Is health the absence of disease?

It sounds like a word game, but is health the absence of disease?

In other words, if you're not sick, you must be well. If you don't have cancer, heart disease (overtly, that is, like angina and heart attack), the flu, diarrhea, fevers, pain someplace . . . well then, you must be well.

Of course, most of us would disagree. You can be quite unhealthy yet have no overt, explicit disease. Yet this is the philosophy followed in conventional medicine when it comes to many aspects of health.

With regards to heart disease, if you have no chest pain or breathlessness, you don't have heart disease. "Oh, all right, we'll perform a stress test to be sure." Track Your Plaque followers, as well as former President Bill Clinton, recognize the enormous pitfalls of this approach: It fails to identify the vast majority of hidden heart disease. In heart disease, the apparent lack of overt, sympatomatic "disease" does NOT equal the true absence of disease, even life-threatening.

How about nutritional supplements? Vitamin D is a perfect example. Blood levels of vitamin D of 10 ng/ml--profound deficiency--are common, yet people feel fine. Beneath the surface, blood sugar rises because of poor insulin response, hidden inflammatory responses are magnified, HDL is lower and triglycerides are higher, coronary plaque grows at an accelerated rate, colon cancer activity is heightened . . . Though you feel fine.

Can an abnormal "endothelial response" be present while you feel fine? You bet it can. This refers to the abnormal constrictive behavior of arteries that is present in many people who have hidden coronary plaque or risk for coronary plaque, but is entirely beneath consciousness.

How about a triglyceride level of 200 mg/dl, fatally high from the Track Your Plaque experience? (We aim for <60 mg/dl.) This is typical in people who follow the diets endorsed by agencies like the American Heart Association and the American Diabetes Association, organizations too eager to keep the money flowing from corporate sponsors and thereby offer us their advice based more on politics and less on health. Triglyceride levels of 200 mg/dl cause no symptoms.


At so many levels, the absence of disease is NOT the same as health. Health is something that is expressed by, yes, feeling good, but it's also measured by so many other factors hidden beneath the surface. An annual physical is one lame effort to address this aspect of "health." But it needs to go farther, much farther.

Heart scan, lipoprotein testing, vitamin D blood level--those are the basic requirements to go beyond the shortsighted practice of the conventional approach in the world of heart disease.

Cuckoo for Cocoa Puffs





Take a look at the list of ingredients in Cocoa Puffs: corn, sugar, corn syrup--all high glycemic index foods.

In other words, Cocoa Puffs is the physiologic equivalent of pure table sugar. Sure, it comes packaged with this wacky bird and the back of the box usually has fun games and offers. There's also the clever, fast-paced TV commercials to remind you of how fun Cocoa Puffs can be.


What is the actual consequence of a breakfast of a food like Cocoa Puffs in a cup of skim milk? That's easy: A big surge in insulin and blood sugar (from the corn and sugar), a drop in HDL cholesterol, surge in triglycerides (from the sugar and sugar-equivalents), increase in small LDL. Beyond this, you raise blood pressure and experience an insatiable increase in appetite. Then you get fat.

Obviously, none of this is desirable. Then why does the American Heart Association allow its Heart CheckMark endorsement on the package?

The Heart Association is trapped in 1982. Low-fat was in, saturated fat was the sole enemy of heart disease.

In 1982, the evils of small LDL, for instance, were unappreciated. LDL cholesterol was LDL cholesterol--all of it was bad and saturated fats seem to raise LDL. But the story has evolved enormously since then: LDL is not all the same. Small LDL is among the principal culprits in heart disease, the same small LDL hugely magnified by Cocoa Puffs and other similar products that fill 70% of supermarket shelves.

The American Heart Association needs to get with the times. The conversation on healthy diets has progressed considerably. Yet garbage foods that wreak havoc on health like Cocoa Puffs continue to be endorsed by an organization that still carries substantial clout with the American consumer.

My advice: Until they change their tune, anything that carries the endorsement of the American Heart Association should be eliminated from your diet.

Further validation of the Track Your Plaque 60:60:60 targets

The latest analysis of the data from Treat to New Targets (TNT) Trial shows that higher HDL cholesterol values are associated with reduced risk of heart attack, even in those with low LDL cholesterol values.

This counters the argument that some have made that, if a person takes a statin drug, raising HDL adds no additional benefit.

In the 9770-participant trial (randomized, double-blind), participants were given atorvastatin (Lipitor®) 10 mg or 80 mg per day. The study was sponsored by Pfizer, the manufacturer of Lipitor®. All participants were survivors of heart attacks, significant coronary disease by heart catheterization, or had previously undergone coronary angioplasty, stent placement, or bypass surgery—a high-risk group.

At the third month of enrollment, lipid (cholesterol panel) values were obtained and used as the basis for analysis. Participants on 80 mg atorvastatin achieved an average LDL cholesterol (Friedewald) of 77 mg/dl; participants taking 10 mg achieved a level of 101 mg/dl. Using these values, 8.7% of participants taking the higher dose of drug experienced an event, compared to 10.9% on the lower dose (which the investigators called a 22% relative reduction).

However, when the groups were re-analyzed by HDL cholesterol levels, higher HDLs remained predictive of less heart attack and other events, with the group having the highest HDL of =55 mg/dl experiencing 25% less events. Most interestingly, this effect was upheld even in participants with very low LDL cholesterols of <70 mg/dl.

I'm always a bit leery of drug company-sponsored studies, especially ones in which virtually all the participants tolerated a drug like Lipitor 80 mg, a dose in my experience that is very poorly tolerated for more than a few months. (Muscle aches are, in my experience, inevitable. I do not even recommend this dose.) In other words, the data are, in that respect, too good to believe.

Anyway, despite my reservations about these big money studies, there was nothing to gain from the HDL observation. (Of course, at one time, there would have been, given Pfizer's efforts to commercialize the now-kaput torcetrapib, scrapped because of excess mortality in phase II trials.)

Thankfully, there's other data that likewise suggest that the higher the HDL, the better. Yet more validation for the Track Your Plaque lipid targets of LDL 60 mg/dl, triglycerides 60 mg/dl or less, HDL 60 mg/dl or greater.



Copyright 2007 William Davis,MD

My sister called today . . .

My younger sister, aged 48 years (sorry, sis), called this morning.

"I'm going to my doctor today. What labs should I tell him to draw?" she asked.

"Why do you have to tell him? Can't you just ask him what he thinks should be drawn?"

