What do Salmonella, E coli, and bread have in common?

Say you happen to eat some chicken fingers contaminated with bacteria because the 19-year old kid behind the counter failed to wash his hands after using the toilet, or because the kitchen is poorly managed with unwashed counters and cutting boards, or because the food is undercooked. You get a bout of diarrhea and cramps, along with a desire to banish chicken from your life.

Here's yet another odd wheat phenomenon: About 30% of people who eliminate wheat from their lives experience an acute food poisoning-like effect on re-exposure. You've been wheat-free for, say, 6 months. You've lost 25 lbs from your wheat belly, you've regained energy, joints feel better. You go to an office party where they're serving some really yummy looking bruschetta. Surely a couple won't hurt! Within a hour, you're getting that awful rumbling and unease that precede the explosion.

The majority of people who experience a wheat re-exposure syndrome will have diarrhea and cramps that can last from hours to days, similar to food poisoning. (Why? Why would a common food trigger a food poisoning-like effect? It happens too fast to attribute to inflammation.) Others experience asthma attacks, joint pains that last 48 hours to a week, mental fogginess, emotional distress, even rage (in males).

Wheat re-exposure in the susceptible provides a tidy demonstration of the effects of this peculiar product of genetic research. So if you are wheat-free but entertain an occasional indulgence, don't be surprised if you have to make a beeline to the toilet.

The world of intermediate carbohydrates

There are clear-cut bad carbohydrates: wheat, oats, cornstarch, and sucrose. (Fructose, too, but in a class of bad all its own.)

Wheat: The worst. Not only does wheat flour increase blood sugar higher than nearly all other carbohydrates, it invites celiac disease, neurologic impairment, mental and emotional effects, addictive (i.e., exorphin) effects, asthma, irritable bowel syndrome, acid reflux, sleepiness, sleep disruption, arthritis . . . just to name a few.

Oats: Yeah, yeah, I know: "Lowers cholesterol." But nobody told you that oats, including slow-cooked oatmeal, causes blood sugar to skyrocket.

Cornstarch: Like wheat, cornstarch flagrantly increases blood sugar.It also stimulates appetite. That's why food manufacturers put it in everything from soups to frozen dinners.

Sucrose: Not only does sucrose create a desire for more food, it is also 50% fructose, the peculiar sugar that makes us fat, increases small LDL particles, increases triglycerides, slows the metabolism of other foods, encourages diabetes, and causes more glycation than any other sugar.

But there are a large world of "other" natural carbohydrates that don't fall into the really bad category. This includes starchy beans like black, kidney, and pinto; rices such as white, brown, and wild; potatoes, including white, red, sweet, and yams; and fruits. It includes "alternative" grains like quinoa, spelt, triticale, amaranth, and barley.

For lack of a better term, I call these "intermediate" carbohydrates. They are not as bad as wheat, etc., but nor are they good. They will still increase blood glucose, small LDL, triglycerides, etc., just not as much as the worst carbohydrates.

The difference is relative. Say we compare the one-hour blood glucose effects of 1 cup of wheat flour product vs. one cup of quinoa. Typical blood sugar after wheat product: 180 mg/dl. Typical blood sugar after quinoa: 160 mg/dl--better but still pretty bad.

Some people are so carb-sensitive that they should avoid even these so-called intermediate carbohydrates. Others can have small indulgences, e.g., 1/2 cup, and not generate high blood sugars.

Heroin, Oxycontin, and a whole wheat bagel

For a substantial proportion of people who remove wheat from their diet, there is a distinct and unpleasant withdrawal syndrome. Here are the comments of Heart Scan Blog reader, Scott, from Texas:

Hello Dr. Davis,

I've been experimenting with diet, converging upon a Paleo type diet, but I keep running into problems. I have isolated the problem to cutting out wheat.

Sugar, rice, fruit, corn, potatoes, etc. are relatively ok to add or remove from the diet, but cutting out wheat in particular brings on a moderate headache with heavy fatigue all day long. This resembles the wheat withdrawal symptoms I found on your blog. As I write this, I'm on day 8 of wheat-free. I consume a fair variety of meat and veggies each day with a moderate amount of white rice for carbs. Perhaps a bowl of corn flakes with milk and half a bar of dark chocolate a day. I've learned from experience over the past 5 months or so that none of these foods affect the withdrawal. It's purely wheat.

