Apo E4 and sterols: Lethal combination?

11. février 2011 William Davis (24)

Phytosterols, or just "sterols" to its friends and neighbors, are a group of cholesterol-like compounds that are abundant in the plant world. Lately, however, sterols have proliferated in the processed food supply, thanks to the observation that sterols reduce LDL cholesterol when ingested by humans.

This must mean that sterols are good for you.

Uh oh. Wait a minute: There is a rare disease called sitosterolemia in which there is unimpeded intestinal absorption of all sterols ingested through diet. They must have really low LDL cholesterols! Nope. They develop coronary disease--heart attacks, angina, etc.--in their late teens and 20s. In other words, if sterols gain access to your bloodstream, they are bad. Very bad.

Conventional thinking is that only a modest quantity of dietary sterols gain access to the bloodstream. But there are two potentially fatal flaws in this overly simplistic line of thinking:

1) What happens when you load up your diet with "heart healthy" sterols, such as those in "heart healthy" margarines, mayonnaise, and yogurt, effectively increasing sterol intake 10-fold?

2) What happens in people with the genetic pattern, apo E4, that is carried by 25% of the general population that permits much greater intestinal absorption of sterols?

My prediction: Despite the fact that sterols reduce LDL, they may, in certain genetically-susceptible people, such as those with apo E4, increase risk for heart disease: heart unhealthy.

Here are two studies that suggest that greater sterol absorption in people without sitosterolemia are at higher risk for heart disease:

Alterations in cholesterol absorption/synthesis markers characterize Framingham offspring study participants with CHD

Plasma sitosterol elevations are associated with an increased incidence of coronary events in men: results of a nested case-control analysis of the Prospective Cardiovascular Münster (PROCAM) study

Glucomania

8. février 2011 William Davis (52)

As I suggested in a previous Heart Scan Blog post, a glucose meter is your best tool to:

1) Lose weight
2) Cure diabetes
3) Reduce or eliminate small LDL particles
4) Achieve anti-aging or age-slowing effects

But it means getting hold of a glucose meter and applying it in a very different way.

Diabetics typically check fasting morning glucose and again several times during the day to assess medication effects. But you and I can measure blood glucose to assess the immediate effects of food choices--two very different approaches.

The concept is simple: Check a blood glucose just prior to a food or meal of interest, then one hour after finishing.

Let's take two hypothetical breakfasts. First, oatmeal, a so-called "low-glycemic index" food. Slow-cooked, stone ground oatmeal with skim milk, a handful of walnuts, just a few blueberries.

Blood glucose just prior: 95 mg/dl
Blood glucose one hour after finish: 175 mg/dl

I made those numbers up, but this is a fairly typical response for many adults. (This is why "low-glycemic index" is an absurd notion.) This kind of response causes 1) glycation, the adverse effects of glucose modification of proteins that leads to cataracts, kidney disease, cartilage damage and arthritis, atherosclerosis, skin wrinkles, etc., 2) high insulin response that cascades into fat deposition, especially visceral fat ("wheat belly"), and 3) glucotoxicity, i.e., direct damage to the pancreas that can, over years, lead to diabetes.

Next day, let's try a breakfast of 3-egg omelet made with green peppers, sundried tomatoes, and olive oil.

Blood glucose just prior: 95 mg/dl
Blood glucose one hour after finish: 93 mg/dl

This is a meal of virtually zero-glycemic index. This kind of response triggers none of the effects experienced following the oatmeal. Repeated over time and you fail to trigger glycation, you stop provoking insulin, and visceral fat mobilizes rather than accumulates: you lose weight, particularly around the middle.

We therefore aim to keep the one-hour blood glucose 100 mg/dl or less. If you start with a high fasting blood glucose of, say, 118 mg/dl, then we aim to keep the one-hour after-eating blood glucose no higher than the pre-meal.

It works. Plain and simple.

This makes the primary care docs crazy: "How dare you check your blood sugar! You're not diabetic." In truth, blood glucose meters are relatively simple devices to use. The test strips and lancets will cost a few bucks. (The meters themselves are either low-cost or free, just like Gillette sometimes sends you a beautiful new razor for free but expects you to buy the blades). These are direct-to-consumer products. While a prescription written by your doctor for a glucose meter and supplies helps insurance cover the costs, you can easily get these devices without a prescription. Some stores, like Target, keep their devices out on the shelves with the shampoo and bath soap.

