucose-fatty acid cycle, first

    proposed by Philip Randle, explains how the preference for glucose or

    fatty acids is determined by metabolic conditions. Operation of the

    glucose-fatty acid cycle requires that low concentrations of glucose

    correspond to greater fatty acid availability. As I've stated earlier, low

    availability of glucose results in decreased levels of insulin. Less

    insulin means that lipolysis inhibition in adipose tissue has been lifted

    and the availability of free fatty acids rises. The glucose-fatty acid

    cycle contributes to the maintenance of blood glucose levels by sparing

    the oxidation of glucose in peripheral tissues. This pattern of fuel use

    is usually observed only when the availability of glucose is low, such as

    after liver glycogen stores are exhausted, but the cycle predicts that any

    rise in the level of circulating fatty acids will decrease glucose use.

    The glucose-fatty acid mechanism suppresses the use of glucose when fatty

    acids are available; when glucose is low, insulin is low, release and

    catabolism of fatty acids is high, and products of fatty acid catabolism

    (NADH, acetyl CoA and citrate) inhibit glucose degradation and spare the

    use of glucose.

    Other cycles of metabolism which assist in sparing glucose when

    glucose levels are low include the Cori cycle which regenerates ATP from

    lactate produced in muscle tissue. The lactate generated is returned to

    liver for conversion back to glucose. The glucose-alanine cycle

    interconverts glucose to alanine in muscle and then back to glucose once

    again in liver.

    Amino acids are the major gluconeogenic precursors initially and one

    key difference between starvation or fasting and an eucaloric ketogenic

    diet is that during starvation the use of endogenous amino acids requires

    degradation of body proteins and accompanying loss of protein function.

    With a ketogenic diet copious amounts of dietary proteins are being

    consumed everyday. As you will see, the body strives to maintain protein

    homeostasis and particularly, the precious intracellular proteins. When

    given the choice, it is the belief of this writer that the body will

    utilize dietary proteins during this initial gluconeogenic activity,

    although some body proteins may initially be sacrificed through the

    actions of various hormones until adaptation has occurred.

    Protein turnover is continuous and the two processes comprising

    turnover, synthesis and degradation, approximately balance one another in

    the healthy adult. Whole-body turnover in humans is correlated to ones'

    metabolic mass. Daily turnover of protein is calculated to be

    approximately 4.6g/kg body weight. For the average 70-kg male, turnover of

    whole-body protein would approximate 320 g daily (7). Individual body

    proteins, however, vary in their turnover rate; the half-life of a protein

    can range from only a few minutes to several months. Furthermore, neither

    the turnover rate of an individual protein nor that of total body protein

    remains constant. The rate of synthesis and degradation can be influenced

    by a variety of factors related to nutrition, including immediate food

    intake, previous diet, and overall nutrition status. Some have postulated

    that during a ketogenic diet we will continuously show accelerated

    proteolysis of intracellular proteins and muscle for gluconeogenesis which

    is the opposite of what any athletic individual wants to do. During the

    initial stages of a ketogenic diet the catabolism of muscle tissue may

    occur for a brief period until the body has adapted to the diet and the

    use of fatty acids and ketones as primary fuel substrates. Protein

    degradation rates decrease concurrently so that even in chronic

    starvation, which the low carb diet is not, daily losses of nitrogen

    become quite small. For example, a person fully adapted to starvation can

    survive at a cost of 3 to 4 g of his or her body protein per day. This new

    priority is justified by the vital physiological importance of body

    proteins. Proteins that must obviously be conserved for life to continue

    include antibodies, needed to fight infection, enzymes, which catalyze

    life-sustaining reactions and hemoglobin for the transport of oxygen to

    tissues. The protein sparing shift at this point is from gluconeogenesis

    to lipolysis, as the fat stores, and if following a ketogenic diet,

    dietary fats, become the major supplier of energy. This shift to fat

    breakdown also releases a large amount of glycerol, which becomes the

    major gluconeogenic precursor, rather than amino acids (7). The principal

    mechanism of adjustment to starvation is a change in hormone balance.

