Dr. Cannell comments on vitamin D lab tests

14. July 2008 William Davis (9)
As always, Dr. John Cannell of The Vitamin D Council continues to teach us new lessons about vitamin D.

Apparently, Dr. Cannell is swamped with the attention that vitamin D is drawing, largely due to his efforts to publicize the enormous deficiency of Americans and his great talent for articulating the science. The most current newsletter, while a bit haphazard, makes some excellent new points that I reprint here.

(I did not reprint his conversation about "any form of vitamin D" being acceptable. My experience differs: In nearly 1000 patients who have taken vitamin D supplements, my experience is that most tablet forms are inconsistently absorbed, sometimes not absorbed at all. I therefore advocate only use of gelcaps or liquids. I'm told by members of Track Your Plaque, however, that they are witnessing reliable increases in blood levels of vitamin D by taking the powdered form of Bio Tech Pharmacal's product.)


Does it matter what reference lab my doctor uses?

Yes, it might make a huge difference. A number of methods exist to measure 25(OH)D in commercial labs. The two most common are mass spectrometry and a chemiluminescence method, LIAISON. The first, mass spectrometry, is highly accurate in the hands of experienced technicians given enough time to do the test properly. However, in the hands of a normally trained technician at a commercial reference lab overwhelmed with 25(OH)D tests, it may give falsely elevated readings, that is, it tells you are OK when in fact you are vitamin D deficient. The second method, chemiluminescence, LIAISON, was recently developed and is the most accurate of the screening, high throughput, methods; LabCorp uses it. Quest Diagnostics reference lab uses mass spec. Again, both Quest and LabCorp are overwhelmed by 25(OH)D requests. The problem is that the faster the technicians do the mass spec test, the more inaccurate it is likely to be. If your 25(OH)D blood test says "Quest Diagnostics" on the top, do not believe you have an adequate level (> 50 ng/ml). You may or may not; the test may be falsely elevated. Let me give you an example. A doctor at my hospital had Quest Diagnostics do a 25(OH)D. It came back as 99 ng/ml of ergocalciferol. He is not taking ergocalciferol (D2), he has never taken ergocalciferol, only cholecalciferol, and he is not taking enough to get a level of 99 ng/ml, 50 ng/ml at the most. His email to Dr. Brett Holmquist at Quest about why Quest identified a substance he was not taking went unanswered other than to say "any friend of Dr. Cannell's is a friend of ours."

Long story short: if your lab report says "LabCorp" on the top, it is probably accurate; if it says Quest Diagnostic, it may be falsely elevated. While LabCorp has also been overwhelmed with 25(OH)D requests, the LIAISON method they use is relatively easy to do and does not rely on technician skill as much as the mass spec methods do. I'm not saying this because I'm a consultant for DiaSorin, who makes LIAISON, I'm saying it because it is true. If you don't believe me, get Quest to make me an offer to be their consultant at 10 times what DiaSorin is supposed to be paying me ($10,000 per year) and see how fast I turn Quest down. If Quest fixes their test, I'd love to consult. The ironic thing: I've made both Quest and LabCorp lots of money via this newsletter, the website, and by repeatedly telling the press that people need to know their 25(OH)D level, which has contributed to the skyrocketing sales of 25(OH)D blood tests.

Demand for vitamin D tests soars as nutrient's potential benefits touted.

Here you can help. Find out which labs in your town use Quest Diagnostics and which use LabCorp. Have a 25(OH)D test at both labs the same day (you will have to pay for them yourself). Then send both results to the Vitamin D Council address below. If Quest Diagnostics does not fix their 25(OH)D test, the Vitamin D Council will fix it for them.



My doctor prescribed Drisdol, 50,000 IU per week. What is it?

Drisdol is a prescription of 50,000 IU tablets of ergocalciferol or D2. Ergocalciferol is not vitamin D but it is similar. It is made by irradiating ergosterol, which is found in many living things, such as yeast. D2 is not normally found in humans and most studies show it does not raise 25(OH)D levels as well as human vitamin D (cholecalciferol or D3) does. However, Drisdol is a lot better than nothing. The best thing to do, if you are vitamin D deficient, and a human, is to take human vitamin D, cholecalciferol, A.K.A. vitamin D3.



What is the ideal level of 25(OH)D?

We don't know. However, thanks to Bruce Hollis, Robert Heaney, Neil Binkley, and others, we now know the minimal acceptable level. It is 50 ng/ml. In a recent study, Heaney et al enlarged on Bruce Hollis's seminal work by analyzing five studies in which both the parent compound, cholecalciferol, and 25(OH)D levels were measured. It turn out that the body does not reliably begin storing the parent compound (cholecalciferol) in fat and muscle tissue until 25(OH)D levels get above 50 ng/ml. The average person starts to store cholecalciferol at 40 ng/ml, but at 50 ng/ml, virtually everyone begins to store it for future use. That is, at levels below 50 ng/ml, the body is usually using up the vitamin D as fast as you make it or take it, indicating chronic substrate starvation, not a good thing.