Warning: Anyone taking diabetes drugs will have to consult with their doctors about the safety of such an approach. Because this approach can actually cure diabetes in some people, if you are taking some diabetes drugs, especially glyburide, glipidize, and glimepiride, you can experience dangerously low blood sugars, just as any non-diabetic taking these drugs would.

Diarrhea, runny noses, and rage: Poll results

6. février 2011 William Davis (19)

Here are the results of the week-long poll asking the question:

Have you experienced a wheat re-exposure syndrome?

Yes, undesirable gastrointestinal effects 223 (41%)
Yes, asthma or sinus problems 51 (9%)
Yes, joint pains and/or swelling 85 (15%)
Yes, emotional or other nervous system effects 59 (10%) No, nothing, nada 107 (19%)

No. Wheat is sacred and you're all nuts 13 (2%)

There are several interesting observations to make from this informal poll. First, as I have observed, the most common wheat re-exposure syndrome is gastrointestinal, usually involving cramps, diarrhea, and lame explanations to your dinner partner.

Second most common: joint pains and/or swelling.

Third: asthma or sinus congestion.

The incidence of emotional or nervous system effects surprised me a bit. I didn't expect 10% of people to share this effect. This is an effect I also experience personally, along with the gastrointestinal consequences.

To be sure, this is a skewed poll, since many people likely come to this blog in the first place because of such issues. But I was nonetheless impressed with the relatively modest proportion of people who did not share such a re-exposure syndrome: only 19%.

Beyond the interesting numbers provided by readers, a good many also provided some fascinating and graphic comments. Here's a sample:

Sassy said:

Reflux -- starts a day later and goes for up to a week. And Bloat:2-5 inches on my waistline in a day, lasting up to three. Miserable. And why, having experienced this once, have I done it often enough to verify the connection with certainty? I am working on that one.

Anonymous said:

Wheat increased hunger with even with only a small amount. Crackers in soup was enough to set it off.

Also, when I was trying to get off wheat, I noticed that 2 eggs and 2 bacon and I could go 5 hours before hunger, or 2 eggs and 2 bacon and toast was good for three hours before hunger. That was the final step to giving up wheat. Now three years and 59 Kg [130 lbs!] loss later, there is no doubt in my mind that wheat is evil, and I do not regard it as suitable for human food. I speculate that it increases ghrelin or cortisol.

Anna said:

For me, in the two years since I began eating Gluten-Free (Low Carb for 6 years), the few times I've had re-exposure to wheat, I've experienced fast onset and intense abdominal pain (known exposure during the daytime) and heartburn, indigestion, intense nausea, and disrupted sleep (exposures during evening meal not discovered until the next day).

My husband wants to think he's fine with wheat (though I know that he has at least one gene that predisposes to celiac), but IMO, he isn't. He eats no wheat at home because that's the default, and he's OK with that. But if he goes out to dinner at a restaurant that serves "good" artisan bread, he will indulge in a few bites (he does restrict his carb intake, so it's still a limited amount). More often than not, he will sleep fitfully on those nights, snore more, and wake in the night with indigestion. He wants to bury his head in the sand and will only acknowledge the discomfort being due to eating too many carbs, not the wheat itself. I notice he sleeps fine if he eats a small amount of potato or rice. Go figure.

Our 12 yo son has been eating GF for two years also. About 6 months into GF, he unknowingly ate wheat a number of times (licorice candy laces at a friend's house), which resulted in outbreaks of canker sores in his mouth each time. He also exhibits mood and behavior changes when he eats wheat, which is what prompted me to test him for gluten intolerance in the first place.

Mark said:

If I go for 3-4 days without wheat, grains or sugar and then go out and binge on a pizza and ice cream or something like that I become explosive within 20 minutes to an hour. It's like a wheat and sugar rage.(I'm not saying this is an excuse for rage, I'm saying it has happened to me and I believe partly do to re-exposure) It seems the combination of the wheat plus sugar can be the worst.

I get red rashes around my neck sometimes right away and sometimes up to a day or later and sometimes get bad diarrhea.

