Beware the "false positive" stress test 4. March 2007 William Davis (11) There's a widely-known (among cardiologists) problem with nuclear stress tests. It's called the "false positive." (Nuclear stress tests are known as stress Cardiolites, stress thalliums, stress Myoviews, persantine stress tests, adenosine stress tests)Stress tests, nuclear and otherwise, are helpful for identifying areas of poor blood flow. If an area of poor blood flow is detected and the area is substantial, then there may be greater risk of heart attack and other undesirable events in the relatively near future. What "false positive" means is a stress test that shows an abnormality but it's not true--it is falsely abnormal. There are a number of reasons why this can happen. The problem is that this phenomenon is very common. Up to 20% of nuclear stress tests are false positives. There are indeed situations where there may an abnormality and it is not clear whether it is true or false. This may lead to a justifiable heart catheterization or CT coronary angiogram. But, given the extraordinary number of false positives, there's a lot of gray in interpreting these tests. Hospital staff, in fact, call nuclear medicine "unclear" medicine. It's common knowledge that you can often see just about anything you want to see on a nuclear image of the heart. Abnormalities in the bottom of the heart, the "inferior" wall, are especially common due to the overlap of the diaphragm with the heart muscle, yielding the appearance of reduced blood flow. Defects in the front of the heart heart are common in females with large breasts for the same reasons. The problem: The uncertainty inherent in nuclear stress tests opens the door to the unscrupulous or lazy practitioner. Any blip, tick, or imperfection on the nuclear images serve as carte blanche to drag you into the hospital for procedures. This abusive practice is, in my experience, shockingly common for two reasons: 1) It pays better to do heart catheterizations, and 2) Defensive medicine. What's the disincentive? Only doing the right thing and maintaining a clear conscience. Slim reasons for many of my colleagues--and a lot less money. If you are without symptoms and feel fine, and a nuclear stress test is advised by your doctor, followed by a discussion of an abnormality, insist on a discussion of exactly what is abnormal, just how abnormal, and what the alternatives might be. If you receive unsatisfactory or incomplete answers despite your best effort, it's time for another opinion.
Don't neglect your magnesium 3. March 2007 William Davis (3) Magnesium is kind of boring. So most people don't pay too much attention to it.Magnesium can be important, however. I saw an interesting phenomenon recently. A type I diabetic patient of mine (that is, an adult who developed diabetes as a child), Mitch, was experiencing wide swings in blood sugar: low low's and very high high's (300-400 mg/dl). Mitch's magnesium was only marginally low at 2.0 mEq/L. (Ranges for normal magnesium blood levels are usually 1.3–2.1 mEq/L or 0.65–1.05 mmol/L.) Note that Mitch's blood levels fall within "normal." I do not agree with these "normal" ranges. I shoot for 2.1 to 2.4 mEq/L, which I think is the truly normal range. In addition to eating plenty of raw nuts and green vegetables, Mitch began supplementing magnesium with magnesium citrate, 200 mg twice a day (our preferred supplement form). He reported that the wide swings in blood sugar were nearly eliminated. Mitch's dramatic benefit is just a great illustration of how magnesium can help control blood sugar metabolism. A type I diabetic is more sensitive to the effects, but anyone with type II (adult) diabetes, metabolic syndrome, or just a slightly high blood sugar could benefit from magnesium supplementation. There's a number of ways to accomplish getting sufficient magnesium in your daily regimen. Track Your Plaque members, Be sure to read: Your water may be killing you at http://www.cureality.com/library/fl_03-002magnesium.asp Magnesium: Water to the rescue! at http://www.cureality.com/library/fl_03-010magnesium2.asp
Third heart scan a charm 1. March 2007 William Davis (0) It struck me recently that, for many people, it's not the second but the third heart scan that more commonly shows a reduction in score. I think this is because many people's reaction to their first heart scan is "This can't be. There's no way my arteries have that much plaque." They then follow a half-hearted program to correct their patterns. When the second heart scan shows a significantly higher score, that really catches their attention. This is when they finally buckle down and give it their all.Only the occasional person will, after the first heart scan, seize full control and take their program very seriously. These tend to be highly motivated people. Don't feel too bad if your second heart scan score shows an increase. Look at it for what it represents: feedback on the adequacy of your program.
Metabolic syndrome--cured 27. February 2007 William Davis (0) Peter started out at age 59 at 248 lbs, standing 6 ft tall (BMI = 33.6!). Along with his weight, Peter had the entire panel of phenemena of the so-called "metabolic syndrome", or pre-diabetes:--Triglycerides 238 mg/dl and associated with extremes of excess VLDL and IDL--High blood pressure --Blood sugar 115 mg/dl--High c-reactive protein--Small LDL particles 99% of total LDLInterestingly, Peter's HDL was a surprisingly favorable 58 mg/dl (HDL is usually low in this syndrome). However, when broken down by size, he had nearly zero large, healthy HDL (sometimes called HDL2b). Though total HDL was favorable, most of it was simply ineffective. Peter eliminated snacks and processed foods, particularly bread; increased his reliance on healthy oils and lean proteins; incorporated soy protein; increased vegetables. He added 30 minutes of a rapid walk on a treadmill every day. He added vitamin D to achieve a blood level of 50 ng/dml. He added a magnesium supplement. Peter has lost 31 lbs. in the last year. Weight 207 lbs., BMI 28.1 (desirable <25). Blood sugar: 96 mg/dl; triglycerides: 56 mg/dl; HDL 71 mg/dl with 35% in the large fraction; small LDL 45% of total. Not perfect, but a damn site better. Control of metabolic syndrome is an achievable goal for over 90% of people, just with these simple efforts. We haven't yet had a chance to assess the effect on the progression or regression of Peter's heart scan score, but he has, at the very least, spared himself a future of diabetes and all its complications.