My question is, what is the range of times for withdrawal symptoms that you've heard from different people? Has there been anyone who never recovered from the wheat withdrawal symptoms even after many months?

It's very tough to get work done like this, and even though my body and head feel much healthier in general, my sinuses have cleared, don't have to take a big nap after I eat, etc., I don't want to go down a path where this is the way things are going to be forever. 



People who have never experienced wheat withdrawal pooh-pooh the effect. But, for about 30% of people, wheat withdrawal is a real, palpable, and sometimes incapacitating experience.

Beyond removing an exceptionally digestible carbohydrate that yields blood sugar rises higher than nearly any other known food (due to the unique amylopectin structure of wheat-derived carbohydrate), wheat withdrawal is a form of opiate withdrawal, somewhat like stopping heroin, Oxycontin, and other opiates. Stop eating whole wheat toast for breakfast, whole grain sandwiches for lunch, or whole grain pasta for dinner, and the flow of exorphins, i.e., exogenous morphine-like compounds, stops. You experience dysphoria (sadness, unhappiness), mental "fog," inability to concentrate, fatigue, and decreased capacity to exercise. It is milder than withdrawal from prescription opiates. Unlike withdrawal from more powerful opiates like heroine, there are, thankfully, no seizures or hallucinations. There are also no deaths.

In my experience, most people get through with wheat withdrawal in about 5 days. An occasional person will struggle for as long as 4 weeks. Thankfully for Scott, I've never seen it last longer than 4 weeks. (Interestingly, people who survive the withdrawal syndrome are often prone to a peculiar re-exposure phenomenon that I will discuss in future, i.e., they get sick upon re-exposure.)

The modern dwarf mutant variant of Triticum aestivum (that our USDA urges us to eat more of) contains greater proportions of gluten proteins compared to wheat pre-1970; glutens are the source of wheat-derived exorphins.

Incidentally, a drug company should be releasing a drug in the next year that will contain naltrexone, an oral opiate blocking drug, for a weight loss indication. They claim it is a blocker of the "mesolimbic reward system." I say it's a blocker of wheat exorphins.

The five most powerful heart disease prevention strategies

You've seen such lists before: 5 steps to prevent heart disease or some such thing. These lists usually say things like "cut your saturated fat," eat a "balanced diet" (whatever the heck that means), exercise, and don't smoke.

I would offer a different list. You already know that smoking is a supremely idiotic habit, so I won't repeat that. Here are the 5 most important strategies I know of that help you prevent heart disease and heart attack:

1) Eliminate wheat from the diet--Provided you don't do something stupid, like allow M&M's, Coca Cola, and corn chips to dominate your diet, elimination of wheat is an enormously effective means to reduce small LDL particles, reduce triglycerides, increase HDL, reduce inflammatory measures like c-reactive protein, lose weight (inflammation-driving visceral fat), reduce blood sugar, and reduce blood pressure. I know of no other single dietary strategy that packs as much punch. This has become even more true over the past 20 years, ever since the dwarf variant of modern wheat has come to dominate.

2) Achieve a desirable 25-hydroxy vitamin D level--Contrary to the inane comments of the Institute of Medicine, vitamin D supplementation increases HDL, reduces small LDL, normalizes insulin and reduces blood sugar, reduces blood pressure, and exerts potent anti-inflammatory effects on c-reactive protein, matrix metalloproteinase, and other inflammmatory mediators. While we also have drugs that mimic some of these effects, vitamin D does so without side-effects.

3) Supplement omega-3 fatty acids from fish oil--Omega-3 fatty acids reduce triglycerides, accelerate postprandial (after-meal) clearance of lipoprotein byproducts like chylomicron remnants, and have a physical stabilizing effect on atherosclerotic plaque.

4) Normalize thyroid function--Start with obtaining sufficient iodine. Iodine is not optional; it is an essential trace mineral to maintain normal thyroid function, protect the thyroid from the hundreds of thyroid disrupters in our environment (e.g., perchlorates from fertilizer residues in produce), as well as other functions such as anti-bacterial effects. Thyroid dysfunction is epidemic; correction of subtle degrees of hypothyroidism reduces LDL, reduces triglycerides, reduces small LDL, facilitates weight loss, reduces blood pressure, normalizes endothelial responses, and reduces oxidized LDL particles.