I think it can be almost dangerous to cut things like gluten and sugar suddenly out of the diet without being very serious about keeping them out. I have found it very hard to cut out wheat without binging on it later after 4 or 5 days. I don't believe that my symptoms are just psychological either.

I was also diagnosed with ADHD as a young kid and then rediagnosed with adult ADHD by 3 different doctors. I also have bouts of mania at times too. I am considering trying to go completely gluten/refined carbohydrate free to see if it helps with the symptoms and gives me some relief.

I have never been tested for celiac or gluten intolerance but I would like to be. I think it would help explain to my girlfriend, family and friends why I can't go out and eat pizza or have a beer or ice cream. Right now they all think I'm a hypochondriac. At times I have experienced an intense fatigue the next day like I can't wake up and also sharp pains in my body and headaches.

Anonymous said:

I ditched wheat a year ago after my wife was diagnosed celiac. I immediately experienced a number of health improvements (blood lipids, sleep, allergies, etc.).

Fast forward: We all suffered some inadvertent wheat exposure yesterday via some chocolate covered Brazil nuts (of all things). This accidental A-B-A experimental design resulted in the following:

1. My celiac wife experienced what she calls "the flip" within an hour of exposure (i.e., intense GI distress).
2. My five-year old son went to bed with some wicked reflux.
3. I woke up with some twinges in my lower back and an ache in my football-weary left shoulder. I was also complaining to my wife about fuzzy-headedness that refused to respond to caffeine or hydration. I could only describe it as "carb flu"...

And then I read your post!

Anne said:

Depression, agitation and brain fog if I get glutened. Some times this comes with abdominal pain and a rash on my back - I think it is dose dependent. Cross contamination with wheat is a big issue when eating out. Needless to say, I eat out infrequently and then try to stick with the restaurants that are the most aware of gluten issues.

Terrence said:

Several weeks ago, I started Robb Wolf's 30 day challenge.

The first two weeks were brutal - calling it a withdrawal flu was a massive understatement. So, I thought I would try some wheat and see what happened (could not be worse, I thought). Well, it was.

I still felt extremely crappy, but I was now MASSIVELY GASSY - AMAZINGLY GASSY, for about 48 hours - flatulence on wheels, in spades. I did not go out at all in those 48 hours - when the gas came on, it went out, LONG, and QUICKLY and LOUDLY.

I am easing back into wheat and grain free. I am gluten free today and tomorrow (Sunday and Monday). I expect to try a small amount of wheat on Thursday, then maybe a little more the following Thursday.

Donald said:

I have limited wheat consumption severely over the last 8 months. I have lost 120 pounds, no longer have bouts of illness, asthma, depression, or low energy. I also take vitamin D and other supplements that have helped (many are from your blog recommendations).

Last week I ate a small piece of cake and dessert pizza. Shortly thereafter I started sneezing, had a scratchy throat, and runny nose. I called off sick the next day for fear of being contagious. My symptoms subsided quickly and I am now attributing them to the processed flour eaten at my work luncheon. I think it was an allergic reaction since I recall having much more severe symptoms fairly regularly in my wheat eating days. Those were attributed to an "allergy" of unknown origin back then.

John said:

I suffered from Ankylosing Spondylitis, Iritis, Plantar Fasciits, etc for a number of years. I restricted carbs, especially wheat and I've been symptom free for the past two years now.

Lori said:

I found wheat to be one of the worst things for giving me gas bloating and acid reflux, and I'd had sinus and nasal congestion my whole life. When I ate that cookie, it just re-introduced old problems. I can occasionally eat a gluten-free, grainy goody at my party place without any side effects. I also have a little sprouted rice protein powder every day.

Another odd thing about wheat: it was hard for me to stop eating it once I started. I could go through a whole box of cookies in one sitting, even though I wasn't a binge eater. But I can have a couple of gluten-free cookies and stop.

Paul said:

Except for one slip up this recently past holiday season, I've been sugar-grain-starch free since July 2008. Mental fog was the most noticable re-exposure symptom I had.

My mom has had the worst acid-reflux for 40-plus years. It had become so bad that she was on three medications just to deal with the symptoms. After much training and coaxing, I finally got across to her how to totally get off wheat. Not at all to my surprise, after being wheat free for a few weeks, she lost weight and her acid reflux was GONE!

