The Framingham Crap Shoot

The Framingham risk score is a risk-assessment tool that has become the basis for heart disease prediction used by practicing physicians.

The Framingham system determines that:

· 35% of the adult population in the U.S., or 70 million, is deemed “low-risk.” Low-risk is defined as the absence of standard risk factors for heart disease; low-risk persons have no more than a 1-in-20 chance (5%) of dying from heart disease in the next 10 years. Physicians are advised by the American Heart Association (AHA) and its experts that no specific effort at risk reduction is necessary.

· 25%, or approximately 50 million, U.S. adults are deemed “high-risk,” based on the presence of 2 or more risk factors. High-risk persons experience a 20%-30% likelihood of heart attack in the next 10 years. People at high-risk are candidates for preventive efforts according to the guidelines set by the Adult Treatment Panel-III (Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults; ATP-III) for cholesterol-reducing statin drug treatment and for “lifestyle-modifying” advice.

· The remaining 40% of the adult population, or 80 million people, are judged “intermediate-risk,” with the likelihood of heart attack between 5-20% over the next 10 years. This group should receive preventive advice and might be considered for statin drug treatment.


Let’s do some arithmetic. By the above scheme, the low-risk population will experience 3,500,000 heart attacks over the next decade, or 350,000 heart attacks per year.

The intermediate-risk population (without preventive treatment) will experience 8,000,000 heart attacks over the 10-year time period, or 800,000 per year.

The high-risk population, the group most likely to receive standard advice on diet, exercise, and be prescribed statin cholesterol drugs, will have their risk reduced by 35% by preventive efforts over the 10-year period. This means that heart attacks over 10 years will be reduced from 12,500,000 to 8,125,000 by standard prevention efforts, or reduced to 812,500 heart attacks per year.

These numbers are no secret. They are well known facts that have simply come to be accepted by the medical community. In other words, the standard approach to heart attack prediction makes the fact that two million people will succumb to cardiovascular events in the next year no mystery. This exercise in prediction is coldly accurate when applied to a large population.

The problem is that this approach cannot reliably distinguish which individuals will have a heart attack from those who will not.

From 100 people chosen at random, for instance, the numbers game played above will not confidently identify who among those 100 will have a heart attack, who will not, who will develop anginal chest pains and end up with stents or bypass surgery, or who will die. We just know that some of them will. Some people at high risk will have a heart attack, some people at intermediate risk will have a heart attack, some people at low risk will have a heart attack.

For any specific individual (like you or me), it’s a crap shoot.

That's why precise individual measurement of cardiovascular risk is required for real risk assessment, not applying broad statistical observations and forcing them to conform to the unique life of a specific individual, particularly risk calculators with as few risk parameters as the Framingham risk score.

At what score should a heart catheterization be performed?

That's easy: NONE.

(Although I've addressed this previously, the question has come up again many times and I thought it'd be worth repeating.)

In other words, no heart scan score--100, 500, 1000, 5000--should lead automatically to procedures in someone who underwent a heart scan but has no symptoms.

This question is a common point of confusion.

In other words, is there a specific cut-off that automatically triggers a need for catheterization?

In my view, there is no such score. We can't say, for instance, that everybody with a score above 1000 should have a catheterization. It is true that the higher your score, the greater the likelihood of a plaque blocking flow. A score of 1000 carries an approximately 25-30% likelihood of reduced blood flow sufficient to consider a stent or bypass. This can nearly always be settled with a stress test. Recall that, despite their pitfalls for uncovering hidden heart disease in the first place, stress tests are useful as gauges of coronary blood flow.

But even a score of 1000 carries a 70-75% likelihood that a procedure will not be necessary. This is too high to justify doing heart catheterizations willy-nilly.

Unfortunately, some of my colleagues will say that any heart scan score justifies a heart cath. I believe this is absolutely, unquestionably, and inexcusably wrong. More often than not, this attitude is borne out of ignorance, laziness, or a desire for profit.

Does every lump or bump justify surgery, radiation, and chemotherapy on the chance it could represent cancer? Of course not. There is indeed a time and place for these things, but judgment is involved.

In my view, no heart scan score should automatically prompt a major heart procedure like heart catheterization in a person without symptoms. If a stress test is normal, signifying normal coronary flow (and there are no other abnormal phenomena, such as abnormal left ventricular function), then there is no defensible rationale for heart procedures. Heart procedures like stents and bypass cannot prevent heart attacks in future; they can only restore flow when flow is poor, or stop the heart attack that is about to occur.

However, EVERY heart scan score above zero is a reason to engage in a program of prevention.

"It's genetic"

At 53, Sam had been through the wringer with heart disease. After his first heart attack at age 50, he'd undergone four heart catheterizations, 5 stents, and, most recently, a bypass operation. He came to us to see if there was a better solution.

After hearing Sam's story, I asked,"Did your doctors suggest to you why you had heart disease?"

"Well, they said it was genetic, since my father went through the same thing in his early 50s, though he died after his second heart attack at age 54. They said it was bad luck and nothing could be done about it."

Though Sam's case is more dramatic than most, I hear this argument every day: Risk for heart disease is genetic.

It's true: There are indeed multiple reasons for inheriting causes for coronary heart disease, genes that heighten inflammatory responses, oxidative responses, modify lipoprotein particles, increase blood pressure, etc. There has even been some excitement over developing chromosomal markers for heightened risk.

That's all well and fine, but what can we do about it today?

In practical life, many inherited genetic patterns can be expressed in ways that you and I can identify--and correct. They are not chromosomal markers, but end products of genetic patterns. (Although there are indeed identifiable chromosomal markers, they have not yet led to meaningful treatments to my knowledge.)

These readily identifiable patterns include:

--Lipoprotein(a)--Clearly genetically transmitted, passed from mother or father to each child with a 50% likelihood, then you onto your children if you have it.

--Small LDL--Although small LDL is amplified by high-carbohydrate diets and obesity, it can also occur in slender people who do not indulge in carbohydrates --i.e., a genetic tendency. Or, it can be a combination of poor lifestyle magnifying the genetic tendency for small LDL.

--Low HDL--Particularly the extremes of low HDL below 30 mg/dl. (Although, interestingly, I am seeing more of these people, though not all, respond to vitamin D replacement. Perhaps an important subgroup of low HDL people are really Vitamin D Receptor (VDR) variants.)