5) Make exercise fun--Not just exercise for the sake of exercise, but physical activity or exercise for the sake of having a good time. It's the difference between resigning yourself to 30 minutes of torture and boredom on the treadmill versus engaging in an activity you enjoy and look forward to: go dancing, walk with a friend, organize a paintball tournament outdoors, Zumba class, plant a new garden, etc. It's a distinction that spells the difference between finding every excuse not to do it, compared to making time for it because you enjoy it.

Note what is not on the list: cut your fat, eat more "healthy whole grains," take a cholesterol drug, take aspirin. That's the list you'd follow if you feel your hospital needs your $100,000 contribution, otherwise known as coronary bypass surgery.

Topping up your vitamin D tank

Now that my vitamin D replacement experience dates back nearly 5 years, I've been witnessing an unusual phenomenon:

The longer you take vitamin D, the less you need.

Let me explain. You take 10,000 units D3 in gelcap form. 25-hydroxy vitamin D levels, checked every 6 months, have remained consistently between 60 and 70 ng/ml. Three years into your vitamin D experience and 25-hydroxy vitamin D level rises to 98 ng/ml--an apparent need for less vitamin D.

So we cut your intake from 10,000 units per day to 8000 units per day. Another 25-hydroxy vitamin D level 6 months later: 94 ng/ml. We cut dose again to 6000 units, followed by another 25-hydroxy vitamin D level of 66 ng/ml.

This has now happened in approximately 20% of the people who have been taking vitamin D for 3 or more years. I know of no formal analysis of this effect, what I call the "topping up" phenomenon. Reasoned simply, it seems to me that, once your vitamin D "tank" is topped up (i.e., tissue stores have been replenished), it requires less to keep it full.

No one has experienced any adverse consequence of this topping up effect though it has potential for some people to develop toxic levels if 25-hydroxy vitamin D levels are not monitored long-term. In my office, I measure 25-hydroxy vitamin D levels every 6 months.

It means that long-term monitoring of 25-hydroxy vitamin D is crucial to maintain favorable and safe levels.

Thirteen catheterizations later

When I first met her, Janet couldn't stop sobbing. She'd just been through her 10th heart catheterization in two years.

It started with chest pains at age 56, prompting her first heart catheterization that uncovered severe atherosclerotic blockages in all three coronary arteries. Her cardiologist advised a bypass operation.

Six months after the bypass operation, Janet was back with more chest pains, just as bad as before. Another heart catherization showed that two of the three bypass grafts had failed. The third bypass graft contained a severe blockage that required a stent, along with multiple stents in the two now unbypassed arteries.

In the ensuing 18 months, Janet returned for 8 additional catheterizations, each time leaving the hospital with one or more stents.

Janet's doctor was puzzled as to why her disease was progressing so aggressively despite Lipitor and the low-fat diet provided by the hospital dietitian. So he had Janet undergo lipoprotein testing (NMR):

LDL particle number: 3363 nmol/L
Small LDL particle number: 2865 nmol/L
HDL cholesterol: 32 mg/dl
Triglycerides: 344 mg/dl
Fasting blood glucose 118 mg/dl
HbA1c 5.8%

Unfortunately, Janet's doctor didn't understand what these values meant. He pretty much threw his arms up in frustration. That's when I met Janet.

From her lipoprotein panel and other values, it was clear to me that Janet was miserably carbohydrate-sensitive and carbohydrate-indulgent, as demonstrated by the extravagant quantity (2865 nmol/L) and proportion (2865/3363, or 85%) of small LDL, the form of LDL particles created by carbohydrate exposure. Janet struggled with depression over the years and had been using carbohydrate foods as "comfort" foods, often resorting to cookies, pies, cakes, breads, and other wheat-containing foods for emotional solace.

It took a bit of persuasion to convince Janet that it was low-fat, "healthy whole grains," as well as comfort foods, that had led her down this path. I also helped Janet correct her severe vitamin D deficiency, mild thyroid dysfunction, and lack of omega-3 fatty acids.

