Track Your Plaque makes Consumer Reports!

. . . but not in a good way.

The September, 2011 issue of Consumer Reports showcases their Protect Your Heart discussion. Third paragraph: "The website Track Your Plaque warns, 'The old tests for heart disease were wrong--dead wrong.' It says heart scans are 'the most important health test you can get.'"

They go on to expose the overuse of heart procedures like angioplasty and stent implantation and offer their advice on how to manage heart disease risk: lower BP, reduce LDL cholesterol, lose weight, stop smoking, take aspirin. They quote Dr. Paul Ridker who declares heart scans are not useful because the "deposits cardiologists worry about are the less stable plaques that CT scans routinely miss."

I thought I'd been transported back to 1995. Not only is it clear that the Consumer Report writers never looked beyond the homepage of Track Your Plaque, but somehow saw our heart disease prevention and reversal program as promoting heart procedures. Incredible.

Of course, the Track Your Plaque program does the exact opposite: Advocates an approach that virtually eliminates the need for procedures and returns control over heart disease to the participant. That's a critical difference.

And, as I've had to remind my colleagues time and time again, what we are really after is an index of total coronary atherosclerotic plaque. Even in 2011, that index remains the simple coronary calcium score, a gauge of total plaque, not just of "hard," stable plaque. Perhaps in 10 years we will be using a better tool to gauge progression and regression of all the components of coronary atherosclerotic plaque, but today it remains the simple, accessible, mammogram-like coronary calcium score.

Consumer Reports does for the idea of heart disease prevention what food manufacturers do for health and weight loss: Echo conventional wisdom of the sort that generally makes us fatter, more diabetic, leads us to more heart procedures and needless deaths. I might use Consumer Reports to rate MP-3 devices or toasters, but I certainly would not rely on them for insightful health advice.

Paging Dr. Basedow

A 23-year old man came to my office having experienced weeks of extreme anxiety, palpitations, and 19 pounds of weight loss triggered by an overactive thyroid.

It all happened because of a large dose of iodine received during a CT scan using iodine-containing x-ray dye. (X-ray dyes are made visible on x-ray due to the iodine content.) This is a reaction first described in the 19th century by German physician, Karl Adolph von Basedow. (Jod is German for iodine.)[caption id="attachment_4313" align="alignleft" width="217" caption="Dr. von Basedow. Image courtesy Wikipedia"][/caption]

Now, here's the kicker: Jod-Basedow only occurs when there is pre-existing iodine deficiency. Indeed, this young man had an enlarged thyroid, signaling longstanding iodine deficiency (a goiter).

This example is among the more flagrant examples of something I have been witnessing: the return of iodine deficiency. As Americans cut back on their intake of iodized salt and fail to obtain iodine in sufficient quantities from seafood, seaweed, or supplementation, goiters and iodine deficiency are making a return in all its glory, reminiscent of the early 20th century, pre-iodized salt.

This young man's frightening experience is yet another way iodine deficiency can show itself, by the overenthusiastic thyroid response to a large dose of iodine when iodine deficiency has been present for a prolonged period.

Iodine deficiency and goiters have been lost to memory for most people. Even the FDA, in its advice for Americans to reduce salt and sodium intake, have forgotten to remind everyone to obtain iodine from an alternative source. "Those who cannot remember the past are condemned to repeat it."

Get your iodine.

Carb counting

In the recent Heart Scan Blog post, Can I eat quinoa, I discussed how non-wheat carbohydrate sources like quinoa, amaranth, black beans, brown rice, fruit, etc. do not exert the inflammation-provoking, appetite-increasing effects of wheat (since gliadin and gluten are not present), nor do they increase blood glucose as enthusiastically as the amylopectin A of wheat--but non-wheat grains can still increase blood sugar quite substantially.

Of course, any food that triggers blood sugar also trigger hepatic de novo lipogenesis, thereby increasing triglyceride levels and postprandial particles (e.g., chylomicron remnants), which, in turn, triggers formation of small LDL particles.

So these non-wheat carbohydrates, or what I call "intermediate carbohydrates" (for lack of a better term; low-glycemic index is falsely reassuring) still trigger all the carbohydrate phenomena of table sugar. Is it possible to obtain the fiber, B-vitamin, flavonoid benefits of these intermediate carbohydrates without triggering the undesirable carbohydrate consequences?

Yes, by using small portions. Small portions are tolerated by most people without triggering all these phenomena. Problem: Individual sensitivity varies widely. One person's perfectly safe portion size is another person's deadly dose. For instance, I've witnessed many extreme differences, such as 1-hour blood sugar after 6 oz unsweetened yogurt of 250 mg/dl in one person, 105 mg/dl in another. So checking 1-hour blood sugars is a confident means of assessing individual sensitivity to carbs.

Some people don't like the idea of checking blood sugars, however. Or, there might be times when it's inconvenient or unavailable. A useful alternative: Count carbohydrate grams. (Count "net" carbohydrate grams, of course, i.e., carbohydrates minus indigestible fiber grams to yield "net" carbs.) Most people can tolerate around 40-50 grams carbohydrates per day and deal with them effectively, provided they are spaced out throughout the day and not all at once. Only the most sensitive, e.g., diabetics, apo E2 people, those with familial hypertriglyceridemia, are intolerant to even this amount and do better with less than 30 grams per day. Then there are the genetically gifted from a carbohydrate perspective, people who can tolerate 50-60 grams, occasionally somewhat more.

People will sometimes say things like "You don't know what the hell you're talking about because I eat 200 grams carbohydrate per day and I'm normal weight and have perfect blood sugar and lipids." As in many things, the crude measures made are falsely reassuring. Glycation, for instance, from postprandial blood sugars of "only" 140 mg/dl--typical after, say, unsweetened oatmeal--still works its unhealthy magic and will lead long-term to cataracts, arthritis, and other conditions.

Humans were not meant to consume an endless supply of readily-digestible carbohydrates. Counting carbohydrates is another way to "tighten up" a carbohydrate restriction.

One hour blood sugar: Key to carbohydrate control and reversing diabetes

Diabetics are instructed to monitor blood glucose first thing in the morning and two hours after eating. This helps determine whether blood sugar is controlled with medications like metformin, Januvia, Byetta injections, or insulin.

But that's not how you use blood sugar to use to prevent or reverse diabetes. Two-hour blood sugars are also of no help in deciding whether you have halted glycation, or glucose modification of proteins the process that leads to cataracts, brittle cartilage and arthritis, oxidation of small LDL particles, atherosclerosis, kidney disease, etc.