But she had been addicted to wheat for so long, she relapsed, and the reflux fire soon returned. Wheat must be akin to heroin with some people. Even though they know it's very bad for them, they can't help themselves.

Onschedule said:

Re-exposure often leads to diarrhea for me, or such a heavy feeling of tiredness that all I can do is lay down and pass out. A local pizzeria makes a darn good pie, but since I started practicing wheat-avoidance, I can't keep my eyes open after eating there. I can't say for sure that it's the wheat causing it, but definitely something in the crust. Diarrhea, on the other hand, is definitely triggered by the wheat for me.

My mom complained of gastric reflux for years, but never filled the prescriptions that her doctors would give her. I suggested wheat-avoidance- gastric reflux disappeared within 3 days and hasn't returned (has been 6 months now). I've already commented elsewhere on this blog about how much weight and bloating she has lost...

Steve said:

Interesting that I should sit down, turn on my computer and find your poll. Having gone several weeks, maybe months, avoiding gluten, I took my daughter and her boyfriend out to eat because my wife has been working late at the office lately. Although I was thinking I would just eat my steak and chicken, I succumbed to the temptation of eating about a dozen greasy, breaded shrimp that my daughter and her boyfriend ordered. It's 1:39am and I still do not feel sleepy. My left nostril is completely blocked, my stomach feels bloated, really, really full and I've been burping. In your poll I checked sinus problems but could have chose gastrointestinal or nervous problems just as well.

A few weeks ago my daughter brought home a pizza and, once again, despite my knowing that I shouldn't, I ate a couple of pieces. I was sick for two days. The pain in what I think was my transverse colon was so bad I thought I might have to go to ther emergency room. Before I ate the pizza I had never gone grain-free that long before. I did this after reading Robb Wolf's book.

I AM CONVINCED. No more wheat for me! Please, Lord, give me strength.

LV said:

What don't I experience! I typically avoid wheat (and gluten for that matter) as I'm pretty sure it makes me sick, but when I slip (or someone else slips me some) I end up with massive amounts of joint swelling and tenderness, diarhea, cramping, gas, bloating and brain fog. I'm absolutely miserable. Just that alone is enough to keep me off gluten. I have RA, so if I have repeated exposures I'll have a flare which SUCKS!

A carpenter is only as good as his tools

4. février 2011 William Davis (18)

A carpenter wouldn't build a house using just his bare hands. You shouldn't stumble your way through nutritional blunders without the proper tools to guide you.

Best tool to lose weight:

Best tool to cure diabetes:

Best tool to reduce small LDL particles:

Best tool for anti-aging:

Observing blood sugar excursions after eating is proving to be among the most powerful tools I have come across.

The perfect Frankengrain

4. février 2011 William Davis (25)

Pretend I'm a mad food scientist. I'd like to create a food that:

1) Wreaks gastrointestinal havoc and cause intractable diarrhea, cramps, and anemia.
2) Kills some people who consume it after a long, painful course of illness.
3) Damages the brain and nervous system such that some people wet their pants, lose balance, and lose the ability to feel their feet and legs.
4) Brings out the mania of bipolar illness.
5) Amplifies auditory hallucinations in people with paranoid schizophrenia.
6) Makes people diabetic by increasing blood sugars.
7) Worsens arthritis, such as osteoarthritis and rheumatoid arthritis.
8) Triggers addictive eating behavior.
9) Punishes you with a withdrawal process if you try to remove it from your diet.

I will develop a strain that is exceptionally hardy and tolerates diverse conditions so that it can grow in just about any climate. It should also be an exceptionally high yield crop, so that I can sell it cheaply to the masses.

Now, if my evil scheme goes as planned, I will then persuade the USDA that not only is my food harmless, but it is good for health. If they really take the bait, they might even endorse it, create a diet program around it.

Dag nabit! Such a plan has already been implemented. Another evil food scientist already beat me to the punch. The food is called wheat.

Diabetes: A study in aging

3. février 2011 William Davis (0)

Diabetics experience long-term health difficulties, including atherosclerosis/heart attacks, peripheral vascular disease, hypertension, cataracts, kidney disease, neuropathies, male erectile dysfunction, osteoarthritis, and colorectal cancer. They also die, on average, 10 years earlier than non-diabetics.

