What's that in your mouth?

7. January 2010 William Davis (17)



Fat = triglycerides

In other words, eat fat, whether it's saturated, hydrogenated, polyunsaturated, or monounsaturated, and blood levels of triglycerides will go up over the next 6 hours. This remains true if there are carbohydrates in the meal, or if there are NO carbohydrates in the meal. It also remains true if you chronically consume fats.

While fats are the primary determinant of postprandial (after-eating) triglycerides, carbohydrates are the primary determinant of fasting triglycerides.

So, if your triglycerides are high on a fasting cholesterol (lipid) panel, it's most likely because you overconsume carbohydrates.


Thanks to cartoonist Eli Stein, who has generously allowed me to reprint his artwork on these pages. Mr. Stein has published his work in dozens of magazines and newspapers, including the Wall Street Journal, Barron's, and Good Housekeeping. More of his work can be found at Eli Stein Cartoons.

De Novo Lipo-what?

5. January 2010 William Davis (16)
Humans have limited capacity to store carbohydrates. Beyond the glucose and glycogen in our blood and tissues, we have relatively little carbohydrate to draw from in time of energy need. That's why long-distance runners and triathletes have to carry sugar sources to keep blood sugar from plummeting.

Fat, of course, is different. We have virtually unlimited capacity to store energy as fat.

Because we have limited carbohydrate storage capacity, what can the body do with the excessive quantities of carbohydrates that Americans ingest? What becomes of a bagel for breakfast, wheat crackers for snacks, a whole wheat sandwich for lunch, pretzels, and whole wheat pasta that many people eat every day, not to mention the chips, soft drinks, and juices?

Excess carbohydrates are diverted to an interesting metabolic pathway called de novo lipogenesis (DNL). This refers to the liver's ability to make triglycerides from excessive carbohydrates in the diet. Triglycerides are packaged for release into the blood as VLDL. VLDL, in turn, interacts with other lipoproteins, creating small LDL particles, reduced HDL and smaller, less protective HDL. High VLDL will be measured on a standard cholesterol panel as higher triglycerides.

A University of California (Berkeley, San Francisco) group has done much of the work describing DNL.

A diet weighed towards carbohydrates, especially if 50% or greater calories are carbohydrate, is sufficient to provoke plenty of DNL, even in slender people. DNL is a big part of the reason why low-fat (and, thereby, high-carbohydrate) diets result in higher triglycerides. DNL really gets turned on many-fold if the carbohydrates are "simple," rather than "complex."

Overweight people, however, can demonstrate five-fold greater DNL even with lesser quantities of carbohydrate intake (e.g., 40% fat, 46% carbohydrate, 14% protein):





From Schwarz et al 2003. Mean (± SEM) fractional de novo lipogenesis in lean normoinsulinemic (NI), obese NI, and obese hyperinsulinemic (HI) subjects after 5 d of consuming a high-fat, low-carbohydrate diet and in different lean NI and obese HI subjects after 5 d of consuming a low-fat, high-carbohydrate diet. Values with different superscript letters are significantly different.


Excessive carbohydrates, a la standard low-fat diets, are good for nobody. The concept of de novo lipogenesis fills in a theoretical hole that now explains why people who eat carbohydrates have higher triglycerides, VLDL, and, eventually, insulin resistance and diabetes.

Gretchen's postprandial diet experiment II

3. January 2010 William Davis (37)
I previously posted Gretchen's postprandial diet experiment, in which she consumed a low-fat diet for a day, followed by a low-carbohydrate diet for a day. Grethen monitored blood glucose and triglycerides with fingerstick checks. (Blood glucose can be checked on any widely available glucose monitor; triglycerides can be monitored with the Cardiochek device.)

Let's now discuss what happened.

On the low-carb, high-fat day, there was an initial surge in triglycerides to 250 mg/dl late morning, followed by a secondary peak several hours following dinner. Because fat is mostly triglycerides, Gretchen's high-fat (sausage, bacon, butter, whole-fat yogurt) breakfast provided a large quantity of triglycerides that needed to be absorbed. This generally occurs over approximately 6 hours, varying depending on body weight, how accustomed you are to fat, activity level during the day, the kind of fat in the meal. The high content of saturated fat in Gretchen's high-fat breakfast likely caused the somewhat slower drop in triglycerides over approximately 7 1/2 hours.

