Diabetes: Better than hedge funds 7. March 2011 William Davis (23) Diabetes is where the action is. While, for virtually all of history, type 2 diabetes was an uncommon condition of adults, the disease has spread so much to all levels of American society that even kids are now developing the adult form. Researchers from the Center for Disease Control and Prevention predict that, by 2050, one in three adults will be diabetic. The diabetes market is booming, handily surpassing growth of the oil industry, the housing market, even technology. It makes Bernie Madoff’s billions look like small potatoes. In health, few markets are growing as fast as diabetes—-not osteoporosis, not heart disease, not cancer. Americans are getting fat from carbohydrate consumption, becoming diabetic along with it. While kids hanging around the convenience store gulp down 26 teaspoons of sugar in 32-ounce sodas and 56-grams-of-sugar in 16-ounce frozen ices, health-minded adults are more likely eating two slices of 6-teaspoons sugar-equivalent “healthy whole grain” bread, wondering why last year’s jeans are too tight. The U.S. is not the only nation affected. Globally, 2.8% of the world’s population are diabetic, a number expected to double over the next 20 years. Pharmaceutical companies boast double-digit growth for diabetes drugs, growth rates that keep profit-hungry investors happy. Merck’s Januvia, for instance, introduced in 2006, recently catalogued 30% growth in sales, with annual sales approaching $1 billion. Recently FDA-approved Victoza, requiring once-a-day injection, is expected to reap $4 billion in sales per year for manufacturer Novo Nordisk. Such numbers can only warm a drug company CEO’s heart. Most diabetics don’t just take one medication, but several. A typical regimen for an adult diabetic after a couple of years of treatment and following the dietary advice of the American Diabetes Association includes metformin, Januvia, and Actos, a triple-drug treatment that costs around $420 per month. Two forms of insulin (slow- and fast-acting), along with two or three oral medications, is not at all uncommon. “Collateral” revenues from the other health conditions that develop from a diet rich in “healthy whole grains,” such as drugs for hypertension, drugs to slow the progression of kidney disease in diabetes, drugs for “high cholesterol,” and drugs for high triglycerides, and you have a pharmaceutical drug bonanza. You, too, would throw all-expenses-paid, fly-the-entire-sales-force-to-the-Caribbean sales meetings. The global diabetes market has already topped $25 billion and is growing at double-digit rates. Forget the Internet, gold stocks, or solar energy—-diabetes is where the money is. This fact has not been lost on the very market-savvy pharmaceutical industry. As with any successful business, they have devoted substantial resources to develop and grow this booming business.
270 lb man in diapers 5. March 2011 William Davis (20) Alex is a big guy: 6 ft 4 inches, 273 lbs. On 10,000 units per day of vitamin D in gelcap form, his 25-hydroxy vitamin D level was 38.4 ng/ml. One year earlier, his 25-hydroxy vitamin D level, prior to any vitamin D supplementation was 9.8 ng/ml. According to the latest assessment offered by the Institute of Medicine (IOM):Vitamin D need for a 13-month old infant: 600 units per dayVitamin D need for a 6 ft 4 in, 273 lb male: 600 units per dayI paint this picture to highlight some of the absurdity built into the smug assumptions of the IOM's report. It would be like trying to fit a large, full-grown man into the diapers of a 13-month old. Few nutrients or hormones (in fact, I can't think of a single one) are required in similar quantity by an infant or toddler and a full grown adult. However, according to the IOM's logic, their vitamin D needs are identical, regardless of age, body size, skin color, genetics, etc. One size fits all.Just as the original RDA assessment by the Institute of Medicine kept thinking about vitamin D somewhere in the Stone Age, so does this most recent assessment.