Hollis BW, Wagner CL, Drezner MK, Binkley NC. Circulating vitamin D3 and 25-hydroxyvitamin D in humans: An important tool to define adequate nutritional vitamin D status. J Steroid Biochem Mol Biol. 2007 Mar;103(3-5):631-4.

Heaney RP, Armas LA, Shary JR, Bell NH, Binkley N, Hollis BW. 25-Hydroxylation of vitamin D3: relation to circulating vitamin D3 under various input conditions. Am J Clin Nutr. 2008 Jun;87(6):1738-42.



I have advanced renal failure and I'm on dialysis, how much vitamin D should I take?

The same as everyone else. Since I have told you about commercial labs ripping you off, let's add some drug companies. Patients with advanced renal failure need activated vitamin D or one of it's analogs, available by prescription. This is very important as their kidneys cannot make enough 1,25-dihydroxy-vitamin D (calcitriol) to maintain serum calcium. However, the rest of their tissues activate vitamin D just fine and when those tissues get enough, and when the kidneys get more vitamin D, the calcitriol spills out into the blood, lowering their need for prescription calcitriol or one of its analogs. The companies that make the analogs don't like that, it means reduced sales. So these companies do nothing, the scientists behind these companies say nothing, and renal failure patients die prematurely from one of the vitamin D deficiency diseases.

Vieth R. Vitamin D toxicity, policy, and science. J Bone Miner Res. 2007 Dec;22 Suppl 2:V64-8.



When I asked my doctor for a 25(OH)D blood test, he just laughed and said it was all idiotic. What can I do?

Help me unleash the dogs of war, the plaintiff attorneys. If you read about past nutritional epidemics caused by society, such as beriberi or pellagra, you will realize that education alone will take decades. Physicians successfully fought against the idea that thiamine deficiency caused beriberi for decades. However, things are different now. The agents of change in modern America, as obnoxious as they are, are plaintiff attorneys. Once the first malpractice lawsuits claiming undiagnosed and untreated vitamin D deficiency led to breast cancer, autism, heart disease, etc., get past summary judgment, and they will, and end up in front of a jury, and they will, things will change rapidly. One of the main reason physicians do what they do is fear of lawsuits. In a matter of months, arrogance and ignorance will give way to 25(OH)D tests and vitamin D supplementation.

Goodwin JS, Tangum MR. Battling quackery: attitudes about micronutrient supplements in American academic medicine. Arch Intern Med. 1998 Nov 9;158(20):2187-91.


And, to help support Dr. Cannell's efforts (I sent him a check for $250 a few months back; time for more), here is his contact info:

John Cannell, MD
The Vitamin D Council

Send your tax-deductible contributions to:

The Vitamin D Council
9100 San Gregorio Road
Atascadero, CA 93422
Tags :

Comments (9) -

  • moblogs

    7/14/2008 1:11:00 PM |

    I think Dr. Cannell's making an impact internationally. I don't think it's any coincidence that British awareness of D deficiency is rising almost in tandem - but still quite behind - with US reports.

  • Jeffrey Dach MD

    7/15/2008 10:53:00 AM |

    John Cannell and Vitamin D

    I have noticed that, thanks to the efforts of Dr John Cannell, many mainstream docs in my area have begun to order Vitamin D tests and supplement when found to be low.

    Satellite Maps of the Earth  

    Satellite maps of the earth showing UV Sunlight exposure correlate with serum Vitamin D levels, and the farther north, the lower the Vitamin D, and the higher the incidence of Cancer and Multiple Sclerosis in our population.

    These NASA space satellite photos of North America color coded for UV sun exposure can be seen on Dr. Grant's Vitamin D Web Site.  Here, you will see a pattern remarkably similar to the incidence of cancer and multiple sclerosis. This is thought to be due to differences in Vitamin D levels. The farther north with less sun exposure and lower Vitamin D levels, there is an increased incidence of cancer and multiple sclerosis.

    Diseases Caused by, or Associated With Vitamin D Deficiency:

    Again here is the list: Osteoporosis, Hypertension, Cardiovascular disease, Cancer, Depression, Epilepsy, Type One Diabetes, Insulin resistance, Autoimmune Diseases, Migraine Headache, PolyCystic Ovary Disease (PCOS), Musculoskeletal and bone pain, Psoriasis.