As Gretchen herself had noted, triglycerides the following day were lower, a typical low-carb response. Blood sugar throughout showed only minor variation, with only small postprandial increases.

Thus, Gretchen experienced what we'd expect with a low-carb, high-fat diet: an initial high surge in triglycerides, followed by a decline in fasting levels, while blood sugar shows a normal contour.







Now, the more confusing low-fat experience:



Blood glucose makes a striking peak at 200 mg/dl after the low-fat breakfast of pasta and rice, in contrast to the low-carb breakfast. Triglycerides behaved very differently from the low-carb experiment: While there was no initial postprandial surge, there was a late surge developing 6-24 hours later. The late surge continued into the next day, with fasting levels the following morning (210 mg/dl) exceeding the starting triglyceride level (60 mg/dl).

The one potentially confusing aspect of all this is Gretchen's late rise in triglycerides on the low-fat diet. This phenomenon is due to something called de novo lipogenesis, or the liver's conversion of carbohydrates to triglycerides that occurs when an excessive carbohydrate load comes through diet. Because the human body cannot store anything beyond a minor quantity of carbohydrates (as glucose and glycogen), carbohydrates are converted to fats.

Another factor causing the late triglyceride increase is insulin resistance, given the high blood sugar response. When insulin resistance is present, the activity of the enzyme, lipoprotein lipase, is reduced. Less lipoprotein lipase activity allows slower VLDL degradation, allowing VLDL (and thereby triglycerides contained in VLDL) to "stack up" in the blood. Thus, the higher triglycerides late after eating and into the next morning.

One issue to be aware of: Acute responses can differ from chronic responses. In other words, had Gretchen had the luxury (and time and money) to conduct the experiment over, say, 4 weeks, rather than a single day, there would be somewhat different responses. The best data on this come from Dr. Jeff Volek of the University of Connecticut, in which 4 weeks of low-carbohydrate eating modify fasting and postprandial responses over time.

Several conclusions can be made from Gretchen's experience:

1) Low-carb, high-fat acutely generates extravagant postprandial triglyceride responses.
2) Low-fat causes a late triglyceride surge and higher fasting triglycerides.
3) Low-fat leads to high blood sugars and, by implication, diabetes.


Both the low-carb and the low-fat responses are undesirable, both leading to increased risk for heart disease. Which is worse? I believe that low-fat is more destructive, since it leads over time to both high triglycerides and diabetes, while low-carb/high-fat only leads to postprandial triglyceride surges, at least acutely.

How to best balance the responses to reduce risk for heart disease? That's a discussion for future.


Again, my thanks to Gretchen and the substantial amount of effort that went into generating these numbers. More of Gretchens' own writing can be found on her blogs:
http://wildlyfluctuating.blogspot.com
http://www.healthcentral.com/diabetes/c/5068

A wheat-free 2010

2. January 2010 William Davis (22)
A Heart Scan Blog reader sent this fascinating description of his wheat-free adventure.

Whenever I discuss this notion of going wheat-free and the incredible health effects that develop, I invariably receive comments or emails saying something like "I eat wheat and feel fine. That can't be true." The problem is that not everybody needs to go wheat-free. 20-30% of people can include wheat in their diet and suffer little more than weight gain, some not at all.

But stories like Michael's (below) are commonplace in my experience. I've had many patients who, at first, refused to believe that wheat exposure might be the underlying cause for health struggles. But they finally give it a try and find that rashes, arthritis, acid reflux, irritable bowel symptoms, mood swings, anger, etc. are miraculously improved or gone.

Anyway, hear what Michael has to tell us:


Dr. Davis,

I want to thank you. I was browsing the web a while back and happened to stumble upon your blog post about wheat belly. The first thing that caught my attention was that I thought you had somehow gotten a photograph of me. The young man you posted an image of looked exactly like me. So I read what you had to say. After reading, I thought "Four weeks isn’t so bad. I think I can handle this."

It has now been nine weeks and all I can say is that I am completely amazed. Let me say first that twice in the past twenty years I have been tested for allergies. The first time I was tested I showed a slight reaction to Timothy Grass, but not enough to cause me any problems. The second testing I did not show a reaction to anything. So, I have always assumed that my chronic sinus problem were due to sensitivities to environmental pollutions. Now I am not so sure. I would like to list for you everything that has happened to me since I eliminated wheat from my diet.