90% small LDL: Good news, bad news 4. March 2011 William Davis (11) Chris has 90% small LDL particles. On his (NMR) lipoprotein panel, of the total 2432 nmol/L LDL particles ("LDL particle number"), 2157 nmol/L are small, approximately 90% (2157/2432).Bad news: Having this severe excess of small LDL particles virtually guarantees heart attack and stroke in Chris' future.Good news: It means that Chris potentially has spectacular control over his lipoprotein and lipid values, achieving statin-like values without statin drugs.Typically, extravagant quantities of small LDL particles are accompanied by low HDL, high triglycerides, and pre-diabetes or diabetes. Chris' HDL is 26 mg/dl, triglycerides 204 mg/dl; HbA1c 5.9% (a reflection of prior 60-90 days average blood glucose; desirable 4.8% or less), fitting neatly into the expected pattern.Chris' pattern tells me several things:1) He overconsumes carbohydrates, since carbohydrates trigger this pattern.2) He likely has a genetic susceptibility to this effect (e.g., a variant of the gene for cholesteryl ester transfer protein, perhaps hepatic lipase). Only the most gluttonous and overweight carbohydrate consumers can generate this high a percentage small LDL without an underlying genetic susceptibility. 3) Provided he follows the diet advised, i.e., elimination of all wheat, cornstarch, oats, and sugars, he is likely to have an extavagant drop in LDL particle number. Should he achieve the goal I set of small LDL of 300 nmol/L or less, his LDL particle number will likely be around 500 nmol/L. This translates to an LDL cholesterol of 50 mg/dl . . . 50 mg/dl. In many people, this notion of taking statin drugs for "high cholesterol" is an absurd oversimplification. But it is a situation that, for many, is wonderfully controllable with the right diet.
The American Heart Association has a PR problem 2. March 2011 William Davis (17) The results of the latest Heart Scan Blog poll are in. The poll was prompted by yet another observation that the American Heart Association diet is a destructive diet that, in this case, made a monkey fat. Because I am skeptical of "official" organizations that purport to provide health advice, particularly nutritional advice, I thought this poll might provide some interesting feedback. I asked:The American Heart Association is an organization that:The responses:Tries to maintain the procedural and medication status quo to benefit the medical system and pharmaceutical industry for money240 (64%)Doesn't know its ass from a hole in the ground121 (32%)Is generally helpful but is misguided in some of its advice79 (21%)Accomplishes tremendous good and you people are nuts6 (1%)Worrisome. Now, perhaps the people reading this blog are a skeptical bunch. Or perhaps they are better informed. Nonetheless, one thing is clear: The American Heart Association (and possibly other organizations like the American Diabetes Association and USDA) have a serious PR problem. They are facing an increasingly critical and skeptical public. Just telling people to "cut the fat and cholesterol" is beginning to fall on deaf ears. After all, the advice to cut fat, cut saturated fat, cut cholesterol and increase consumption of "healthy whole grains" in 1985 began the upward ascent of body weight and diabetes in the American public.Believe it or not, my vote would be for something between choices 1 and 3. I believe that the American Heart Association achieves a lot of good. But I also believe that there are forces within organizations that are there to serve their own agendas. In this case, I believe there is a substantial push to maintain the procedural and medication status quo, the "treatments" that generate the most generous revenues. I believe that I will forward these poll results to the marketing people at the American Heart Association. That'll be interesting!
The formula for aortic valve disease? 28. February 2011 William Davis (60) I've discussed this question before:Can aortic valve stenosis be stopped or reversed using a regimen of nutritional supplements?I had a striking experience this past week. Don has coronary plaque and began the Track Your Plaque program. However, discovery of a murmur led to an echocardiogram that measured his effective aortic valve area at 1.5 cm2. (Normal is between 2.5-3.0 cm2.) Because of his aortic valve issue, I suggested that, in addition to the 10,000 units of vitamin D required to increase his 25-hydroxy vitamin D level to 70 ng/ml, he also add vitamin K2, 1000 mcg per day, along with elimination of all calcium supplements. (I asked Don to use a K2 supplement that contained both forms, short-acting MK-4 and long-acting MK-7.) One year later, another echocardiogram: aortic valve area 2.6 cm2--an incredible increase. This is not supposed to happen. By conventional thinking, aortic valve stenosis can only get worse, never get better. But I've now witnessed this in approximately 10% of the people with aortic valve stenosis. The majority just stop getting worse, an occasional person gets worse, while a few, like Don, get better. Aortic valve stenosis is to the aortic valve as degenerative arthritis is to your knees: A form of wear-and-tear that leads to progressive dysfunction. When the aortic valve becomes stiff enough (i.e., "stenotic"), then it leads to chest pains, lightheadedness or losing consciousness, heart failure, and, eventually, death. Bad problem. Aortic stenosis typically starts in your 50s with calcification of the valve, getting worse and worse until the calcium makes the valve "leaflets" unable to move. The treatment: a new valve, a major undertaking involving an open heart procedure. What if taking vitamins D and K2 and avoiding calcium do not just reverse or stop aortic valve stenosis once established, but prevents it in the first place? Tantalizing possibility.Pressures on my time being what they are, I've not had the freedom to put together a prospective study to further examine this fascinating question. But it is definitely worth pursuing.