    Decreased insulin activity, coupled with increased synthesis of

    counterregulatory hormones such as glucagon, epinephrine and

    norepinephrine promotes fatty acid mobilization from adipose tissue,

    production of ketones and the availability of amino acids for

    gluconeogenesis. Initially, in starvation or fasting and possibly

    preadjustment to a ketogenic diet, glucocorticoids are important in

    gluconeogenesis because they promote catabolism of muscle protein to

    provide substrates for gluconeogenesis. We must remember that proteolysis

    of muscle tissue may occur on a ketogenic diet in the early preadjustment

    stages, however, ketogenic dieters are not starving and the initial

    increased catabolism of body proteins will not continue for longer than as

    little as a few days or perhaps up to a few weeks. Ketogenic dieters are

    still consuming lipids, proteins and carbohydrates on a daily basis and

    are not starving. An increased adjustment to starvation (or a ketogenic

    diet) is characterized by a decrease in the secretion of glucocorticoids,

    however (7). As fasting or starvation (or a ketogenic diet) continues,

    tissues continue to use fatty acids and glucose for energy, but also begin

    to use ketones formed in the liver from fatty acid oxidation. A decrease

    in protein catabolism and gluconeogenesis occurs concurrently with the

    brain's and other tissues' adaptation to ketones as a source of energy.

    Glutamine metabolism in the kidney increases as starvation continues and

    acidosis occurs. Within the kidney, glutamine catabolism generates

    ammonia, which serves to help correct the potential for acidosis (7). Once

    again, a difference between the ketogenic diet and starvation is acidosis.

    Acidosis is well regulated in individuals who are not starving and even in

    those who are, however, a discussion of protein and amino acid turnover

    should include renal glutamine metabolism which is also a regulator of

    blood pH.

    As carbohydrates continue to remain low and the body is forced to use

    fatty acids, proteins and glycerol via gluconeogenesis for fuels, fatty

    acids are converted to ketone bodies, which, unlike fatty acids, can cross

    the blood-brain barrier and serve as fuel for the brain, further sparing

    the use of glucose. Less use of glucose at this state means less

    What we've clearly shown thus far, is that the body is adaptive and

    utilizes many complex mechanisms to not only spare glucose for organs

    which absolutely require it like the kidney medulla, the retina, red blood

    cells and parts of the brain, but also regenerates necessary glucose from

    non carbohydrate sources.

    If further evidence is necessary to convince any doubters that a low

    carbohydrate diet can not only sustain life but provide a great abundance

    of energy for daily activities, exercise and even intense exercise, I'll

    provide the following scenario:

    In humans, in the fed state (which as I mentioned before is generally

    associated with carbohydrate ingestion), the brain requires about 120

    grams of glucose per day and all other glycolytic tissues require about 60

    grams per day. Total glucose necessary per day during intermediate

    starvation is reduced to approximately 110-120 grams per day (3). The

    body, at this stage, is already making adjustments for reduced

    carbohydrate availability. As ketone bodies become more readily available,

    they can substitute as an energy source in tissues which would normally

    otherwise utilize glucose as a fuel source. What tissues can utilize

    ketone bodies for energy?

    (1) The brain (2) Muscle (3) The Kidneys (4) Small intestine

    The sparing effect of ketone bodies on glucose when a eucaloric diet

    is still being utilized, ensures that peripheral tissues will have the

    glucose they need to function efficiently. During intermediate starvation

    and potentially, during initial ketogenic dieting, about 40-50 grams of

    the 110-120 grams of glucose used per day are accounted for by the

    activity of the Cori cycle (if you'll think back, the Cori cycle was a

    cycle of glucose regeneration from glucose to lactate in muscle and then

    back to glucose again in the liver). In starvation, lipolysis of adipose

    tissue will contribute between 15 and 20 grams of glucose per day and

    remains fairly constant during starvation. We can conclude that lipolysis

    of adipose tissue as well as fatty acid oxidation of dietary lipids with a

    ketogenic diet will produce glucose in at least as great a concentration

    as starvation.