    Vitamin D deficiency has been reported in 57% of 290 medical inpatients in Massachusetts, 93% of 150 patients with overt musculoskeletal pain in Minnesota, 48% of patients with Multiple Sclerosis, 50% of patients with lupus and fibromyalgia, 42% of healthy adolescents, 40% of African American Women, and 62 % of the morbidly obese, 83% of 360 patients with low back pain in Saudi Arabia, 73% of Austrian patients with Ankylosisng Spondylitis, 58% of Japanese girls with Graves’s Disease, 40% of Chinese adolescent girls, 40-70% of all Finnish medical patients. (the above is from Dr Cannell newsletter)

    Low Vitamin D in Florida?

    Surprisingly, we have been seeing low vitamin D levels even here in sunny Florida demonstrated by serum 25-OH Vit D blood testing.  These people avoid the sun for fear of skin cancer.

    To read a synopsis of Dr John Cannell's excellent work...Vitamin D Deficiency by Jeffrey Dach MD

    Jeffrey Dach MD
    4700 Sheridan Suite T
    Hollywood Fl 33021
    954-983-1443
    Jeffrey Dach MD
    Natural Medicine 101

  • Anne

    7/17/2008 12:25:00 AM |

    I have found many of the vitamin D articles that say 50% or 60% or 80% of the people were vitamin D deficient are using cutoffs of 30 or even 20ng/ml. If they were to use 40-50ng/ml as the low, all but a very few would be found to be deficient.

    What I don't understand are the people who tell me their doctor put them on 50,000 IU of ergocalciferol and when the level rises, they are told to discontinue it. I know one person who has gone through 3 cycles of vitamin D supplementation. She told me her doctor is puzzled as to why her D keep dropping. This should not happen when information is so easy to access.

  • Jessica

    7/17/2008 6:37:00 PM |

    I, too, can't understand the desire of physicians to use 50,000 IU of D2, which we know is only 30% as effective as D3. Plus, it uses a prescription and costs more per pill than D3.

    A fantastic graph of Disease states and the effects of D can be found at the grassroots website Dr. Cannell referred to in his recent newsletter.

    Dr. C Grant developed the graph and with his permission, we've reproduced it and have copies of it hanging in our exam rooms. It's a very powerful tool to use when talking with patients about the important of optimizing D levels.

  • lizzi

    8/21/2008 10:56:00 PM |

    Actually Labcorp will use either chemoluminescence (081950) or mass spec (500510).  The mass spec is through Esoterica which invented mass spec, so it is probably OK.  If you prefer chemoluminescense, then specify the correct code. (081950).

  • mike V

    12/2/2008 5:17:00 PM |

    More vindication:

    http://www.sciencedaily.com/releases/2008/12/081201200032.htm
    *Preventive Vitamin D Screening Avocated*

    In their review article, published in the December, 9, 2008, issue of the Journal of the American College of Cardiology (JACC), the authors issue practical recommendations to screen for and treat low vitamin D levels, especially in patients with risk factors for heart disease or diabetes.

    "Vitamin D deficiency is an unrecognized, emerging cardiovascular risk factor, which should be screened for and treated," said James H. O'Keefe, M.D., cardiologist and director of Preventive Cardiology at the Mid America Heart Institute, Kansas City, MO. "Vitamin D is easy to assess, and supplementation is simple, safe and inexpensive."

    mikeV

  • Vitamin D Blood Test

    12/10/2009 7:10:58 PM |

    I would of never thought that about  Labcorp and quest. i would of thought that a lab test is a lab test.

  • http://domarketingeasy.co.uk/

    10/20/2010 8:49:07 AM |

    HERBAL STORE provies all type of herbal natural products,  vitamins and herbal remedies, and natural health remedies in his store. herbal remedies have been around for centuries, and were the precursor to modern medicine. One stop store for herbal treatment for men's health and herbal health store uk.
    herbal treatment for men's health

  • buy jeans

    11/3/2010 10:36:09 PM |

    The ironic thing: I've made both Quest and LabCorp lots of money via this newsletter, the website, and by repeatedly telling the press that people need to know their 25(OH)D level, which has contributed to the skyrocketing sales of 25(OH)D blood tests.

Add comment

Loading

Bosom buddies

9. October 2010 William Davis (22)
Male breast reduction surgery is a booming business. While most industries are in a downward tailspin, breast reduction surgery in men is growing at double-digit rates.

Other efforts, some legitimate, some not, are also cropping up, all intended to help men deal with this embarassing problem:

Exercise programs to reduce male breast size.

Liposuction--Not just for the belly!

Plastic surgery

Gynexin--a supplement that purportedly reduces male breast size.