"No," she said. "He just draws what I tell him to."


Maybe my sister is bossier than most. But I've heard this from many patients, as well. They go to their primary care physician and end up requesting this or that test. Sometimes their doctor complies. Often, they resist and refuse to do so.

I've heard many complaints from patients about doctors refusing to order even fairly benign tests like a vitamin D blood level or lipoproteins, even a C-reactive protein.

The number of these sorts of complaints seems to be growing. Ten years ago, it rarely happened. Today, I hear this nearly every day.

I think it is symptomatic of the growing discontent we all have with the status quo in healthcare. We are all expected to submit to the paternalistic, what-can-you-possibly-know mentality that still rules the day in medical offices. Only 40-50 years ago, if you wanted to look at a medical book, you'd have to ask the librarian for special permission so that they could make sure you weren't just a pervert trying to look at naked bodies. Today, every manner of medical and health information can be found online. Quite a contrast.

We are entering a new age, one in which people are far better informed, have surfed the internet and read media reports on health topics, have been exposed to drug company advertising, and know a fair amount about nutritional supplements. I think the system needs to change to accommodate this rapidly growing hyper-knowledgeable society.

In past, when a health problem turned up, you'd turn to your doctor first. I predict that,in the next few years, we will use the doctor as a place of last resort, the person we turn to when all else has failed, after you've exhausted your information sources.

I hope that the Track Your Plaque process will become one of the engines of change, an information resource that provides empowering tools that don't replace your doctor, but provide many information tools that are superior and may minimize your reliance on a health care provider.


Copyright 2007 William Davis, MD

Failure to diagnose

I picked up a hospital publication today. Featured prominently on the cover was a glossy photo of an attorney and his wife, both smiling.

The headline: "Atorney grateful for the lifesaving work of the ______ Hospital."

The story detailed the near-tragic story of how this 59-year old man was exercising at his local gym, only to lose consciousness after stepping off one of the exercise machines. Bystanders--hospital employees, as luck would have it--checked the man's pulse: none. They performed CPR. Ambulance called, blah blah blah.

Severe coronary disease discovered, extensive atherosclerotic plaque in all three coronary arteries, a 12-inch chest incision later and he and his wife are eternally grateful for the fine work done at X hospital. And so they should be for a job well done.

But wait a minute. After the urgent hospital dust settled, did anyone ask the one crucial question: Why wasn't this man's far-advanced heart disease identified? Why did he have to die and be resuscitated before his disease was recognized?

If this man was an indigent, homeless alcoholic . . . well, perhaps it would be no surprise. Health is neglected in this population. But a successful attorney?

Detecting hidden coronary atherosclerotic plaque simply isn't that tough. In Milwaukee, $199 would have diagnosed his disease unequivocally.

Unfortunately, we still have to set off drumrolls and crash cymbals to even begin to get the attention of the practicing physicians around us who continue to fail to diagnose hidden coronary disease. I wouldn't be at all surprised to hear if this man had a $4000 nuclear stress recently that was normal. Why would a nuclear stress test be normal? Easy: Wrong test.

The hidden message: The failure to diagnose paid somebody and some hospital over $100,000. So, why bother detecting disease before the payoff?

The profit motive in all this is all too obvious. The only other explanation is the enormous, repetitive, and systematic stupidity of the conventional approach to heart disease detection. You have the solution, at least for you and the people around you, in a CT heart scan and in the Track Your Plaque program.


Copyright 2007 William Davis, MD

Interview with world heart scan authority, Dr. John Rumberger












Dr. John Rumberger has, from its start, been a good friend of the Track Your Plaque program.

We are very proud to have his friendship. Dr. Rumberger is not only a world-renowned scientist in the world of cardiac imaging and heart scanning, but also a humanitarian and gentleman. From the very first day I met Dr. Rumberger many years ago, when he answered my many silly and naive questions about heart scans, I came to appreciate his deep and genuine interest in improving the world of heart disease detection.

I tracked Dr. Rumberger down from his busy schedule, now on a new project at the Princeton Longevity Center in Princeton, New Jersey.




TYP: Dr. Rumberger, we understand that your career has taken a new direction. Can you tell us about your current project?

Dr. Rumberger: I have not really taken a new direction, but further expanded on my opportunities.

I remain Medical Director of PrevaHealth Wellness Diagnostic Center (formerly Healthwise) in Columbus, Ohio. At that center, we see patients referred by their doctors for further refinement in cardiac risk stratification using heart and body scanning. However, by only doing scans alone there are limited opportunities for me to react in a meaningful way with the individual patients and thus I miss opportunities to do direct one-on-one teaching.

Currently, I spend most of my time in Princeton, NJ as Director of Cardiac Imaging for the Princeton Longevity Center. At the PLC, we perform comprehensive medical examinations along with screening CT scans, blood work, fitness and diet consultation to affect a more thorough one-on-one experience. Each patient then receives a comprehensive de-briefing.

In addition, since I have been involved with cardiac CT for now nearly 24 years, the PLC also affords me an opportunity to develop a CT coronary angiography training program for cardiologists and radiologists (www.cardiaccta.us). Together, these new efforts are merely an extension of my interests in prevention, patient care, and teaching.



TYP: Based on your book, The Way Diet, we understand that you advocate gravitating away from processed foods and incorporating more nuts, monounsaturated oils, lean proteins like fish, and a reduction in processed carbohydrates. You’ve also been a proponent of the Mediterranean diet that demonstrated a dramatic reduction in cardiovascular events in the Lyon Heart Study.

Has your philosophy or practice regarding nutritional strategies evolved or changed in any way since your book was published?

Dr. Rumberger: No, the strategies put forward in The Way Diet have, if anything, been reinforced by further and further research in selecting foods that are naturally high in anti-oxidants with lean sources of protein and reduced intake of processed sugar-containing preparations. The book, however, is what I call a ‘philosophy’ book which looks at three major aspects: proper diet, adequate exercise, and stress management. I also include some recipes which follow the dietary plans, but are done using ingredients that are commonly found in the average home.



TYP: We regard you as the source of much of the wisdom in heart scanning as the basis for early heart disease detection. Much of the original and subsequent scientific data, in fact, bears your name. Can you touch on some of the new directions your research has taken over the past couple of years?

Dr. Rumberger: We have come a long way from the beginning and there is a long way to go to get this incorporated into routine preventive care in the United States.