--ApoE--Two variants are relevant: ApoE2 and ApoE4. In my experience, it's the E2 that carries far greater significance, though the data are somewhat scanty. ApoE4 people are more sensitive to the fats in their diet (greater rises in LDL with fats; thus, some people advocate a tighter saturated fat restriction with this pattern, though I am not convinced that is the best solution), while ApoE2 people are exceptionally sensitive to carbohydrates, develop extravagant increases in triglycerides, and are very diabetes-prone with even the most minimal weight gain. If two "doses" of the E2 gene are present (homozygotic), then the tendencies are very exagerrated. E4 people are also subject to greater likelihood of Alzheimer's, though it is not a certain risk in a specific individual.

--Postprandial disorders--We use the fasting intermediate-density lipoprotein (IDL) as an easy, obtainable index of the ability to clear after-eating byproducts of meals from the blood. Increased IDL has been related to increased coronary, carotid, and aortic aneurysmal disease.

--Hypertriglyceridemia-i.e., increases in triglycerides, While not all forms of high triglycerides confer risk for atherosclerosis, many do, particularly if associated with IDL, small LDL, increased LDL particle number and/or apoB.


There are more, but you get the point. There are clear-cut genetically-transmitted reasons for greater risk for cardiovascular disease. Some, like lipoprotein(a), yield very high risk. Others, like increased triglycerides, yield mixed levels of risk.

Importantly, all of these patterns--ALL--are identifiable and are treatable. Treatment may not always be the easiest thing, but they are treatable nonetheless. While lipoprotein(a), for instance, is the most difficult pattern to correct in the above list, I remind everyone that our current "record holder" for reversal of plaque and heart scan scores--63% reduction--has lipoprotein(a) that we corrected.

If you've been told that your risk for cardiovascular disease or coronary plaque is "genetic" and thereby uncorrectable and hopeless, run the other direction as fast as you can. Get another opinion from someone willing to take the modest effort to tell you precisely why.

Tim Russert Revisited

A Heart Scan Blog reader brought this piece by Dr. MacDougall to my attention.

Dr. MacDougall created a fictitious posthumous conversation between himself and the late Tim Russert. MacDougall paints a picture of a hardworking, hard-living man who adhered to an overindulgent lifestyle of excessive eating. He concludes that a vegetarian, low-fat diet would have saved his life.

Beyond being disrespectful, I would differ with Dr. MacDougall’s assessment. In fact, I’ve heard an interview with Mr. Russert’s primary care physician in which the doctor claimed that Mr. Russert had been counseled on the need for a low-fat diet and, in fact, adhered to it quite seriously. Far from being an overindulgent, overeating gourmand, he followed the dictates of conventional dietary wisdom according to the American Heart Association. The low-fat diet articulated by Dr. MacDougall is simply a little more strict than that followed by Mr. Russert.

What exactly could Mr. Russert have done to prolong his life? Several basic strategies:

--Added fish oil. This simple strategy alone would have reduced the likelihood of dying suddenly by almost half.

--Eliminated wheat and cornstarch—Mr. Russert developed diabetes in the last few years of his life. By definition, diabetes is an inability to handle sugars and sugar-equivalents. Wheat and cornstarch yield immediate and substantial surges in blood sugar greater than table sugar; elimination causes weight to plummet, blood sugar to drop, and diabetes (at least in its early phases) can be eliminated in many people, particularly those beginning with substantial excess weight.

Just those two strategies alone would more than likely have avoided the tragic death that brought Mr. Russert’s wonderful life and career to an abrupt end.

Of course, he could have even taken his heart health program even further, as we do in the Track Your Plaque program. While the conversation has focused on how to avoid tragic events like sudden cardiac death, why not take it a step farther and ask, "How can coronary plaque be measured, tracked, and reversed?"

In that vein, Mr. Rusert could have restored vitamin D to normal levels; identified all hidden sources of heart disease using lipoprotein testing (though he had small LDL without a doubt, given his generous waist size, HDL of 36 mg/dl and high triglycerides); considered niacin. Simple, yet literally lifesaving efforts, that make reversal much more likely.

Those simple steps, in fact, would have tipped the scales heavily in Mr. Russert’s favor, making a heart attack and/or sudden death from heart disease exceptionally unlikely.

Water: Bottled vs. tap

The Fanatic Cook has a great post discussing the findings of the Environmental Working Group (EWG) on the quality of bottled water.

The full text of the study from the EWG can be viewed here.

They report that "the bottled water industry promotes an image of purity, but comprehensive testing by the Environmental Working Group (EWG) reveals a surprising array of chemical contaminants in every bottled water brand analyzed" . . . After analyzing 10 brands, they conclude that "tests strongly indicate that the purity of bottled water cannot be trusted. Given the industry's refusal to make available data to support their claims of superiority, consumer confidence in the purity of bottled water is simply not justified."

"EWG's study has revealed that bottled water can contain complex mixtures of industrial chemicals never tested for safety, and may be no cleaner than tap water. Given some bottled water company's failure to adhere to the industry's own purity standards, Americans cannot take the quality of bottled water for granted. Indeed, test results like those presented in this study may give many Americans reason enough to reconsider their habit of purchasing bottled water and turn back to the tap."


For these reasons, as well as environmental reasons (plastic bottles filling up dumpsites), I think it is becoming clearer and clearer that bottled water is something we should only use in a pinch, not habitually.

Can CRP be reduced?

The JUPITER study has sparked a lot of discussion about c-reactive protein, or CRP.

If we follow the line of reasoning that prompted this study, reducing CRP may correlate with reduction of cardiovascular events. Thus, in the JUPITER study, Crestor 20 mg per day reduced cardiovascular events by nearly half.

From a CRP perspective, starting values were 4.2 mg/dl in the Crestor group of the trial, 4.3 mg/dl in the placebo group. After 24 months, CRP in the Crestor group was 2.2 mg/dl, 3.5 mg/dl in the placebo group, representing a 37% reduction.

Now, in our Track Your Plaque program--an experience that has yielded the virtual ELIMINATION of cardiovascular events--we aim for a CRP level of 1.0 mg/dl or less, ideally 0.5 mg/dl or less. The majority of people achieve these ambitious levels. In fact, it is a rare person who does not.