Heart Scan Curiosities #6 27. February 2007 William Davis (0) This is a "slice" from a normal heart scan in a 58 year old woman. Heart scan score zero. Look at the lungs, the dark areas left and right of the heart in the center. The lungs are also normal. Black represents normal density, healthy lung tissue. The white streaking is just normal lung blood vessels. This person doesn't smoke. This woman smokes a pack of cigarettes a day and has done so for 45 years ("45 pack-years"). She had a surprisingly low heart scan score (at age 64) of only 71, despite the smoking. However, look at this woman's lungs. It's a little tough to make out, since the computer graphics loses some of the resolution. But you can see the near absence of lung tissue on both sides. This is an advanced phase of the destructive lung disease, emphysema, from smoking. Even if she quit smoking today, the destroyed lung tissue never grows back. She literally has huge gaps or holes in her lungs where lung tissue used to be. Smoking is among the most destructive, terrible things you can do to your body, short of swallowing strychnine or jumping off a building. Stay as far the heck away from cigarettes as you possibly can. If you are exposed to "secondary" smoke, insist that the person never smoke in your presence. It's not the smell that destroys your lungs or causes coronary plaque (though it is indeed foul), it's the actual smoke.
Should you become a vegetarian? 24. February 2007 William Davis (0) Do you need to become a vegetarian in order to reduce your heart scan score?No. Plain and simple. We’ve had many non-vegetarians drop their scores.That said, are there still advantages to following a vegetarian diet, or some variation on the vegetarian theme?Yes, there are. Let’s put aside the moral or religious arguments in favor of not eating animals—the need to eliminate killing animals for food, elimination of suffering common in modern livestock practices, Kosher considerations, etc. (Not that there aren’t real arguments here. Our focus for this conversation is not, however, the moral dilemma, but the health argument.)Some of the most unhealthy people I’ve ever met, mostly males, are proud carnivores who boast of their prodigious capacities to eat meat. Unfortunately, it’s hard to tease out the ill-effects of excessive meat eating, since these same men also tend to be substantially overweight, smoke, drink excessively, and fail to get exercise unless their job is physically demanding. You know the type.What advantages does a vegetarian obtain? A number of studies have suggested that the reduced saturated fat, reduced exposure to parasites, as well as reduced exposure to the antibiotics and hormones now used routinely in livestock-raising practices, do indeed provide benefits to the vegetarian. Thus, vegetarians tend to be substantially thinner, experience less bowel cancer, have less diabetes and heart disease, and live longer. (If you are interested in reading or seeing more about just how inhumane modern livestock practices are, take a look at the video, "Meet Your Meat" at meat.org. Be sure not to view this after dinner.) Of course, some of the disadvantages of eating animal products diminish when free-range livestock are eaten, i.e., livestock not raised in the inhumane cramped, filthy conditions of livestock factories, but in the open, grazing or rooting freely. These animals tend to have different fat compositions and taste different. The advantages of vegetarianism, however, have blurred in recent years, since many so-called vegetarians have failed to maintain the distinction between naturally-occurring foods and processed foods. So, Ritz Crackers, Oreo cookies, whole wheat bread, and Raisin Bran fit into a vegetarian program, but they’re awful for your health. I’ll occasionally meet a self-proclaimed vegetarian who looks every bit as unhealthy as a conventionally eating American, that is, overweight, pre-diabetic person with a developing heart scan score.So it is not necessary to be vegetarian to reduce your score. You might consider vegetarianism for other reasons, such as moral considerations, or to reduce your risk for cancer. But it is not necessary to drop your heart scan score. A non-processed food diet? Now that's is worth giving serious consideration.
Let's make it a lot easier 24. February 2007 William Davis (0) The American Heart Association just released a new set of consensus guidelines on heart disease prevention in women: Evidence-Based Guidelines for Cardiovascular Disease Prevention in Women: 2007 Update For those of you following the Heart Scan Blog and the Track Your Plaque program, there will be little new in the guidelines. In fact, you'll wonder if the date on the front of the report should be 1987, rather than 2007. Did you know that you should exercise and eat healthy?Take a look at the list of risk factors for coronary vascular disease (CVD) listed in the report:Major risk factors for CVD, including:Cigarette smokingPoor dietPhysical inactivityObesity, especially central adiposityFamily history of premature CVD (CVD at <55>Progress: You'll notice that buried inside the list is "Evidence of subclinical vascular disease (e.g., coronary calcification)". Just a few short years ago that wouldn't have even been included.The Track Your Plaque contention is that, for the great majority of women, this list could be shortened to one item: coronary calcification. As time goes on, the people who argue and draft these guidelines will come to the realization that coronary calcification is the disease--it's not a risk for the disease, a predictor of the disease. Coronary calcification is the disease itself. The other items on the list recede way into the background when you know whether or not coronary atherosclerosis is present, i.e., you know your heart scan score (of coronary calcium).The report goes to say such things as taking a little bit of fish oil is a good idea, maintaining a normal blood pressure is desirable. . . yada yada yada. You've heard this all before.A major part of the treatment guidelines are devoted to LDL cholesterol reduction with statin agents. You shouldn't be surprised. It's amazing what $22 billion dollars in revenues will buy.A closing paragraph reads:'Population-wide strategies are necessary to combat thepandemic of CVD in women, because individually tailoredinterventions alone are likely insufficient to maximally preventand control CVD. Public policy as an intervention toreduce gender-based disparities in CVD preventive care andimprove cardiovascular outcomes among women must becomean integral strategy to reduce the global burden ofCVD.'Say that again? If you understood that bit of gobbledygook, you're a lot smarter than me.Don't look to the American Heart Association report for any new ideas. It reminds me of the politician who reminds everybody of what a devoted family man he is: It has nothing to do with his policies. It just makes him look good. If compared to prior report, the 2007 report does indeed represent progress--but just oh so little.