Blood glucose 160 26. February 2011 William Davis (28) What happens when blood glucose hits 160 mg/dl? A blood glucose at this level is typical after, say, a bowl of slow-cooked oatmeal with no added sugar, a small serving of Cheerios, or even an apple in the ultra carb-sensitive. Normal blood sugar with an empty stomach, i.e., fasting; high blood sugars after eating. Conventional wisdom is that a blood sugar of 160 mg/dl is okay, since your friendly primary care doctor says that any postprandial glucose of 200 mg/dl or less is fine because you don't "need" medication. But what sort of phenomena occur when blood sugars are in this range? Here's a list:--Glycation (i.e., glucose modification of proteins) of various tissues, including the lens of your eyes (cataracts), kidney tissue leading to kidney disease, skin leading to wrinkles, cartilage leading to stiffness, degeneration, and arthritis. --Glycation of LDL particles. Glycated LDL particles are more prone to oxidation. --VLDL and triglyceride production by the liver, i.e., de novo lipogenesis.--Small LDL particle formation--The increased VLDL/triglyceride production leads to the CETP-mediated reaction that creates small LDL particles which are, in turn, more glycation- and oxidation-prone. --Glucotoxicity--i.e., a direct toxic effect of high blood glucose. This is especially an issue for the vulnerable beta cells of the pancreas that produce insulin. Repeated glucotoxic poundings by high glucose levels lead to fewer functional beta cells. A blood glucose of 160 mg/dl is definitely not okay. While it is not an immediate threat to your health, repeated exposures will lead you down the same path that diabetics tread with all of its health problems.
Indian buffet 24. February 2011 William Davis (56) I took my family to a local all-you-can-eat Indian buffet. It was delicious. I confined my food choices mostly to vegetables and soups. Within about 30 minutes, I started to get that odd buzz in my head that usually signals a high blood sugar. When I got home, my fingerstick blood glucose: 173 mg/dl. Darn it! Must have been cornstarch or other sugars in the sauces. I got on my supine stationary bike and pedaled for 40 minutes at a moderate pace while I played Modern Warfare on XBox. (A great way, by the way, to fit in some low- to moderate-intensity exercise while occupying your brain. My wife often has to yell at me to get off, it's so much fun.) Blood glucose at the conclusion of exercise: 93 mg/dl-- a nice 80 mg/dl drop. This is a useful strategy to use in a pinch when you've either been inadvertently exposed to more carbohydrate than you can tolerate, or Toggle navigation Home Blog Home Archive Join Now Log in Put lipstick on a dwarf 2. December 2010 William Davis (24) Today, virtually all wheat products are produced from the Triticum aestivum dwarf mutant. You might call it "multi-grain bread,""oat bread," or "flaxseed bread." You could call it "organic," "pesticide-free," "non-GMO," or "no preservatives." It might be shaped into a ciabatta, bruschetta, focaccia, or panini. It might be sourdough, unleavened, or sprouted. It could be brown, black, Pumpernickel, or white. It could be shaped into a roll, bun, bagel, pizza, loaf, pretzel, cracker, pancake, brioche, baguette, or pita. It could be matzah, challah, naan, or Communion wafers. No matter what you call it, it's all the same. It's all from the dwarf mutant Triticum aestivum plant, the 18-inch tall product of hybridizations, backcrossings, and introgressions that emerged from genetics research during the 1960s and 