How do we achieve dramatic reductions in CRP? We use:

--Weight loss through elimination of wheat and cornstarch--This yields impressive reductions.

--Vitamin D--I have no doubt whatsoever of vitamin D's capacity to exert potent anti-inflammatory effects. I am not entirely sure why this happens (enhanced sensitivity to insulin, reduced expression of tissue inflammatory proteins like matrix metalloproteinase and others, etc.), but the effect is profound.

--Elimination of junk foods--like candies, cookies, pretzels, rice cakes, potato chips, etc.

--Exercise--Amplifies the benefits of diet on CRP reduction.

--Not allowing saturated fats to dominate--Yes, yes, I know. The demonization of saturated fat conversation has been largely replaced by the Taubesian saturated fat has not been confidently linked to heart disease conversation. But controlled feeding studies, in which a single component of diet is manipulated (e.g., saturated vs. monounsaturated vs. polyunsaturated fat) have clearly shown that saturated fats do activate several factors in the inflammatory response.

--Fish oil--Though I am a firm believer in the huge benefits of omega-3 fatty acid supplementation/restoration, the anti-inflammatory effect is modest from a CRP perspective. However, there are anti-inflammatory benefits beyond that of simple CRP (via normalization of eicosanoid metabolism and other pathways).

--Weight loss--A BIG effect. Weight loss drops CRP like a stone. The CRP-reducing effect is especially large if achieved via carbohydrate reduction.

Of course, this is much more complicated than taking a pill. But it is effective to achieve health benefits outside of cardiovascular risk, is enormously useful as part of a weight loss effort, and doesn't cost $1400 per year like Crestor.

In short, if CRP reduction is the goal, it certainly does not have to involve Crestor.

CRP and Jupiter

What is C-reactive protein (CRP)?

It is a blood-borne protein that originates in the liver and serves as an index of the body's inflammatory state. It is triggered by yet another inflammatory signal molecule, interleukin-6.

What triggers this cascade of inflammatory markers? Any inflammatory stimulus, such as being overweight, lack of exercise, vitamin D deficiency, viral illness no matter how trivial, any inflammatory disease like arthritis, small LDL, high triglycerides, poor diet rich in processed foods, resistance to insulin, any injury, incipient diabetes, hidden cancer, lack of education (no kidding), etc.

In other words, many, many conditions, from trivial to serious, trigger increased inflammatory markers like CRP.

A recent analysis (Genetically elevated C-reactive protein and ischemic vascular disease of persons with genetically elevated levels of CRP) suggests that CRP does not, by itself, cause atherosclerotic disease. CRP is therefore simply a marker for conditions that heighten inflammatory responses.

The AstraZeneca people sponsored the enormous JUPITER study of the statin drug, Crestor, that has been causing a stir, mostly glowing pronouncements of how the world would be a better place if everyone took Crestor.

In JUPITER, nealry 18,000 people (men 50 years and over, women 60 years and over) took 20 mg per day Crestor for two years. Participants all had starting LDL cholesterols in the "normal" range of no higher than 130 mg/dl and elevated CRP of 2 mg/dl or greater.

Crestor treatment resulted in 44% reduction in nonfatal heart attack, nonfatal stroke, hospitalization for unstable angina, revascularization (bypass surgery, stents) and death from cardiovascular causes. The reduction in nonfatal heart attack was most marked at 55%.

Admittedly, these are impressive results. Benefits held true for both males and females. At the very least, JUPITER should put to rest some of the fringe arguments that statins do not reduce cardiovascular events. They do. There is no sense in arguing against that. While we might argue about the value of statins in various subsets of people, there is no doubt that they do indeed exert a significant effect.

However, contrary to the hype and broad pronouncements of my colleagues, my concerns are:

1) Rather than shotgun the inflammatory response with a statin drug regardless of cause, doesn't it make more sense to ask why a specific individual has an increased CRP in the first place? For instance, if the answer is vitamin D deficiency, doesn't correction of the deficiency make more sense? (Vitamin D by itself reduces CRP around 60%--more than statin drugs.) Not to mention you obtain all the extraordinary benefits of vitamin D restoration, such as reduced cancer risk, increased bone density, relief from winter "blues," rise in HDL, etc. How about junk foods, obesity, and unrelated inflammatory conditions? Would we therefore indirectly be treating obesity with Crestor?

2) Crestor 20 mg per day, contrary to the study and to many statin studies, will not be tolerated for long by the majority. Muscles aches are not common--they are inevitable, sometimes incapacitating. While JUPITER showed 15% of both treatment and placebo groups experienced muscle effects--no different--this is wildly contrary to real life.

3) While there was a 55% reduction in the number of heart attacks, there continued to be a substantial number of heart attacks in the Crestor treatment arm. Clearly, reduction of CRP with Crestor, while helpful, is not a cure.

I view studies like JUPITER as simply an interesting piece of semi-scientific evidence, tainted to an unknown degree by commercial interests (including those of Dr. Paul Ridker, one of the principal investigators). It is not a mandate to use Crestor carte blanche in people with elevations of CRP.

My interpretation of these data in a practical sense is that Crestor 20 mg per day as sole therapy is useful in a disinterested, non-compliant patient who is unwilling to make substantial changes in lifestyle and nutrition. Helpful? Yes, but hardly an invitation for the world to take Crestor.

I believe that doesn't include any of the readers of this blog.

Nutritional approaches: Large vs. small LDL














It is now a rare person who does not have at least some proportion of their LDL cholesterol as small particles. I estimate that, of the people who come to the office or report their data on the Track Your Plaque website, 90% have at least 40-50% small LDL particles. Some people have 100% small LDL particles. The sample NMR lipoprotein report shows the result for someone with a severe small LDL pattern (the tallest red bar labeled 1354 nmol/L, compared to the 74 nmol/L of the tiny red bar of large LDL.)

The nutritional approach for small vs. large LDL differs. Small LDL particles are most sensitive to carbohydrate intake; large LDL particles are more sensitive to saturated fats.

The conventional "heart healthy" diet that restricts saturated fat reduces large LDL but exerts no effect on small LDL. Thus, a diet that is restricted in saturated fat and weighed more heavily with "healthy whole grains" triggers small LDL particles. Followers of the conversations here recognize that small LDL particles are flagrant triggers for coronary plaque; they have, in fact, become the number one most common cause for heart disease in the U.S.