No wonder nobody talks about real prevention 23. February 2007 William Davis (0) Take a look at this eye-opening statement taken from a well-written NY Times article about Dr. Arthur Agatston, the South Beach Diet and now South Beach Heart Program books:'We have made major improvements in prevention,” Dr. Gregg W. Stone, the director of cardiovascular research at Columbia University, says. “But it’s difficult. It takes frequent visits, a close relationship between a physician and a patient and a very committed patient.'Which is exactly the atmosphere Dr. Agatston’s practice tries to create. Nurses there give patients specific cholesterol goals to meet and help them deal with the side effects of the drugs they are taking. A nutritionist, Marie Almon, meets with patients frequently enough to discuss real-life issues like how to stick to a high-fiber Mediterranean diet even on a cruise or a business trip. There is only one problem with this shining example of a medical practice: it is losing money.From NY Times, January 24, 2007. What’s a Pound of Prevention Really Worth? (Find the full text at http://www.nytimes.com/2007/01/24/business/24leonhardt.html?ex=1172379600&en=4268a738e82857da&ei=5070.)It gets at one of the fundamental reasons why your cardiologist will probably never talk to you about an intense approach to prevention: it doesn't pay. Because John Q. Cardiologist focuses, instead, on how to increase procedural volume, train how to put in the next best defibrillator, etc., there is little consciousness about preventive issues. Just the simple matter of taking fish oil causes their eyes to glaze over. That's why the Track Your Plaque program exists: it is a portal for the kind of information you cannot get. Of course, you could read all the scientific studies, attempt years of trial and error, and try to gain a sense of how to do this yourself. Or you could follow this program. We are proud to not worry about generating procedural profits. We ar unbiased by drug or medical device money. We say exactly what we mean. By the way, we are on a current push to really "beef-up" our online discussions via real-time chat. Long-term, we'd like to be able to offer chat with our staff many hours every day. Be patient. It will happen, but not today.
HDL and vitamin D 22. February 2007 William Davis (5) I know of no published reports on this question, but I've now seen numerous people experience significant jumps in HDL with raising blood vitamin D to 25-OH-vitamin D3. Last week, for example, I had a man who had struggled with raising HDL from a starting level of 28 mg/dl. On niacin, exercise, weight loss, fish oil, red wine, and cilostazol (a prescription agent that I use occasionally that raises HDL), his HDL rose to 41 mg/dl--better, but hardly to our goal. I added vitamin D, 4000 units, and raised his 25-OH-vitamin D3 level from 22 ng/ml to 53 ng/ml. Next HDL: 73 mg/dl! Small LDL improves along with a rise in HDL. Not everybody's response is this dramatic. I see more typical rises of 5 to 10 mg/dl every day. I'm uncertain of why the response is inconsistent, though people who begin with lower vitamin D levels seem to experience a larger HDL increase. I wonder if the partial normalization of insulin and glucose responses is at work, or some anti-inflammatory effect. Vitamin D provides so many other benefits, as well as HDL-raising. I hope you've gone to the effort to have your blood level checked to determine your replacement need. If not, now's the time. February represents your nadir (lowest point) for 25-OH-vitamin D3 blood levels.
Even more Michael Pollan 20. February 2007 William Davis (0) "Eat food. Not too much. Mostly plants. That, more or less, is the short answer to the supposedly incredibly complicated and confusing question of what we humans should eat in order to be maximally healthy. I hate to give away the game right here at the beginning of a long essay, and I confess that I’m tempted to complicate matters in the interest of keeping things going for a few thousand more words. I’ll try to resist but will go ahead and add a couple more details to flesh out the advice. Like: A little meat won’t kill you, though it’s better approached as a side dish than as a main. And you’re much better off eating whole fresh foods than processed food products. That’s what I mean by the recommendation to eat “food.” Once, food was all you could eat, but today there are lots of other edible foodlike substances in the supermarket. These novel products of food science often come in packages festooned with health claims, which brings me to a related rule of thumb: if you’re concerned about your health, you should probably avoid food products that make health claims. Why? Because a health claim on a food product is a good indication that it’s not really food, and food is what you want to eat."Michael Pollan, author of my latest favorite book, The Omnivore's Dilemma, wrote a wonderful piece for the New York Times entitled "Unhappy Meals". You can find the full text at http://www.nytimes.com/2007/01/28/magazine/28nutritionism.t.html?ex=1172120400&en=a78c20f4da0cdc7b&ei=5070. (Another favorite read of mine, The Fanatic Cook's Blog at , alerted me to Pollan's article. Incidentally, take a look at the Fanatic Cook's latest posts--very entertaining and informative. She's got incisive insight into foods as well as a great sense of humor.)Pollan goes on to say that... "...typical real food has more trouble competing under the rules of nutritionism, if only because something like a banana or an avocado can’t easily change its nutritional stripes (though rest assured the genetic engineers are hard at work on the problem). So far, at least, you can’t put oat bran in a banana. So depending on the reigning nutritional orthodoxy, the avocado might be either a high-fat food to be avoided (Old Think) or a food high in monounsaturated fat to be embraced (New Think). The fate of each whole food rises and falls with every change in the nutritional weather, while the processed foods are simply reformulated. That’s why when the Atkins mania hit the food industry, bread and pasta were given a quick redesign (dialing back the carbs; boosting the protein), while the poor unreconstructed potatoes and carrots were left out in the cold.Of course it’s also a lot easier to slap a health claim on a box of sugary cereal than on a potato or carrot, with the perverse result that the most healthful foods in the supermarket sit there quietly in the produce section, silent as stroke victims, while a few aisles over, the Cocoa Puffs and Lucky Charms are screaming about their newfound whole-grain goodness." Not everything Pollan says is new, but he says it so eloquently and cleverly that he's worth reading. If you haven't yet read Omnivore's Dilemma, or just want a condensed version of the book, the New York Times piece is a great piece of the world according to Michael Pollan.