70s. According to Dr. Allan Fritz, Professor of Wheat Breeding at Kansas State University, and Dr. Gary Vocke at the USDA, over 99% of all wheat grown today is the dwarf variant of Triticum aestivum. (For you genetics types, Triticum aestivum is the hexaploid, i.e., 3 combined genomes, product of extensive hybridizations, while ancestral einkorn is a diploid, i.e., a single genome, grass. Hexaploid Triticum aestivum contains the especially hazardous "D" genome, the set of genes most commonly the recipient of genetic manipulations to modify the characteristics of flour, such as gluten content. Einkorn contains only the original "A" genome.) No matter what you call it, add to it, how you shape it, etc., it's all the same. It's all the dwarf mutant product of tens of thousands of hybridizations. You can put lipstick on a pig, but it's still a pig. By the way, lipstick may contain wheat. What the Institute of Medicine SHOULD have said 1. December 2010 William Davis (47) Recent Posts For the sake of convenience: Commercial sources of prebiotic fibersHow Not To Have An Autoimmune ConditionFive Powerful Ways to Reduce Blood SugarCureality App Review: Breathe SyncAmber’s Top 35 Health and Fitness TipsTo Change, You Need to Get UncomfortableThe 3 Best Grain Free Food Swaps to Boost Fat BurningNot so fast. Don’t make this mistake when going gluten free!3 Foods to Add to Your Next Grocery List3 Band Exercises for Great Glutes From our Marketplace Tag cloud autoimmunity beauty cooking cosmetics Cureality dairy-free diabetes Exercise Fats grain Health Care inflammation italian kettlebell kids muscle nutrition pasta prebiotic probiotic recipie Revolution run running skin spring Stomach Issues strength training Thyroid time Tough Mudder Toxins Training Travel vegetables Weight Loss Wheat-free workout
Put lipstick on a dwarf 2. December 2010 William Davis (24) Today, virtually all wheat products are produced from the Triticum aestivum dwarf mutant. You might call it "multi-grain bread,""oat bread," or "flaxseed bread." You could call it "organic," "pesticide-free," "non-GMO," or "no preservatives." It might be shaped into a ciabatta, bruschetta, focaccia, or panini. It might be sourdough, unleavened, or sprouted. It could be brown, black, Pumpernickel, or white. It could be shaped into a roll, bun, bagel, pizza, loaf, pretzel, cracker, pancake, brioche, baguette, or pita. It could be matzah, challah, naan, or Communion wafers. No matter what you call it, it's all the same. It's all from the dwarf mutant Triticum aestivum plant, the 18-inch tall product of hybridizations, backcrossings, and introgressions that emerged from genetics research during the 1960s and 70s. According to Dr. Allan Fritz, Professor of Wheat Breeding at Kansas State University, and Dr. Gary Vocke at the USDA, over 99% of all wheat grown today is the dwarf variant of Triticum aestivum. (For you genetics types, Triticum aestivum is the hexaploid, i.e., 3 combined genomes, product of extensive hybridizations, while ancestral einkorn is a diploid, i.e., a single genome, grass. Hexaploid Triticum aestivum contains the especially hazardous "D" genome, the set of genes most commonly the recipient of genetic manipulations to modify the characteristics of flour, such as gluten content. Einkorn contains only the original "A" genome.) No matter what you call it, add to it, how you shape it, etc., it's all the same. It's all the dwarf mutant product of tens of thousands of hybridizations. You can put lipstick on a pig, but it's still a pig. By the way, lipstick may contain wheat.