When you have lipoproteins tested, you can therefore gauge the likely result obtained when specific dietary changes are made. Follow the low saturated fat advice, large LDL will drop modestly, but small LDL skyrockets.













(Image courtesy Liposcience, Inc.)


Eliminate sugars, wheat, and cornstarch and you will see small LDL plummet (along with total LDL).

As an aside, my personal observation is that the "need" for statin cholesterol drugs can be reduced dramatically by paying attention to this important LDL size distinction.

Factory hospitals

Twenty years ago, the American farming industry experienced a dilemma: How to grow more soybeans, corn, or wheat from a limited amount of farmland, raise more cattle and hogs in a shorter period of time, fatter and ready for slaughter within months rather than years?













(Image courtesy Wikipedia)

The solution: Synthetically fertilize farmland for greater crop yield; “factory farms” for livestock in which chickens or pigs are crammed into tiny cages that leave no room to turn, cattle packed tightly into manure-filled paddocks. As author Michael Pollan put it in his candid look at American health and eating, The Omnivore’s Dilemma:


“To visit a modern Concentrated Animal Feeding Operation (CAFO) is to enter a world that for all its technological sophistication is still designed on seventeenth-century Cartesian principles: Animals are treated as machines—“production units”—incapable of feeling pain. Since no thinking person can possibly believe this anymore, industrial animal agriculture depends on a suspension of disbelief on the part of the people who operate it and a willingness to avert one’s eyes on the part of everyone else. . .”


Pollan goes on to argue that the cultural distance inserted between the brutal factory farm existence of livestock and your dinner table permits this to continue:


“. . .the life of the pig has moved out of view; when’s the last time you saw a pig in person? Meat comes from the grocery store, where it is cut and packaged to look as little like parts of animals as possible. The disappearance of animals from our lives has opened a space in which there’s no reality check on the sentiment or the brutality . . .”


The same disconnect has occurred in healthcare for the heart. The emotional distance thrust between the hospital-employed primary care physician, the procedure-driven cardiologist, the crammed-into-a-niche electrophysiologist (heart rhythm specialist) or cardiothoracic surgeon whose principal concerns are procedures—with an eye always towards litigation risk—mimics factory farms that now litter the landscape of the Midwest. The hospitals and doctors who deliver the process see us less as human beings and more as the next profit opportunity.

The “factory hospital” has allowed the subjugation of humans into the service of procedural volume, all in the name of fattening revenues. Never mind that people are not (usually) killed outright but subjected to a succession of life-disrupting procedures over many years. But whether livestock in a factory farm or humans in a factory hospital, the net result to the people controlling the process is identical: increased profits.

The system doesn’t grow to meet market demand, but to grow profits. The myth that allows this growth is perpetuated by the participants who stand to gain from that growth.

See hospitals for what they are: businesses. Despite most hospitals retaining "Saint" in their name, there is no longer anything saintly or charitable about these commercial operations. They are ever bit as profit-seeking as GE, Enron, or Mobil.

Medicare and The Law of Unintended Consequences

This post carries on the line of conversation begun in The Origins of Heart Catheterization: Part I and Part II.



While Dr. Sones labored in the relative obscurity of his catheterization laboratory, the American public was experiencing a crisis in healthcare availability, particularly among the over-65 age group. The population of elderly in the U.S. was growing rapidly. Between 1950 and 1963, their ranks grew from 12 million to 17.5 million. The cost of hospital care was also increasing 6.7% annually, several times the rate of increase in the cost of living of the time. From 1950 to the day of Dr. Sones’ discovery, the average cost for a day in the hospital jumped from $29 to $40. As a result, private health insurance carriers were forced to increase rates, driving premiums higher and farther out of reach for many. Half of all elderly were uninsured. Many feared that, while the sophistication of medical services advanced, healthcare was becoming increasingly unavailable to many, perhaps most, Americans.

The pivotal contribution that ignited wide dissemination of healthcare technology didn’t come from a physician, nor someone in healthcare. It was spurred by a nearly-forgotten bureaucrat. Without the behind-the-scenes laboring of this one man, the present healthcare system might be quite different.

It was largely the work of Nelson H. Cruikshank, an ordained Methodist minister with a Master of Divinity degree and veteran of battling for rights of the elderly and poor deprived of health care. For 10 years, Cruikshank served as director of the AFL-CIO's Social Security Department and had been instrumental in getting the Social Security Disability act passed. Working on the side of organized labor but maintaining the public demeanor of a church pastor, Cruikshank gained a reputation as a fighter for the working man, one who didn’t back down from a political brawl. In an interview regarding the question of corporate-retained earnings for capital investment, he blasted the practice, calling it "taxation by corporation without representation. Through prices paid for consumer goods, buyers are providing capital for industries over which they have no control and from which they receive no dividends” (Time Magazine, Dec. 20, 1948).

For years, Cruikshank lobbied tirelessly on behalf of American unions to bring the new national healthcare bill, known as Medicare, to a vote on the floor of Congress. Numerous efforts at a national program had languished for a decade before Medicare was drafted, and the Medicare legislation remained bottlenecked for years in committees. Cruikshank’s relentless and forceful persuasion was instrumental in finally bringing the bill to a vote. Among the most vocal opponents Cruikshank parried was the American Medical Association (AMA), terrified that the new program would lead to loss of control over healthcare delivery and reimbursement. The AMA labeled Medicare "the most deadly challenge ever faced by the medical profession."

Cruikshank proved how tough he was when he faced off with Dr Morris Fishbein, then president of the AMA, in a radio debate. Oscar R. Ewing, attorney and Democratic political organizer under the Truman administration, offered these reminiscences of the debate:

“Dr. Fishbein described the horrible confusion that existed in the [government-run] British Health Service that had recently been established in Britain. He told of the utter confusion that he found existed when he was in England a few weeks previously; that there were long queues in every doctor's office, that doctors were overburdened with paper work; that a mother who wanted an extra allowance of milk for her sick child had to get a doctor's prescription for it and then go to the Health Department for permission to buy the milk. Dr. Fishbein painted a picture of complete confusion.