Plaquology 13. October 2008 William Davis (3) Plaquology: A new term. Plaquology: def: (plaque-: atherosclerotic plaque; -ology: study of.) The study of atherosclerotic plaque, originating in the early 21st century during the time period when the material underlying atherosclerosis gained recognition as a measure superior to "risk factors" for cardiovascular disease. Previous to the plaque concept, blood measures of cholesterol and adverse lifestyle habits, such as smoking and sedentary lifestyle, alone had been used to predict potential for cardiovascular events. With acceptance of the concept of plaque measurement, the concept of risk factors was abandoned.Look it up in the current Oxford Dictionary of the English Language, or Webster's Dictionary, and I'm afraid that you still won't find plaquology . . . but you should. I'm currently rewriting many parts of the Track Your Plaque book. The rewriting process has caused me to review just how much we've learned these past few years. One of the phenomena that fascinates me is that we now have non-medical people--teachers, software people, engineers, bankers, bed and breakfast owners, retired businesspeople, etc.--all discussing the finer points of coronary atherosclerotic plaque--plaquology--what constitutes plaque, what triggers plaque inflammation, how to quantify potential for plaque rupture or plaque quiescence, what effect various treatments have on plaque composition and behavior, etc. We now have a legion of Plaquologists!I'm very proud of our Plaquologists. Having devoted themselves to the study of plaque, their level of knowledge now exceeds that of 99% of practicing physicians, including my colleagues, the cardiologists. While cardiologists spend their day squashing/cutting/vaporizing plaque, they are no more experts in plaquology than a carpenter is an expert in trees. More often than not, cardiologists view plaque as just something that gets in their way, rather than the quantifiable, modifiable, reversible material that we can exert control over.One of the software tools currently in the works for the Track Your Plaque website is a certification process. Members will be able to gain a "certification" in various topics relevant to plaquology, such as plaque quantification, lipoprotein testing, and nutritional supplements. How about a Doctor of Plaquology?
Thyroid perspective update 10. October 2008 William Davis (18) Since the publication of the extraordinary HUNT Study relating the entire spectrum of thyroid function and heart issues, I have been vigorously and systematically examining thyroid function in numerous patients. While there's no news in relating flagrant low thyroid function with triggering heart disease in several forms, the cut-off between low thyroid and normal thyroid has been a matter of dispute for decades. In the early 20th century, low thyroid function wasn't diagnosed until someone gained 40 lbs, displayed extravagant amounts of edema (water retention) in the legs and huge bags under the eyes, hair fell out in clumps, and often eventually proved fatal. At autopsy, these unfortunates also showed advanced and extensive quantities of coronary atherosclerotic plaque. Low thyroid is usually diagnosed on the basis of the blood test, thyroid stimulating hormone, or TSH. TSH is a pituitary gland hormone responsible for stimulation of thyroid function. When thyroid function flags, the pituitary increases TSH release. Thus, a high TSH signals lower thyroid hormone levels. The difficulty is in distinguishing normal thyroid function from low thyroid function judged by TSH levels. As the years have passed, in fact, the cut-off for "normal" TSH has drifted lower and lower. The HUNT Study, I believe, clinches the argument: A TSH of 1.5 or lower, perhaps even 1.0 or lower, is desirable to eliminate the excess cardiovascular risk provided by an underactive thyroid, not to mention feel better: more energetic, clearer thinking, greater well-being. Having now applied this renewed appreciation for thyroid, I have come to believe that:--Low thyroid function, even subtle levels, are rampant and far more common than ever previously thought. In my office practice, the case could be made that several people per day are marginally or mildly hypothyroid (low in thyroid). --Restoration of optimal thyroid levels facilitates correction of lipid measures, especially LDL cholesterol and, to a lesser degree, lipoprotein patterns dependent on the insulin axis such as triglycerides and small LDL. It's a lot happier way to correct lipids than statins. I don't discount the value of feeling better. People who feel better--more energetic, more upbeat, clearer thinking--tend to do better in health overall. If thyroid restoration is a part of that equation, then greater attention should be paid to this facet of health on our way to optimal heart health. Though I sometimes feel like an endocrinologist dispensing desiccated thyroid (rarely the synthetic T4), I believe that this has been a previously neglected and important part of our effort to achieve coronary plaque stabilization and reversal.
Accidental Health 9. October 2008 William Davis (2) "I shall never have smallpox for I have had cowpox; I shall neverhave an ugly pockmarked face."Such was the idle comment made by a milkmaid to Edward Jenner in 1768 when Jenner was 19, a remark that later prompted his investigations into using isolates of cowpox injected into humans as the first vaccination against the devastations of the European epidemic of smallpox. (A caricature of Jenner administering cowpox vaccine to people, causing them to sprout bovine appendages. Image courtesy Wikipedia and the Library of Congress.)When I look back, something similar has happened here. Although the Track Your Plaque program is intended to stop and reverse coronary plaque using the only available means of tracking coronary plaque, i.e., heart scans, an unintended panel of benefits follow: --People lose weight, often dramatically--People gain greater energy--Thinking is clearer, emotions more stable--Sleep is deeper--Bone density increases--Physical strength and coordination improve--Winter blues dissipate--Blood sugar drops dramatically--Blood pressure dropsCholesterol (lipid) panels also settle to values that most physicians deem impossible or impractical, given our target of 60:60:60, i.e., LDL 60 mg/dl or less, HDL 60 mg/dl or higher, triglycerides 60 mg/dl or less. And medications are not always necessary to achieve these values. (When I show these values to my colleagues, they declare them flukes, unobtainable only in select people with high doses of medications.) I didn’t set out to find the next weight loss solution, nor the key to boundless energy. My goal was "simpler": create a program of heart health. I am, after all, a cardiologist. I was so intently focused on achieving incremental improvements over the steps leading to heart disease prevention that I failed to recognize the profound phenomena that accompanied it: people were quicker, smarter, thinner, and healthier.In other words, I believe that we have inadvertently created a program of super health and performance. Ironically, most people don't want to talk about heart disease, let alone reversal of heart disease. They do want to talk about getting thinner, feeling more energetic, living longer, better cholesterol values, etc. Perhaps there's a lesson in this.