So the key is to check one-hour after-eating (postprandial) blood sugars, a time when blood glucose peaks after consumption of carbohydrates. (It may peak somewhat sooner or later, depending on factors such as how much fluid was in the meal; protein, fat, and fiber content; presence of foods like vinegar that slow gastric emptying; the form of carbohydrate such as amylopectin A vs. amylopectin B, amylose, fructose, along with other factors. Once in a while, you might consider constructing your own postprandial glucose curve by doing fingersticks every 15 minutes to determine when your peak occurs.)

I reject the insane notion that after-eating blood sugars of less than 200 mg/dl are acceptable, the value accepted widely as the cutoff for health. Blood sugars this high occurring with any regularity ensure cataracts, arthritis, and all the other consequences of cumulative glycation. I therefore aim to keep one-hour after-eating glucoses 100 mg/dl or less. If you start in a pre-diabetic or diabetic range of, say, 120 mg/dl, then I advise people to not allow blood glucose to go any higher. A pre-meal blood glucose of 120 mg/dl would therefore be followed by an after-eating blood glucose of no higher than 120 mg/dl.

No doubt: This is strict. But people who do this:

--Lose weight from visceral fat
--Heighten insulin sensitivity
--Drop blood pressure
--Drop HbA1c and fasting glucose over time
--Reduce small LDL and other carbohydrate-sensitive measures

By the way, if you inadvertently trigger a high blood sugar like I did when I took my kids to the all-you-can-eat Indian buffet, go for a walk, bike, or burn the sugar off with a 30-minute or longer physical effort. Check your blood sugar again and it should be back in desirable range. But then learn from your lesson: Eliminate or reduce portion size of the culprit carbohydrate food.

Wheat Belly coming to bookstores!

Anyone following the conversations on these pages know that I have some very serious concerns about this thing being sold to us called "wheat"--cause it ain't wheat! It is the result of incredible genetics shenanigans inflicted on this plant, mostly in the name of increased yield per acre.



I now classify wheat as "Public Enemy #1," the prime nutritional culprit underlying obesity, heart disease, "cholesterol" abnormalities, hypertension, arthritis, psychiatric illness, and on and on. Once you read the full story, I believe that you will agree: Modern Triticum aestivum, the plant that now serves as the source for virtually all the wheat flour products now consumed--organic, whole grain, multigrain, sprouted . . . it makes no difference--does not belong in the human diet. So many people, searching for solutions for their fatigue, weight gain, leg edema, incurable rashes, joint pain, etc., will find their answers here.

Wheat Belly: Lose the wheat, lose the weight and find your path back to health will be on bookstore shelves including Barnes and Noble August 30, 2011 or is available for preorder here at Amazon. Wheat Belly will also be available as a downloadable Kindle book and as unabridged audio CDs.

You can also follow the Wheat Belly conversations on my Wheat Belly Blog. One of my recent posts discusses the herbicide-resistant semi-dwarf wheat strain, Clearfield, that is now making its way to more and more supermarket shelves.

You'll also find more conversation on the Wheat Belly Facebook pages.

The exception to low-carb

I witness spectacular results restricting carbohydrates, both in the office as well as in my online experiences, such as those in Track Your Plaque. Of course, the diet I advocate is not just low-carb; it starts with elimination of wheat (for a long list of reasons). So the diet is wheat-free in the setting of low-carbohydrate.

What does this accomplish? Here's a partial list:

--Weight loss-Specifically, loss of visceral fat, the kind hinted at on the surface as "love handles" or what I call "wheat belly."
--Reduced blood sugar and HbA1c (reflecting prior 60-90 days glucose)
--Marked reduction in small LDL and triglycerides, increased HDL
--Reduced inflammatory measures like c-reactive protein
--Reduced leptin and leptin resistance, increased adiponectin
--Reduced estrogen and prolactin in men, accompanied by shrinkage or loss of enlarged breasts ("man boobs"); reduced estrogen in females accompanied by reduced risk for breast cancer

Pretty impressive. But there's one group of people who can experience unexpected effects with this diet: The 25% of people with apoprotein E4.

Everybody has two genes for apo E; the most common type is apo E 3/3. Around 1 in 4 people have 1, less commonly 2, genes for apo E4.

I hate apo E4. I hate apo E4 because it means I've got to dust off the nonsense I used to tell patients about cutting their fat, cutting their saturated fat. But that's what apo E4 people have to do. But it doesn't end there.

Apo E4 people also typically have plenty of small LDL particles triggered by carbohydrates. Put fats and carbohydrates together and you get an explosion of small LDL particles. Remove fats, small LDL goes down a little bit, if at all. Remove carbohydrates, small LDL goes down but total LDL (mostly large) goes up. The large LDL in apo E4 does seem to be atherogenic (plaque-causing), though the data are fairly skimpy.

So apo E4 creates a nutritional rock and a hard place: To extract full advantage from diet, people with apo E4 have to 1) go wheat-free, low-carb, then 2) not overdo fats, especially saturated fat.

It still gives me the creeps to tell an apo E4 person that they've got to watch their fats, worse than watching Starsky and Hutch reruns.

Can I eat quinoa?

. . . or beans, or brown rice, or sweet potatoes? Or how about amaranth, sorghum, oats, and buckwheat? Surely corn on the cob is okay!

These are, of course, non-wheat carbohydrates. They lack several crucial undesirable ingredients found in our old friend, wheat, including no:

Gliadin--The protein that degrades to exorphins, the compound from wheat digestion that exerts mind effects and stimulates appetite to the tune of 400 additional calories (on average) per day.
Gluten--The family of proteins that trigger immune diseases and neurologic impairment.
Amylopectin A--The highly-digestible "complex" carbohydrate that is no better--worse, in fact--than table sugar.

So why not eat these non-wheat grains all you want? If they don't cause appetite stimulation, behavioral outbursts in children with ADHD, addictive consumption of foods, dementia (i.e., gluten encephalopathy), etc., why not just eat them willy nilly?

Because they still increase blood sugar. Conventional wisdom is that these foods trend towards having a lower glycemic index than, say, table sugar, meaning it raises blood glucose less.

That's true . . . but very misleading. Oats, for instance, with a glycemic index of 55 compared to table sugar's 59, still sends blood sugar through the roof. Likewise, quinoa with a glycemic index of 53, will send blood sugar to, say, 150 mg/dl compared to 158 mg/dl for table sugar--yeah, sure, it's better, but it still stinks. And that's in non-diabetics. It's worse in diabetics.

Of course, John Q. Internist will tell you that, provided your blood sugars after eating don't exceed 200 mg/dl, you'll be okay. What he's really saying is "There's no need for diabetes medication, so you're okay. You will still be exposed to the many adverse health consequences of high blood sugar similar to, though less quickly than, a full diabetic, but that's not my problem."