1. I have lost a total of 12 pounds in the last 9 weeks.
2. I have lost 1 ¼ inches of belly fat
3. I have lost a tremendous amount of fat from my neck.
4. My entire life I have had problems with oily hair. I could wash my hair and three hours later I looked as if I hadn’t washed in a week. Now my hair stays clean and soft for two to three days without shampoo.
5. My hair was always flat and stringy. Now it has lots of body.
6. I used to have thick layers of dry skin on my scalp. It would come loose in chunks as large as a fingernail. That dry scalp is gone.
7. I used to have dry flaky skin that seemed to secrete oil. That no longer happens. My skin is now soft and smooth.
8. I have lived with bad acne for at least 35 years. Now it is hard to find a pimple on my body.
9. I have always had to fight dehydration. That is no longer a problem.
10. I used to drink two large cups of coffee every morning just to be able to function. I now have enough energy that I have eliminated caffeine from my diet.
11. I sleep more soundly than ever before and my dreams are clear and vivid.
12. My thought processes are more active and clear than they have ever been.
13. My chronic sinus issue is now a thing of the past.
14. I used to have problems with getting the “shakes” if I had gone more than a couple of hours without eating. It was as if I was suffering from low blood sugar. I would even be afraid that I would pass out. Now all I feel is hunger. I can go all day without eating and never feel in danger of losing consciousness.


Today is Thursday. This past Monday my wife and I were eating out and I ordered a burger without a bun. What I didn’t realize was that the burger would arrive covered in onion rings. I knocked the mountain of onion rings onto the plate but there were still a couple that were embedded in the cheese. I decided, what the hell, a couple of onion rings shouldn’t make that much of a difference. I will not make that mistake again anytime soon. Within 30 minutes I felt like there was a steel spike going through my left eye socket. I don’t remember ever being in that much pain. My sinuses were exploding. This morning, as I write this, I still feel the vestiges of that pain. Just enough that I know it is there. But after two and a half days, I am at least able to function again.

I owe you a debt of gratitude. You may have just saved my life. In the very least you have given me the means to improve my life in ways that I never thought possible.

Thank you so much,
Michael B.


Now, if wheat exposure can do that in Michael, what damage can it do in other people?

Personally, I previously experienced many of the same symptoms that Michael suffered, all gone with wheat elimination.

My advice: If you have any inkling that you might have a wheat sensitivity, make a New Year's resolution to stay wheat-free for 4 weeks and see whether you can feel any difference. Not everybody will, but many will be telling us about the dramatic health turnarounds they experienced.

Lipoprotein lipase and you

30. December 2009 William Davis (0)
Lipoprotein lipase can make the difference between having heart disease and not having it. Having sky-high triglycerides or normal triglycerides. It can mean dinner hanging around for over 12 hours in the bloodstream, rather than the usual 4-6 hours.

If you take niacin, you must exercise

30. December 2009 William Davis (23)
We use a lot of niacin in the Track Your Plaque program.

Niacin:

--Increases HDL and shifts HDL towards the large, protective fraction

--Reduces small LDL--In fact, niacin is the best treatment we have to reduce small LDL after wheat elimination and carbohydrate reduction.

--Reduces fasting and postprandial (after-eating) triglycerides

--Reduces heart attack risk by 20-28%--even as a sole agent.


But . . . niacin also triggers higher blood sugar because it partially blocks the effects of insulin (insulin "resistance").

While the net effect of niacin remains positive, the provocation of insulin resistance is not such a good thing. Can it be minimized or eliminated?

Yes, through exercise. Here's one interesting observation in obese (BMI 34.0), sedentary men given placebo, exercise, niacin (1500 mg Niaspan, once per day), or niacin + exercise:





From Plaisance et al 2008.

Blood was drawn following a high-fat meal challenge. (Yes, a high-fat challenge, not a carbohydrate challenge. In this study, there were only 17 grams carbohydrates in the test meal, but 100 grams fat. More on this in future.) Exercise consisted of walking for 50 minutes at a moderate pace one hour prior to the meal challenge.

You can see from the graph that exercise partially corrected the increased insulin level provoked by niacin.

Judging from this and other studies, exercise can help minimize the insulin-blocking effects of niacin. It doesn't take much, just moderate exercise for at least 30 minutes.