Livin' La Vida Low Carb interview 7. October 2008 William Davis (5) I recently provided an interview for Livin' La Vida Low Carb's irrepressible Jimmy Moore. Jimmy runs a fun set of blogs, webcasts, and the like to broadcast this message of reducing carbohydrates in the diet. He credits his 210 lb weight loss to a strict low-carbohydrate and exercise program. For the interview, just go to The Livin' the Vida Low Carb Show, Episode 185, or click here. And click here for Part 2 For more of Jimmy Moore's spin on the entire low-carbohydrate diet experience, he maintains several popular blogs, including Carb Wire and The Livin' La Vida Low-Carb Blog.
Wheat withdrawal: How common? 5. October 2008 William Davis (11) In response to the recent Heart Scan Blog poll,Have you experienced fatigue and mental fogginess with stopping wheat, i.e., "wheat withdrawal"? the 104 respondents said:Yes, I have experienced it: 26 (25%) No, I stopped wheat and did not experience it: 65 (62%) I'm not sure: 3 (2%) I haven't tried it but plan to: 7 (6%) I haven't tried it and don't plan to: 3 (2%) So 25% of respondents reported experiencing the fatigue and mental fogginess of wheat withdrawal. This is similar to what I observe in my practice. I counsel many patients to consider the elimination of wheat, as well as cornstarch products, in an effort to regain control over:--Weight --Appetite--Low HDL--High triglycerides--Small LDL--High blood sugar--High blood pressure All of these issues respond--often dramatically--to elimination of wheat and cornstarch. Why would there be undesirable effects of eliminating wheat?One clear issue is that elimination of wheat and other sugar-equivalents deprives your body of glucose. Your body then needs to resort to fatty acid metabolism to generate energy. Apparently, some people are inefficient at this conversion, having subsisted on carbohydrates for the last few decades of their lives. However, as fatty acid metabolism kicks in, energy generation improves. That is my (over-)simplified way of reasoning it through. However, are there other explanations behind the mental fogginess, drop in energy, and overwhelming sleepiness? Some readers of this blog have suggested that, since opioid-like sequences (i.e., amino acide sequences that activate opiate receptors) are present in wheat, perhaps withdrawal from wheat represents a lesser form of opiate withdrawal. I find this a fascinating possibility, though I know of no literature devoted to establishing a cause-effect relationship. Whatever the mechanism, I find it very peculiar that this food widely touted by the USDA, American Heart Association, and other agencies actually triggers a withdrawal syndrome in approximately 25% of people. Spinach does not trigger withdrawal. Nor does flaxseed, olive oil, almonds, and countless other healthy foods. Then why would whole wheat grains be lumped with other healthy foods?
Treat the patient, not the test 5. October 2008 William Davis (0) "Treat the patient, not the test."That is a common "pearl" of medical wisdom often passed on during medical training. It refers to the fact that we should always view any laboratory or imaging test in the context of the live, human patient and not just treat any unexpected value that doesn't seem to make sense. I raise this issue because it recently came up on a discussion on the Track Your Plaque Forum. A Member with a high heart scan score of around 1100 was advised by his doctor that it should be ignored, because he'd prefer to treat the patient, not the test. The patient is apparently slender, physically active, and entirely without symptoms, with favorable cholesterol values as well. The high heart scan score didn't seem to jive with the appearance of the patient, as viewed by this doctor. This common phrase is meant to impart wisdom. It is a reminder that we treat real people, not just a jumble of laboratory values. But the unspoken part of the equation is that judgment needs to be applied. A well looking person who shows an unexpected rise in white blood cell count could just have a screwy result, or could have leukemia. Liver tests (AST, ALT) that top 400 could represent a fluke, or dehydration incurred during a long workout, or hepatitis from a long ago blood transfusion. Yes, treat the patient. But don't be an idiot and entirely dismiss the signficance of an unexpected laboratory or imaging test. A heart scan score of 1100 should be as readily dismissed as discovering a white blood cell count of 90,000 (normal is less than 12,000), or a 5 cm mass in the lung. The absence of symptoms or the failure of conventional risk factors to suggest causation is insufficient reason to dismiss the concrete findings of a test. In this particular person, dismissing the significance of the heart scan finding by suggesting that the doctor should treat the patient, not the test, is tantamount to:--Colossal ignorance--Malpractice--A certain sentencing of the hapless patient to future major heart procedures, heart attack or death (20-25% likelihood every year, or a virtual certainty over the next 5 years). There is an ounce of wisdom in this old medical pearl. But there's also plenty of room for a knuckleheaded doctor to misconstrue and abuse its meaning for the sake of covering up his/her ignorance, laziness, or lack of caring.