In effect, diabetics compress their lives into a shorter period of time. They experience all the "complications" of aging at a younger age. People without diabetes, of course, can develop atherosclerosis, cataracts, kidney disease, etc., but they tend to do so later in life compared to diabetics.

One index of the rate of aging (but not chronologic age itself) is hemoglobin A1c, or HbA1c, a "moving average" of glycated hemoglobin, i.e., glucose-modified hemoglobin. Blood glucose glycates hemoglobin linearly and irreversibly; measuring HbA1c thereby provides an index of the last 60 or so days average blood glucose.

To put HbA1c values into perspective:

Average HbA1c of hunter-gatherers: 4.5%
Average HbA1c for Americans: 5.6%
American Diabetes Association definition of diabetes: 6.5% or greater
American Diabetes Association definition of adequate control of diabetes: 7.0% or less

Why do diabetics age faster? There are likely several reasons. One important reason is glycation, as indexed by HbA1c. Glycated proteins in the lens of the eye causes cataracts. Glycated proteins in cartilage leads to arthritis. Glycated LDL particles (apo B) leads to atherosclerosis. Glycated nerve cells causes neuropathy. And so on.

If glycation underlies many of the phenomena of aging, then we might surmise that:

1) The less you glycate, the slower you age.
2) The more you glycate, the faster you age.

Therefore, the higher the HbA1c, the faster you are aging.

What foods increase HbA1c? Carbohydrates. That bowl of slow-cooked, stone ground oatmeal? A one-hour after-eating blood sugar of 170 mg/dl is common. Your doctor says that's okay because it's below 200 mg/dl and you don't "need" medication yet.

Fish oil: The natural triglyceride form is better

2. février 2011 William Davis (43)

If you have a choice, the triglyceride form of fish oil is preferable. The triglyceride form, i.e., 3 omega-3 fatty acids on a glycerol "backbone," is the form found in the body of fish that protects them from cold temperatures (i.e., they remain liquid at low ambient temperatures).

Most fish oils on the market are the ethyl ester form. This means that the omega-3 fatty acids have been removed from the glycerol backbone; the fatty acids are then reacted with ethanol to form the ethyl ester.

If the form is not specified on your fish oil bottle, it is likely ethyl ester, since the triglyceride form is more costly to process and most manufacturers therefore boast about it. Also, prescription Lovaza--nearly 20 times more costly than the most expensive fish oil triglyceride liquid on a milligram for milligram basis--is the ethyl ester form. That's not even factoring in reduced absorption of ethyl esters compared to triglyceride forms. Remember: FDA approval is not necessarily a stamp of superiority. It just means somebody had the money and ambition to pursue FDA approval. Period.

Taking any kind of fish oil, provided it is not overly oxidized (and thereby yields a smelly fish odor), is better than taking none at all. All fish oil will reduce triglycerides, accelerate clearance of postprandial (after-eating) lipoprotein byproducts of a meal (via activation of lipoprotein lipase), enhance endothelial responsiveness, reduce small LDL particles, and provide a physical stabilizing effect on atherosclerotic plaque.

But if you desire enhanced absorption and potentially lower dose to achieve equivalent RBC omega-3 levels, then triglyceride forms are better.

Here are cut-and-pasted abstracts of two of the studies comparing forms of fish oil.

Bioavailability of marine n-3 fatty acid formulations.

Dyerberg J, Madsen P, Moller JM et al.

Department of Human Nutrition, Faculty of Life Sciences, University of Copenhagen, Copenhagen, Denmark.

Abstract

The use of marine n-3 polyunsaturated fatty acids (n-3 PUFA) as supplements has prompted the development of concentrated formulations to overcome compliance problems. The present study compares three concentrated preparations - ethyl esters, free fatty acids and re-esterified triglycerides - with placebo oil in a double-blinded design, and with fish body oil and cod liver oil in single-blinded arms. Seventy-two volunteers were given approximately 3.3g of eicosapentaenoic acid (EPA) plus docosahexaenoic acid (DHA) daily for 2 weeks. Increases in absolute amounts of EPA and DHA in fasting serum triglycerides, cholesterol esters and phospholipids were examined. Bioavailability of EPA+DHA from re-esterified triglycerides was superior (124%) compared with natural fish oil, whereas the bioavailability from ethyl esters was inferior (73%). Free fatty acid bioavailability (91%) did not differ significantly from natural triglycerides. The stereochemistry of fatty acid in acylglycerols did not influence the bioavailability of EPA and DHA.