    So far we've created approximately 70 grams of glucose via the Cori

    cycle and lipolysis with another 40-50 grams of glucose needed to fill the

    bank and provide peripheral tissues with glucose to operate effectively.

    How do we get the remaining glucose we absolutely must have during

    intermediate starvation or preadjustment ketogenic dieting?

    Gluconeogenesis from amino acids is quite high, even in the absorptive

    phase when carbohydrates are present. During starvation, proteolysis of

    peripheral tissues increases to provide gluconeogenic precursors at the

    liver. During the ketogenic diet protein is consumed in copious amounts,

    thus thwarting the debilitating effects of losing precious cellular

    proteins and muscle protein. The production of 100 grams of glucose

    requires the breakdown of about 175 grams of amino acids. During

    starvation this cannot last long as even a small amount of lost protein to

    provide energy is accompanied by loss of functional capacity (3). Once

    again, we're not starving, we're eating generous portions of lipids,

    proteins and minimal carbohydrates. A typical 180 pound bodybuilder, for

    instance, will consume approximately 180-360 grams of protein per day

    depending on training philosophy and ideas about the benefits in general

    of consuming additional protein as a bodybuilder. There is even stronger

    evidence to suggest that endurance athletes may benefit from increased

    protein consumption (even more so than bodybuilders) and they may in fact

    be consuming large amounts of protein from their diet as well. I cannot

    speak for them, however (4).

    We've already exceeded the minimal necessary amounts of glucose to

    keep peripheral tissues functioning efficiently and we haven't even eaten

    any carbohydrates yet. Let's not forget that most ketogenic diets don't

    advocate abstinence from carbohydrates completely and that most

    bodybuilders or dieting individuals following a ketogenic diet will

    consume between 30 and 50 grams of carbohydrates per day. We've already

    shown that glucose will be plentiful and available to fuel tissues which

    require it but let's review thus far how it was accomplished. (1) A

    reduction in carbohydrate intake has reduced insulin production, although

    insulin in normal, healthy individuals is present at all times in blood,

    albeit, in lower concentrations during low carbohydrate ingestion. (2) A

    lowering of insulin has lifted the inhibition on lipolysis and lipolysis

    is now stimulated. If calories are insufficient to maintain BMR plus

    activity then adipose tissue and dietary fatty acids will effectively be

    used to generate energy via the beta oxidation of free fatty acids and

    gluconeogenesis of glycerol, the back bone of stored triglycerides. In

    either case, hypocaloric or eucaloric dieting, lipolysis will be enhanced

    and the choice of fuels will be determined by calories consumed with

    preference given to dietary lipids first and adipose tissue second. (3)

    The glucose-fatty acid cycle dictates that when carbohydrate is low, fatty

    acids can serve as a preferred fuel source, thus, lowering the need for

    glucose. (4) The Cori cycle recycles glucose by converting glucose into

    lactate within muscle and then a reconversion of lactate in the liver back

    to glucose takes place, thus completing the cycle. (5) The glucose-Alanine

    cycle is similar to the Cori cycle except that glucose is converted into

    pyruvate within muscle once again and then to Alanine, also within muscle,

    which is transported to the liver for reconversion into glucose. (6) The

    body has adapted to the reduction in glucose and is ready and willing to

    utilize ketone bodies as a fuel source in certain tissues. (7) We are

    still eating some carbohydrates every day!

    As starvation or the ketogenic diet continues, lipolysis continues to

    release considerable amounts of fatty acids, which are taken up by the

    liver. Fatty acids enter the mitochondria, where they are partially

    oxidized. The citric acid cycle in liver can absorb only a fraction of the

    acetyl CoA produced by beta oxidation, and most is converted to the ketone

    bodies beta-hydroxybutyrate and acetoacetate. Ketone bodies that are taken

    up and metabolized by tissues spare the use of glucose, just as glucose is

    spared by the operation of the glucose-fatty acid cycle.