Does high cholesterol cause heart disease? 3. October 2008 William Davis (15) How often does someone develop coronary heart disease from high cholesterol alone?Believe drug industry propaganda and you'd think that everyone does. Physicians have bought into this concept also, driving the $27 billion annual sales in statin cholesterol drugs. In my experience, I can count the number of people who develop coronary disease from high cholesterol alone on one hand. It happens--but rarely. That's not to say that cholesterol is not an issue. That rant populates many of the kook websites and conversations on the internet that argue that high cholesterol is a surrogate for some other health issue, or that it is part of a medical conspiracy. The problem with conventional measurement of cholesterol is that it ignores the particle size issue: whether particles are large or small. Small LDL are flagrant causes of coronary atherosclerotic plaque. Large LDL is a rather meager cause. Simple cholesterol measurement also ignores the presence of other factors that lead to heart disease, like lipoprotein(a) and vitamin D deficiency. Conventional total and LDL cholesterol do not distinguish between large and small particles, nor reveal the presence of other hidden patterns. An LDL cholesterol of 150 mg/dl, for instance, may contain 100% large LDL--a relatively good situation that by itself is unlikely to cause heart disease, or it might contain 100% small LDL--a very bad situation that is likely to cause heart disease. Just knowing that LDL is 150 mg/dl tells you almost nothing. In 2008, most people have some mixture of the two, particularly with the proliferation of "healthy whole grains" in the American diet, foods that trigger formation of small LDL. The imprecision and uncertainty of conventional total and LDL cholesterol has provided ammunition for some to discount the entire cholesterol concept. And they are right to a degree: cholesterol by itself is indeed a lousy predictor of heart disease. But small LDL is a very reliable predictor of potential for heart disease. Dismissing the entire concept because the standard measurement stinks is not right, either. It is therefore an unfortunate oversimplification to say that high cholesterol causes heart disease or that it doesn't. It can--but not always, depending on size and other factors. In my view, it is therefore irreponsible to treat total or LDL cholesterol without knowledge of particle size. I've seen this play out many times: Someone with an LDL cholesterol of 150 mg/dl but all large still gets prescribed a statin drug by his/her doctor. Or someone with an LDL of 100 mg/dl--generally "favorable" by most standards--is not treated but it is all small and the person is truly at high risk. (Also, knowledge that all LDL particles are small does not mean that statins are the preferred agent. In my view, they are not.)
Are humans meant to be omnivores? 28. September 2008 William Davis (24) Are humans meant to be omnivores?Does the ideal human diet include animal products like meat, fish, cheese, eggs, and dairy products? Or should the ideal diet be devoid of all animal products?a vegetarian diet? Though the argument is distorted by modern food processing methods (e.g., factory farming, long-term administration of antibiotics), convenience foods, and pseudo-foods crafted by food manufacturers, there are, obviously, proponents of both extremes. The Atkins’ diet, for instance, advocates unrestricted intake of animal products, regardless of production methods or curing (sausage and bacon). At the opposite extreme are diets like Ornish (Dr. Dean Ornish’s Program for Reversal of Heart Disease) and the experiences of Dr. Colin Campbell, articulated in his studies and book, The China Study, in which he lambasts animal products, including dairy, as triggers for cancer and heart disease.So which end of the spectrum is correct? Or ideal? For the sake of argument, let's put aside philosophical questions (like not wanting eat animal products because of aversion to killing any living being) or ethical concerns (inhumane treatment of farm animals, cruel slaughtering practices, etc.). Does the inclusion of animal products provide advantage? Disadvantage?The traditional argument against animal products has been saturated fat. If we accept that we’ve demoted the saturated fat question to a place far down the list of importance (though this is yet another argument to discuss another time), several questions emerge: • If humans were meant to be vegetarian, why do omega-3 fatty acids (mostly from wild game and fish) yield such substantial health benefits, including dramatic reduction in sudden death from heart disease? • Why would vitamin K2 (from meats and milk, as well as fermented foods like natto and cheese), obtainable in only the tiniest amounts on a vegetarian diet, provide such significant benefits on bone and cardiovascular health? • Why would vitamin B12 (from meats) be necessary to maintain a normal blood count, prevent anemia, keep homocysteine at bay, and lead to profound neurologic dysfunction when deficient? Omega-3 fatty acids and vitamins K2 and B12 cannot be obtained in satisfactory quantities from a pure vegetarian diet. The consequences of deficiency are not measured in decades, but in a few years. The conclusion is unavoidable: Evolutionarily, humans are meant to consume at least some foods from animal sources.That's not to say that we should gorge ourselves on animal products. Gout (excessive uric acid) and kidney stones are among the unhealthy consequences of excessive quantities of meats in our diets. It pains me to say this, since I’ve always favored a vegetarian lifestyle, mostly because of philosophical concerns, as well as worries about the safety of our factory farm-raised livestock and rampant inhumane practices. But, stepping back and objectively examining what nutritional approach appears to stack the odds in favor of optimal health, I believe that only one conclusion is possible: Humans are meant to be omnivorous, meant to consume some quantity of animal products in addition to vegetables, fruits, nuts, and other non-animal products. The question is how much?