Adequate sleep can also help, since sleep deprivation is a potent trigger for insulin resistance, only worsened in the presence of niacin. Vitamin D supplementation to achieve desirable blood levels (which I define as 60-70 ng/ml) is also an effective means to minimize this effect.

To track small LDL, track blood sugar

24. December 2009 William Davis (28)
Here's a trick I learned after years of fussing over people's small LDL.

To gain better control over small LDL, follow blood sugars (blood glucose).

When you think about it, all the foods that trigger increases in blood sugar also trigger small LDL. Carbohydrates, in general, are the most potent triggers of small LDL. The most offensive among the carbohydrates: foods made with wheat. After wheat, there's foods made with cornstarch, sucrose (table sugar), and the broad categories of "other" carbohydrates, such as oats, barley, quinoa, sorghum, bulghur, etc.

Assessing small LDL requires a full lipoprotein assessment in which small LDL particles are measured (NMR, VAP, GGE). Not the easiest thing to do in the comfort of your kitchen.

However, you can easily and now cheaply check your blood sugar. Because blood sugar parallels small LDL, checking blood sugar can provide insight into how you respond to various foods and know whether glucose/small LDL have been triggered.

Here's how I suggest patients to do it:

1) Purchase an inexpensive blood glucose monitor at a discounter like Walmart or Walgreen's. You can buy them now for about $10. They're even sometimes free with promotional offers. You will also need to purchase lancets and test strips.

2) With a meal in question, check a blood sugar just prior to the meal, then again 60 minutes after finishing the meal. Say, for example, your pre-meal blood sugar is 102 mg/dl. You eat your meal, check it 60 minutes after finishing. Ideally, the postprandial (after-meal) blood sugar is no more than 102 mg/dl, i.e., no higher than pre-meal.

Perhaps you're skeptical that oatmeal in skim milk with walnuts and raisins will do any damage. So you perform this routine with your breakfast. Blood sugar beforehand: 100 mg/dl. Blood sugar 1 hour post: 163 mg/dl--Uh oh, not good for you. And small LDL will be triggered.

This approach is not perfect. It will not, for example, identify "stealth" triggers of blood sugar and small LDL like pasta, for the same reasons that pasta has a misleadingly low glycemic index: sugars are released slowly and not fully evident with the one-hour blood sugar.

Nonetheless, for most foods and meals, tracking your one-hour postprandial blood sugar can provide important insight into your individual susceptibility to sugar and small LDL-triggering effects.

C-reactive protein: Fiction from the drug industry?

21. December 2009 William Davis (0)
C-reactive protein (CRP) is the liver product of inflammatory responses anywhere in the body. If there's an inflamed left knee, CRP will be increased. If viral bronchitis is making you cough, then CRP will be increased.

The argument put forward by the drug industry is that, because CRP indicates underlying inflammation, very low-grade levels that can be measured in the absence of overt inflammation like the sore knee or bronchitis is associated with increased risk for cardiovascular events. There are now many studies that conclusively demonstrate that, the higher the CRP, the greater the cardiovascular risk.

Naturally, any marker of risk is followed by the inevitable study: Do statin drugs reduce the excess cardiovascular risk of excessive CRP?

And, yes, indeed they do. My statin-crazed colleagues rave about the so-called "pleiotropic," or non-lipid, effects of statins. CRP reduction and the reduction of risk associated with CRP result with statin treatment.

But is life really statin vs. placebo, as most statin trials are constructed? Are there strategies that can outdo statins like Crestor for reduction of CRP?

Watch your fish oil labels

17. December 2009 William Davis (36)
A quick quiz:

How much omega-3 fatty acids, EPA + DHA, are in each capsule of fish oil with the composition shown on the label below:





If you said 1340 mg (894 mg + 446 mg), sorry, but you're wrong. There are 670 mg EPA + DHA per capsule.

Did you notice that the composition, or "Supplement Facts," lists the contents of two capsules? Rather than the usual one capsule contents, this product label lists two capsules.

I don't know why some manufacturers or distributors do this. However, I have seen many people tripped up by this kind of labeling, taking half the omega-3 fatty acids they thought they were taking. This can be important when you are trying to obtain a specific dose of EPA + DHA to reduce triglycerides, reduce Lp(a), control abnormal heart rhythms, reduce bipolar mood swings, or other important effects.