The most recent research has provided not so much more information as continuing to reinforce the old research. As I always say: if your research continues to show the same thing, then maybe there is a clear pattern here! The biggest challenge is getting this message into the mainstream and also trying to get cardiologists (and internists and, in fact, the general public) away from ‘stenosis’ detection to define the real cause of heart attacks (plaque) and into ‘plaque detection.’ This is where basic heart scanning has the greatest potential to reduce the expanding burden of heart disease.

You may be aware of our SHAPE initiave in which an international group of cardiologists and scientists have advocated getting a heart scan FIRST and then, if abnormal, checking your cholesterol values; rather than using cholesterol (which is valuable, but highly variable in predictive power) to determine who needs medications or further testing. The heart scan can define the current level of plaque and THEN you can determine what to do about it. [See the Track Your Plaque report on the release of the Shape Guidelines at SHAPE Guidelines]



TYP: We understand that you are performing CT coronary angiography in your center. What are your thoughts on the role of CTA in 1) screening for coronary disease, and 2) its role in the diagnostic process?

Dr. Rumberger: CT coronary angiography (CTA) is an incredible method to really define the extent of disease, beyond just coronary calcium. Its role is most appropriate in ruling OUT a significant ‘stenosis’ while really defining the absence or presence (and thus ‘how much’) of plaque. It is the ultimate ‘plaque detector’. CTA is best used in patients who have some symptoms, but in whom the clinician feels may NOT have clear cardiac chest pain. By risk-stratifying using CTA, we also gain information about heart size, heart function, whether there is prior heart damage, as well as other important information. This then becomes a very universal means to risk-stratifying individuals.



TYP: Thanks for your wonderful insights, Dr. Rumberger! We look forward to hearing about your future projects and research directions.





About John Rumberger, PhD, MD:

Dr. Rumberger is among the world's leading authorities on cardiac and vascular imaging using EBT and CT Scanning. Dr. Rumberger was among the first to pioneer the use of new CT technologies for heart scanning. He currently serves as Director of Cardiac Imaging at the Princeton Longevity Center, Princeton, NJ.

Dr. Rumberger is formerly Professor of Medicine and Consultant in the Department of Cardiovascular Diseases at the Mayo Clinic in Rochester, Minnesota. Dr. Rumberger received his doctorate in engineering from The Ohio State University in 1976 and graduated from the University of Miami School of Medicine in 1978.

During his over 20 year career as a clinician, educator, and researcher, Dr. Rumberger has published nearly 500 scientific papers and book chapters. He has lectured worldwide on EBT, early heart disease diagnosis, and wellness. He is an Established Investigator of the American Heart Association and a Founding Member of the International Society of Atherosclerosis Imaging. Dr Rumberger is an active Reviewer for the Journal of the American Medical Association, Archives of Internal Medicine, and the New England Journal of Medicine.

Summer in Wisconsin

It's been a glorious summer in Wisconsin.

For weeks straight, we've enjoyed bright, sunny days with temperatures in the 70s and 80s. Even now, in late September, our windows are wide open and the days are warm and sunny. Yesterday, it was 84 degrees. Yes, it did rain for a stretch of about 10 days in August, but for the most part it has been a wonderfully sunny summer.

So it struck Andy as a big surprise when we checked his 25-OH-vitamin D3 blood level: 15 ng/ml--severe deficiency.

"I don't get it. I'm outside almost every day. Look at me! How do you think I got this tan?"

Indeed, Andy sported a nice dark tan over exposed areas.

In fact, Andy was among the dozen or so people this month with deficiencies of this magnitude.

Deficiency is not the exception; it is the rule. Of course, if Andy's blood level is at the level of severe deficiency in September, he will only trend lower over the next few weeks and months. He would likely have shown vitamin D blood levels of <10 ng/ml by January--profound deficiency.

With deficiency of this severity, Andy has been exposing himself to risk for prostate and colon cancer, diabetes and metabolic syndrome, low HDL, higher triglycerides, higher blood sugars, higher C-reactive protein, osteoporosis, arthritis . . .

Correcting the deficiency is easy. But, as you can see, getting sun is not always the answer. Even with an active, outdoor lifestyle and a tan, Andy still remained significantly deficient. Oral replacement with vitamin D3, or cholecalciferol, is an absolute necessity.

Wacky statin effects

In general, I try to exhaust possibilities before resorting to the statin drugs. But we still do use them, both in general practice and the Track Your Plaque program.

There are indeed a number of ways to reduce, minimize, or eliminate the need for these drugs. For instance, if your LDL is 150 mg/dl but comprised of 90% small particles, then a reduction in wheat and other high-glycemic index foods, weight loss, fish oil, and niacin can yield big drops in LDL.

But sometimes we need them. Say LDL is 225 mg/dl and is a mix of large and small. Exercise, weight loss, niacin, oat bran, ground flaxseed, Benecol, etc. and LDL: 198 mg/dl. Alright, that's when statins may be unavoidable. There's also many people who are not as motivated as all of us trying to reverse heart disease. Some just want the easy way out. Statins do indeed provide that option in some people.

So in truth, we end up using these drugs fairly regularly. How common are muscle aches and fatigue? In my experience, they are universal . If taken long enough, or if high doses are used, muscle complaints are inevitable. Most of the time, thankfully, they're modest and often relieved with a change in drug or with coenzyme Q10 supplementation.












But there's more to statin side effects than muscle aches. Among the wacky effects that I have witnessed with statin drugs:

--Insomnia-especially with simvastatin (Zocor and Vytorin). Insomnia can be quite severe, in fact, with difficulty sleeping more than 3-4 hours a night.

--Bone aches--I don't know why this happens, unless it's somehow related to muscle aches. I've seen this with all the statins, but more commonly with Crestor.

--Memory impairment--a la Dr. Duane Graveline's wacky book, Lipitor: Thief of Memory. I've seen this with Lipitor, though it's uncommon, and less commonly with simvastatin (Zocor, Vytorin).

--Diarrhea--More common with Zetia and Vytorin (which contains Zetia), because of the inhibition of bile acid reabsorption.

--Migraine headaches--This I certainly do not understand, but the cause-effect relationship is undoubtedly true in an occasional person.

--Low libido--In men more than women, though it may be more due to men being more willing to admit to it.

--Increased appetite--Rare, though I've seen dramatic instances.

--Tinnitus--Ringing in the ears. I've only seen it with Lipitor and Zocor.