Since meeting Janet and instituting her new prevention program, she has undergone three additional catheterizations (performed by another cardiologist), all performed for chest pain symptoms that struck during periods of emotional stress. All showed . . . no significant blockage. (Apparently, the repeated "need" for stents triggered a Pavlovian response: chest pain = "need" for yet more stents.)

In short, correction of the causes of coronary atherosclerotic plaque--small LDL, vitamin D deficiency, omega-3 fatty acid deficiency, and thyroid dysfunction--and Janet's disease essentially ground to a halt.

Imagine, instead, that Janet had undergone 1) a heart scan to identify hidden coronary plaque 5-10 years before her first heart procedure, then 2) corrected the causes before they triggered symptoms and posed danger. She might have been spared an extraordinary amount of life crises, hospital procedures, expense (nearly $1 million), and emotional suffering.

High blood pressure vanquished

Heart Scan Blog reader, Eric, related his blood pressure success story to me:

I'm 34 and have been battling chronic hypertension (systolic 150-200, depending on my anxiety levels) even with multiple prescriptions for over a decade now. I've seen four different cardiologists, all stumped as to what is causing my hypertension. First, they suspected coarctation of my aorta [a constriction in the aorta], but an angiogram determined blood pressure readings were the same on both sides of the narrowing.

The second angiogram performed last year to determine if my coarct had worsened determined that it had not, but that my aorta had calcium build up. The cardiologist was stumped because he told me he hasn't seen calcium in a patient so young. Needless to say, this scared me to death, with my wife being pregnant with our first child. I asked if it could be reversed and he didn't know so he sent me to get a Berkeley lab.

The Berkeley came back with LDL 91, HDL 41, Triglycerides 73, CRP 4.1, vit D 26. The doctors weren't very knowledgeable about explaining to me what these meant and how I could correct the low vit D and high CRP. They told me to follow the low-fat diet recommended by Berkeley. Well I've already tried the DASH diet and didn't like how I felt or my energy levels, so I didn't transition.

I was at a loss until I encountered your blog and it was truly a gift. It was a refreshing feeling to meet a knowledgeable Dr. who knew what I was going through and seems to truly care about reversing calcium in the heart (something I never got from my any of my cardiologists). With your blog I have an appointment to get a heart scan here in CO and take that number along with my Berkeley results and join Track Your Plaque.

For the past 2 weeks I've been following your advice by taking a D3+K2 supplement with Omega3 Fish oil and avoiding all grain, wheat, sugar and I'm already down 4lbs to 223.5lbs at 6'5" tall and my blood pressure readings have been 128/54 and 129/60 the past 2 days! With your help I may not have the dark future my father had: dead at 48 with a massive heart attack.

Stay on the look out because I look forward to telling you how I'm one of your top calcium losers!

Eric, Colorado


Conventional medical care fails at so many levels for so many people. While Eric's doctors were busy contemplating the next angiogram, they were neglecting several crucial aspects of his health.

It's really not that tough. But it can mean doing the opposite of what conventional "wisdom" tell us.

DHEA and Lp(a)

DHEA supplementation is among my favorite ways to deal with the often-difficult lipoprotein(a), Lp(a).

DHEA is a testosterone-like adrenal hormone that declines with age, such that a typical 70-year old has blood levels around 10% that of a youthful person. DHEA is responsible for physical vigor, strength, libido, and stamina. It also keeps a lid on Lp(a).

While the effect is modest, DHEA is among the most consistent for obtaining reductions in Lp(a). A typical response would be a drop in Lp(a) from 200 nmol/L to 180 nmol/L, or 50 mg/dl to 42 mg/dl--not big responses, but very consistent responses. While there are plenty of non-responders to, say, testosterone (males), DHEA somehow escapes this inconsistency.

Rarely will DHEA be sufficient as a sole treatment for increased Lp(a), however. It is more helpful as an adjunct, e.g., to high-dose fish oil (now our number one strategy for Lp(a) control in the Track Your Plaque program), or niacin.

Because the "usual" 50 mg dose makes a lot of people bossy and aggressive, I now advise people to start with 10 mg. We then increase gradually over time to higher doses, provided the edginess and bossiness don't creep out.