In reality, most people can get away with consuming some of these non-wheat grains . . . provided portion size is limited. Beyond limiting portion size, there are two ways to better manage your carbohydrate sensitivity to ensure that metabolic distortions, such as high blood sugar, glycation, and small LDL particles, are not triggered.

More on that in the future.


Lipoproteins . . . zero!

With the recent refinements in our approach to correction of the lipoprotein abnormalities that lead to coronary plaque and heart disease risk, I have been witnessing more and more people achieve:

Small LDL particles 0 nmol/L
Lipoprotein(a) 0 nmol/L



For instance, Ted, a 58-year old man I saw in the office today started with:

Small LDL 1673 nmol/L
Lipoprotein(a) 219 nmol/L


In other words, both small LDL particles and lipoprotein(a) are being knocked down to zero values.

Incidentally, the combination of lipoprotein(a) with small LDL is among the most atherogenic (atherosclerotic plaque-causing) patterns known. Despite his athletic, slender build and avoidance of unhealthy habits, Ted's heart scan score was 922--very high.

So Ted followed the diet I advocate, i.e., wheat elimination followed by elimination of cornstarch, oats, and sugars; high-dose fish oil (total daily EPA + DHA of 6000 mg/day); vitamin D supplementation sufficient to achieve a 25-hydroxy vitamin D level of 60-70 ng/ml; iodine supplementation; and thyroid normalization which, in Ted's case, required supplementation with the T3 thyroid hormone, liothyronine, at a small dose.

The result:

Small LDL particles 0 nmol/L
Lipoprotein(a) 0 nmol/L


Not everybody, of course, is achieving these incredible--and previously impossible--results. But the numbers are growing. Ted is the third person to achieve zeroes all around, in fact, over the past 10 days.

Heart disease prevention is getting better and more powerful every day. And it ain't all about Lipitor and low-fat.


Chocolate almond biscotti

Biscotti are twice-baked biscuits or cookies that are perfect for dipping into coffee, latté, or espresso. These wheat-free, low-carb biscotti are rich with the taste of chocolate and almonds.

Yield: approximately 15 biscotti



Ingredients:

2 cups almond meal
½ cup chopped walnuts
1/4 cup cocoa powder (undutched)
½ cup dark chocolate chips
Sweetener equivalent to ½ cup sugar (e.g., liquid stevia, Truvia)
½ cup ricotta cheese, room temperature (replace with coconut milk if lactose intolerant)
4 tablespoons butter, melted (replace with coconut oil if lactose intolerant)
2 large eggs
¼ cup milk, unsweetened almond milk, or soy milk
¼ cup almond, peanut, or sunflower seed butter, room temperature

Preheat oven to 350º F.

Mix almond meal, walnuts, sweetener, cocoa powder, and chocolate chips in bowl. Mix in ricotta, butter, eggs, milk, and nut butter and blend by hand thoroughly.

Pour mix onto baking pan lined with parchment paper or greased with coconut oil or other oil. Shape into loaf approximately 1 inch deep and 3½ to 4 inches in width. Place in oven and bake for 40 minutes.

Remove loaf and allow to cool 15 minutes. Slice into approximately ¾-inch widths and lay each biscotto on its side on baking pan. Put back in oven for 10 minutes.

Remove pan and flip biscotti over. Place back in oven and bake an additional 5 minutes. Remove and cool.

Optional: For a little dark chocolate "icing":
Melt 3-4 oz semisweet or dark chocolate in microwave (in 15 second increments until melted) or in metal bowl placed in heated water. Stir in 1-2 teaspoons butter.
Dip each biscotti into melted chocolate mix or drizzle chocolate mixture over top of each biscotto.

Sun green tea

Here's a great way to enjoy the health benefits of green tea during the summer: sun green tea.


I dropped two green tea bags into approximately one-half gallon of cold water in a clear glass jar. I placed the jar in the sun (with top on) for four hours, then brought it into the kitchen. I served it as iced tea with a slice of lemon and mint leaf.

The sun green tea was a smoother than standard green tea brewed with hot water. Ordinarily, if you brew hot green tea for more than 3-5 minutes, it becomes more bitter or tannic. This sun green tea, despite steeping for four hours, was not the least bit bitter or tannic.

The green tea lasted well for about 48 hours, more than enough to enjoy several glasses per day.

Do stents prevent reversal?

I've seen this phenomenon several times now: A highly-motivated Track Your Plaque participant with a stent in one artery will do all the right things--lose weight, achieve 60:60:60 in basic lipids, identify and correct hidden lipoprotein disorders, take fish oil, correct vitamin D, etc.

Follow-up heart scan shows dramatic reduction in scoring in the two arteries without stents--30% per artery. But the artery with the stent will show marked increase in scoring above and/or below the stent. (It's impossible to tell what happens in or around the stent itself from a calcium scoring standpoint, since steel looks just like calcium on a CT heart scan.) In other words, there is marked plaque growth in the vicinity of the stent, despite the fact that dramatic reversal of atherosclerosis has occurred in other arteries without stents.

Should we take this to mean that a stent destroys the opportunity for atherosclerotic plaque reversal in the stented artery? I don't know, but I fear this may be true. What dangers does this different sort of plaque pose? Is it the result of the injury imposed at time of stent implantation, some modification of flow or biologic responses as a result of the presence of the stent?

These are all unanswered questions. But I believe that it is yet another suggestive piece of evidence that the best stent is no stent at all.

At what score should I have a heart cath?

This question comes up frequently: At what specific heart scan score should a heart catheterization be performed? In other words, is there a specific cut-off that automatically triggers a need for catheterization?

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

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

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

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

In my view, no heart scan score should autmatically prompt a major heart procedure like heart catheterization in a person without symptoms.

Niacin makes NY Times

In the wake of the crash and burn of Pfizer's torcetrapib, media attention has turned up the miracles of . . .good old niacin. The NY Times carried a well-written report on niacin in its recent report, An Old Cholesterol Remedy Is New Again.


(Read the entire report at http://www.nytimes.com/2007/01/23/health/23consume.html?em&ex=1169701200&en=670fa84ae2ea648c&ei=5087%0A)

Among their comments:

...torcetrapib worked primarily by increasing HDL, or good cholesterol. Among other functions, HDL carries dangerous forms of cholesterol from artery walls to the liver for excretion. The process, called reverse cholesterol transport, is thought to be crucial to preventing clogged arteries.

Many scientists still believe that a statin combined with a drug that raises HDL would mark a significant advance in the treatment of heart disease. But for patients now at high risk of heart attack or stroke, the news is better than it sounds. An effective HDL booster already exists.