In their defense (and in general I am no defender of the drug manufacturers), most people do fine with statin drugs, though the majority do eventually require coenzyme Q10 in my experience. By the way, coenzyme Q10 can be an indispensable aid to help tolerate statin agents.

I'd love to hear about your wacky experiences.

Track Your Plaque goes global

I don't use this space to toot my horn (at least I don't too often), but we were looking at the listings of our viewers and members. I was surprised to learn that we now have Track Your Plaque followers in 15 different countries around the world!

We have members from Europe including England, Ireland, Switzerland, Belgium, and the Czech Republic. We have members from as far away as South Africa, Australia, India, Singapore, Thailand, and China.

I see the entire Track Your Plaque process as a grand experiment. Never before in history has a system of health been delivered via a communication medium like the web. The internet provides more interactivity than television, it's more fluid than a book, it's more dynamic and evolves more rapidly than a face-to-face interaction. While we cannot be hands-on over the internet, we can still deliver all the crucial information and, hopefully, the knowledge on how to get it done.



Track Your Plaque is part of an even grander experiment: The movement to shift control over health away from the medical system, doctors, and hospitals and back to individuals. When you think about it, the idea that "health" (more acurately sickness) should be managed by people and institutions (e.g., hospitals and insurance companies) outside of the individual is a 20th century concept. I predict that this notion will also become a relic of the 20th century.

Someday, we will look back and laugh at the folly of the 20th century style of paternalistic health care. Perhaps it was a necessary step in the sequence to transform health to a better system that returns control to the individual. But it's clearly time for a change.

Track Your Plaque is an example of the extraordinary power that can be taken by a lone individual with only minimal assistance of a health care provider. I see Track Your Plaque members who understand heart disease (at least the coronary disease aspect) far better than 95% of my cardiology colleagues, 100% of my internal medicine and family practice colleagues. Physicians maintain a role, but their role has shrunk and receded. They should be facilitators of success in health, educators, a resource to turn to when we need help. It's not that way today. It will be in 50 years.

But, right now, we can get started on this wonderfully self-empowering--liberating-- movement by participating in this global experiment known as Track Your Plaque, the program with the goofy name that has the potential to usurp and unravel this enormous institutionalized system of health care the world has created.

Go to your corners

There's a heated debate being waged on the Heart Hawk Blog

Dr. Melissa Walton-Shirley authored an editorial entitled It Should Be the Right of All Americans to Have Primary Percutaneous-Based Intervention for Acute Coronary Syndrome .

Heart Hawk's response:

Dr. Walton-Shirley feels the best use of time, talent, and money is to build more cath labs and train more people in how to use them so that IF you have a heart attack, you stand a better chance of being pulled back from the brink of death. Unfortunately, you have to first let people get so sick that they are about to die. My position is to use those same resources to prevent such disasters from happening in the first place. Take your pick. You cannot spend the money twice.

I am no stranger to "direct angioplasty," meaning performing immediate coronary angioplasty (with stenting) for heart attack. Since 1990, I have personally performed hundreds, perhaps over a thousand of these procedures, particularly when I was younger and my practice was procedurally-focused. But, after a few years, I quickly recognized the futility of this approach. Yes, you might have aborted a heart attack ,perhaps even saved a life at the brink of death. But wouldn't it have been better to have prevented the entire episode in the first place?

In my mind, putting a cath lab on every corner, as Dr. Walton-Shirley suggests, is like having a fire truck on every street to prevent a house from burning down. It's an enormously expensive proposition that provides no incentive to prevent fires. Why not spend the money on preventing the fires?

Expanding access to cath lab procedures is putting the fox in the henhouse. Procedures yield money--big money--for hospitals and cardiologists. Guess what happens when you build facilities that exceed the need? Yes--the number of procedures grows, whether or not they were needed.

In my view, Dr. Shirley-Walton's opinions are symptomatic of the profit-driven, procedurally-focused quick-fixes that divert money that would be far better spent on effective dissemination of preventive practices.

The myth of mild coronary disease

I hear this comment from patients all the time:

"They told me that I had only mild blockages and so I had nothing to worry about."

That's one big lie.

I guess I shouldn't call it a lie. Is it a lie when it comes from ignorance, arrogance, laziness, or greed?

"Mild coronary disease" is usually a label applied to coronary atherosclerotic plaque that is insufficient to block flow. Thus, having a few 20%, 30%, or 40% blockages would be labeled "mild." No stents are (usually) implanted, no bypass surgery performed, and symptoms should not be attributable to the blockages. Thus, "mild."

The problem is that "mild" blockages are no less likely to rupture, the eruptive process that resembles a little volcano spewing lava. Except it's not lava, but the internal contents of atherosclerotic plaque. When these internal contents of plaque gain contact with blood, the coagulation process is set in motion and the artery both clots and constricts. Chest pains and heart attack result.

So, the essential point is not necessarily the amount of blood flow through the artery, but the presence of coronary atherosclerotic plaque. Just having plaque--any amount of plaque--sets the stage to permit plaque rupture.

One thing is clear: The more plaque you have, the greater the risk for rupture. But the quantity of plaque cannot be measured by the "percent blockage." It is measured by the lengthwise extent of plaque, as well as the depth of plaque within the wall. Neither of these risk features for plaque rupture can be gauged by percent blockage.


Coronary atherosclerosis is a diffuse process that involves much of the length of the artery. It is therefore folly to believe that a 15 mm long stent has addressed the disease. This is no more a solution than to replace the faucet in your kitchen in a house with rotting pipes from the basement up.

The message: ANY amount of coronary plaque is reason to engage in a program of prevention--prevention of plaque rupture, prevention of further plaque growth, perhaps even regression (reversal). It is NOT a reason to be complacent and buy into the myth of "mild" coronary disease, the misguided notion that arises from ill-conceived procedural heart disease solutions.


Image courtesy Wikipedia.

Copyright 2008 William Davis, MD

Red flags for lipoprotein(a)



Lipoprotein(a), Lp(a), is an important cause for heart disease, heart attack, and coronary atherosclerotic plaque.

How do you know you have it?

Of course, it could be as simple as checking a blood level. But there are also a number of red flags for the presence of Lp(a), tell-tale signs that suggest it is present and contributing to the growth of coronary plaque.

I've seen so much of this pattern over the years that it's gotten so that I can pretty much pick out most of the people with Lp(a) just by either looking at them or by hearing their story. I do this simply by knowing what hints to look for.