“After Dr. Fishbein had described all these horrible details he found existing when in England a few weeks earlier, Mr. Cruikshank pulled out this particular diary [published in a nationally-syndicated column called “Dr. Fishbein's Diary” ] of Dr. Fishbein in which he described his last visit to London. He had arrived in London Friday morning and that afternoon had gone out to spend the weekend with Lord and Lady so-and-so at their country place; that he'd come back to London Monday morning, had stopped by the Health Department to pick up some papers, and had gone on to catch the noon plane for Paris. So the questioner then asked, "Well, is your appraisal of the British Health Service based on those few hours in London?" The question was a stinger and pretty much discredited Dr. Fishbein.”


(Interview by Mr. J.R. Fuchs, April 29, 1969; Harry S. Truman Library Archives)



Cruikshank went on to point out that Dr. Fishbein had indeed never visited the offices of British general practitioners and had spent his brief stay in the company of British aristocracy, attending the Olympics, then making the rounds of Parisian night clubs. Fishbein stumbled through the remainder of the interview, trying unsuccessfully to cover up his gaff. Dr. Fishbein was forced out of his post as AMA president by his peers shortly following the humiliating episode.

Largely due to the years of behind-the-scenes maneuvering by Mr. Cruikshank, on July 30, 1965, President Lyndon Johnson signed the Social Security Amendment that enacted the Medicare program. The legislation that survived into law included Medicare Part A, the portion of the program providing payment for hospital-based diagnostic and treatment services, and Medicare Part B, allowing payment for office-based services and outpatient diagnostic tests.

Finally, after decades of political battles, a national healthcare bill had been passed. Although benefits were restricted to only those eligible for Social Security benefits, it represented a start, a first step toward greater access to healthcare for the broader American public.

At first, the full implications of the Medicare program were not apparent. But as healthcare technology advanced, including that sparked by Sones’ innovation in coronary imaging, Medicare, much as engineered in large part by Nelson Cruikshank, proved a bonanza of payment for heart procedures. Medicare also set the pace for the payment for procedures by non-government, private health insurance.

Thus the stage was set. Thanks to Medicare, over the next 40 years cardiovascular healthcare services, yielding generous revenue for practitioners and hospitals, exploded on the scene, much to the surprise of many, including the AMA. When then president of the American College of Cardiology, Dr. Charles Fisch, was asked how the passage of Medicare affected cardiology, he replied, “It made cardiologists rich, as simple as that” (American Cardiology: The History of a Specialty and Its College, W. Bruce Fye, MD). Indeed, from its introduction in 1965 to 1980, Medicare payments for health claims ballooned 10-fold from $9.6 billion to $105.7 billion, a substantial portion of which went to pay for cardiology claims.

Little did Nelson Cruikshank, ministerial defender of the working man, anticipate that the Medicare he helped engineer would prove to be the catalyst for explosive growth of the modern cardiovascular healthcare system. Ironically, the program of healthcare-for-all that Cruikshank envisioned has, over the last 40 years, soured into a self-serving system that has been corrupted by the profit motive.

In too many instances, it’s a system that uses the working man as its victim, rather than its beneficiary.

Triglyceride and chylomicron "stacking"

Continuing the comments started in Grazing is for cattle, here's an interesting study from the Oxford Center for Diabetes, Endocrinology and Metabolism.

Volunteers were fed a test meal breakfast of Rice Krispies, a banana, and a chocolate milkshake (76.4 grams carbohydrates, 51.9 grams fat, 12.2 grams protein). Lunch was served 5 hours later and consisted of a cheese sandwich and a second chocolate milkshake 43.4 grams carbohydrates, 49.6 grams fat, 24.0 grams protein). Frequent blood samples were then assessed over the day. (Don't try this at home: These are obviously very dangerous foods!)

Here's the pattern of triglycerides that was observed (1st dotted vertical line = breakfast, 2nd dotted vertical line = lunch):



Note that triglycerides only begin to decline 3-4 hours after breakfast, only to peak higher after lunch.


Here's the pattern observed for chylomicrons, the "granddaddy" of lipoproteins that derives from intestinal absorption of fatty acids:



Both graphs from Heath RB et al Am J Phyiol Endocrinol Metab 2006.


With chylomicrons, note a similar pattern to triglycerides: Chylomicrons begin to decline at 3-4 hours, only to peak higher after lunch.

This is the first study to examine the effect of sequential meals on such postprandial (after-eating) patterns. But it makes the graphic point that, if insufficient time is permitted between meals, both triglycerides and chylomicrons will "stack" themselves higher and higher. (Chylomicrons are subjected to processing by the enzyme, lipoprotein lipase, to form highly atherogenic, or plaque-causing, chylomicron remnants.)

While not examined in this study, my bet is that "grazing," i.e., eating small meals or snacks frequently, is an extreme instance of triglyceride, chylomicron, and chylomicron remnant stacking. That can only lead to one thing: accelerated heart and vascular plaque.

What is a healthy vitamin D blood level?

When measuring blood levels of vitamin D (as 25-hydroxy vitamin D), what constitutes a desirable level?

There's no study that directly examines this question, no study that enrolled thousands of people and assigned a placebo group and groups receiving escalating doses of vitamin D and/or achieved higher levels of vitamin D, then observed for development of cancer, diabetes, depression, heart disease, multiple sclerosis, osteoporosis, osteoarthritis, etc. Such a study would requires many thousands of participants (particularly to observe cancer and multiple sclerosis incidence), many years of observation, and many tens of millions of dollars. Nope, only a drug company could afford such costs.

So we have to piece together various observations and extrapolate what we believe to be the ideal level of vitamin D. Epidemiologic observations in several cancers (breast, colon, prostate, and bladder) suggest that a 25-hydroxy vitamin D level of 30 ng/ml or higher is desirable (with less cancer incidence above this level). Other data suggest a level of 52 ng/ml or greater is desirable. Unfortunately, much cancer research looked at intake of vitamin D from food and supplement sources, rather than actual blood levels. We also have to factor in the great individual variation in vitamin D metabolism, with a single dose yielding variable blood levels (as much as a 10-fold difference). There's also the variation introduced by vitamin D-receptor variation (genetic polymorphisms).

A new study using vitamin D administration helps chart the desirable levels of vitamin D.

Vitamin D supplementation reduces insulin resistance in South Asian women living in New Zealand who are insulin resistant and vitamin D deficient - a randomised, placebo-controlled trial.