It is niacin, the ordinary B vitamin.

In its therapeutic form, nicotinic acid, niacin can increase HDL as much as 35 percent when taken in high doses, usually about 2,000 milligrams per day. It also lowers LDL, though not as sharply as statins do, and it has been shown to reduce serum levels of artery-clogging triglycerides as much as 50 percent. Its principal side effect is an irritating flush caused by the vitamin’s dilation of blood vessels.

Despite its effectiveness, niacin has been the ugly duckling of heart medications, an old remedy that few scientists cared to examine. But that seems likely to change.

“There’s a great unfilled need for something that raises HDL,” said Dr. Steven E. Nissen, a cardiologist at the Cleveland Clinic and president of the American College of Cardiology. “Right now, in the wake of the failure of torcetrapib, niacin is really it. Nothing else available is that effective.”

In 1975, long before statins, a landmark study of 8,341 men who had suffered heart attacks found that niacin was the only treatment among five tested that prevented second heart attacks. Compared with men on placebos, those on niacin had a 26 percent reduction in heart attacks and a 27 percent reduction in strokes. Fifteen years later, the mortality rate among the men on niacin was 11 percent lower than among those who had received placebos.

'Here you have a drug that was about as effective as the early statins, and it just never caught on,' said Dr. B. Greg Brown, professor of medicine at the University of Washington in Seattle. 'It’s a mystery to me. But if you’re a drug company, I guess you can’t make money on a vitamin.'



Of course, you and I don't have to wait for the media to endorse something. I'm nonetheless thrilled that this hugely helpful vitamin is gaining greater recognition. My preferred form nowadays is over-the-counter SloNiacin (Upsher Smith). Weve seen no liver side-effects and a minimal quantity of flushing. It's also reasonably priced, $13.99 for 100 tablets of 500 mg at Walgreen's. That's a lot cheaper than prescription Niaspan at $130 for 60 tablets.

Perhaps the notoriety will cut back on the silly responses from some physicians that I still hear about from patients: "My doctor said to stop the niacin because it's going to destroy my liver."

Wheat: the nicotine of food

Yes, we know that wheat contributes to creating small LDL, drops HDL, raises triglycerides, and VLDL. We also know it indirectly slows the clearance of after-eating fats from the blood (curious, I know). Wheat products also increase inflammation (C-reactive protein), raise blood sugar, and contribute tremendously to diabetes.

What many people don't know is that wheat products also have an addictive quality: have one donut and you want another. It's true for bread, breakfast cereals, pretzels, cookies, etc. How many times have you had just one Oreo cookie?

Curiously, elimination of wheat products, unlike elimination of nicotine, usually causes the cravings to disappear. In other words, if you stop smoking cigarettes, the desire to smoke doesn't go away. With wheat products, the often overwhelming desire for more wheat products often just goes away.

But most people are simply unable to dramatically reduce or eliminate wheat products from their daily diet and therefore struggle each and every day with excessive cravings for bagels, donuts, cookies, breads, etc.

Try this useful experiment: Eliminate wheat products for a month and see what happens. Most people drop blood pressure, lose the tummy excess, feel more alert, see a drop in blood sugar, experience improvements in lipoproteins, and regain control over appetite.

Good time for a heart attack?

Man Has Heart Attack At Right Place, Right Time

If Robert Ricard had picked the wrong restaurant for lunch, he might have died.

The 71-year-old Michigan man suffered a heart attack shortly after ordering a glass of wine with friends at Bentley's Roadhouse on Saturday.

Luckily, a disaster medical team was sitting nearby.



A TV station in Michigan reported the above story. You've heard these "if it wasn't for ___, so and so would have died" stories. They're reported in all cities at one time or another.

What amazes me about these common local stories is that they're accepted at all. The question that comes to my mind is "Why couldn't the heart attack have been averted in the first place?" Early identification then, as close as humanly possible, elimination of risk would have been a preferable path.

Of course, it may not be the role of the media to cast judgement on why and how the entire episode could have been completely prevented from occurring. But you shouldn't fall into the same trap of complacency. We cannot expect others to save us when the "big one" hits. Your best assurance is to never have one in the first place.

How good is the South Beach Diet?

I'm a fan of the South Beach Diet.

Though it is billed as a program for weight loss (for which it is very effective), it is really a program for health. The basic approach of South Beach involves:

Eat good fats — Choose good fats from olive oil, canola oil, peanut oil, flaxseed oil, walnut oil, avocados, nuts, and fish. Omega-3 (fish oil) supplements are also fine.


Eat good carbs — Good carbs include high-fiber, nutrient-dense fruits, vegetables, legumes, and whole grains.

Eat lean protein — Good sources include eggs, low-fat dairy, nuts, seeds, legumes, skinless white-meat poultry, fish, shellfish, lean cuts of meat, and vegetarian options such as tofu.

(From The South Beach Diet, Dr. Arthur Agatston)


There's no doubt that South Beach can yield dramatic weight loss. In my experience, the success in weight loss depends on 1) how unhealthy your diet was in the first place, and 2) how long you can stick to Phase I, the inital phase during which weight loss is most dramatic. Some people have to periodically cycle back to Phase I to break a "plateau" or to lose faster.

But South Beach is also healthy. It has all the ingredients of a healthy eating program: Low saturated and hydrogenated fats, rich in monounsaturated fats, high fiber, low- to moderate- glycemic index, vegetables and fruits, lean proteins.

The Atkins' diet, in contrast, while very effective for weiglht loss, is an unhealthy process. I've seen lots of bladder infections, constipation, skin rashes, and kidney stones. That's just in the short term. If you stick to the "induction phase" (the no carbohydrate, low fiber, indiscriminate fat initial phase) for an extended period, I suspect that other adverse internal phenemena also develop that might not show for years, like cancer. But--it does work for weight loss!

South Beach's Phase I is also carbohydrate restricted, but steers you towards healthier foods, such as healthy oils from olive and canola, raw or dry roasted nuts, and lean proteins and vegetables.

What really makes South Beach special, however, are its clever recipes. Dr. Arthur Agatston (the author) involved chefs from the restaurants in the South Beach area of Miami to help create healthy yet delicious recipes. We've tried many of them and, while they are different from traditional fare, are delicious and satisfying for the most part.

Criticisms? None, really. But, when my patients choose South Beach (which I often encourage), I often have to impress on them that the Track Your Plaque program is not about weight loss. It is about seizing control of a potentially life-threatening disease. It is a far more important goal with greater implications. Weight loss is just one aspect of a coronary plaque control effort. For this reason, we sometimes have to make changes in the South Beach program to allow for correction of specific lipoprotein patterns.