What the Institute of Medicine SHOULD have said 1. December 2010 William Davis (47) Recent Posts For the sake of convenience: Commercial sources of prebiotic fibersHow Not To Have An Autoimmune ConditionFive Powerful Ways to Reduce Blood SugarCureality App Review: Breathe SyncAmber’s Top 35 Health and Fitness TipsTo Change, You Need to Get UncomfortableThe 3 Best Grain Free Food Swaps to Boost Fat BurningNot so fast. Don’t make this mistake when going gluten free!3 Foods to Add to Your Next Grocery List3 Band Exercises for Great Glutes
Why does wheat cause arthritis? 13. November 2010 William Davis (48) Wheat causes arthritis. Before you say "What the hell is he saying now?", let me connect the dots on how this ubiquitous dietary ingredient accelerates the path to arthritis in its many forms. 1) Wheat causes glycation--Glycation is glucose-modification of proteins in the body that occurs when blood glucose exceeds 100 mg/dl. Cartilage cells are especially susceptible to glycation. The cartilage cells you had at age 18 are the very same cartilage cells you have at age 60, since they lack the ability to reproduce and repair themselves. Proteins in cartilage are highly susceptible to glycation, which makes them stiff and brittle. Stiff, brittle cartilage loses its soft, elastic, lubricating function. Damaged cartilage cells don't regenerate nor produce more protective proteins. This allows destruction of cartilage tissue, inflammation, and, eventually, bone-on-bone arthritis. Because wheat, even whole wheat, sends blood sugar higher than almost all other foods, from table sugar to Snickers bars, glycation occurs after each and every slice of toast, every whole wheat bagel, every pita wrap. 2) Wheat is acidifying--Humans are meant to consume a diet that is net alkaline. While hunter-gatherers who consume meat along with plentiful vegetables and fruits live a net alkaline diet (urine pH 7 to 9), modern humans who consume insufficient vegetables and too much grain (of which more than 90% is usually wheat) shift the body towards net acid (urine pH 5 to 7). Wheat is The Great Disrupter, upsetting the normal pH balance that causes loss of calcium from bones, resulting in decalcification, weakness, arthritis and osteoporotic fractures.3) Wheat causes visceral fat--The extravagant glucose-insulin surges triggered by wheat leads to accumulation of visceral fat: wheat belly. Visceral fat not only releases inflammatory mediators like tumor necrosis factor and various interleukins, but is also itself inflamed. The inflammatory hotbed of the wheat belly leads to inflammation of joint tissues. This is why overweight and obese wheat-consuming people have more arthritis than would be explained by the burden of excess weight: inflammation makes it worse. Conversely, weight loss leads to greater relief from arthritis pain and inflammation than would be explained by just lightening the physical load. We need a name for this wheat effect. How about "bagel bones"?
Why do morphine-blocking drugs make you lose weight? 10. November 2010 William Davis (24) Naloxone (IV) and naltrexone (oral) are drugs that block the action of morphine. If you were an inner city heroine addict and got knifed during a drug deal, you'd be dragged into the local emergency room. You're high, irrational, and combative. The ER staff restrain you, inject you with naloxone and you are instantly not high. Or, if you overdosed on morphine and stopped breathing, an injection of naloxone would reverse the effect immediately, making you sit bolt upright and wondering what the heck was going on. So what do morphine-blocking drugs have to do with weight loss? An odd series of clinical studies conducted over the past 40 years has demonstrated that foods can have opiate-like properties. Opiate blockers, like naloxone, can thereby block appetite. One such study demonstrated 28% reduction in caloric intake after naloxone administration. But opiate blocking drugs don't block desire for all foods, just some.What food is known to be broken down into opiate-like polypeptides? Wheat. On digestion in the gastrointestinal tract, wheat gluten is broken down into a collection of polypeptides that are released into the bloodstream. These gluten-derived polypeptides are able to cross the blood-brain barrier and enter the brain. Their binding to brain cells can be blocked by naloxone or naltrexone administration. These polypeptides have been named exorphins, since they exert morphine-like activity on the brain. While you may not be "high," many people experience a subtle reward, a low-grade pleasure or euphoria.For the same reasons, 30% of people who stop consuming wheat experience withdrawal, i.e., sadness, mental fog, and fatigue. Wouldn't you know that the pharmaceutical industry would eventually catch on? Drug company startup, Orexigen, will be making FDA application for its drug, Contrave, a combination of naltrexone and the antidepressant, buproprion. It is billed as a blocker of the "mesolimbic reward system" that enhances weight loss. Step back a moment and think about this: We are urged by the USDA and other "official" sources of nutritional advice to eat more "healthy whole grains." Such advice creates a nation of obese Americans, many the unwitting victims of the new generation of exorphin-generating, high-yield dwarf mutant wheat. A desperate, obese public now turns to the drug industry to provide drugs that can turn off the addictive behavior of the USDA-endorsed food. There is no question that wheat has addictive properties. You will soon be able to take a drug to block its effects. That way, the food industry profits, the drug industry profits, and you pay for it all.