Conventional medical treatment also includes estrogen blocking drugs, the same ones used to treat breast cancer, drugs like tamoxifen. There's even clothing intended to make breasts less obvious.


While male breast enlargement--"gynecomastia"--can occasionally occur due to rare endocrinologic problems, such as high prolactin hormone levels (hyperprolactinemia) or somewhat more commonly as failed testosterone production (hypogonadism), the vast majority of men who suffer with this problem simply have high estrogen levels.

Makes sense: Women develop larger breasts during development mostly due to increased levels of estrogen. A parallel situation in men likewise stimulates breast tissue.

So where does the excess estrogen come from?

Visceral fat converts testosterone to estrogen. Men with excess visceral fat therefore develop low levels of testosterone and high levels of estrogen. Estrogen levels can, in fact, be substantially higher compared to slender males.

So what foods cause the accumulation of visceral fat and, thereby, increased estrogen and decreased testosterone?

Foods that increase blood glucose and insulin to the greatest degree are the foods that begin this cascade. The common foods that increase blood sugar the most? Here's a list, starting with most blood glucose-insulin provoke at the top, least at the bottom:

Gluten-free foods (dried, pulverized cornstarch, rice starch, potato starch, tapioca starch)
Whole wheat bread
Sucrose
Milky Way bars
Snickers bars

So the whole wheat sandwiches you've been eating increase blood sugar and insulin, leading to visceral fat. (And, yes, whole wheat bread increases blood sugar higher than Milky Way bars and Snickers bars.) The more visceral fat grows, the more resistant to the effects of insulin you become, further escalating blood sugar. Estrogen increases, testosterone drops, mammary gland tissue grows, normal male breasts grow to B- or C-cup size.

Yet again, an entire industry is growing from the unintended consequence of conventional advice. In this instance, the advice to "eat more healthy whole grains" leads to this booming industry of male breast reduction efforts from surgery to medications to clothing. The REAL solution: Eliminate the foods that start the process in the first place.

Don't be a dipstick

3. October 2010 William Davis (32)
If I want to know how much oil is in my car's engine, I check the dipstick.

The dipstick provides a gauge of the amount of oil in my engine. If the dipstick registers "full" because there an oil mark at one inch, I understand that there's more than one inch of oil in my engine. The dipstick provides an indirect gauge of the amount of oil in my engine.

That's what cholesterol was meant to provide: A gauge, a "dipstick," for the kind of lipoproteins (lipid-carrying proteins) in the bloodstream.

Lipoproteins are a collection of particles that are larger than a single cholesterol molecule but much smaller than a red blood cell. Lipoproteins consist of many components: various proteins, phospholipids, lots of triglycerides, as well as cholesterol. In the 1960s, methods to characterize lipoproteins were not widely available, so the cholesterol in lipoproteins were used as a "dipstick" to assess low-density lipoproteins ("LDL cholesterol") and high-density lipoproteins ("HDL cholesterol"). (Actually, even "LDL cholesterol" was not measured, but was derived from "total cholesterol," the quantity of cholesterol in all lipoprotein fractions.)

Some other component of lipoproteins could have been measured instead of cholesterol, such as apoprotein B, apoprotein C, or others, all meant to act as the "dipstick" for various lipoproteins.

Relying on cholesterol to characterize lipoproteins provides a misleading picture. Imagine watching cars go by at high speed while standing on the side of the highway. You want to count how many people--not cars, but people--go by in a given amount of time. Because you cannot make out the detail of each and every car whizzing by, you count the number of cars and assume that each car carries two people. Whether it's rush hour, Sunday morning, late evening, rainy, sunny, or snowing, you make the same assumption: two people per car.

That's what cholesterol does: It is assuming that each and every lipoprotein particle (car) carries the same amount of cholesterol (people).

But that may, obviously, not be true. A bus goes by carrying 25 people. Plenty of cars may carry just the driver. People carpooling may be in cars carrying 3 or 4 people. Assuming just 2 people per car can send your estimates way off course.

That is precisely what happens when your doctor tries to use conventional cholesterol values (total cholesterol, LDL cholesterol) to gauge the lipoproteins in your bloodstream. Measuring cholesterol can also provide the false impression that cholesterol is the cause of heart disease, even though it was originally meant to simply serve as a "dipstick."

What we need to do is to characterize lipoproteins themselves. We can distinguish them by size, number, density, charge, and the type and form of proteins contained within. It provides greater insight into the composition of lipoproteins in the blood. It provides greater insight into the causes underlying coronary atherosclerotic plaque. It can also tell us what dietary changes trigger different particle patterns and how to correct them.

Until you have a full lipoprotein analysis, you can never know for certain 1) if you will have heart disease in your future, or 2) how your heart disease was caused.