The most common modification is in people with small LDL particles. This pattern often does indeed respond to weight loss and/or niacin. However, it occasionally persists despite these efforts. We then will ask the patient to continue to restrict the re-introduction of wheat products, though it is allowed after Phase I in South Beach. In other words, for this specific and sometimes difficult to control lipoprotein pattern, a spedific modification of the off-the-shelf South Beach program is sometimes necessary. Of course, the diet is created to suit everybody. Lipoprotein analysis permits detailed insight into your patterns and it's only to be expected that specific modifications might be needed.

But, as written, you can do quite well in your plaque control program by sticking to South Beach.

Be patient with niacin

Mel's HDL started at 37 mg/dl one year ago. Mel had several other abnormal lipoprotein patterns along with his HDL (inc. small LDL and Lp(a)), but HDL was clearly a crucial factor in his panel.

With a heart scan score of 1166, we needed to raise Mel's HDL to the Track Your Plaque target of 60 mg/dl. So Mel started niacin, our number one method to raise HDL, in addition to reducing his exposure to wheat products and other high glycemic index foods; increasing his physical activity; trying to reduce his excess tummy fat; fish oil; dark chocolate (2 oz per day) and red wine (1-2 glasses per day, preferably dark French reds). The form of niacin we often choose is SloNiacin (Upsher Smith), available over-the-counter for about $12-14 per 100 tablets.

Mel started out with niacin 500 mg per day at dinner, increased to 1000 mg at dinner after four weeks. Although this is usually too soon to reassess HDL, Mel insisted. His HDL 41 mg/dl. Mel's disappointment was palpable. He was the usual type A personality: he wanted his HDL higher--now! So Mel insisted that we increase niacin to 1500 mg per day. (We never go higher than this if low HDL or small LDL is the indication for niacin; only when Lp(a) is present do we go higher.)

Six months into this process, HDL: 45 mg/dl. Still a sluggish response.

One year later, HDL: 68 mg/dl. Finally!

That is typical for niacin, as well as combination of lifestyle changes Mel made. None of them result in an immediate rise in HDL; all take months to 1-2 years to exert full HDL-raising effect.

Think of HDL as the 82-year old grandma who takes a long time to cross the street-she does get there!

Note: Doses of niacin >500 mg per day should be taken with medical supervision.

Can vitamin D be a SOLE risk factor?

Here's a crazy question. It occurred to me as I was talking to Drew, a slender, active 54-year old dentist with no bad habits including no smoking.

Drew's heart scan score was 222. His lipoprotein analysis mostly revealed a lot of nothing, which is unusual. The only pattern that showed up was a modestly high LDL of 122 mg/dl with a very slight excess of small LDL. That's it. I would not be satisfied that these were sufficient cause for Drew's level of coronary plaque.

Drew's 25-OH-vitamin D3 level: 15 ng/ml--severe deficiency--despite the fact that his doctor had suggested that he take a vitamin D2 preparation. In other words, Drew had been profoundly deficient, probably for years.

Given the unimpressive cholesterol and lipoprotein values, could vitamin D serve as a trigger for coronary plaque all by itself?

I don't have an answer and know of nobody else who does. However, my opinion is that vitamin D is indeed a potent risk that can cause heart disease as a sole risk factor.

Perhaps it's another piece of circumstantial evidence suggesting that vitamin D has an enormous influence on health, including coronary plaque. Interestingly, the only other health problem Drew has had is prostate cancer, treated a few years ago with prostate removal and radiation. Good evidence suggests that vitamin D deficiency escalates risk of prostate cancer substantially.

By the way, I've seen people taking vitamin D2 preparations, called "ergocalciferol," who are every bit as deficient as those who take no vitamin D at all. Avoid D2 or ergocalciferol preparations: they're worthless.

Does fish oil raise LDL cholesterol?

Katie had an LDL (conventionally calculated) of 87 mg/dl, HDL of 48 mg/dl.

She added fish oil, 6000 mg per day. Three months later her LDL was 118 mg/dl, HDL 54 mg/dl. In other words, LDL increased by 31 mg. What gives?

Several studies have, indeed, shown that fish oil raises LDL cholesterol, usually by 5-10 mg/dl. Occasionally, it may be as much as 20-30.

Unfortunately, many physicians often assume that it's the (minor) cholesterol content of fish oil capsules, or some vague, undesirable effect of fish oil. It's nothing of the kind.

Since we based Katie's program on (NMR) lipoprotein analysis, not conventional lipids (HDL, calculated LDL, triglycerides, total cholesterol), I knew that Katie also had a severe excess of intermediate-density lipoprotein, or IDL, and very-low density lipoproteins, VLDL. This signifies that after a meal, dietary fats persist for 12, 24,or more hours. Fish oil is a very effective method to clear IDL and VLDL, though sometimes it also causes a shift of some IDL and VLDL into the LDL class. Thus, the apparent increase in LDL.

Another contributor: Conventional LDL is a calculated value, not measured. The calculation for LDL is thrown off by any reduction in HDL or rise in triglycerides. In Katie's case, the rise in HDL from 48 to 54 means that calculated LDL is becoming more accurate and rising towards the true measured value. At the start, Katie's true measured LDL was 122 mg/dl, 35 mg higher than the calculated value. Calculated LDL is therefore approximating measured LDL more accurately as HDL rises.

The most important lesson to learn is that, if LDL rises significantly on fish oil and you haven't had lipoproteins formally measured, there may have been a substantial postprandial abnormality like IDL that was unrecognized.

Heart disease is everywhere

If you ever need convincing that heart disease is everywhere, you should do what I do: subscribe to Google Alerts and have them forward news anytime the search phrase "heart attack" crosses the web. (Just go to Google, click on "more" to the right of the search bar, and follow the links.)


Some recent samples:


Workmates resuscitate driver after heart attack

A woman coal mine truck driver had a heart attack and required resuscitation with a defibrillator 3 times on the way to the hospital.





Heart attack kills groom at reception
A 34-year old man died during his wedding reception, leaving behind his 26-year old new wife.






Heart attack ruled as cause of crash

An Alabama man drove his pick-up truck into oncoming traffic while suffering a heart attack.






Heart-attack victim to return to Hamburg stage


Country music artist, Michael Harding, suffered a heart attack and cardiac arrest during a performance. He is apparently recovered and returning to the stage.



That's just a sample from the last two days. While you and I are carry on a conversation on reversal of heart disease, our neighbors and friends drop over every day. Even though I witness successful heart disease reversal routinely, the rest of the world is not participating.