The data documenting the Lp(a)-reducing effect of DHEA are limited, such as this University of Pennsylvania study, but in my real life experience in over 300 people with Lp(a), I can tell you it works.

And don't be scared by the horror stories of 10+ years ago when DHEA was thought to be a "fountain of youth," prompting some to take megadose DHEA of 1000-3000 mg per day. Like any hormone taken in supraphysiologic doses, weird stuff happens. In the case of DHEA, people become hyperaggressive, women grow mustaches and develop deep voices. DHEA doses used for Lp(a) are physiologic doses within the range ordinarily experienced by youthful humans.

No more cookies

Jeanne enjoyed her Christmas holidays. She especially liked sharing the cookies she made for her grandchildren, sneaking 2 or 3 every day over a couple of weeks. On top of this, she enjoyed the Christmas candy, egg nog, leftover stuffing and cranberry sauce, topped off with a night of nutritional debauchery on New Year's Eve.

Lipid panel in October:

Total cholesterol 146 mg/dl
LDL cholesterol 72 mg/dl
HDL cholesterol 64 mg/dl
Triglycerides 49 mg/dl

Lipid panel in early January:

Total cholesterol 229 mg/dl
LDL cholesterol 141 mg/dl
HDL cholesterol 59 mg/dl
Triglycerides 147 mg/dl


I call the holidays The Annual Wheat and Sugar Frenzy. It's the carbohydrates, especially those from products made of wheat and sucrose, that caused the marked shifts in Jeanne's lipid patterns. Let's take each parameter apart:

--Triglycerides go up due to de novo lipogenesis, liver conversion of carbohydrates into triglycerides. Triglycerides enter the bloodstream as VLDL particles which, in turn, interact with LDL and HDL.

--LDL goes up because carbohydrate exposure increases VLDL, followed by conversion to LDL. The triglyceride-rich LDL created is converted to small LDL particles. Had we measured small LDL changes in Jeanne, we likely would have measured something like an increase (by NMR) from 800 nmol/L to 1600 nmol/L, a carbohydrate effect.

--The increased VLDL also makes HDL triglyceride-rich, cause more rapid degradation of HDL particles. (It also makes them smaller, like LDL.) Given sufficient time (a few more months), HDL would drop into the 40's.

--Total cholesterol changes reflect the composite of the above numbers. (Total cholesterol = LDL cholesterol + HDL cholesterol + Trig/5) (Note that, as HDL drops, so will total cholesterol; that's why this value is worthless and should be ignored.)

So don't be surprised by the above distortions after a period of carbohydrate indulgence. Although your unwitting primary care doc will see such changes as opportunity for Lipitor, it is nothing more than the cascade of effects from a carbohydrate-driven distortion of lipoproteins.

How to become diabetic in 5 easy steps

If you would like to become diabetic in as short a time as possible, or if you have someone you don't like--ex-spouse, nasty neighbor, cranky mother-in-law--whose health you'd like to booby trap, then here's an easy-to-follow 5-step plan to make you or your target diabetic.


1) Cut your fat and eat healthy, whole grains--Yes, reduce satiety-inducing foods and replace the calories with appetite-increasing foods, such as whole grain bread, that skyrocket blood sugar higher than a candy bar.

2) Consume one or more servings of juice or soda per day--The fructose from the sucrose or high-fructose corn syrup will grow visceral fat and cultivate resistance to insulin.

3) Follow the Institute of Medicine's advice on vitamin D--Take no more than 600 units vitamin D per day. This will allow abnormal levels of insulin resistance to persist, driving up blood sugar, grow visceral fat, and allow abnormal inflammatory phenomena to persist.

4) Have a bowl of oatmeal or oat cereal every morning--Because oat products skyrocket blood sugar, the repeated high sugars will damage the pancreatic beta cells ("glucose toxicity"), eventually impairing pancreatic insulin production. (Entice your target even further: "Would you like a little honey with your oatmeal?") To make your diabetes-creating breakfast concoction even more effective, make the oatmeal using bottled water. Many popular bottled waters, like Coca Cola's Dasani or Pepsi's Aquafina, are filtered waters. This means they are devoid of magnesium, a mineral important for regulating insulin responses.