Unfortunately, the vast majority of doctors are perfectly content to just count cars going by and assume two people per car, i.e., confine assessment of your heart disease risk using cholesterol . . . just as drug industry marketing has instructed them.

It's not your job to educate your doctor. If he or she refuses to provide access to lipoprotein testing to better determine your heart disease risk, then consider going out on your own. Many of our Track Your Plaque program followers have obtained lipoprotein testing on their own through Direct Labs.

The ultimate insurance company cost savings

29. September 2010 William Davis (48)
I had a very disturbing conversation with a physician who is employed by an insurance company last week.

I admitted a patient in the hospital for very clear-cut reasons. She is one of my few non-compliant patients, doing none of the strategies I advocate--no fish oil, no vitamin D, no correction of her substantial lipoprotein abnormalities, not even medication. Much of this was because of difficult finances, some of it is because she is from the generation (she is in her late 70s) that tends to ignore preventive health, some of it is because she is a kind of happy-go-lucky personality. So her disease has been progressive and, now, life-threatening, including an abdominal aneurysm near-bursting in size (well above the 5.5 cm cutoff). The patient is also a sweet, cuddly grandmother. I have a hard time bullying nice little old ladies.

While she was in the hospital, the social worker told me that her case was being reviewed by her insurer and would likely be denied. Their medical officer wanted to speak to me.

So the medical officer called me and started asking pointed questions. "Why did you do that test? You know that she's not been compliant. Are you sure you want to do that? I don't think that's a good idea." In other words, this was not just a review of the case. This was an opportunity for the insurance company to intervene in the actual care of the patient.

Then the kicker: "Have you considered not doing anything and . . . just letting nature take its course?"

At first, I was stunned. "You mean let the patient die?"

Expressed in such blatant terms, while he was trying to be diplomatic, made him back down. "Well, uh, no, but she is a high-risk patient."

Anyway, this was the first instance I've encountered in which the insurance company is not just in the business of reviewing a case, but actually trying to intervene during the hospital stay, to the point of making the ultimate healthcare cost savings: Letting the patient die.

Unfortunately, never having had an experience like this before, I did not think to record the conversation or take notes. I am wondering if this is an issue to be taken up by the Insurance Board . . . or is this a taste of things to come as the health insurers fall under increasing pressure with the legislative changes underway?

Salvation from halogenation

24. September 2010 William Davis (26)
Iodine is a halogen.

On the periodic table of elements (remember the big chart of the elements in science class?), the ingenious table that lays out all known atomic elements, elements with similar characteristics are listed in the same column. The elegant genius of the periodic table has even allowed prediction of new, undiscovered elements that conform to the "laws" of atomic behavior.

Column 17 (also called "group VIIa") contains all the halogens, of which iodine is one member. Other halogens include fluorine, chlorine, and bromine.

Odd phenomenon in biologic systems: One halogen can often not be distinguished from another. Thus, a chlorinated compound can cleverly disguise itself as an iodinated compound, a brominated compound can mimic an iodinated compound, etc.

What this means in thyroid health is that, should sufficient iodine be lacking in the body, i.e., iodine deficiency, other halogens can gain entry into the thyroid gland.

While a polychlorinated biphenyl (PCB) molecule may be recognized as an iodinated compound, it certainly doesn't act like an iodinated compound once it's in the thyroid's cells and can disrupt thyroid function (Porterfield 1998). Another group of chlorine-containing compounds, perchlorates, that contaminate groundwater and are found as pesticide residues in produce, are extremely potent thyroid-blockers (Greer 2002). Likewise, bromine-containing compounds, such as polybrominated diphenyl ethers (PBDEs), widely used as flame retardants, also disrupt thyroid function (Zhou 2001). Perfluorooctanoic acid (PFOA), found in Teflon non-stick cookware and stain-resistant products,  has been associated with thyroid dysfunction (Melzer 2010). PFOA, incidentally, can disrupt thyroid dysfunction that will not show up in the TSH test used by primary care physicians and endocrinologists to screen for thyroid dysfunction. (In fact, the presumed champions of thyroid health, the endocrinology community, have proven a miserable failure in translating and implementing the findings from  toxicological science findings to that of preserving or restoring thyroid health. They have largely chosen to ignore it.)

We therefore navigate through a world teeming with halogenated thyroid blocking compounds. We should all therefore avoid such exposures as perchlorates in produce by rinsing thoroughly or purchasing organic, avoid non-stick cookware, avoid use or exposure to pesticides and herbicides.

Another crucial means to block the entry of various halogenated compounds into your vulnerable thyroid: Be sure you are getting sufficient iodine. While it doesn't make your thyroid impervious to injury, iodine circulating in the blood in sufficient quantities and residing in sufficient stores in the thyroid gland provides at least partial protection from the halogenated impostors in your life.