Are you wheat-free? 24. September 2008 William Davis (25) According to the recent Heart Scan Blog poll, Are you wheat-free?, the 173 respondents said:Yes, I am free of wheat products. 87 (50%) No, I include wheat products in my diet. 73 (42%) I'm not sure. 1 (0%)I think you're nuts. 12 (6%) That's kind of what I expected. There are people who have eliminated wheat and experienced nothing except a feeling of deprivation. These people are in the minority. Though the poll was not set up to reflect this (i.e., asked who tried it and experienced no perceptible benefit), in my experience, this applies to about 20% of people. Little happens with elimination of wheat beyond modest weight loss. Those are the people who generally think I'm nuts. Or, these people may have been brainwashed by "official" agencies like the USDA, the American Diabetes Association, and American Heart Association and the constant marketing of (high markup) grain products like Cheerios and Shredded Wheat . Some people are really uncomfortable going against the "grain" of popular public opinion. Then there are the people who try to eliminate wheat and fail. They can't deal with the overwhelming fatigue, mental fog, and moodiness that comes with withdrawal from wheat, the phenomenon of converting from a sugar-burning metabolism to a fat-burning metabolism. Although wheat withdrawal usually runs its course in 2-5 days, some people find it intolerable. (That would be another fun poll to run: Have you experienced wheat-withdrawal?) Occasionally, the withdrawal is replaced by endless cravings, a phenomenon that applies to only about 10% of people. These are the true "wheat addicts." These are the people who eliminate wheat, lose 40 lbs, then regain it when they have one cracker and the floodgates of impulse control crumble. Then there are the majority, 50% in the poll, though more like 70% in my face-to-face experience. Why is my experience skewed? Well, the people I deal with every day come because of coronary disease in some form (abnormal heart scan score, for instance) or because of lipid or lipoprotein abnormalities. So my experienced is skewed towards people who are likely to have something abnormal, such as high triglycerides or small LDL particles, both of which are created by including wheat in the diet. This last group also shows unexpected effects of wheat elimination: substantial weight loss, dramatic reductions in blood sugar and triglycerides, increase in HDL, reductions in small LDL, reduction in c-reactive protein and other inflammatory measures. Appetite shrinks considerably. Not uncommonly, improved well-being, reduction in bowel complaints like cramping or "irritable bowel syndrome" is experienced, some rashes clear, occasionally arthritis will improve. See below for some of the testimonials to this experience. When I first set out to advise people to eliminate wheat, I did it because I reasoned that it would be a quick and simple way to get people to reduce blood sugars and help correct the ubiquitous metabolic syndrome that afflicts nearly 50 million Americans now. And it did indeed accomplish that simple goal. But I did not expect all the other benefits to develop, the dramatic weight loss, improved well-being, reduction in hunger, etc.I view wheat elimination as an easy-to-remember, digestible way to obtain enormous health benefits in a coronary plaque-control program, one that works for most--but not all--people. And I relate this experience not to sell you something, but to simply relate what I see as the truth, a way that is contrary to conventional advice yet works enormously well. Unsolicited testimonials of people who have successfully been wheat-free:Barbara W said:It's true! We've done it. My husband and I stopped eating all grains and sugar in February. At this point, we really don't miss them any more. It was a huge change, but it's worth the effort. I've lost over 20 pounds (10 to go)and my husband has lost 45 pounds (20 to go). On top of it, our body shapes have changed drastically. It is really amazing. I've got my waist back (and a whole wardrobe of clothes) - I'm thrilled.I'm also very happy to be eating foods that I always loved like eggs, avocados, and meats - without feeling guilty that they're not good for me.With the extremely hot weather this week in our area, we thought we'd "treat" ourselves to small ice cream cones. To our surprise, it wasn't that much of a treat. Didn't even taste as good as we'd anticipated. I know I would have been much more satisfied with a snack of smoked salmon with fresh dill, capers, chopped onion and drizzled with lemon juice.Aside from weight changes, we both feel so much better in general - feel much more alert and move around with much greater flexibility, sleep well, never have any indigestion. We're really enjoying this. It's like feeling younger.It's not a diet for us. This will be the way we eat from now on. Actually, we think our food has become more interesting and varied since giving up all the "white stuff". I guess we felt compelled to get a little more creative.Eating out (or at other peoples' places) has probably been the hardest part of this adjustment. But now we're getting pretty comfortable saying what we won't eat. I'm starting to enjoy the reactions it produces.Weight loss, increased energy, less abdominal bloating, better sleep--I've seen it many times, as well. Dotslady said:I was a victim of the '80s lowfat diet craze - doc told me I was obese, gave me the Standard American Diet and said to watch my fat (I'm not a big meat eater, didn't like mayo ... couldn't figure out where my fat was coming from! maybe the fries - I will admit I liked fries). I looked to the USDA food pyramid and to increase my fiber for the constipation I was experiencing. Bread with 3 grams of fiber wasn't good enough; I turned to Kashi cereals for 11 years. My constipation turned to steattorrhea and a celiac disease diagnosis! *No gut pains!* My PCP sent me to the gastroenterologist for a colonscopy because my ferritin was a 5 (20 is low range). Good thing I googled around and asked him to do an endoscopy or I'd be a zombie by now.My symptoms were depression & anxiety, eczema, GERD, hypothyroidism, mild dizziness, tripping, Alzheimer's-like memory problems, insomnia, heart palpitations, fibromyalgia, worsening eyesight, mild cardiomyopathy, to name a few.After six months gluten-free, I asked my gastroenterologist about feeling full early ... he said he didn't know what I was talking about! *shrug*But *I* knew -- it was the gluten/starches! My satiety level has totally changed, and for the first time in my life I feel NORMAL!Feeling satisfied with less is a prominent effect in my experience, too. You need to eat less, you're driven to snack less, less likely to give in to those evil little bedtime or middle-of-the-night impulses that make you feel ashamed and guilty. An anonymous (female) commenter said:My life changed when I cut not only all wheat, but all grains from my diet.For the first time in my life, I was no longer hungry -no hunger pangs between meals; no overwhelming desire to snack. Now I eat at mealtimes without even thinking about food in between.I've dropped 70 pounds, effortlessly, come off high blood pressure meds and control my blood sugar without medication.I don't know whether it was just the elimination of grain, especially wheat, or whether it was a combination of grain elimnation along with a number of other changes, but I do know that mere reduction of grain consumption still left me hungry. It wasn't until I elimnated it that the overwhelming redution in appetite kicked in.As a former wheat-addicted vegetarian, who thought she was eating healthily according to all the expert advice out there at the time, I can only shake my head at how mistaken I was.Stan said:It's worth it and you won't look back! Many things will improve, not just weight reduction: you will think clearer, your reflexes will improve, your