5) Take a diuretic (like hydrochlorothiazide, or HCTZ) or beta blocker (like metoprolol or atenolol) for blood pressure--Likelihood of diabetes increases 30% with these common blood pressure agents.

There you have it! Perhaps we should assemble a convenient do-it-yourself-at-home diabetes kit to help, complete with several servings of whole grain bread, a big bottle of cranberry juice, some 600 unit vitamin D tablets, a container of Irish oatmeal, and some nice bottled water.
What does "Success" mean in the Track Your Plaque program?

What does "Success" mean in the Track Your Plaque program?

Say you begin with a CT heart scan score of 400.

You correct your lipoprotein pattterns, take fish oil, correct 25-OH-vitamin D3 to 50 ng/ml, correct your other hidden patterns, follow a diet suited to your patterns.

One year later, you get another heart scan. What score would constitute "success"?

With all of our recent talk about record-setting reductions in heart scan scores, is it really necessary to drop your score that much to succeed?

For instance, is our latest record-setting 63% drop in score better than "only" a 10% drop in score? Both represent reversal of coronary plaque. Both signify huge reductions in risk for plaque rupture, or heart attack.

You can read about how we view the various forms of success in the program by reading our latest Track Your Plaque Special Report, Winning Your Personal War with Heart Disease: The Track Your Plaque 5 Stages of Success.

We are making the Report available to everyone. Just go to the www.cureality.com homepage.

Comments (11) -

  • WCCAguy

    10/2/2007 11:22:00 AM |

    Hi Dr. Davis,

    This post touches on a point I've been wondering about.

    You write that a drop in CT heart scan score signifies a "huge reduction in risk for plaque rupture, or heart attack."

    As I understand it, strictly speaking, the score indicates a reduction in the volume of calcium/plaque in the arteries.

    In your books and articles you provide references to the studies which document the statistical correlation between FIXED scores and rupture/heart attack.

    My question is this (and you may have answered this question already elsewhere):  Have there been studies that document a statistically significant relationship between a reduction in plaque volume (as opposed to a fixed value) and risk of a CAD event?

    A follow up question:  Is the actual reason for the risk reduction due to score reduction actually known?  I can imagine that one reason might be that because the arteries have plaque reduced, they are actually larger in terms of blood flow supported than they were before the plaque was reduced.

    My belief, however, is that there could be additional reasons for a reduced plaque over time = less risk correlation.

    Thoughts about this?

    Thanks.

  • Dr. Davis

    10/2/2007 12:13:00 PM |

    Great questions.

    We do know that, if plaque is permitted to grow (by several measures including angiographic studies, carotid ultrasound, as well as heart scan scores), the likelihood of events escalates along with it. This is known with absolute confidence.  

    We also know that reductions in plaque burden are also correlated with reductions in risk, also by just about any measure, though the magnitude of reduction varies, since each approach provides a different persective on plaque composition, all differ on incorporation of the Glagov phenomenon ("remodeling"). More data on event reductions are needed, however. But until recently, genuine bona fide reversal had been elusive.

    Lastly, actual examination of tissue that has regressed is very limited. As you can imagine, if someone asked you, having regressed, to allow a sample of artery tissue to be removed, you'd likely not be interested. Thus, the observations are indirect and come from animal studies and observations like intracoronary ultrasound.

    Actually, reductions in heart scan scores are a surrogate for inactivation of plaque, removal of inflammatory cells, removal of fat-laden tissue, etc. The reduction  in calcium is a parallel phenomenon that we can see. I also wonder, given the wonderful effects of vit D and possibly K2, whether the reduction in calcium provides benefits of its own, independent of the inactivating effects.

  • Anonymous

    10/3/2007 3:56:00 AM |

    While everyone agrees that reduction of atherosclerotic plaque is a good thing, there are several clinical studies that suggest that reduction of calcium in the plaque may not be good. For example, this study found that culprit stenoses in arteries of patients with stable angina had more calcium than those of patients with unstable angina, which had more calcium than those with acute myocardial infarction. This suggests that plaque accumulation in a specific location may actually be beneficial if it stabilizes the plaque and makes it less likely to rupture.

    There is not much data on calcium score reduction because it is so rarely seen. What is needed are long-term studies showing that calcium score reduction does reduce the number of adverse coronary events.