I liken this to pulling up to a gas station where the sign says gasoline for $1.25. Wow! Can't beat that! You then find out that it's really $1.25 for a half-gallon, or $2.50 a gallon.

In truth, the labeling is accurate; it's just very easy to not notice the two capsule composition.

Why do I need a prescription for Olava?

16. December 2009 William Davis (0)
Imagine this:





What is OLAVA?

Olava is prescription olive oil. It is the purest, highest concentration of olive oil available.




Why Do I Need a Prescription for OLAVA?

Studies show that olive oil contains essential fatty acids, "good" fats that:



--Contain natural compounds your body needs for good health but can't produce on its own.

--Has antioxidants that may provide protection from heart disease.



So, it is common for people to ask why they need a prescription for OLAVA if it is made from a natural ingredient--olive oil. It's time to get the facts about OLAVA. Learn why OLAVA is different from olive oil you can buy at a store.



OLAVA Is an FDA-Approved Medication

OLAVA is the only FDA-approved medicine made from olive oil that's proven, along with diet, to reduce risk for heart disease


The FDA enforces standards to make sure that prescription medications like OLAVA are safe, effective, and quality controlled.


The way OLAVA is manufactured is reviewed and approved by the FDA.


OLAVA uses a 10-step purification process that helps remove lead and other environmental toxins that can be present in olive oil.


Each 1-gram capsule of OLAVA contains 1000 mg of pure olive oil.


The FDA-approved dose of OLAVA is 4 capsules per day. It could take up to 2 tablespoons per day of regular olive oil to provide the same amount of active ingredients proven to lower heart disease risk.




What Else You Should Know About Olive Oil

Regular olive oil has not been approved by the FDA to treat any specific disease like heart disease.



Olive oil doesn't have specific dosing information; it has a food label.



Olive oil does not go through an FDA-approved manufacturing process.





Talk to Your Doctor About OLAVA

If you have very heart disease, you may need a prescription medicine, along with diet, to treat your condition. Talk to your doctor about OLAVA. Print a trial offer to use on your first prescription of OLAVA.

Interview with Jimmy Moore of Livin' La Vida Low-Carb

Interview with Jimmy Moore of Livin' La Vida Low-Carb

7. September 2011 William Davis (11)
Here's my podcast interview with Jimmy Moore, host of the Livin' La Vida Low-Carb Show. (If you want to fast forward to the interview, go to time marker 41:20 on the slidebar.)



In the podcast, I talk about how the Track Your Plaque program and its focus on lipoprotein testing, along with the need to reverse the incredible epidemic of diabetes and pre-diabetes, led to elimination of all wheat from the diet and the book, Wheat Belly.
Tags :

Comments (11) -

  • Might-o'chondri-AL

    9/8/2011 1:03:32 AM |

    To Pedro  (posted here since Server blocked),
    Journal Biological Chemistry 2003,278:54-63  "A Type 1 Diabetes-related Protein from Wheat" that refers to globulin (a storage molecule of wheat) being antigenic for autoimmune problems was where I saw wheat genome estimated in 2002 to be 16.5 gigabase. I read that article when tried to track down Doc's reason to declare wheat implicated in Type 1 diabetes. Full article at www. jbc.org/content/278/1/54.full

    A 2010 reference to wheat genome is in journal Cytogenic and Genome Research, Vol. 129, No. 1-3, 2010 abstract's 1st sentence refers to wheat genome as 1C-17Gbp. English abstract at http://content.karger.com/
    produktedb/produkte.asp?doi=313072

    As I understand it 1 giga-base   =  109 base pairs, and mega-base =  106 base pairs; it's not a formula like that used to compare computer bytes of giga-bytes and mega-bytes.

    You might have research use for the Harvard Gene Index Project's Computational Biology & Functional Genomics Laboratory; if use link below look at top of page and see a category for "Gene Indices", click there to then choose from subjects "Plants", "Animal" or several other indices.
    http://compbio.dfci.harvard.edu/tgi

  • Might-o'chondri-AL

    9/8/2011 1:06:38 AM |

    To Pedro  (Server blocked elsewhere),
    Journal Biological Chemistry 2003,278:54-63  "A Type 1 Diabetes-related Protein from Wheat" that refers to globulin (a storage molecule of wheat) being antigenic for autoimmune problems was where I saw wheat genome estimated in 2002 to be 16.5 gigabase. I read that article when tried to track down Doc's reason to declare wheat implicated in Type 1 diabetes. Full article at www. jbc.org/content/278/1/54.full

  • otterotter

    9/8/2011 2:35:31 AM |

    Dr.Davis,

    Just listened to the podcast, that's fantastic !