I make this point in the context of heart disease prevention, since even the most subtle degrees of thyroid dysfunction can easily double, triple, or quadruple heart disease risk. See related posts, Is normal TSH too high? and Thyroid perspective update.

Lipitor-ologist

22. September 2010 William Davis (30)
One of the things I do in practice is consult in complex hyperlipidemias, the collection of lipoprotein disorders that usually, but not always, lead to atherosclerosis.

First order of business: Make the diagnosis--familial combined hyperlipidemia, hypoalphalipoproteinemia, lipoprotein(a), familial heterozygous hypercholesterolemia, familial hypertriglyceridemia, hyperapoprotein B with metabolic syndrome, etc. These are the disorders that start with a genetic variant, e.g., a missing or dysfunctional enzyme or signal protein, such as lipoprotein lipase or apo C3.

I then ask: What can be done that is easy and safe and preferably related to diet and lifestyle?

By following an effective diet, many of these abnormalities can be dramatically corrected, sometimes completely. Familial hypertriglyceridemia, for instance, an inherited disorder of lipoprotein lipase in which triglyceride levels can exceed 1000 mg/dl, high enough to cause pancreatic damage, responds incredibly well to carbohydrate restriction and over-the-counter fish oil. I have a number of these people who enjoy triglyceride levels below 100 mg/dl--unheard of in conventionally treated people with this disorder.

Then why is it that, time after time, I see these people in consult, often as second or third opinions from lipidologists (presumed lipid specialists) or cardiologists, when the only solutions offered are 1) Lipitor or other statin drug, and 2) a low-fat diet? Occasionally, an aggressive lipidologist might offer niacin, a fibrate drug (Tricor or fenofibrate), or Lovaza (prescription fish oil).

Sadly, the world of lipid disorders has been reduced to prescribing a statin drug and little else, 9 times out of 10.

I don't mean to rant, but I continue to be shocked at the incredible influence the drug industry has over not just prescribing patterns, but thinking patterns. Perhaps I should say non-thinking patterns. The drugs make it too easy to feel like the doctor is doing something when, in truth, they are doing the minimum (at best) and missing an opportunity to provide true health-empowering advice that is far more likely to yield maximum control over these patterns with little to no medication.

All in all, I am grateful that there is a growing discipline of "lipidology," a specialty devoted to diagnosing and treating hyperlipidemias. Unfortunately, much of the education of the lipidologist is too heavily influenced by the pharmaceutical industry. Not surprisingly, the drug people favor "education" that highlights their high-revenue products.

Seeing a lipidologist is still better than seeing most primary care physicians or cardiologists. Just beware that you might be walking into the hands of someone who is simply the unwitting puppet of the pharmaceutical industry.

Robb Wolf's new Paleo Solution

20. September 2010 William Davis (16)
The Paleo Solution: The Original Human Diet


The Paleo Solution: The Original Human Diet

I have to say: I'm impressed. If you would like insight into why a "Paleo" nutritional approach works on a biochemical level--why you lose weight, burn fat, and gain overall better health--then Robb's book is worth devoting a few hours to, of not a reread or two.

Robb has a particular knack for organizing and presenting information in a way that makes it immediately accessible. You will gain an appreciation for how far American nutritional habits have veered off course.

Because Robb brings expertise from his academic biochemistry background, as well as personal trainer and educator running a successful gym in northern California, NorCal Strength and Conditioning, he delivers a book packed with information that is extremely easy to convert to immediate action in health and exercise. He seems to anticipate all the little problems and objections that people come up with along the way, dealing with them in his characteristic lighthearted way, providing practical, rational solutions.

Robb's book nicely complements what Dr. Loren Cordain has written in his The Paleo Diet: Lose Weight and Get Healthy by Eating the Food You Were Designed to Eat and The Paleo Diet for Athletes: A Nutritional Formula for Peak Athletic Performance. (My wife is now reading The Paleo Diet for Athletes and loves it. I'm going to add Robb's book to her reading list for her to read next.)

If nutrition has you stumped, if the USDA food pyramid still sounds like a reasonable path, or if you just would like to understand nutrition a little bitter, especially its biochemical ins and outs, Robb's book is a wonderful place to start.

Human foie gras

18. September 2010 William Davis (10)
If you want to make foie gras, you feed ducks and geese copious quantities of grains, such as corn and wheat.

The carbohydrate-rich diet causes fat deposition in the liver via processes such as de novo lipogenesis, the conversion of carbohydrates to triglycerides. Ducks and geese are particularly good at this, since they store plentiful fats in the liver to draw from during sustained periods of not eating during annual migration.