  • Dr. Davis

    10/3/2007 11:53:00 AM |

    I disagree.

    There is a commonly offered argument that calcium stabilizes plaque. I think this is nonsense. There are studies by Renu Virmani and others that demonstrate that the shear and tension forces at the edges of calcified plaque are, in fact, areas of greater stress and thereby risk for plaque rupture.

    While intracoronary ultrasound will sometimes show that a small segment of a recently ruptured plaque will involve a non-calcified segment, we are NOT using calcium in a lesion-specific fashion. We use it as an index of total plaque.

    I also believe that emerging concepts, such as the influence of vitamin D3 on gamma-carboxyglutamic acid Gla protein in vascular tissue are pointing towards the fact that vascular calcification is part of a regulated, active process that influences plaque activity and rupture potential. (See Johnson et al, Vascular calcification: pathobiological mechanisms and clinical implications. Circulation Research 2006 Nov 2006;99(10):1044-59.)

    Increasing calcium scores have been conclusively associated with dramatic increases in coronary events. Likewise, emerging data, including our own, show reducing calcium scores is associated with virtual elimination of events.

    Do you have something better?

  • Anonymous

    10/3/2007 1:53:00 PM |

    No, I don't have anything better - I don't argue that an increasing calcium score is good, only that we have nothing more than anecdotal evidence to show that calcium score reduction is beneficial. And, there are other experts in the field that do not agree that it is. The recent torcetrapib clinical trial shows that not all ways of increasing a generally beneficial lipid such as HDL are theraputic. Have you considered documenting the results of your practice, i.e., what percent of your patients show calcium score change in each of several percentage ranges including reductions, and what their follow-up results are in terms of hard cardiac events? That might stimulate interest in a controlled clinical trial to verify your results.

  • Dr. Davis

    10/3/2007 2:21:00 PM |

    What experts "agree" that a reduction in calcium score is not beneficial? Can you specify who? I know the literature on calcium scoring quite well, and I don't ever recall such a study.

  • WCCAguy

    10/3/2007 9:27:00 PM |

    Dr. Davis,

    The wizard, hmmm, I mean, Dr. Oz says on Oprah that "we'd rather focus on the plaque itself—because the calcium actually might help stabilize the plaque and reduce the chance of it rupturing."

    http://www2.oprah.com/health/yourbody/youdocs/youdocs_faqs_io_10.jhtml

    So, there's the proof you asked for.  It was on the Oprah show.

    And by the way, Oprah's doc says that Ornish has the answer here:

    http://www2.oprah.com/health/yourbody/youdocs/youdocs_faqs_io_11.jhtml

    Seriously, this question of the Calcium Score relationship to risk reduction is a key issue and I appreciate your sharing your knowledge about the question.

    It will be interesting to see if Anonymous gets back to you with expert reference list you've asked for.

  • Anonymous

    10/3/2007 11:05:00 PM |

    I don’t think there is a study that shows that because calcium reduction is so infrequently seen. I have discussed it with the Director of Preventive Cardiology at a State University Hospital who is of the opinion that calcium reduction may not be beneficial. I suspect that most experts would say that there isn’t enough data to conclude that reduction of calcium is either beneficial or detrimental because most have never seen it.

    My point is that several studies show that plaque rupture tends to happen in arteries that have “spotty,” but not extensive calcium, and that coalescence of small calcium deposits into larger deposits reduces the surface area in contact with softer plaque, thereby reducing the extent of the stress risers that can lead to plaque rupture. Quoting from some of these

    “…double helical computerized tomography demonstrates that extensive calcium characterizes the coronary arteries of patients with chronic stable angina, whereas a first AMI [acute myocardial infarction] most often occurs in mildly calcified or noncalcified culprit arteries.” Shemesh et. al., American Journal of Cardiology, 1998 Feb 1;81(3):271-5, Comparison of coronary calcium in stable angina pectoris and in first acute myocardial infarction utilizing double helical computerized tomography.

    “Acute coronary syndromes are associated with a relative lack of calcium in the culprit stenoses compared with stenoses of patients with stable angina.” Joshua A. Beckman et. al., Arteriosclerosis, Thrombosis, and Vascular Biology. 2001;21:1618, Relationship of Clinical Presentation and Calcification of Culprit Coronary Artery Stenoses.