    I have been diagnosed with TD2 last Sept, and since then being on the very low carb. Everything went well except my total cholesterol went out of control, and in January it was 400.

    What I don't understand is my Lp(a) is close to 0 ( less than 5.0 mg/dL as it was reported).

    Here is my latest direct measurements from SPECTRACELL LAB in Huston.

    VLDL Particels: 122 nmol/L (needs to be < 85)
    Total LDL Particles : 1271 nmol/L (needs to be < 900)
    Non-HDL Particles: 1394 nmol/L (needs to be < 1000)
    RLP(Remnant Lipoprotein) 205 nmol/L (needs to be < 150)
    Small Dense LDL III: 552 nmol/L (needs to be < 300, marked as very high risk right now)
    Small Dense LDL IV: 96 nmol/L (needs to be  7000)
    Large Buoyant HDL 2b: 2045 nmol/L (needs to be > 1500)

    Apo B-100: 127 mg/dL (needs to be < 80)
    Lp(a) : less than 5 mg/dL (needs to be < 30)
    C-Reactive Protein-hs : 0.2 mg/L (needs to be < 1)
    Insulin: less than 4.0 uIU/mL (needs to be < 35)
    Homocycteine: 12.3 umol/L (needs to be < 11)

    Total Cholesterol: 259 mg/dL
    LDL: 159 mg/dL
    HDL: 59 mg/dL
    Triglycerides: 118 mg/dL
    Non-HDL-Chol : 200 mg/dL


    I already removed the cheese and eggs from the diet, I suspect I am APOE 4.

    Any comments on my pattern ?

    thanks!

    otterotter

  • Might-o'chondri-AL

    9/8/2011 2:53:25 AM |

    To DCMarc  (server blocked where belongs),
    Benfotiamine, a synthetic thiamine used in diabetic neuropathy, increases enzyme trans-keto-lase inside a cell. The use in diabetics and neuro-degeneration may (?) require professional consideration in cancer cases. Trans-keto-lase spurs cells to go into aerobic glycolysis (aerobic here refers to cell performing glycolysis despite oxygen being around for performing normal mitochondrial oxidative phosphorylation) for processing cells glucose; this aerobic glycolysis is the  famous Warburg effect and experimentally administering trans-keto-lase augments cancer cell proliferation (likewise experimentally spiking up thiamin increases trans-keto-lase).

    Trans-keto-lase works for diabetics & in neuro-degeneration because  it pushes cell's glucose (via transcription once cAMP binds to it)  into the hexose mono-phosphate shunt ( of D-glucose-6p to D-glucono-lactone 6P to D-glycr-aldhehyde-3-phosphate) called the Pentose  Pathway (where hexose forms into pentose). This  process generates NADPH which boosts anti-oxidant glutathione ( & thioredoxin) production inside the cell. Also NADPH brings on the  activation of  the cell's endoplasmic reticulum's Unfolded Protein Response which helps the endoplasmic reticulum (ER) tolerate dangerous endoplasmic reticulum stress (ER stress is significant in diabetes and neuro-degeneration).

    ER stress, with protein folding complications, sees NADP+ accumulate and so augmenting trans-keto-lase pushes quicker output of NADPH to keep pace; this  triggers the Unfolded Protein Response to induce Cu,ZnSOD expression that then alleviates the ER stress (ie: helps ER tolerate demanding conditions).  This helps in that it  keeps the stressed ER  ( a state that coincides with more local super-oxide O--),  from seeding the dangerous (and largely un-neutralizable) hydroxyl radicals (hydroxyl radicals come about when super-oxide related hydrogen peroxide  provokes Fenton  & Haber/Weiss reactions reducing Cu++ or Fe+++ ). This is similarly how trans-keto-lase also benefits cancer cells ( rampant cancer cell growth demands protein folding that formally stresses the ER); the prevention against reactive oxygen species means cancer cells don't suffer apoptosis (cell death).