    As ketone bodies initially become available, they provide up to 50%

    of the energy requirement of skeletal muscle. The most important overall

    effect, however, of the use of fatty acids and ketone bodies as

    alternatives to glucose, is that, as I stated in previous pages, less

    demand for glucose means that less proteolysis of muscle protein is

    required to supply the gluconeogenic pathway. Ketone bodies are acidic,

    water soluble short chain fats and if left to accumulate in an

    uncontrolled fashion could have devastating effects on our central nervous

    system. Excess ketones are filtered and diluted ( as they are water

    soluble) and excreted in urine. Our body also has very capable buffering

    systems in place, (one previously mentioned is the use of renal glutamine

    metabolism to create ammonia) to accept the extra hydrogen ions released

    in the blood which prevent wild fluctuations in blood pH.

    An excellent example of buffer capacity is found in the blood plasma

    of mammals, which has a remarkable constant pH of 7.4. Consider the

    results of an experiment that compares the addition of an aliquot of

    strong acid to a volume of blood plasma with a similar addition of either

    physiological saline or water. When 1.0ml of 10 M HCL (hydrochloric acid)

    is added to 1000ml of physiological saline or water that is initially at

    pH 7.0, the pH is lowered to 2.0. However, when 1.0 ml of 10 M HCL is

    added to 1000 ml of blood plasma at pH 7.4, the pH is again lowered, but

    only to 7.2- impressive evidence for the effectiveness of physiological

    buffering (3).

    The pH of the blood is primarily regulated by the carbon

    dioxide(CO2)-carbonic acid(H2CO3)-bicarbonate(HCO3) buffer system. The

    buffer capacity of blood depends upon equilibria between gaseous carbon

    dioxide(which is present in the air spaces of the lungs), aqueous carbon

    dioxide(which is produced by respiring tissues and dissolved in blood),

    carbonic acid, and bicarbonate. When the pH of blood falls due to a

    metabolic process that produces excess hydrogen ions, the concentration of

    carbonic acid increases momentarily, but carbonic acid rapidly loses water

    to form dissolved carbon dioxide(aqueous), which enters the gaseous phase

    in the lungs and is expired as carbon dioxide (gaseous). An increase in

    the partial pressure of carbon dioxide in the air expired from the lungs

    thus compensates for the increased hydrogen ions. This system of pH

    regulation effectively neutralizes the excess hydrogen ions, however, it

    does so at the cost of depleting the blood bicarbonate. A bicarbonate

    repletion mechanism exists in the kidney and requires the amino acid

    glutamine (3). Conversely, if the pH of the blood rises, the concentration

    of bicarbonate increases transiently, but the pH is rapidly restored as

    the breathing rate changes and the reservoir of carbon dioxide(gaseous) in

    the lungs is converted to carbon dioxide (aqueous) and then to carbonic

    acid in the capillaries of the lungs. Again, the equilibrium of the blood

    buffer system is rapidly restored by changing the partial pressure of

    carbon dioxide in the lungs (3).

    One point which must be addressed when discussing the effects of

    buffering systems and the acidic nature of ketone bodies is the

    incorrectly assumed potential for ketoacidosis in individuals who still

    have the ability to secrete normal amounts of insulin from the pancreas.

    In diabetics, who are vivid negative examples of what can go wrong with

    the integration of metabolism and metabolic regulation (homeostasis) for

    the continuance of life, ketoacidosis and metabolic acidosis are very real

    and serious problems which must be taken into consideration by those

    individuals. In diabetics, who are already at risk for chronic

    hyperglycemia, diuresis leads to a dehydration compounded by increased

    insensible water loss due to hypernea of metabolic acidosis. Metabolic

    acidosis results from the excessive ketogenesis occurring in the liver.