Modern humans are trying awfully hard to create their own version of foie gras-yielding livers. While nobody is shoving a tube down our gullets, the modern lifestyle of grotesque carbohydrate overconsumption, like soft drinks, chips, pretzels, crackers, and--yes--"healthy whole grains" causes fat accumulation in the human liver.

Over the past few years, there has been an explosion of non-alcoholic fatty liver disease and non-alcoholic steatosis, two forms of liver disease that result from excess fat deposition. The situation gets so bad in some people that it progresses to cirrhosis, i.e., a hard, poorly-functioning liver that paints a very ugly health picture. The end-result is identical to that experienced by longstanding alcoholics.



While Hannibal Lecter might celebrate the proliferation of human fatty livers with a glass of claret, fatty liver disease is an entirely preventable condition. All it requires is not eating the foods that create it in the first place.

Let go of my love handles

14. September 2010 William Davis (44)
When is fat not just fat?

When it's visceral fat. Visceral fat is the fat that infiltrates the intestinal lining, the liver, kidneys, even your heart. It's the stuff of love handles, the flabby fat that hangs over your belt, or what I call "wheat belly."

Unlike visceral fat, the fat in your thighs or bottom is metabolically quiescent. Thigh and bottom fat may prevent you from fitting into your "skinny jeans," but its mainly a passive repository for excess calories.

Visceral fat, on the other hand, is metabolically active. It produces large quantities of inflammatory signals ("cytokines"), such as various interleukins, leptin, and tumor necrosis factor, that can trigger inflammatory responses in other parts of the body. Visceral fat also oddly fails to produce the protective cytokine, adiponectin, that protects us from diabetes, cancer, and heart disease.

Visceral fat also allows free fatty acids to leave and enter fat cells, resulting in a flood of fatty acids and triglycerides (= 3 fatty acids on a glycerol "backbone") in the bloodstream. This worsens insulin responses ("insulin resistance") and contributes to fatty liver. The situation is worsened when the very powerful process of de novo lipogenesis is triggered, the liver's conversion of sugar to triglycerides.

Visceral fat is also itself inflamed. Biopsies of visceral fat show plenty of inflammatory white blood cells (macrophages) infiltrating its structure.

So what causes visceral fat? Anything that triggers abnormal increases in blood glucose, followed by insulin, will cause visceral fat to grow.

It follows logically that foods that increase blood glucose the most will thereby trigger the greatest increase in visceral fat. Eggs don't lead to visceral fat, nor do salmon, olive oil, beef, broccoli, or almonds. But wheat, cornstarch, potato starch, rice starch, tapioca starch, and sugars will all trigger glucose-insulin that leads to visceral fat accumulation.

Fructose is also an extravagant trigger of visceral fat. Fructose is found in sucrose (50% fructose), high-fructose corn syrup, agave syrup, maple syrup, and honey.

Increased visceral fat can be suggested by increased waist circumference. The inflammatory hotbed created by excess visceral fat has therefore been associated with increased likelihood of heart attack, cardiovascular mortality, diabetes, cancer, and total mortality.

So I'm not so worried that you can't squeeze your bottom into your size 8 jeans. I am worried, however, when you need to let your belt out a notch . . . or two or three.

Surviving a widow maker

11. September 2010 William Davis (19)
Gwen came to me 5 years ago. In her late 60s, she'd been having feelings of chest pressure for the past 4 weeks with small physical efforts, such as climbing a flight of stairs or lifting her grandchildren.

She sat in my office, heaving small sobs, accompanied by her daughter.

Gwen had already undergone a heart catheterization at a hospital near home by a cardiologist who I knew to be honest and competent. She'd been told that she had a 90% stenosis ("blockage") of her proximal left anterior descending (LAD) coronary artery. He called it a "widow maker," since closure of the artery at this point can be fatal within minutes. He advised bypass surgery as soon as possible. Though a stent could be placed at this location, he felt that its proximity to the left main stem (i.e., the "trunk" that divides into the LAD and circumflex arteries) might be jeopardized by expanding a stent in this bulky plaque, what I felt was a reasonable concern.

I reviewed the images that she brought with her. Yes, indeed: a widow maker. The portion of the left ventricle (heart muscle) fed by the LAD was also impaired ("hypokinetic"), reflecting reduced flow through the artery.

I advised Gwen that her first cardiologist's advice was sound: This was a potentially dangerous and severe condition. Either a bypass or stent should be performed near-future, the less delay the better.