    Diabetics use of Befotiamine ( a dynamic fat soluble thiamine trans-keto-lase booster) will  help them similarly with their ER stress . In  their case the shift to using their regularly high glucose in the Pentose Pathway will mean quicker degradation of that glucose than if cells used mitochondrial oxidative phosphorylation. This also means the glycation (Doc warns against this from high glucose)  and thus tissue cells levels of advanced glycation end products (AGE) will be less; blunting the amount of AGE messing with monocytes and less endothelial dysfunction  amount to less inflammation, less diabetic oxidative stress and likewise less alteration of the vascular tissue such as atherosclerosis.

    Experimentally induced diabetes is often done by feeding a very high  fat diet. Much of the fat in a very high fat diet  acts to drive down the level of trans-keto-lase due to a transcription adaptationum within 8 weeks in rodents. For humans thiamine (B1) is often recommended to diabetics; cauliflower is a nice thiamine source to make into trans-keto-lase.

  • Might-o'chondri-AL

    9/8/2011 6:26:09 AM |

    To  B. Smith (Server won't post where belongs ),
    Glutamine, an amino acid, is used by cancer cells to keep apoptosis (cell death) from happening in several ways. One way is how glutamine keeps the cell nucleus from condensing and stops the capsase 3 & capsase 8 cascades from starting apoptosis. The other way is how there is an increase in the  anti-oxidant glutathione synthesis when glutamine elevates NADPH (see comment above for ER stress).

    Tumor Necrosis Factor alpha (TNF) works to destroy a cancer cell by running down that cell's mitochondrial glutathione level; this needs to be replenished with glutathione from that cell's cytosol. Once there is a 35% plunge in mitochondrial glutathione that  alters the mitochondrial membrane so that it stops bringing in glutathione to the mitochondria and starts leaking out cytochrome c into that cell's cytosol (which can jump start an apoptosis program). Cancer cells' rapid growth strains the normal oxidative stress limits of a cell, so cancer cells draw in lots of glutamine to boost the level of ready glutathione inside that cell; then the cytosol can continually shore up the mitochondrial glutathione levels to prevent one of the apoptosis scenarios from starting .

    A cancer cell at some point has to "transform" to progress and needs lots of DNA at that stage; glutamine is needed for synthesis of cellular RNA & DNA. The bio-synthesis of nucleotides utilizes glutamine; and having lots of de-oxy-ribo-nucleotides around favors DNA replication at that cancer's key "transformation" stage (ie: S-phase). The use of glutamine by a cancer cell for converting into energy to run on, like some normal cells do, is not why cancer cells take up so much glutamine.

  • Galina L.

    9/8/2011 4:25:13 PM |

    @ Might-o'chondri-AL
    Dear Might, do you mind to tell what do you think about that cancer research result?
    l http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3117136/?tool=pubmed

  • Peter Silverman

    9/8/2011 6:58:08 PM |

    My cardiologist said, "look, I don't know about nutrition.  If you want to talk about nutrion, go talk to a nutritionist"

  • Might-o'chondri-AL

    9/9/2011 12:32:19 AM |

    Hi GalinaL,
    Cancer undergoes several oncongenic processes wherein the so-called epithelilial pheno-type cell (epithelial cells are +/-85% of cancer substrate cells) gets it's cell nucleus histones acetylated, which creates what is called "stemness"  (the ability of that cell to renew itself with potency, like our stem cells). This leads to a phase called epithelial-mesenchymal transition (where the morphing cell can go either way, either back to benign epithelial pheno-type or onward to dangerous mesenchymal pheno-type). It is when the enzyme histone acetyl-transferase no longer keeps that epithelial histone acetylated ( a sort of  limbo) that the epithelial cell's genetic expression gets knocked down permitting the further shift into full mesenchymal pheno-type .

    What is important to realize about cancer cell's taking over a cell's nuclear DNA is that when the pheno-type goes from epithelial to mesenchymal the cancer cell's mesenchymal pheno-type somehow still retains the ability to perform the stem cell "stemness" of indefinite replication. Your cited authors point out that keotones boost tumor growth (+/-2.5 times) and lactate boosts tumor metastasis (+/- 10 times); and  also that their metabolic use raises a cell's Acetyl-CoA and this increases the acetylation of histones causing more gene expressio. And so authors report limiting ketones and lactate in cancer seem to be the "achilles heel" to cut off in order to stop cancer's "stemness" (ie: inherent potential); their extrapolation from this is interesting as a theory..