Some of the red flags for Lp(a) include:

--High blood pressure in a slender person. Overweight is the overwhelmingly common reason for high blood pressure. However, inappropriate high blood pressure in a slender person can serve to tip you off that Lp(a) is present.

--HIgh LDL cholesterol poorly responsive to statin drugs. For instance, someone's LDL cholesterol of 190 mg/dl will be treated with Lipitor 40 mg, but drops to only 165 mg/dl, a very poor response. This can sometimes point towards Lp(a).

--Family clustering of heart disease in people before age 60. For instance, father with heart attack age 53, uncle with heart attack at age 55, aunt with heart attack age 59, etc. This clustering of risk, more often than not, signals Lp(a).

--Coronary disease or high heart scan score in the presence of relatively bland appearing lipids. For instance, LDL cholesterol 130 mg/dl, HDL 55 mg/dl, triglycerides 70 mg/dl on no medications or other efforts--figures ordinarily not associated with high likelihood of heart disease--yet heart disease is indeed present. This can mean that Lp(a) is the concealed culprit behind coronary atherosclerosis.

These red flags are not perfect. If you lack any of them, it doesn't necessarily rule out the possbility of having Lp(a). They simply serve as signs to suggest that Lp(a) may be lurking.

Once Lp(a) is identified, then the battle begins to gain control over this somewhat troublesome genetic pattern. Resourcesfulness and some ingenuity may be required. However, knowing that you have it shows you where to concentrate your efforts.

Vytorin study explodes--But what's the real story?

The makers of Vytorin, Merck/Schering-Plough Pharmaceuticals, issued a press release about the the Enhance Study yesterday. The news has triggered a media frenzy.

The NY Times reporting of the story:

Drug Has No Benefit in Trial, Makers Say

The 700 participants in the trial all had a condition called "heterozygous hypercholesterolemia," a genetic disorder that permits very high LDL cholesterols. The average LDL at the start was 318 mg/dl.

The Times reported that, while Vytorin cut "LDL levels by 58 percent, compared to a 41 percent reduction with simvastatin alone," but "the average thickness of the carotid artery plaque increased by 0.0111 of a millimeter in patients taking Vytorin, compared to an increase of 0.0058 of a millimeter in those taking only simvastatin." There was no difference in heart attacks or other "events" between the two groups.

(Vytorin is the combination of simvastatin and Zetia.)

In other words, the participants taking Vytorin had 53 ten-thousands of a millimeter more plaque growth than the group taking just simvastatin.

I am always uncomfortable when put in the position of defending a drug or drug company. However, it is patently absurd that this study has generated such attention. I suspect the public and media are waiting for another Vioxx-like debacle, with memories of concealed or suppressed data that suggested heightened heart attack risk that was dismisssed by the drug manufacturer. (That's not to say that the company hasn't been trying to delay or modify the outcome of the study, which they apparently have, much to the objections of the FDA.)

However, at this point, there is no reason to believe that this question possesses any parallels to the Vioxx fiasco.

If we accept the data as reported, however, we might say it calls the entire "Lipid Hypothesis" into question: If LDL cholesterol is significantly reduced but is not correlated with reduction in plaque, is LDL the means by which atherosclerotic plaque progresses? This trial does not answer that question, but does serve to raise some doubt.

Another issue: Heterozygous hypercholesterolemia, and thereby LDL cholesterol, may not be the overwhelming driver of plaque growth in this population. It is probably the number of small LDL particles, a factor which is not revealed by LDL cholesterol. For this reason, heterozygous hypercholesterolemia by itself is insufficient to cause heart disease. Some other factor(s) needs to be present. I would propose that it is the size of the LDL particle: When small, heart disease develops; when large, heart disease is less likely to develop. This issue was not addressed by this study. Readers of The Heart Scan Blog know that conventional LDL cholesterol, the number used in this study, is a virtually worthless number for truly gauging plaque behavior because of its flagrant inaccuracy.

So, there are substantial uncertainties, contrary to the absolute certainty expressed by people like Dr. Steve Nissen (who, by the way, has no expertise in lipoprotein disorders). It is premature to reach any firm conclusions from this study. The only conclusions that I personally come to are 1) Is this yet another reason to question the entire Lipid Hypothesis as it stands? and 2) What would the results have been had LDL particle number and LDL particle size been examined, not just LDL?

I would not automatically conclude that Zetia causes carotid plaque. This is absurd. And I am definitely not one to come to the rescue of a drug or drug manufacturer. I am simply after understanding and truth.

As an interesting aside, Dr. Howard Hodis of the University of Southern California and an expert in carotid scanning for heart disease prevention research, made a comment relevant to us in the Track Your Plaque program:

"Clearly, progression of atherosclerosis is the only way you get events,” Dr. Hodis said. “If you don’t treat progression, then you get events."

Dr. Arthur Agatston in the news



The Miami Herald has a new report on Dr. Arthur Agagtston (of South Beach Diet fame) to announce his new book, The South Beach Heart Health Revolution:
The South Beach Diet doctor takes on cardio care

Agatston, the granddaddy of CT heart scanning, is always at least worth listening to. Although his diet may not be perfect, it clearly has jumped light years ahead of conventional diets like the inane American Heart Association diet. The South Beach Diet focuses on healthy oils, nuts, lean meats, vegetables, and fruits, while slashing grains (except in the often disastrous phase III).

The article lists Dr. Agatston's advice to achieve a "heart healthy" lifestyle:


• Maintain a healthy weight through diet.

• Undergo CT heart scans to check for arterial plaque.

• Do aerobic exercise, along with stretching and strengthening workouts.

• Ask your doctor about taking statins and other cholesterol-lowering drugs.


We wouldn't have CT heart scan scoring (at least in its present form) without Dr. Agatston, who developed the algorithm for scoring years ago in the early days of heart scanning. We also need to credit him with putting together a rational diet despite the counter-information emanating from the Heart Association, the USDA (a la Food Pyramid, the one that makes Americans fat and diabetic), and the American Diabetes Association, among others.

But "Ask your doctor about taking statins and other cholesterol-lowering drugs"? This is where Dr. Agatston begins to falter. While he is putting his enormous notoriety to use, his message is bland and ineffective. "Do aerobic exercise"? We don't need Dr. Agatston to tell us this.