Pass it on: Coronary disease is identifiable, preventable, controllable, and reversible.
All posts by william-davis

Estrogens and CT heart scan scores

A recent study from the Women's Health Initiative (WHI), the large study that originally showed no reduction in heart attack with use of estrogens in postmenopausal females, has just published a new study.

In this new effort, women who took Premarin (horse estogens) had up to 61% lower CT heart scan scores. This new study was confined to the women from the original WHI study who had entered the study between the ages of 50-59 years (average 55 years old), since this was the significant subgroup of women who actually showed a reduction in heart attack risk, whereas other groups showed no benefit or a slightly increased risk.

For a full discussion of this fascinating result, see the Track Your Plaque report, Can estrogen reduce CT heart scan scores? at http://cureality.com/library/fl_06-017estrogen.asp. (This report is open to both Track Your Plaque Members and non-Members.)

I truly wish that the issues surrounding female hormone replacement were clearer. This new perspective adds just another interesting twist on a strategy that too many people, in my view, dismissed too readily with the initial WHI results.

To add to an already confusing situation, the WHI study was sponsored by Wyeth Pharmaceuticals, the maker of Premarin, and many of the investigators participating in the study obtained financial compensation from Wyeth. On the one hand, we have to give credit to the company and the investigators for publishing the initial study that panned the effects of Premarin. On the other hand, it makes any positive data somewhat suspect, particularly since there is a far less costly and probably superior preparation called human estrogens.

Incidentally, Wyeth is also behind the maddening FDA petition to prevent "compounding" pharmacies from dispensing human hormones like estrogen unless made by a drug manufacturer. They hide behind claims of concerns over safety. Nonsense. This is pure profiteering and protection of their enormously profitable franchise and has nothing to do with public safety. If there were genuine concerns that the compounding pharmacies, around for decades with an excellent reputation, pose safety issues, why not just lobby for improved oversite?

If only we had data like WHI that used human estrogens and human progesterone. I suspect that we'd see bigger, better effects with less of the ill effects peculiar to the cross-species use of Premarin and the synethetic progestin, Provera.

The wheat-free life

"There's nothing else I can do with my diet," declared Whitney, a 53-year old university faculty member.

"I don't eat meat. I never eat fried foods. I can't remember the last time I used butter. My idea of having a treat is a handful of blueberries. What else can I do?"

Whitney was clearly frustrated. With a CT heart scan score of 264, she was worried that trouble was just around the corner. Her lipoprotein panel had demonstrated a severe small LDL pattern, with 70% of all LDL particles in the small category. HDL was also low at 41 mg/dl.

"What did you eat for breakfast?" I asked.

"Same as always: Either Fiber One cereal or Shredded Wheat. No sugar, just skim milk. Sometimes I have some orange juice, fresh-squeezed of course."

"How about lunch?"

"If I brown-bag it, I'll usually have a reduced-fat turkey breast sandwich on whole grain bread. About once a week, I'll have a whole wheat bagel--no cream cheese, of course."

"Dinner?"

"Sometimes I have chicken--skinless--with a vegetable, corn, or salad. I love pasta, but I always use whole wheat."

"How about snacks?"

"I try not to snack. But, when I'm desperate, I usually grab some Triscuits or pretzels."

The problem with Whitney's diet was clear: Too many sugar-equivalents, otherwise known as wheat. I suggested that her diet was far too heavily laden with wheat products. She seemed skeptical. "But this is as low-fat as I can get! Now you're going to take away wheat?"



What happens when you eliminate wheat from your diet?

Several predictable, consistent changes can be observed:


--HDL cholesterol goes up.

--Triglycerides go down.

--Small LDL particles are reduced.

--LDL cholesterol drops (the amount dropped depends on the proportion of small LDL pattern)

--Blood sugar drops.

--Blood pressure drops.

--C-reactive protein (an index of imperceptible inflammation) drops.


In addition to these measurable changes, several perceptible improvements often develop: more energy, less afternoon "slump," better sleep, sometimes less rashes.

Since Whitney was skeptical, I suggested a simple 4 week "experiment": Eliminate wheat products entirely for 4 weeks and see for herself what happens. I also warned her that, while I believe that elimination of wheat is a great strategy, she could negate the benefits by indulging in candy, soft drinks, and other junk products. It would therefore be necessary to maintain an otherwise healthy diet.

So Whitney gave it a try for 4 weeks. To make up for the dropped calories, she increased her reliance on vegetables, fruits, lean proteins, nuts, seeds, and healthy oils.

After losing 6 lbs over the 4 weeks without otherwise trying, she was convinced. She was further convinced when we reassessed her laboratory work: HDL went up 10 mg/dl; triglycerides down 120 mg/dl; blood sugar dropped from 112 mg/dl (pre-diabetic) to 95 mg/dl (normal). Several months later, we checked her lipoproteins. Small LDL had dropped to around 30% of total LDL--a big improvement.

It's contrary to conventional wisdom. It's counter to the USDA Food Pyramid. It's certainly not what the American Heart Association says. It could potentially disrupt the economics and politics of the enormously powerful food industry.

But, more often than not, the results are impressive to phenomenal.

Death of a $7 billion industry

Vitamin D has taken its place as a crucial ingredient for coronary plaque control and control of CT heart scan scores.

Vitamin D replacement is also crucial for bone health, particularly the prevention of osteoporosis. But conversations about vitamin D replacement to true healthy levels is notably absent from the conversation on treatment and prevention of osteoporosis. Yes, you will find a small dose of vitamin D in calcium tablets and in multivitamins. Those of us who check blood levels of 25-OH-vitamin D3 in patients will tell you: They don't work. These are unabsorbable forms of vitamin D and at trivial doses. There was an attempt to give this issue a little cursory attention when a small dose of vitamin D was added to Fosamax (Fosamax D).

There are an estimated 50 million Americans with various degrees of osteoporosis. It's numbers like this that make the drug manufacturers salivate. Osteoporosis treatment is also chronic. This is among the holy grails of the drug industry: developing agents for widespread ailments that require long-term treatment that extends over years. That's a lot more profitable than 10 days of antibiotics that are over and done with in one treament course.

The osteoporosis market now stands at $7 billion per year and is expected to grow 6-7% per year, according to industry analysts. Drugs like Fosamax, Evista, and Actonel will eventually be replaced by Boniva, Eclasta, and bazedoxifene, and later by AMG-172 and balicatib. Monthly costs for these drugs can be $70 or more per month, sometimes several hundred dollars. (Experience has shown that the introduction of new drugs does not necessarily mean that other drugs will drop in price.)