    There are other processes beyond histone modification which show oncongenesis is not lineal. When the cancer cell is still just an epithelial pheno-type cell unit micro RNA (miRNA) of the miRNA-200 family group is un-methylated; and thus holds the epithelial pheno-type steady, because un-methylated miRNA isn't reactive enough for messenger RNA (mRNA) transcription. A 2nd stage is seen once hyper-methylation  occurs, while at the same time less miRNA is put out; this morphs the cancer cell into the mesenchymal pheno-type and at that stage metastasis is possible. While an advanced 3rd stage comes about when miRNA resurges somewhat; this is what makes extensive metastasis of cancer cells that have migrated start happening. (Lineal thinking about cancer is a trap, since it is methylation that lets cancer cells get going but later de-methylation that let's them thrive and patient outcome worsen).

    Warburg effect is suggested, by cited study, to be almost a lineal concept; which they propose to re-define as desireable if it simply limits lactate and ketone production in a cell. This theory has it's own trap because in the Warburg effect +/-60% of the carbon from glucose undergoing aerobic glycolysis in cancer cells is actually being used by cancer cells as a carbon scaffolding for "de novo" fatty acid synthesis to feed into fatty acid oxidation. In other words the elevated amount of cancer cell's aerobic glycolysis (Warburg effect) is really fostering fatty acid oxidation; and fatty acid oxidation increases cancer resistance.

    The cancer cells uncouple the mitochondria oxidative phosphorylation of glucose so that the a lot of the processing of glucose doesn't go all the way to normal completion of ATP production; instead cancer cells use the initial steps that perform oxidation of glucose to cleave off the carbon atoms from that glucose to use. In other words it is the mitochondrial uncoupling protein up-regulated by that cancer cell's genetic  transcription which, down the line, forces that cell to continue to escalate Warburg's aerobic glycolysis in order to keep up with energy demands as carbon skeletons get used up.

    Metaformin's use in cancer treatment was suggested by study's authors to support their "reverse Warburg" theory : that it is by forcing Warburg's aerobic glycolysis to occur, due to Metaformin,  which accounts for cancer control seen. This seems too lineal an interpretation of the events; especially with regard to preceding paragraph's explanation of how Warburg relates to unpredictable carbon molecule usage. Metaformin reliably does inhibit the mitochondrial complex 1; and this will stymie glucose (and also glutamate, which cancer cells prodigiously take in ) from going on to produce ATP. I would suggest that this also stops the oxidizing of glucose molecules and thus sparse carbon skeletons are available to make into fatty acids for burning.

    In addition Metaformin inhibiting mitochondrial complex 1 will also reduce fatty acid oxidation; this is because  NADH oxidation at that complex needs to happen in fatty acid oxidation. NAD+ is a crucial rate limiter in  fatty acid oxidation , but unless NADH can subsequently be re-oxidized as a molecule in the mitochondrial complex 1 it can't keep on driving fatty acid oxidation by lending out NAD+.  Metaformin use in cancer is even more complicated, because if the cancer has p53 then when glucose supply is low it manages to actually use more fatty acids to run on and then use auto-phagy house cleaning to avoid apoptosis death. Whereas, if a cancer does not have much p53 then Metaformin seems to be more effective in treating cancer.

  • Dr. William Davis

    9/9/2011 2:25:55 AM |

    Yup, and the nutritionist hawks the usual "cut your fat, eat more whole grains" line.

    It's a comedy of misinformation with advice from agencies paid for by your tax dollars.

  • Dr. William Davis

    9/9/2011 2:29:21 AM |

    Hi, otter--

    Obviously, I can provide only limited advice in a blog post.

    But I agree: Apo E4 is a prime consideration. However, keep in mind that small LDL remains the most atherogenic (plaque-causing) of all your patterns and still deserves the primary focus. Also, if this blood sample was drawn with ongoing weight loss, this alone can provide substantial distortions.

  • Galina L.

    9/9/2011 2:48:25 AM |

    Wow! I don't know who else would dissect that article like you did! I really, really appreciate you decision to replay on my question. Looks like  Metaformin could be healthful in more than one way in treating cancer.

Add comment

Loading