breathing rate will go down, your blood pressure will normalize. You will never or rarely have a fever or viral infections like cold or flu. You will become more resistant to cold temperature and you will rarely feel tired, ever!Ortcloud said:Whenever I go out to breakfast I look around and I am in shock at what people eat for breakfast. Big stack of pancakes, fruit, fruit juice syrup, just like you said. This is not breakfast, this is dessert ! It has the same sugar and nutrition as a birthday cake, would anyone think cake is ok for breakfast ? No, but that is exactly the equivalent of what they are eating. Somehow we have been duped to think this is ok. For me, I typically eat an omelette when I go out, low carb and no sugar. I dont eat wheat but invariably it comes with the meal and I try to tell the waitress no thanks, they are stunned. They try to push some other type of wheat or sugar product on me instead, finally I have to tell them I dont eat wheat and they are doubly stunned. They cant comprehend it. We have a long way to go in terms of re-education.Yes. Don't be surprised at the incomprehension, the rolled eyes, even the anger that can sometimes result. Imagine that told you that the food you've come to rely on and love is killing you! Anne said:I was overweight by only about 15lbs and I was having pitting edema in my legs and shortness of breath. My cardiologist and I were discussing the possible need of an angiogram. I was three years out from heart bypass surgery.Before we could schedule the procedure, I tested positive for gluten sensitivity through www.enterolab.com. I eliminated not only wheat but also barley and rye and oats(very contaminated with wheat) from my diet. Within a few weeks my edema was gone, my energy was up and I was no longer short of breath. I lost about 10 lbs. The main reason I gave up gluten was to see if I could stop the progression of my peripheral neuropathy. Getting off wheat and other gluten grains has given me back my life. I have been gluten free for 4 years and feel younger than I have in many years.There are many gluten free processed foods, but I have found I feel my best when I stick with whole foods.Ann has a different reason (gluten enteropathy, or celiac disease) for wanting to be wheat-free. But I've seen similar improvements that go beyond just relief of the symptoms attributable to the inflammatory intestinal effects of gluten elimination. Wccaguy said:I have relatively successfully cut carbs and grains from my diet thus far.Because I've got some weight to lose, I have tried to keep the carb count low and I've lost 15 pounds since then.I have also been very surprised at the significant reduction in my appetite. I've read about the experience of others with regard to appetite reduction and couldn't really imagine that it could happen for me too. But it has.A few weeks ago, I attended a party catered by one of my favorite italian restaurants and got myself offtrack for two days. Then it took me a couple of days to get back on track because my appetite returned.Check out Jimmy Moore's website for lots of ideas about variations of foods to try. The latest thing I picked up from Jimmy is the good old-fashioned hard boiled egg. Two or three eggs with some spicy hot sauce for breakfast and a handful of almonds mid-morning plus a couple glasses of water and I'm good for the morning no problem.I find myself thinking about lunch not because I'm really hungry but out of habit.The cool thing too now is that the more I do this, the more I'm just not tempted much to do anything but this diet.
No more canned foods 21. September 2008 William Davis (12) If you haven't already caught the news, it's time to eliminate canned foods and exposure to plastics that contain the chemical, bisphenol A (BPA). A worrisome and unexpected association with heart disease and diabetes has been found. This issue has been debated for some years ever since scientists at the NIH detected BPA in the blood samples of 93-95% of Americans, with consumer protection advocates calling for more research or even the outright banning of BPA , while industry representatives have argued that the data fail to conclusively prove adverse health effects.Well, the argument has been tilted heavily in favor of increased consumer protection with the publication of a study in the Journal of the American Medical Association by Dr. Iain Lang and associates at the University of Exeter, UK, and the University of Iowa. Their study, released Sept. 17, 2008, Association of urinary bisphenol A concentration with medical disorders and laboratory abnormalities in adults, persuasively demonstrated a 40% increased incidence of coronary heart disease, heart attack, and diabetes with increasing exposure to BPA (as judged by urine levels) among the nearly 1500 adults aged 18-74 years. People with coronary heart disease had double the blood level of BPA compared to those without.In addition, higher urine levels of BPA were associated with abnormalities of two liver tests, GGT and alkaline phosphatase. Interestingly, although much of the debate over adverse health effects of BPA have centered around concern over cancer and reproductive risks, an association with cancer did not hold. (No analysis for reproductive issues was conducted in these adults, since most of the concern is for children exposed through polycarbonate baby bottle use. Some BPA critics have raised questions like low birth weight developing from exposure.) No relationship to thyroid disease was identified, also. The editorial accompanying the study added some sharp commentary:"Subsequent to an unexpected observation in 1997, numerous laboratory animal studies have identified low-dose drug-like effects of BPA at levels less than the dose used by the US Food and Drug Administration and the Environmental Protection Agency to estimate the current human acceptable daily intake dose (ADI) deemed safe for humans. These studies have shown adverse effects of BPA on the brain, reproductive system, and--most relevant to the findings of Lang et al--metabolic processes, including alterations in insulin homeostasis and liver enzymes. . . For example, when adults rats were fed a 0.2 microgram/kg per day dose of BPA for 1 month (a dose 250 times lower than the current ADI), BPA significantly decreased the activities of antioxidant enzymes and increased lipid peroxidation, thereby increasing oxidative stress. When adult mice were administered a 10 microgram/kg dose of BPA once a day for 2 days ( a dose 5 times lower than the ADI), BPA stimulated pancreatic beta cells to release insulin." This study, piled on top of the worrisome literature that precede it, are enough for me: No more tin cans (which are lined with BPA), no more hard plastics labeled with recycling code #7 or #3, no more polycarbonate water bottles (the hard ones, often brightly colored). Microwaveable-safe may also mean human-unsafe, as highlighted by this damning assurance from the Tupperware people that BPA is not a health hazard. The National Toxicology Program also issued these advice in response to the Lang study to reduce BPA exposure (reported by the Washington Post) : · Don't microwave polycarbonate plastic food containers. Polycarbonate may break down from overuse at high temperatures and release BPA. (Manufacturers are not required to disclose whether an item contains BPA, but polycarbonate containers that do usually have a No. 7 on the bottom.)· Reduce use of canned foods, especially acidic foods such as tomatoes that can accelerate leaching of BPA from plastic can linings. Opt for soups, vegetables and other items packaged in cardboard "brick" cartons, made of safer layers of aluminum and polyethylene plastic (labeled No. 2).· Switch to glass, porcelain or stainless-steel containers, particularly for hot food or liquids.· Use baby bottles that are BPA-free; in the past year, most major manufacturers have developed bottles made without BPA.