    “The relationship between calcification and clinical events likely relates to mechanical instability introduced by calcified plaque at its interface with softer, noncalcified plaque. In general, as calcification proceeds, interface surface area increases initially, but eventually decreases as plaques coalesce. This phenomenon may account for reports of less calcification in unstable plaque.” Moeen Abedin et. al.,  Arteriosclerosis, Thrombosis, and Vascular Biology. 2004;24:1161, Vascular Calcification - Mechanisms and Clinical Ramifications.  

    “In AMI patients, the typical pattern was spotty calcification, associated with a fibrofatty plaque and positive remodeling. In ACS [acute coronary syndrome] patients showing negative remodeling, no calcification was the most frequent observation. Conversely, SAP [stable angina pectoris] patients had the highest frequency of extensive calcification…To the best of our knowledge, the present IVUS study is the first to demonstrate the relationship between calcification patterns, arterial remodeling, and the morphology of plaques within the culprit lesion segment. The major finding is that there is a significant difference in the pattern of coronary calcifications at the culprit lesion segment, particularly with respect to size, number, and length of the deposits, among patients with AMI, UAP [unstable angina pectoris], and SAP. Small calcium deposits were significantly more frequent in the culprit lesion segments in ACS than in SAP patients.” Shoichi Ehara, et. al., Circulation. 2004;110:3424-3429, Spotty Calcification Typifies the Culprit Plaque in Patients With Acute Myocardial Infarction.

    Also, there is an MRI study of  the carotid arteries of CAD patients who had been given niacin, lovastatin, and colestipol for 10 years. In comparison with matched, untreated patients, the carotid plaque of the treated patients showed much less lipid but much more calcium than the untreated patients. Xue-Qiao Zhao, Arteriosclerosis, Thrombosis, and Vascular Biology. 2001;21:1623, Effects of Prolonged Intensive Lipid-Lowering Therapy on the Characteristics of Carotid Atherosclerotic Plaques In Vivo by MRI.

    It seems that reduction of the “spotty” calcium may reduce the likelihood of plaque rupture, but reduction of coalesced calcium such as is seen in stable angina patients may  increase the surface area of calcium (if the coalesced calcium reverts to spotty deposits) and therefore be detrimental. From the standpoint of evidence-based medicine, the only way to be sure of the effects of calcium reduction is to conduct a clinical trial of patients undergoing such reduction.

    In the meantime, Dr. Davis, since you are one of the few cardiologists whose patients are experiencing calcium score reduction, it would be of great benefit if you would document the results of your practice in a quantitative way.

  • Dr. Davis

    10/4/2007 12:30:00 AM |

    I believe that you are confusing two phenomena.  

    Tissue characterization of specific plaque locations that are prone to rupture (or have ruptured) examined by techniques such as intracoronary ultrasound, is distinct from the concept of using coronary calcium scoring as a surrogate measure of total plaque volume.

    I believe that lipid-laden, calcium-poor plaques do tend to identify sites more prone to rupture. I have witnessed this myself in many intracoronary ultrasound procedures personally performed.

    This is different from using calcium as an index of plaque. While we are uncertain of the relationship of calcium to total plaque in people who have experienced calcium score reduction, all circumstantial evidence points towards dramatic regression of lipid laden plaque, regression of inflammatory cell composition, replacement by fibrous tissue matrix, reduction of oxidative capacity, reduction of  matrix metalloproteinase content, in other words, all the factors that trigger plaque rupture.  

    Though just my suspicion, I believe that the initial relative composition of calcium to plaque of 20% is likely increased, meaning calcium occupies more of total plaque volume. In other words, my suspicion is that, if calcium regresses, total plaque volume has regressed even MORE.

    We plan to publish our data this spring. We had planned to publish our experience much sooner, but the addition of vitamin D to the program has boosted success so much that we decided to start over again around 2 years ago.

  • Anonymous

    12/13/2009 6:34:36 PM |

    hm... bookmarked style Smile)

  • Anonymous

    4/29/2010 4:00:38 AM |

    so great, your arteries are cleared up but you'll get cancer and die from all of those ct scans.
    lovely.

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