Heart scan tomfoolery 2 9. November 2010 William Davis (2) In the last Heart Scan Blog post, I discussed the significance of the apparent discrepancy between Steve's heart scan score and volume score. This post addresses his second question, also a FAQ about heart scan scores. Steve noted that his second scan compared to his first showed:- Left Main volume went up from 22.4 to 35.6- LAD went down from 95.2 to 91.3- LCX volume went down from 23.2 to 0- RCA volume went up from 0 to 9.3So there are apparent divergences in behavior in the left main that increased and both LAD (left anterior descending) and LCX (left circumflex) that decreased. The explanation is simple: When heart scans are "scored," they are viewed in horizontal "slices." When the heart is viewed as horizontal slices, the LAD and LCX originate from the common left main stem. In other words, it's like a tree with the left mainsteam representing the trunk, the LAD and LCX representing two main branches. Plaque can form, obviously, in all three arteries, but it can do so by starting in the left main, for instance, and extending into either the LAD or LCX, or both. The left main plaque can therefore bridge any 2 or all 3 arteries. When the plaque is "scored" by taking the computer mouse and circling the calcified plaque in question (to allow the computer program to generate the calcium score and volume score of that particular plaque), the plaque that may extend from left main into the LAD and/or LCX might be labeled "left main," or it might be labeled "LAD" or "LCX." There is no reliable way to "dissect" apart the plaque into the three arteries, since the plaque is coalescent and continuous. So the scoring technologist or physician simply arbitrarily declares the artery "LAD," for instance. The problem comes when two different interpretation methods are used: Perhaps it's a new technologist or physician, or there was no attention paid to how the previous scan was read. One reader calls it "left main" and the next calls it "LCX." So the apparent discrepancy has to do with flaws in the methods of segregating plaque location, as well as inattention to scoring techniques. The total score, however, remains unaffected. Nonetheless, Steve has enjoyed a modest reduction in the score of the left main/LAD/LCX from his original 140.8 down to a second left main/LAD/LCX score of 126.9. The right coronary artery (RCA), however, is not subject to this difficulty and Steve score shows a modest increase in score. (Why the divergent behavior between left main/LAD/LCX and RCA? There is no clear explanation for this, unfortunately.) All in all, the news for Steve is good: He achieved these results on his own using nutritional techniques. Because he, in all practicality, stopped the progression of his heart scan score and avoided the "natural" rate of increase of 30% per year, all he needs to do is "tweak" his program a bit to achieve reversal, i.e., reduction of score. Here's an image from another previous Heart Scan Blog post (about the relationship of osteoporosis and coronary disease) that shows such a plaque that starts in the left mainstem yet extends into both the LAD and LCX:
Heart scan tomfoolery 4. November 2010 William Davis (12) Heart Scan Blog reader, Steve, sent these interesting questions about his heart scan experience. (I sometimes forget that this blog is called "The Heart Scan Blog" and was originally--several years ago--meant to discuss heart scans. It has evolved to become a much broader conversation.) The answers are a bit lengthy, so I'll tackle Steve's questions in two parts, the second in another blog post. Dr. Davis,I had a heart scan last year. The score was 96. While not a horrible score, it was a wake up call, and I changed my lifestyle.I had another scan this year and the heart scan score went up to 105, but the volume score went down from 141 to 136.The report I received said this:'The calcium volume score is less in the current study as compared with the original or reference study. This is an excellent coronary result and indicates that there has been a net decrease in coronary plaque burden. The current prevention program is very effective and should be continued.'This is all well and good, but I have two questions:1. Am I really going in the right direction even though the heart scan score went up 9%?2. Here are results that make no sense to me:- Left Main volume went up from 22.4 to 35.6- LAD