As much as Art Agatston has added to the national conversation on heart disease and diet, he has failed to deliver the message of true heart disease prevention. His approach lacks just a few crucial ingredients like lipoprotein testing, diagnosis of hidden causes of heart disease (like Lp(a)), and vitamin D. (Two years ago I had a patient I saw for an opinion after he'd showed Dr. Agatston his lipoprotein panel. The patient said Dr. Agatston looked at the report and didn't know what to do with it and handed it back to him without comment. He then asked if he wanted his autograph.)

Anyway, the rising tide raises all boats. Agatston's repeated public endorsements of heart scans will help deliver the message that heart disease is detectable in its early stages and should trigger action to follow a heart disease prevention program.

That alone is an accomplishment in a world hell-bent on dragging us into the hospital for procedures.

Take this survey: I DOUBLE-DARE YOU

In a previous post I entitled Heart disease reversal a big "No No", I posed a challenge--a dare--to readers to ask their doctors if coronary heart could be reversed.

Here's what I said:

I dare you: Ask your doctor whether coronary heart disease can be reversed.

My prediction is that the answer will be a flat "NO." Or, something like "rarely, in extraordinary cases," kind of like spontaneous cure of cancer.

There are indeed discussions that have developed over the years in the conventional scientific and medical literature about reversal of heart disease, like Dean Ornish's Lifestyle Heart Trial, the REVERSAL Trial of atorvastatin (Lipitor) and the ASTEROID Trial of rosuvastatin (Crestor). Reversal of atherosclerotic plaque in these trials tends to be small in scale and sporadic.

The concept of reversal of heart disease has simply not gained a foothold in the lexicon nor in the thinking of practicing physicians. Heart disease is a relentlessly, unavoidably, and helplessly progressive disease in their way of thinking. Perhaps we can reduce the likelihood of cardiovascular events like heart attack and death with statin drugs and beta blockers. But reverse heart disease? In your dreams!

We need to change this mentality. Heart disease is a reversible phenomenon. Atherosclerosis in other territories like the carotid arteries is also a reversible pheneomenon. Rather than throwing medicines and (ineffective) diets at you (like the ridiculous American Heart Association program), what if your doctor set out from the start not just to reduce events, but to purposefully reduce your heart's plaque? While it might not succeed in everyone, it would certainly change the focus dramatically.

After all, isn't this the theme followed in cancer treatment? If you had a tumor, isn't cure the goal? Would we accept an oncologist's advice to simply reduce the likelihood of death from cancer but ignore the idea of ridding yourself completely of the disease? I don't think so.

Then why accept "event reduction" as a goal in heart disease? We shouldn't have to. Heart disease reversal--elimination--should be the goal.


I know of one person who actually followed through on this challenge and asked his cardiologist whether his heart disease could be reduced or reversed. As predicted, the answer was no. No explanation followed.

But allow me to reiterate: Heart disease is 1) detectable, 2) quantifiable, 3) controllable, and, in many cases 4) reversible.

What if there was a big payoff to your doctor if heart disease was reversed, say $100,000? That's enough to dwarf the payoff from procedures. Guess what? You'd have doctors fighting for your business, a chance to reverse your disease, ads to that effect, champions of reversal emerging. No new tools would be necessary. They could use the tools already available. Then why hasn't this happened? Is the technology unavailable? Are the treatments ineffective?

No, heart disease is a controllable and reversible process with tools that are available today. But there is, of course, no big payoff for doing it. So the financial incentive remains to do procedures, not to reverse the disease.

But I'd like to re-pose this challenge. Ask your doctor if heart disease can be reversed, or at least reduced. I've even posted a Survey at the top left for anyone who tries.

Again, my prediction: Nobody will try it and nobody will post survey results. Why? Despite my rantings (and those of a few others) about the concept of heart disease being a reversible process, in the public's consciousness it remains a death sentence and the only solution is hospital procedures. My colleagues continue to cultivate this attitude and it serves them well financially.

I'll be disappointed if I prove to be right. I hope that I am wrong. But I don't think that I am.



Copyright 2008 William Davis, MD

Michael Pollan on Nutritionism



The wonderfully articulate Michael Pollan has written another book. Although he presents little new to anyone who read his previous book, The Omnivore's Dilemma: A natural history of four meals, he is such a wonderful writer, with such clever ways of seeing the world, that I couldn't resist this new, less ambitious book.

The new book is In Defense of Food: An eater's manifesto.

As in Omnivore's Dilemma, Pollan reminds us that we've lost contact with real food, foods that our great grandmother would recognize, not the just-add-water, dried, pulverized, sweetened, high-fructose, hydrogenated, shrink-wrapped, artificially-colored products that pass as foods in the grocery store.

In particular, Pollan attacks what he calls the ideology of Nutritionism. "The widely shared but unexamined assumption is that the key to understanding food is indeed the nutrient. Put another way: Foods are essentially the sum of their nutrient parts." He calls this "Nutritionism."

In the section called "Nutritionism comes to market," he uses margarine as the prototypical product of this philosophy:

"No idea could be more sympathetic to manufacturers of processed foods, which surely explains why they have been so happy to jump on the nutritionism bandwagon. Indeed, nutritionism supplies the ultimate justification for processing food by implying that with a judicious application of food science, fake foods can be made even more nutritious than the real thing. This of course is the story of margarine, the first important synthetic food to slip into our diet. Margarine started out in the nineteenth century as a cheap and inferior sustitute for butter, but with the emergence of the lipid hypothesis in the 1950s, manufacturers quickly figured out that their product, with some tinkering, could be marketed as better--smarter!--than butter: butter with the bad nutrients removed (cholesterol and saturated fats) and replaced with good nutrients (polyunsaturated fats and then vitamins). Every time margarine was found wanting, the wanted nutrient could simply be added (Vitamin D? Got it now. Vitamin A? Sure, no problem. But of course margarine, being the product not of nature but of human ingenuity, could never be any smarter than the nutritionists dictating its recipe, and the nutritionists turned out to be not nearly as smart as they thought. The food scientists' ingenious method for making healthy vegetable oil solid at room temperature--by blasting it with hydrogen--turned out to produce unhealthy trans fats, fats that we now know are more dangerous than the saturated fats they were designed to replace. Yet the beauty of a processed food like margarine is that it can be endlessly reengineererd to overcome even the most embarrassing about-face in nutritional thinking--including the real wincer that its main ingredient might cause heart attacks and cancer. So now the trans fats are gone, and margarine marches on, unfazed and apparently unkillable. Too bad the same cannot be said of an unknown number of margarine eaters."