Here's a clinical trial I'd like to see performed: Vitamin D restored to healthy levels of 50-100 ng/ml over an extended period and compared to a group treated with placebo. My prediction is that there will be dramatic differences in bone density. (Small studies have been performed, but no large, long-term trials of the sort that would yield real firepower.) Or, how about vitamin D to true therapeutic levels over 5 years compared head-to-head with one of the drugs. My prediction: little difference.

Vitamin D also provides an enormous panel of health benefits beyond restoration of bone density, like rise in HDL, drop in triglycerides, facilitation of control over CT heart scan scores, drop in fracture risk, drop in blood pressure and C-reactive protein, reduction in risk for colon, prostate, and breast cancer. None of the drugs can hope to provide any of these effects, except a drop in fracture risk.

Vitamin D usually costs around $2 per month. I doubt that such trials will be performed. If I were a manufacturer of osteoporosis drugs and my career success was dependent on the increasing revenues of these drugs, I would be quaking in my shoes, hoping that the public does not learn what a powerful tool good old vitamin D is. But if you are an individual just looking for health tools, vitamin D is, in my view, amongst the most powerful natural, nutritional tools you have available with outsized health benefits.

Lose weight and HDL goes . . . down

Steve started with a miserable HDL cholesterol of 27 mg/dl. As expected, the low HDL was associated with all its evil friends: small LDL, deficiency of healthy, large HDL, high triglycerides, VLDL, and a pre-diabetic blood sugar.

Steve committed to a strict diet of reduced processed carbohydrates like wheat products, reduced meat and saturated fats. He relied on vegetables, fruit, lean proteins, and healthy oils. Over a 6 month period, he lost an impressive 39 lbs. He proclaimed that he hadn't felt this good in 30 years.

We rechecked his HDL: 25 mg/dl.

"I don't get it!" Steve declared, understandably.

There's a curious phenomenon with HDL. If you lose weight, HDL goes up--but not right away. Steve had lost a substantial quantity of weight and was continuing to lose weight when the blood work was obtained. While HDL does indeed rise with weight loss, it doesn't do so immediately. In fact, in the first two or so months after significant weight lost, HDL goes down.

Why? I don't really have an explanation, but it is a very consistent effect.

Losing weight towards ideal weight is truly an effective strategy for raising HDL. But we need to be patient. If you've lost many pounds like Steve did, then waiting at least two months after weight has stabilized may be necessary to fully gauge the effect on raising HDL.

Addictive Foods

Kraft Foods, Inc. is manufacturer of Kool Aid, Oscar Mayer, Kraft Macaroni and Cheese, Velveeta, Honey Maid Grahams, and hundreds of other processed food products. Post cereals also falls under the umbrella of Kraft with products like Raisin Bran, Post Toasties, and Fruity Pebbles. Annual revenues in 2006 for Kraft: $34.4 billion. A big operation with enormous influence over our eating habits.

Nabisco is manufacturer of Oreos, Ritz Crackers, Chips Ahoy and many others. Like Kraft/Post, it is also a big player.

While Nabisco was owned for several years by tobacco giant RJ Reynolds, in 2000 it was acquired by Philip Morris, another big tobacco manufacturer.

More recently in Spring, 2007, Philip Morris (now called Altria--you'd change your name, too, if it was synonymous with dirt) spun off its Kraft subsidiary for a big profit. However, the management structures remain intertwined.

In other words, despite the shuffling of shares, the two industries, big tobacco and big food, are in many respects one and the same.

Is it any surprise that the same industry that made billions of dollars pushing addictive nicotine products responsible for the deaths of hundreds of thousands of people is now intimately involved with addictive products produced and marketed by the processed food industry?

If you believe that food manufacturers are innocently and honestly conducting their businesses, simply think back to the testimony provided in front of Congress during the tobacco industry hearings. Broad deception, concealed truths, and outright lies were commonplace. There was no conscience involved. This was about money--and lots of it.

Why should the processed food industry, intimate with the tobacco industry, be any different?

If you want control over heart disease and your heart scan score, buy produce and buy local. Spend your time in the produce aisle, not the cereal or chip aisle. Unprocessed food, unadorned by bright labels, cartoon animals, American Heart Association endorsements, that's what we should seek.

Heart Scan Curiosities #7




Here's a situation that crops up once in a while, occurring in perhaps 2% of heart scans.

The white within the circled area represents calcium, and thereby atherosclerotic plaque, situated immediately at the "mouth", or opening, of the the right coronary artery. What is somewhat unusual is that this plaque is not principally coronary, but aortic. That is, the plaque is mostly situated in the large vessel called the aorta. The three coronary arteries arise from the aorta.

In this instance, the aortic plaque involves the mouth of the right coronary artery. (In views not shown, the plaque also extends into the artery as well.) I call this a "double whammy" because the same plaque can post risk for heart attack and stroke.

Generally, aortic plaques pose risk for stroke. When aortic plaque fragments, little bits and pieces can travel upward to the brain and block an artery, thus a stroke.

In the coronaries, disrupted ("ruptured") plaques don't generally shower debris, but permit blood clot formation, resulting in heart attack.

This plaque, however, poses the theoretical risk of both heart attack and stroke because of its strategic location.

Should a plaque like this be handled any differently? I don't think so. But it does provide another reason to take atherosclerotic plaque in any artery seriously.

The nutrition counterculture

When we look back over our American nutritional history over the last 50 years, it's hard not to come to the conclusion that much of the innovation in nutrition did not come from official agencies like the Food and Nutrition Board of the Institute of Medicine, the National Academy of Sciences, the FDA, the USDA, or the AMA.

Instead, it came from the popular culture. It came from bold, extravagant claims made by maverick figures like Ancel Keys, Nathan Pritikin, Dean Ornish, and Robert Atkins. Of course, some ideas have now fallen by the wayside, dismissed in a broad American "experiment" as ineffective, impractical, or kooky. But it permitted experimentation on an extraordinary scale with millions of people following a particular strategy at a time.

The advice of the official agencies tended to be reactionary. When nutritional deficiencies (remember those?) of the early 1900s were prevalent, they issued advice on food choices to help alleviate deficiencies. When deficiency transformed into excess after World War II, "smart" food choices from food groups and "sensible eating" became the theme.

Unfortunately, the advice was always adulterated by the enormous influence of various special interests, anxious to protect their national franchise. Powerful groups like the meat industry, wheat producers, and the dairy industry all made sure they had a big hand in crafting and influencing what was told to the American people.

The result: the advice offered by official groups has always represented the compromise of what some agency wished to convey to the people and the very powerful input of industry. What if the government decided to advise us what automobile to buy? Imagine the uproar in the auto industry when Washington tells us to buy Toyota for fuel economy and reliability. How long would that advice last?