    Peripheral circulatory failure, a consequence of severe hemoconcentration

    leads to tissue hypoxia with a consequent shift of the tissues to

    anaerobic metabolism. Anaerobic metabolism raises the concentration of

    lactic acid in the blood, thereby worsening the metabolic acidosis. The

    ketonuria along with glucosuria associated with acidosis causes an

    excessive loss of sodium from the body; loss of this extracellular cation

    further compromises body water balance. A net loss of potassium, the chief

    intracellular cation, accompanies increased protein catabolism and

    cellular dehydration, both of which characterize uncontrolled diabetes

    (7).

    In non-insulin dependent diabetics or the overweight but healthy

    individuals who are utilizing a ketogenic diet this cascade of events,

    which eventually may lead to coma or death, does not occur. If it did,

    we'd have a lot of very sick or dead dieters to deal with and in all

    actuality we wouldn't be writing this paper because the diet would not be

    as "trendy" as it has become. Why then, don't type II diabetics or normal

    but overweight individuals succumb to the hazards of ketoacidosis or

    metabolic acidosis? The answer lies in the body's innate ability to

    maintain homeostasis. With a ketogenic diet we are mobilizing large

    amounts of free fatty acids which are producing ketone bodies in large

    quantities. Ketone bodies are acidic. If we agree thus far in this

    paragraph then let's elucidate the reason we aren't all dropping like

    flies. When plasma ketone concentrations reach 4-6mmol, insulin release

    from the pancreas is stimulated. This blunts (but does not normalize)

    lipolytic activity in the fat cell such that plasma free fatty acid (FFA)

    levels are fixed at about .7-1.0mmol - sufficient to allow moderate

    production of aceto-acetate and 3-hydroxybutyrate by the liver, but

    insufficient to allow maximum rates of production required to develop

    ketoacidosis. In type I diabetics subjects the protective ketone-insulin

    feedback loop cannot operate because of beta-cell failure in the Islets of

    Langerhans. As a consequence, plasma FFA reach much higher concentrations,

    driving ketone production to maximal rates, thereby leading to the

    ketoacidotic state (8). Another, perhaps more obvious advantage, is our

    ability as human beings to utilize common sense. Since the kidneys are

    going to help us flush unused ketones then we can help our kidneys do

    their job by drinking a lot of distilled water everyday. At least one

    gallon of distilled water should be consumed everyday when individuals are

    following a ketogenic diet or any diet for that matter.

    I've spent a lot of time covering the basic metabolic pathways

    associated with a ketogenic diet consisting of 75% lipids, 20% proteins

    and 5% or less carbohydrate. There are those who profess to have all the

    answers and shriek at a diet which promotes such a high fat consumption

    and, in the beginning, nearly excludes certain food groups. There are

    great differences between this type of diet and someone who is ill with

    Insulin Dependent Diabetes Mellitus. A normal person produces insulin but

    may not regulate blood glucose levels and uptake very efficiently due to

    many factors. An Insulin Dependent Diabetic does not produce insulin, or

    very much, and has lost much of the control that healthy, but overweight

    individuals possess.

    You may be curious about exactly what foods are acceptable for this

    diet. In general: All meat, all fish, all fowl, all shellfish, all eggs,

    almost all cheeses, vegetables of 10% carbohydrate or less, cauliflower,

    tomatoes, spinach, sauerkraut, broccoli, brussels sprouts, spices, sugar

    free beverages, fats and oils, nuts and seeds in moderation, peanut butter

    in moderation and water as the principle dietary solvent (5).