But Gwen and her daughter would have no talk of any more procedures. She'd come to me because she heard about the (then rudimentary) effort I'd been making at reversing coronary plaque. "I admire your commitment, Gwen, but I am concerned that there may not be sufficient time to implement a program of prevention or reversal. Prevention is very powerful, but very slow. When symptoms like yours are active, also, it can mean that we won't have full control over the plaque causing the symptoms. This risks closure of the vessel, since flow characteristics in the plaque are abnormal. I think that you should go through a stent or bypass. We can then start your prevention/reversal program once we know you're safe."

Gwen would still have none of it. I asked her to return in a few days after thinking it over. In the meantime, we drew her lipoprotein blood samples while she added fish oil, l-arginine (back then I used a lot of l-arginine for its endothelial health effects), and began the Track Your Plaque diet a la 2004. This was in addition to the aspirin, beta blocker, and statin prescribed by the first cardiologist.

Several days later, Gwen and her daughter returned, as committed as ever to not having a procedure and proceeding with our prevention/reversal efforts.

So off we went. I was nervous about Gwen's safety, but she had clearly made her mind made up. Gwen's lipoprotein analysis revealed a severe small LDL pattern along with markers for prediabetes (high insulin, high blood glucose, hypertension, along with the loose tummy of visceral fat). So I counseled her intensively in diet and added niacin.

Within 2 weeks, Gwen no longer had chest pain. Whether this was due to her efforts or to some resolution of an intraplaque phenomenon (e.g., resorption of internal plaque hemorrhage), I don't know. But her symptoms did not return.

As the program evolved, we added the new strategies along the way--vitamin D supplementation; elimination of all wheat along with other changes in diet; iodine and thyroid normalization; as well as discontinuing l-arginine after the initial two years. She also got rid of the statin drug after losing around 20 lbs on the diet.

It's now been six years with her "widow maker" and Gwen has been fine: no recurrence of her symptoms, all stress tests performed have been normal, reflecting normal blood flow in her coronary arteries.

Should ALL people with symptomatic widow makers undergo such an effort and avoid procedures? No, not yet. Prevention and reversal efforts are indeed powerful, but slow. Some people just may not have sufficient time to accomplish what Gwen did. The fact that Gwen showed evidence for reduced flow in the LAD worried me in particular. There is no question that mortality benefits for stenting or bypass of this location are not as large as previously thought (see here, for instance), but each case needs to be viewed individually, factoring in flow characteristics in the artery, appearance of "stability" or "instability" of the plaque itself, not to mention commitment of the person.

But it can be done.

Fred Hahn's Slow Burn

8. September 2010 William Davis (166)
I just had a workout with personal trainer and fitness expert, Fred Hahn. After a workout that quickly taught me that I had a lot to learn about exercise and strength training, Fred and I had a nice low-carbohydrate dinner at a Manhattan restaurant and shared ideas.

Fred is coauthor of Slow Burn Fitness Revolution: The slow motion exercise that will change your body in 30 minutes a week, written in collaboration with the Drs. Eades, Michael and Mary Dan. Fred also blogs here.

I had heard about Fred's "slow-burn" concept in past, but made little of it. I then met Fred on Jimmy Moore's low-carb cruise this past year, where I gave a talk on how carbohydrate-reduced diets reduce small LDL particles. Fred provided a group demonstration on his slow-burn techniques. I watched the demonstration, even tried it a few times back home in the gym, but never really applied them, losing patience most of the time and just going back to my usual routine.

Well, Fred showed me today how to do his slow-burn. In a nutshell, it is the slow, methodical use of weight resistance until the muscle is exhausted. It involves slow movement--e.g., 5 seconds for a lat pulldown from top to bottom--repeated until exhaustion using a weight that allows, perhaps, 6 repetitions over a 60-second effort.

I've been strength training since I was a teenager. I've seen lots of bad training techniques, injuries, and hocum when it comes to how to use resistance training techniques. But I believe that Fred Hahn's slow-burn technique really provides something unique that I hadn't experienced before.

For one, the burn is nothing like I've felt before. Two, there appears to be nearly zero risk for injury, since the usual momentum-driven, herky-jerky motion often employed with weight machines is entirely gone. Three, if what Fred is seeing is true--enhanced visceral (abdominal) fat loss, reduced blood glucose, increased HDL, decreased LDL/total cholesterol--then there's something really interesting going on here.

I also discovered that Fred is no ordinary personal trainer. He has insights into metabolism that I found truly impressive. After all, he's been hanging around with Mike Eades, who's a pretty sharp guy. What Mike Eades is to metabolic insights is what Fred Hahn is to exercise physiology.

I'm going to take Fred's slow burn training insights home with me. I'll let you know how it goes. Some aspects I'd like to explore: Will strength, muscle mass, and blood sugar responses change?



Fred Hahn's latest book, adapting slow burn techniques for kids.