In this New Zealand study, 42 women (23 to 68 years old) were given 4000 units vitamin D, 39 women given placebo. Median 25-hydroxy vitamin D levels increased from 21 nmol/L (8.4 ng/ml) to 75 nmol/L (30 ng/ml). Both HOMA (a measure of insulin sensitivity) and fasting insulin levels improved, with greatest improvement seen at 25-hydroxy vitamin D levels of 80-119 nmol/L (32-47.6 ng/ml) or greater.

We also know that a vacation on a Caribbean beach in a bathing suit will increase vitamin D blood levels to the 80-110 ng/ml range without ill-effect (at least in young people who maintain the capacity to activate vitamin D in the skin, a phenomenon that declines as we age).

So do we really know the truly ideal level of vitamin D to achieve? I believe that, given the above observations, it is reasonable to extrapolate that the ideal vitamin D blood level likely lies somewhere above 50 ng/ml. We also know that vitamin D toxicity (i.e., hypercalcemia) is virtually unheard of until vitamin D blood levels approach 150 ng/ml, and even then is inconsistent. The health benefits of vitamin D supplementation are so tremendous, that I am not willing to wait for the prospective data to explore this question fully. For now, I aim for a blood level of vitamin D of 60-70 ng/ml (150-175 nmol/L).

Grazing is for cattle

Many dietitians and nutritionists advise many people today to "graze," i.e., to eat small snacks every couple of hours. They argue that it blocks the drop in insulin and blood sugar that can trigger greater appetite and claim it can facilitate weight loss.



This is an absurd notion. Humans are not meant to graze. Humans are meant to find a wild boar or other animal, kill it, gorge on the meat, organs, and fat, then revert to berries, roots, leaves, and other foraged foods until the next kill. A human living in the wild does not have a cupboard or refrigerator full of ready-to-eat snacks to graze on.

The several hours after a meal is the most dangerous for creating coronary atherosclerotic plaque, i.e., the post-prandial period. In other words, eat dinner and, for the next 6-12 hours, your intestinal tract degrades the food; food byproducts are absorbed into the blood or lymph system. The blood is literally flooded with the byproducts of your meal.

Postprandial abnormalities are emerging to be a potent, and much underappreciated, means of causing heart disease and atherosclerosis in other vascular territories (especially carotid arteries and thoracic aorta).

Not eating--i.e., the fasting state--for extended periods is good for you. Encouraging people to graze amplifies atherosclerotic risk, since it creates an abnormal prolonged postprandial state.

The disastrous results of a low-fat diet

Rob was never that committed to following the program in the first place.

I met Rob because of a modest heart scan score and consultation for a cholesterol abnormality. Rob had been cycled through all the statin agents by his primary care physician, all of which resulted in terrible muscle aches that he found intolerable.

I started out, as usual, characterizing his cholesterol abnormality with lipoprotein testing (NMR):

LDL particle number 1489 nmol/L
LDL cholesterol (Friedewald calculation) 143 mg/dl
Small LDL 52% of total LDL
HDL 50 mg/dl
Triglycerides 82 mg/dl

(LDL particle number is the emerging gold standard for LDL quantification, superior to calculated or Friedewald LDL cholesterol for prediction of cardiovascular events.)

Rob is a busy guy. After only a couple of brief visits, life and work got in the way and Rob let his attentions drift away from heart health. Since the information I provided made little impact on his thinking, he reverted to the low-fat diet his primary care doctor had originally prescribed and that he read about in magazines and food packages. He also ran out of the basic supplements I had advised, including fish oil and vitamin D, and just never restarted them.

A couple of years passed and Rob decided that just poking around on his own might not cut it. So he came back to the office. We repeated his NMR lipoprotein analysis:

LDL particle number 2699 nmol/L
LDL cholesterol (Friedewald calculation) 229 mg/dl
Small LDL 81% of total LDL
HDL 53 mg/dl
Triglycerides 78 mg/dl


Two years of a low-fat diet had caused Rob's LDL particle number to skyrocket by 81%, nearly all due to an explosion of small LDL. Recall that small LDL is more susceptible to oxidation, more inflammation-provoking, more adhesive--the form of LDL particles most likely to cause heart disease.

Also, note that, despite the enormous increase in small LDL, HDL and triglycerides remained favorable. This counters the popular rule-of-thumb offered by some that small LDL is not present when HDL is "normal."

Low-fat diets as commonly practiced are enormously destructive. In Rob's case, a low-fat diet caused both calculated Friedewald LDL as well as LDL particle number to increase dramatically. In many other people, low-fat diets increase calculated Friedewald LDL modestly or not at all, but cause the more accurate LDL particle number to increase significantly, all due to small LDL.

I'm happy to say that, once Rob witnessed how far wrong he could go on the wrong program, he's back on Track. (Sorry, pun intended.) He has resumed his supplements and eliminated the food triggers of small LDL--wheat, cornstarch, and sugars.

Dr. David Grimes reminds us of vitamin D

In response to the Heart Scan Blog post, Fish oil makes you happy: Psychological distress and omega-3 index, Dr. David Grimes offered the following argument.

Dr. Grimes is a physician in northwest England at the Blackburn Royal Infirmary, Lancashire. He is author of the wonderfully cheeky 2006 Lancet editorial, Are statins analogues of vitamin D?, questioning whether the benefits of statin drugs simply work by way of increased vitamin D blood levels.


There is a fashionable interest in Omega-3 fatty acids, and these become equated with fish oil.

But fish oil is much more. Plankton synthesise the related squalene (shark oil) which, in turn, is converted into 7-dehydrocholesterol (7-DHC). The sun now comes into play and it converts 7-DHC into vitamin D (a physico-chemical process).

Small fish eat plankton, large fish eat small fish, and we eat large fish. So vitamin D passes through the food chain.

This has been a vital source of vitamin D for the the Inuits and also for the Scots and other dwellers of northwest Europe. (Edinburgh is on the same latitude as Hudson Bay and Alaska, further north than anywhere in China). In these locations there is not adequate sunlight energy to guarantee synthesis of adequate amounts of vitamin D, again by the action of sunlight on 7-DHC in the skin.

When the Scots moved from coastal fishing villages to industrial cities such as Glasgow, they became seriously deficient in vitamin D, and so the emergence of rickets. This was followed by a variety of other diseases resulting from vitamin D deficiency: tuberculosis, dental decay, coronary heart disease, and even multiple sclerosis and depression (the Glasgow syndrome).