That's why almost no knowledgeable adult follows the advice of the USDA, the National Academy of Sciences, or the Food Pyramid. I believe that we all intuitively recognize that the advice is watered-down, sometimes silly, sometimes downright unhealthy.

Nonetheless, the national experiment in diet that has taken place since 1950 has led to a collective wisdom of what is good and what is bad. The most productive conversations on nutrition therefore take place outside of the USDA and Washington. It occurs, instead, in places like bookstores, websites, and the media. Of course, there's lots of misinformation and profiteering in these sectors, as well. But like the enormous force unleashed by the collective wisdom of those contributing to the Wikipedia phemonenon, we've zig-zagged to something closer to the truth than ever uttered by an official agency.

Prescription vitamin D

Niacin:

Over-the-counter: $2-5 per month
Prescription: $120 per month


Fish oil:


Over-the-counter: $3-6 per month
Prescription: $120 per month


Vitamin D:


Over-the-counter: $2 per month
Prescription: $70 per month



With vitamin D in particular, the prescription form is vastly inferior to the over-the-counter preparation. This is because the prescription form is ergocalciferol, or vitamin D2, not the effective human form, vitamin D3 or cholecalciferol.

When you're exposed to sun, what form of vitamin D is activated in the skin? It's all vitamin D3, no vitamin D2 whatsoever. Vitamin D3 is also far more effective than D2. People taking D3 (as long as it's oil-based) easily obtain healthy levels of vitamin D in the blood. People taking 50,000 units per day of D2 (the recommended quantity) remain miserably deficient, with minor increases in vitamin D blood levels. In short, D2 barely works at all. D3 works easily and effectively.

Moreover, D2 is the plant-based form. It is a form not found naturally in humans. D3 is the mammalian form, the same found in humans that exerts all its biologic benefits.

Then why is the prescription form of vitamin D2 (brand names Driscol and Calciferol) more expensive?

It's the same old pharmaceutical industry scam: Look for something patent protectable, regardless of whether it's superior to the non-patent protectable product, then sell it for exagerated profits. Though it is inferior and the science and clinical experience prove that it's inferior, you can still fool lots of people, including prescribing physicians. So what if you only make $50 or $100 million?

Don't fall for it. Prescription doesn't necessarily mean superior. In fact, the prescription form may be significantly inferior, as with vitamin D2. But the pharmaceutical industry carries such power and persuasion, who's going to know?

Nutrition activist Mike Adams













I borrowed the above comic from the website of nutritionist, more properly nutrition activist and author, Mike Adams. His website, www.newstarget.com, was a pleasant surprise.

I was actually looking for some thoughts on pharmaceutical advertising and its pervasive and destructive effects and came across one of Adam's reports, Pharmaceutical television advertising is a grand hoax at http://www.newstarget.com/021526.html. The piece is a rant against the pharmaceutical industry's constant bombardment of the media, who have also been co-opted into their service, enticed by the enormous advertising revenues the drug industry brings.

But I was surprised to find an insightful, informative website on health issues, particularly healthy eating that rejects the manufactured food industry's intensive effort to persuade us to eat their products. While I don't agree with everything Adams has to say, his website provides some great food for thought. He also provides lots of downloadable information.

There's also some great laughs at his poke at the pharmaceutical industry with his Disease Mongering Engine at http://www.newstarget.com/disease-mongering-engine.asp, in which you get to create your own diseases. I got a real kick out of this.

CT scans and radiation exposure



The NY Times ran an article called

With Rise in Radiation Exposure, Experts Urge Caution on Tests at

http://www.nytimes.com/2007/06/19/health/19cons.html?_r=1&adxnnl=1&oref=slogin&adxnnlx=1182254102-vQpytpx6W/Z9gvAaNPDZvA



“This is an absolutely sentinel event, a wake-up call,” said Dr. Fred A. Mettler Jr., principal investigator for the study, by the National Council on Radiation Protection. “Medical exposure now dwarfs that of all other sources.”


Where do CT heart scans fall?

Let's first take a look at exposure measured for different sorts of tests:



Typical effective radiation dose values

Computed tomography Milliseverts (mSv)

Head CT 1 – 2 mSv
Pelvis CT 3 – 4 mSv
Chest CT 5 – 7 mSv
Abdomen CT 5 – 7 mSv
Abdomen/pelvis CT 8 – 11 mSv
Coronary CT angiography 5 – 12 mSv

Non-CT Milliseverts (mSv)

Hand radiograph Less than 0.1 mSv
Chest radiograph Less than 0.1 mSv
Mammogram 0.3 – 0.6 mSv
Barium enema exam 3 – 6 mSv
Coronary angiogram 5 – 10 mSv
Sestamibi myocardial perfusion (per injection) 6 – 9 mSv
Thallium myocardial perfusion (per injection) 26 – 35 mSv

Source: Cynthia H. McCullough, Ph.D., Mayo Clinic, Rochester, MN


If you have a heart scan on an EBT device, then your exposure is 0.5-0.6 mSv, roughly the same as a mammogram or several standard chest x-rays.

A heart scan on a 16- or 64-slice multidetector device, your exposure is around 1.0-2.0 mSv, about the same as 2-3 mammograms, though dose can vary with this technology depending on how it is performed (gated to the EKG, device settings, etc.)

CT coronary angiography presents a different story. This is where radiation really escalates and puts the radiation exposure issue in the spotlight. As Dr. Cynthia McCullough's chart shows above, the radiation exposure with CT coronary angiograms is 5-12 mSv, the equivalent of 100 chest x-rays or 20 mammograms. Now that's a problem.

The exposure is about the same for a pelvic or abdominal CT. The problem is that some centers are using CT coronary angiograms as screening procedures and even advocating their use annually. This is where the alarm needs to be sounded. These tests, as wonderful as the information and image quality can be, are not screening tests. Just like a pelvic CT, they are diagnostic tests done for legimate medical questions. They are not screening tests to be applied broadly and used year after year.

Always be mindful of your radiation exposure, as the NY Times article rightly advises. However, don't be so frightened that you are kept from obtaining truly useful information from, for instance, a CT heart scan (not angiography) at a modest radiation cost.



Detail on radiation exposure with CT coronary angiograms on multidetector devices can be found at Hausleiter J, Meyer T, Hadamitzyky M et al. Radiation Dose Estimates From Cardiac Multislice Computed Tomography in Daily Practice: Impact of Different Scanning Protocols on Effective Dose Estimates. Circulation 2006;113:1305-1310, one of several studies on this issue.