    Final recommendations and general guidelines for anyone following a

    ketogenic diet: Generally speaking, when individuals are strictly

    following the initial dieting changes which accompany this diet they are

    lacking in various vitamins, minerals and fiber. While there is great

    controversy over whether fiber is of vital importance for life-long health

    and cancer prevention, this writer believes fiber should be sought and not

    avoided. Because I have made initial recommendations that anyone following

    this diet will not be on it in its strict form for more than 12 weeks

    there are some simple ideas which I think are important; (1) Drink at

    least one gallon of distilled water every day, (2) While carbohydrate

    intake will most likely be limited to 30-50 grams per day it is important

    to make the carbohydrates you do eat of a fibrous nature. Vegetables which

    are high in fiber and nuts can help balance the carbohydrate/fiber issue.

    They are also a rich source of vitamins and minerals. I suggest not eating

    any carbohydrate that contains greater than a 3:1 ratio of carbs to fiber

    grams. In other words, if the package of nuts you're eating has 6 grams of

    carbs, it should also contain 2 grams of fiber or more. Assuming the eggs

    and other products you're going to be eating that contain trace amounts of

    carbs equals no more than 6 grams of carbs per day, you will have between

    24 and 44 grams of carbs left to consume. In these carbs you should strive

    to eat those which contain the 3:1 ratio of carbs to fiber. In this way

    you'll get between 8 and 15 grams of fiber everyday. You may also want to

    take a carbohydrate-free fiber supplement, available at any health food

    store, if your fiber intake is less than the range above. Additionally, if

    your bowel movements are less than one per day, after two weeks of

    adaptation to the diet, you may want to consider adding in a fiber

    supplement as well. (3) Take a complete multi-vitamin and mineral

    supplement everyday to prevent any possibility of vitamin and mineral

    deficiencies, (4) Optionally, take free-form glutamine in supplemental

    form for optimal intestinal, skeletal muscle and renal functioning.

    The walk-away message from this paper is an understanding that

    lipolysis is the process of dissolving fat and there is "no lipolysis

    without ketosis and no ketosis without lipolysis" (5) and how this diet

    differs substantially from a starvation diet and doesn't cause metabolic

    acidosis in normal insulin producing individuals. We aren't going to die

    by placing our bodies in a state of benign dietary ketosis while we get

    our blood sugar under control and lose excess weight in the process. In

    fact, we may actually see an improvement in energy, health and mental

    stability in the absence of wild fluctuations in blood sugar. Eventually,

    you will want to bring in other food groups and carbohydrates, however, if

    you're carbohydrate sensitive, you will want to bring them in slowly and

    in measured quantities, not exceeding the carbohydrate levels which your

    body can efficiently process without laying down fat and without causing

    wild fluctuations in blood sugar. In the meantime, many people will enjoy

    a reduction in bodyfat with an exceptionally little amount of lean mass

    lost in the process, as well as an increase in perceived energy and

    perhaps, for the first time in many years, a stabilization of blood sugar.

    References:

    1. Spalding, K, Amorde, MS RD, (J Am Diet Assoc, Nov. 96, pp.1134)

    2. Cataldo, Debruyne, Whitney, "Nutrition and Diet Therapy", 1995

    3. Moran, Scrimgeour, Horton, Ochs, Rawn "Biochemistry" 2nd Ed., 1994

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    5. Atkins, Robert MD "Dr. Atkins New Diet Revolution", 1995

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    7. Groff, J, Sareen, G, Hunt, S "Advanced Nutrition and Human Metabolism",

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    8. Rifkin, Porte "Diabetes Mellitus: Theory and Practice", 1990

    MORE READING ON KETOGENIC DIETS

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    diet J Appl Behav Anal, 1995 Fall

    Nebeling LC, et al Effects of a ketogenic diet on tumor metabolism and

    nutritional status in pediatric oncology patients: two case reports. J Am

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    Nebeling LC, et al Implementing a ketogenic diet based on medium-chain

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    Baron JA, et al A randomized controlled trial of low carbohydrate and low

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    Alford BB et al The effects of variations in carbohydrate, protein, and

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    oligosaccarides are a risk factor, fats are not. A case-control study in

    Belgium. Nutrition and Cancer (1987) 10(4):181-96

    :cool: TJ :cool:

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