And so it was with the Inuits. When their diet changed from fish for breakfast, fish for lunch, fish for dinner, they became deficient of vitamin D and they developed diseases characteristic of industrial cities, where there is indoor work for long hours, indoor activities, and atmospheric pollution.

It is the vitamin D component of fish and fish oils that is important.

I recently saw an elderly lady from Bangladesh living in northwest England. I would have expected her to have a very low blood level of vitamin D, as her exposure to the sun was minimal. However the blood level was 47ng/ml, not 4 as expected. She eats oily fish from Bangladesh every day, showing its value as a source of vitamin D with subsequent good health. I expect her blood levels of omega-3 fatty acids would also be high.

But it is unfashionable vitamin D that is important, not fashionable omega-3.

David Grimes
www.vitamindandcholesterol.com


Excellent point. The health effects of omega-3 and vitamin D are intimately intertwined when examining populations that consume fish.

In this study of Inuits, it is indeed impossible to dissect out how much psychological distress was due to reduced vitamin D, how much due to reduced omega-3s. My bet is that it's both. Thankfully, we also have data examining the use of pure omega-3 fatty acids in capsule (not intact fish) form, including studies like GISSI Prevenzione.

Nonetheless, Dr. Grimes reminds us that both vitamin D and omega-3 fatty acids from fish oil play crucial roles in mental health and other aspects of health, and that it's the combination that may account for the extravagant health effects previously ascribed only to omega-3s.

Why does fish oil reduce triglycerides?

Beyond its ability to slash risk for cardiovascular events, omega-3 fatty acids from fish oil also reduce triglycerides.

There's no remaining question that omega-3s do this quite effectively. After all, the FDA approved prescription fish oil, Lovaza, to treat a condition called familial hypertriglyceridemia, an inherited condition in which very high triglycerides in the 100s or 1000s of milligrams typically develop.

The omega-3 fraction of fatty acids are unique for their triglyceride-reducing property. No other fraction of fatty acids, such as omega-6 or saturated, can match the triglyceride-reducing effect of omega-3s.

But why does fish oil reduce triglycerides?

First of all, what are triglycerides? As their name suggests, triglycerides consist of three ("tri-") fatty acids lined up along a glycerol (sugar) "backbone." Triglycerides are the form in which most fatty acids occur in the bloodstream, liver, and other organs. (Fatty acids, like omega-3, omega-6, mono- or polyunsaturated, or saturated, rarely occur as free fatty acids unbound to glycerol.) In various lipoproteins in the blood, like LDL, VLDL, and HDL, fatty acids occur as triglycerides.

Of all lipoproteins, chylomicrons (the large particle formed through intestinal absorption of fatty acids and transported to the liver via the lymph system) and VLDL (very low-density lipoprotein, very low-density because they are mostly fat and little protein) particles are richest in triglycerides. Thus, we would expect that omega-3s exert their triglyceride-reducing effect via reductions in either chylomicrons or VLDL.

Indeed, that seems to be the case. The emerging evidence suggests that omega-3 fatty acids from fish oil reduce triglycerides through:

--Reduced VLDL production by the liver (Harris 1989)
--Accelerating chylomicron and VLDL elimination from the blood
--Activation of peroxisome proliferator-activated receptor gamma (PPAR-gamma)--Omega-3s ramp up the cellular equipment used to convert fatty acids to energy (oxidation) (Gani 2008)

Combine omega-3 fatty acids from fish oil with wheat elimination and you have an extremely potent means of reducing triglycerides. Read a previous Heart Scan Blog post here to read how a patient reduced triglycerides 93.5% from 3100 mg/dl to 210 mg/dl in just a few weeks using fish oil and wheat elimination.

Fish oil makes you happy: Psychological distress and omega-3 index

For another perspective on omega-3 blood levels, here's an interesting study in northern Quebec Inuits.

Traditionally, Inuits consumed large quantities of omega-3-rich seal, fish, caribou, and whale, even eating the fat. However, like the rest of the world, modern Inuits have increased consumption of store-bought foods, largely processed carbohydrates. Along with this trend has emerged more heart disease, diabetes, and depression.

A group from Laval University and University of Guelph, both in Canada, examined the relationship of plasma EPA + DHA levels and measures of psychological distress. This group had previously shown that Inuits older than 50 years had twice the plasma omega-3 levels (11.5%) compared to those younger than 50 years (6.5%), reflecting the shift away from the traditional diet.

Psychological distress was measured with The Psychological Distress Index Santé-Québec Survey (PDISQS-14): the higher the score, the greater the psychological distress. (In the graphs, tertile 1 is least distressed; tertile 5 is most distressed. Sorry about the small chart graphic--click on the graphic to make it bigger.)


From Lucas M et al 2009 (http://www.nutrasource.ca/NDI/Assets/Articles/Plasma%20omega-3%20and%20psychological%20distress%20among%20Nunavik%20Inuit.pdf)

"Our main finding was that women in the second and third tertiles of EPA+DHA concentrations in plasma PLs [phospholipids] had a 3 times lower risk of having a high-level PD [psychological distress] score than women in the lowest tertile."

While the relationship is stronger for women, you can see that, the higher the EPA + DHA plasma level, the lower the likelihood of psychological distress. Interestingly, the tertile with the greatest distress and lowest EPA + DHA levels had a plasma level of 7.0-7.5%--far higher than average Americans.

(Plasma levels of EPA + DHA were used in this study, which tend to reflect more recent omega-3 intake than the more stable and slower-to-change RBC Omega-3 Index that we use. Plasma levels also tend to run about 10-20% lower than RBC levels.)

Of course, there's more to psychological distress than omega-3 blood levels. After all, eating fish or taking fish oil capsules won't make money worries go away or heal an unhappy marriage. But it is one variable that can be easily and safely remedied.

Hospitals are a hell of a place to get sick

I answered a page from a hospital nurse recently one evening while having dinner with the family.

RN: "This is Lonnie. I'm a nurse at _____ Hospital. I've got one of your patients here, Mrs. Carole Simpson. She's here for a knee replacement with Dr. Johnson. She says she's taking 12,000 units of vitamin D every day. That can't be right! So I'm calling to verify."

WD: "That's right. We gauge patients' vitamin D needs by blood levels of vitamin D. Carole has had perfect levels of vitamin D on that dose."