Anyone who reads and thinks a lot about nutrition will find little new here. But nobody says it better than Pollan. While Gary Taubes (Good Calories, Bad Calories) is the real thinker of our age about nutrition, Michael Pollan is the true writer about it.

With books like these making the bestsellers list, I believe that we are gradually seeing rationality return to eating. It makes people skeptical of the glitzy ads that run on TV around the clock. I hope that Pollan's new book will make more and more people leery of the latest health claim that adorn some product. "More omega-3!" "A low-fat snack." "Heart Healthy!" "High in healthy fiber!"

Cholesterol follies

Rudy is a 59-year old man. He's had three heart catheterizations, two of which resulted in stent implantations. Obviously, Rudy should be the beneciary of a prevention program.

His basic cholesterol values:

Total cholesterol 164 mg/dl--pretty good, it seems.

LDL cholesterol 111 mg/dl--Wow! Not too bad.

HDL cholesterol 23 mg/dl--Uh oh, that's not too good.

Triglycerides 148 mg/dl--By national (NCEP ATP-III) guidelines, triglycerides of 150 mg/dl and below fall within the desirable range.


So we're left with an apparently isolated low HDL cholesterol, nothing more. On the surface, it doesn't seem all that bad.

Of course, we need to keep in mind that this pattern landed Rudy in the hospital on several occasions and prompted several procedures.

Should we rely on these results? How about Rudy's lipoproteins?

Here they are (NMR; Liposcience):

LDL particle number 2139 nmol/l--Representing an effective LDL of 213--over 100 mg higher than the standard value (above) suggests.

Small LDL particles 2139 nmol/l--In other words, 100% of all Rudy's LDL particles are small. (Thus, weight-based measures of LDL cholesterol fail to tell us that he has too many small particles.)

Large HDL 0 (zero) mg/dl--Rudy has virtually no functional HDL particles.


If we had relied only on Rudy's standard cholesterol values, we would have focused on raising HDL. However, lipoprotein analysis uncovered a smorgasbord of additional severe patterns. The high LDL particle number comprised 100% of small particles is especially concerning.

Truly, conventional cholesterol testing is a fool's game, one that time and again fails to fully uncover or predict risk for heart disease. One look at Rudy's lipoproteins and it becomes immediately obvious: This man is at high risk for heart disease and the causes are clear.

Of course, many physicians and insurance companies argue that the added information provided by this portion of the lipoprotein test added around $70 more to the expense.

When you see results like this, is there even a choice?

Equal calories, different effects

A great study was just published in the Journal of the American College of Cardiology:

Metabolic effects of weight loss on a very-low-carbohydrate diet compared with an isocaloric high-carbohydrate diet in abdominally obese subjects.

88 obese adults with metabolic syndrome were placed on either of two diets:

1) A very low-carbohydrate, high-fat diet (VLCHF): 4% calories from carbohydrates (truly low-carb); 35% protein; 61% fat, of which 20% were saturated. In the first 8 weeks, carbohydrate intake was severely limited to <20 grams per day, then <40 grams per day thereafter.

2) A high-carbohydrate, low-fat diet (HCLF): 46% calories from carbohydrates; 24% protein; 30% total fat, of which <8% were saturated.

Both diets were equal in calories (around 1400 calories per day--rather restrictive) and participants were maintained on the program for six months.

At the end of the six month period, participants on the VLCHF diet lost 26.4 lb, those on the HCLF diet 22.2 lbs (though the difference did not reach statistical significance). Thus, both approaches were spectacularly successful at weight loss.

Surprisingly, blood pressure, blood sugar, insulin and insulin sensitivity (a measure called HOMA) were all improved with both diets equally. Thus, these measures seemed to respond more to weight loss and less to the food composition.

Lipids differed between the two diets, however:


VLCHF:
Total cholesterol: initial 208.4 mg/dl final 207.7 mg/dl

LDL: initial 125 mg/dl final 123 mg/dl

HDL: initial 55 mg/dl final 64.5 mg/dl

Triglycerides: initial 144 mg/dl final 74 mg/dl

Apoprotein B: initial 98 mg/dl final 96 mg/dl


HCLF
Total cholesterol: initial 208.4 mg/dl final 187.5 mg/dl

LDL: initial 126 mg/dl final 108 mg/dl

HDL: initial 51 mg/dl final 54.5 mg/dl

Triglycerides: initial 157.6 mg/dl final 111 mg/dl

Apoprotein B: initial 100 mg/dl final 95 mg/dl


Some interesting differences became apparent:
--The VLCHF diet more effectively reduced triglycerides and raised HDL.
--The HCLF diet more effectively reduced total and LDL.
--There was no difference in Apo B (no statistical difference).

The investigators also made the observation that individual responsiveness to the diets differed substantially. They concluded that both diets appeared to exert no adverse effect on any of the parameters measured, both were approximately equally effective in weight loss with slight advantage with the carbohydrate restricted diet, and that lipid effects were indeed somewhat different.


What lessons can we learn from this study? I would propose/extrapolate several:

When calories are severely restricted, the composition of diet may be less important. However, when calories are not so severely restricted, then composition may assume a larger role. When calories are unrestricted, I would propose that the carbohydrate restriction approach may yield larger effects on weight loss and on lipids when compared to a low-fat diet.

The changes in total cholesterol are virtually meaningless. Part of the reason that it didn't drop with the VLCHF diet is that HDL cholesterol increased. In other words, total cholesterol = LDL + HDL + trig/5. A rise in HDL raises total cholesterol.

Despite no change in Apo B, if NMR lipoprotein analysis had been performed (or other assessment of LDL particle size made), then there would almost certainly have seen a dramatic shift from undesirable small LDL to less harmful large LDL particles on the VLCHF diet, less change on the HCLF diet.

The lack of restriction of saturated fat in the VLCHF that failed to yield adverse effects is interesting. It would be conssistent with the re-analysis of saturated fat as not-the-villain-we thought-it-was put forward by people like Gary Taubes (Good Calories, Bad Calories).

In the Track Your Plaque experience, small LDL is among the most important measures of all for coronary plaque reversal and control. Unfortunately, although this study was well designed and does add to the developing scientific exploration of diet, it doesn't add to our insight into small LDL effects. But if I had to make a choice, I'd choose the low-carbohydrate, high-fat approach for overall benefit.

Is skinny necessary for reversal?

Nothing we do in the Track Your Plaque program guarantees that coronary atherosclerotic plaque or your heart scan score is reduced or reversed.