went down from 95.2 to 91.3- LCX volume went down from 23.2 to 0- RCA volume went up from 0 to 9.3Why would there be so much variation from year to year, and why would the plaque move from site to site?SteveQuestions like Steve's come up with some frequency, so I thought it would be worthwhile to discuss in a blog post. First of all, the conventional heart scan score, or "calcium score" or "Agatston score" (after Dr. Arthur Agatston, developer of the simple algorithm for calcium scoring, as well as South Beach Diet fame), is the product of the area of the plaque in a single CT "slice" image multiplied by a density coefficient, i.e., a number ranging from 1 to 4 that grades the x-ray density of the plaque. (1 is least dense; 4 is most dense.) A density coefficient of 1 therefore signifies some calcium within plaque, with higher density coefficients signifying increasing calcium content and density. Incidentally, "soft" plaque, i.e., non-calcified, would fall in the less than 1 range, even the negative range (fatty tissue within plaque). The volume, or "volumetric," score is the brainchild of Drs. Paulo Raggi and Traci Callister, who expressed concern that, if we cause plaque to shrink in volume, the density coefficient used to calculate the calcium score would increase (since they believed that calcium could not be reduced, contrary to our Track Your Plaque experience, thereby leading to misleading results. They therefore developed an algorithm that did not rely on density coefficients, but used the same two-dimensional area obtained in the standard heart scan score, but replaced the density coefficient with a (mathematically interpolated) vertical axis (z-axis) measure of plaque "height." This 3-dimensional volumetric value therefore provided a method to generate a measure of calcium volume. In their original publication, the volume score proved more reproducible than the standard calcium score. This way, any reduction in plaque volume would not be influenced by the misleading effects of calcium density, but reflect a real reduction in volume. Callister and Raggi's study also highlighted that calcium scoring in any form is subject to variability. Back in 1998 (when their study was published), there was a bit more variation than today due to the image acquisition methods used. But, even today, there is about 9% variation in scoring even if performed repeatedly (with less percentage variation the higher the score). Unfortunately, volume scoring never caught on and the calcium score has been the most commonly used value by most heart scan centers and in most clinical studies. And, in all practicality, the two values nearly always track together: When calcium score increases, volume score increases in tandem; when calcium score decreases, volume score decreases in tandem. Steve is therefore an exception to the general observation that calcium score and volume score travel together. Steve's calcium score increased, while his volume score decreased. From the above discussion, you can surmise a few things about Steve's experience:"1) In all likelihood, the changes in both calcium score and volume score could simply be due to variability, i.e., variation in the placement of his body on the scan table, variation in position of the heart, variation in data acquisition, etc. There is a high likelihood that neither value changed; both are essentially unchanged.2) If the changes are not due to scan variability, but are real, then it could be that the calcified plaque is reduced in volume but increased in density. If true, this is probably still a favorable phenomenon, since plaque volume is a powerful predictor of coronary "events" and an increase in plaque density is likely a benign phenomenon. It would also raise questions about the adequacy of vitamin D and vitamin K2 status, both major control factors over calcium deposition and metabolism. So, in all likelihood, Steve's apparent discrepant results are modest good news, especially since calcium scores can ordinarily be expected to increase at the rate of 30% per year if no action is taken. Experiencing no change in score, calcium or volumetric, carries a very excellent prognosis, with risk for heart attack approaching zero. (I'm impressed that Steve accomplished this on his own, something the majority of my colleagues haven't the least bit of interest doing.)Part 2 of Steve's question will be tackled in a separate post.