RN: "The pharmacist says he can replace it with a 50,000 unit tablet."

WD: "Well, go ahead while Carole's in the hospital. I'll just put her back on the real stuff when she leaves."

RN: "But the pharmacist says this is better and she won't have to take so many capsules. She takes six 2,000 unit capsules a day."

WD: "The 50,000 units you and the pharmacist are talking about is vitamin D2, or ergocalciferol, a non-human form. Carole is taking vitamin D3, or cholecalciferol, the human form. The last time I checked, Carole was human."

RN: (Long pause.) Can we just give her the 50,000 unit tablet?

WD: "Yes, you can. But you actually don't need to. In fact, it probably won't hurt anything to just hold the vitamin D altogether for the 3 days she's in the hospital, since the half-life of vitamin D is about 8 weeks. Her blood level will barely change by just holding it for 3 days, then resuming when she's discharged."

RN: (Another long pause.) Uh, okay. Can we just give her the 50,000 units?"

WD: "Yes, you can. No harm will be done. It's simply a less effective form. To be honest, once Carole leaves the hospital, I will just put her back on the vitamin D that she was taking."

RN: "Dr. Johnson was worried that it might make her bleed during surgery. Shouldn't we just stop it?"

WD: "No. Vitamin D has no effect on blood coagulation. So there's no concern about perioperative bleeding."

RN: "The pharmacist said the 50,000 unit tablet was better, also, because it's the prescription form, not an over-the-counter form."

WD: "I can only tell you that Carole has had perfect blood levels on the over-the-counter preparation she was taking. It works just fine."

RN: "Okay. I guess we''ll just give her the 50,000 unit tablet."


From the alarm it raises trying to administer nutritional supplements in a hospital, you'd think that Osama Bin Laden had been spotted on the premises.

I laugh about this every time it happens: A patient gets hospitalized for whatever reason and the hospital staff see the supplement list with vitamin D, fish oil at high doses, iodine, etc. and they panic. They tell the patient about bleeding, cancer, and death, issue stern warnings about how unreliable and dangerous nutritional supplements can be.

My view is the exact opposite: Nutritional supplements are a wonderful, incredibly varied, and effective array of substances that, when used properly, can provide all manner of benefits. While there are selected instances in which nutritional supplements do, indeed, have interactions with treatments provided in hospitals (e.g., Valerian root and general anesthesia), the vast majority of supplements have none.

Does fish oil cause blood thinning?

Omega-3 fatty acids from fish oil have the capacity to "thin the blood." In reality, omega-3s exert a mild platelet-blocking effect (platelet activation and "clumping" are part of clot formation), while also inhibiting arachidonic acid formation and thromboxane.

But can fish oil cause excessive bleeding?

This question comes up frequently in the office, particularly when my colleagues see the doses of fish oil we use for cardiovascular protection. "Why so much fish oil? That's too much blood thinning!"

The most recent addition to the conversation comes from a Philadelphia experience reported in the American Journal of Cardiology:

Comparison of bleeding complications with omega-3 fatty acids + aspirin + clopidogrel--versus--aspirin + clopidogrel in patients with cardiovascular disease.(Watson et al; Am J Cardiol 2009 Oct 15;104(8):1052-4).

All 364 subjects in the study took aspirin and Plavix (a platelet-inhibiting drug), mostly for coronary disease. Mean dose aspirin = 161 mg/day; mean dose Plavix = 75 mg/day. 182 of the subjects were also taking fish oil, mean dose 3000 mg with unspecified omega-3 content.

During nearly 3 years of observation, there was no excess of bleeding events in the group taking fish oil. (In fact, the group not taking fish oil had more bleeding events, though the difference fell short of achieving statistical significance.) Thus, 3000 mg per day of fish oil appeared to exert no observable increase in risk for bleeding. This is consistent with several other studies, including that including Coumadin (warfarin), with no increased bleeding risk when fish oil is added.

Rather than causing blood thinning, I prefer to think that omega-3 fatty acids from fish oil restore protection from abnormal clotting. Taking omega-3 fatty acids from fish oil simply restores a normal level of omega-3 fatty acids in the blood sufficient to strike a healthy balance between blood "thinning" and healthy blood clotting.

Heart Scan Blog readers take impressive doses of omega-3s

Here are the results from the latest Heart Scan Blog poll:

What is your dose of omega-3 fatty acids, EPA + DHA, from fish oil? (Add up the total content of EPA + DHA per capsules; multiply times number of capsules.)

The 479 respondents answered:

Less than 1000 mg per day
65 (13%)

1000-1999 mg per day
145 (30%)

2000-2999 mg per day
98 (20%)

3000-3999 mg per day
79 (16%)

4000-4999 mg per day
33 (6%)

5000-5999 mg per day
14 (2%)

6000 mg per day or more
45 (9%)


The poll did not discriminate between who has heart disease, who does not; who is taking omega-3 fatty acids for high triglycerides or for reduction of lipoprotein(a) (which requires high doses), or other indications. So variation is to be expected.

We can say that nearly all respondents are likely receiving sufficient omega-3s to impact cardiovascular risk, since the benefits begin just by consuming fish twice per month. I am especially impressed at the proportion of respondents (53%) who take at least 2000 mg per day of EPA + DHA. It's clear that people are really embracing the notion that omega-3 fatty acids pack a real wallop of health benefits.

Because different people in different situations and lipid/lipoprotein patterns have different omega-3 needs, there is really no "right" or "wrong" dose of omega-3 fatty acids.

However, there are several factors that enter into knowing your ideal omega-3 intake:

--Higher triglycerides require higher doses
--Lipoprotein(a) can respond to higher doses
--Having coronary or carotid plaque means you desire a "therapeutic" dose of omega-3s, not just a "preventive" dose

Time is a factor, also: The longer you take omega-3s, the higher your blood levels go. You can accelerate the replacement of non-omega-3s with higher doses of omega-3s.

But too much is not good either. Some participants in Track Your Plaque, for instance, have experimented with very high doses of EPA + DHA in the 9000-10,000 per day range and witnessed dramatic increases in LDL.

Much of the uncertainty about dosing will also be cleared up as we get more experience with the Omega-3 RBC Index, i.e, the proportion of fatty acids in red blood cells that are omega-3s. We are currently aiming for an Omega-3 Index of 10%, given the heart attack reductions observed at this level.