But everything we do weighs the odds in your favor of successfully achieving reversal: correction of lipoprotein patterns, uncovering hidden patterns like Lp(a), vitamin D, being optimistic--it all tips the scales in your favor.

But how necessary is it to be skinny, meaning somewhere near your ideal weight?

It is important, but not as important as it used to be. Let me explain.

I used to tell people that plaque would not regress unless ideal weight was achieved and all the parameters of abdominal obesity and metabolic syndrome were corrected. This includes blood pressure, blood sugar, low HDL, small LDL, high triglycerides, and high c-reactive protein. Curiously, though, as we've gotten better and better at reducing coronary calcium scores, I've been finding that complete correction of all parameters, including achieving ideal weight, don't seem to be as necessary to achieve plaque reversal.

I almost hate to say this, but I've even witnessed significant drops in heart scan scores in people with body mass indexes (BMI) of 30--obese.

The necessary change doesn't seem to be weight, per se, but the consequences of weight. In other words, if you remain overweight, but blood sugar, HDL, small LDL, etc. have shown substantial improvement, then reversal is still achievable.

Then is it okay to be fat or overweight?

Reducing weight to ideal weight does indeed tip the scales in your favor, since it represents an observable, perceptible measure of all associated patterns. Dropping weight can also minimize the need for efforts to correct the consequences of overweight--you might need less niacin, fish oil, exercise, blood pressure medication, etc. to succeed at plaque reversal. Achieving ideal weight may also provide benefits like reduced risk of cancers and degenerative diseases of the hips and knees. But, to my recent surprise over the last two years, achieving ideal weight is not an absolute requirement to achieve reversal.

This is contrary to what some others say. For instance, in an upcoming interview with Dr. Joel Fuhrman on the Track Your Plaque website, Dr. Fuhrman argues that 10% body fat for males, 22% body fat for females, accelerates plaque and symptom reversal. Dr. Fuhrman is author of Fasting and Eating for Health, Eat to Live, and a new upcoming 2-part book, Eat for Health, and proponent of high-nutrient vegetarian diets and fasting. Dr. Fuhrman has been helpful in teaching us some important lessons on how to apply periodic fasting to accelerate plaque reversal.

So, which is it, fat or skinny?

If given a choice (which everyone has), I'd choose skinny. But, provided all the parameters associated with overweight are corrected, then remaining overweight doesn't necessarily mean that you can't still succeed at plaque reversal.

If you are interested in knowing what your ideal weight is, there are a number of software calculators and tables available, including the HealthCentral.com calculator and the National Heart, Lung, and Blood Institute BMI Calculator.


Image courtesy Wikipedia.

Copyright William Davis, MD 2008

MESA Study: Track Your Plaque-Lite?

The long-awaited data analyses from the Multi-Ethnic Study of Atherosclerosis (MESA) are finally making it to press.

The MESA Study is an enormously ambitious and important study of 6800 people, 45 to 84 years old, that includes white, black, Hispanic, and Chinese participants from six communities around the U.S. (Forsyth County, NC; Northern Manhattan and the Bronx, NY; Baltimore and Baltimore County, Md; St Paul, Minn; Chicago, Ill; and Los Angeles County, California.) Participants had no history of heart disease at enrollment. All underwent a heart scan (either EBT or multi-detector heart scans) at the start. It is therefore the largest prospective study involving heart scans ever performed. It is, not unexpectedly, yielding some fascinating observations relevant to the Track Your Plaque program. The MESA study is, incidentally, funded by the non-commercial, publicly-funded National Heart, Lung, and Blood Institute and is therefore presumably free of commercial bias.

Among the most recent publications is Risk factors for the progression of coronary artery calcification in asymptomatic subjects: Results from the Multi-Ethnic Study of Atherosclerosis (MESA) In this analysis of 5700 of the MESA participants, a repeat heart scan was obtained an average of 2.4 years after the first. Conventional risk factors for heart disease were obtained at the start (see below for details under Measurement of Covariates.)

After analyzing the data and risk factors assessed, such as age, sex, race, blood pressure, body mass index (BMI), presence of diabetes, blood sugar, and family history of heart disease, two questions were asked:

1) What risk factors predict heart scan scores?

2) What risk factors predict progression (i.e., increase) in heart scan scores?

(The second question is particularly relevant to us and the Track Your Plaque experience.)

The MESA analysis showed that essentially all the risk factors assessed correlated with both the initial heart scan score, as well as the rate of progression. No surprises here.

But the most eye-opening finding was that the conventional risk factors assessed explained only 12% of the variation and progression in heart scan scores (coefficient of determination, or R squared, = 0.12.) In other words:

--Conventional risk factors like LDL cholesterol, diabetes, and excess weight explain only a tiny fraction of why someone develops coronary atherosclerotic plaque as represented by a heart scan score.

--The great majority of risk for a high heart scan score remains unexplained by conventional risk factors.

--The great majority of risk for progressive increase in heart scan scores also remains unexplained by conventional risk factors.


In light of the MESA analysis, it's no surprise that strategies like reducing LDL cholesterol with statin drugs fails to prevent most heart attacks. It's no surprise that conventional prevention programs that talk about "knowing your numbers," eating a "balanced" or low-fat diet, etc., fail miserably to prevent the vast majority of heart attacks and heart procedures.

MESA confirms what we've been saying these past few years: If you want control over coronary heart disease, you won't find it in Lipitor, a low-fat diet, and other limited conventional notions of risk. Correction of conventional risk factors like cholesterol and blood pressure are, in a word, a failure. I wouldn't even call the conventional approach Track Your Plaque-Lite. They don't even come close.

If conventional risk factors can explain only 12% of the reason behind heart disease, we've got to look elsewhere to understand why you and I develop this process.



Measurement of Covariates
Information on demographics, smoking, medical conditions, and family history was collected by questionnaire at the initial examination. Height and weight were also measured at the baseline examination, and blood was drawn for measurements, including lipids, inflammation, fasting glucose, fibrinogen, and creatinine. Resting blood pressure was measured 3 times in the seated position, and the average of the last 2 measurements was used in the analysis. Medication use was determined by questionnaire. Additionally, the participant was asked to bring to the clinic containers for all medications used during the 2 weeks before the visit. The interviewer then recorded the name of each medication, the prescribed dose, and frequency of administration from the containers.


Copyright 2008 William Davis,MD