(Full text of the Dyerberg et al study made available at the Nordic Naturals website here.)

Eur J Clin Nutr 2010 Nov 10.

Enhanced increase of omega-3 index in response to long-term n-3 fatty acid supplementation from triacylglycerides versus ethyl esters.

Neubronner J, Schuchardt JP, Kressel G et al.

Institute of Food Science and Human Nutrition, Leibniz Universität Hannover, Am Kleinen Felde 30, Hannover, Germany.

Abstract

There is a debate currently about whether different chemical forms of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are absorbed in an identical way. The objective of this study was to investigate the response of the omega-3 index, the percentage of EPA+DHA in red blood cell membranes, to supplementation with two different omega-3 fatty acid (n-3 FA) formulations in humans. The study was conducted as a double-blinded placebo-controlled trial. A total of 150 volunteers was randomly assigned to one of the three groups: (1) fish oil concentrate with EPA+DHA (1.01?g+0.67?g) given as reesterified triacylglycerides (rTAG group); (2) corn oil (placebo group) or (3) fish oil concentrate with EPA+DHA (1.01?g+0.67?g) given as ethyl ester (EE group). Volunteers consumed four gelatine-coated soft capsules daily over a period of six months. The omega-3 index was determined at baseline (t(0)) after three months (t(3)) and at the end of the intervention period (t(6)). The omega-3 index increased significantly in both groups treated with n-3 FAs from baseline to t(3) and t(6) (P < 0.001). The omega-3 index increased to a greater extent in the rTAG group than in the EE group (t(3): 186 versus 161% (P < 0.001); t(6): 197 versus 171% (P < 0.01)). Conclusion: A six-month supplementation of identical doses of EPA+DHA led to a faster and higher increase in the omega-3 index when consumed as triacylglycerides than when consumed as ethyl esters.

Diarrhea, asthma, arthritis--What is your wheat re-exposure syndrome?

30. janvier 2011 William Davis (52)

Have you experienced a wheat re-exposure syndrome?

As I recently discussed, gastrointestinal distress--cramps, gas, diarrhea--is the most common "syndrome" that results from re-exposure to wheat after a period of elimination.

Others experience asthma, sinus congestion and infections, mental "fogginess" and difficulty concentrating, or joint pains and/or overt swelling.

Still others say there is no such thing.

Let's take a poll and find out what readers say.

Marathoners, triathletes, and heart disease

30. janvier 2011 William Davis (0)

Curious thing: People with lipoprotein(a) gravitate towards elite levels of exercise.

I tell my lipoprotein(a) patients that, if they want to see a lot of other people with lipoprotein(a), go to a marathon or triathlon.

This effect applies more to males than to females, just as the fascination with numbers seems to be confined to men, too. That's why I've posted in past about the "prototypical" lipoprotein(a) male.

I believe this is a big part, perhaps the only, reason why there seems to be a modest increased risk for cardiovascular events despite high exercise levels in marathoners. It has nothing to do with the exercise itself; it has to do with the kind of people who choose to exercise at this level.

The best fish oil

29. janvier 2011 William Davis (30)

The best fish oils available are the liquid forms. Contrary to many people's expectations, the best liquid fish oils have no fishy odor or taste.

I use a lot of liquid fish oils because of the higher doses we use in the Track Your Plaque program, as well as our strategy of high-dose fish oil to reduce lipoprotein(a). Women, in particular, don't like taking the oodles of capsules required to achieve the higher doses we need. So the ladies really like the liquid forms.

The best liquid fish oils are non-fishy, highly-concentrated, and come in the better absorbed triglyceride form. Many capsules, including prescription Lovaza, are the less well-absorbed ethyl ester form. Several studies, such as this one, have now demonstrated that the naturally-occurring triglyceride form yields higher blood (RBC) levels of omega-3 fatty acids, likely due to more efficient digestion via pancreatic lipase.

While there are many good forms of fish oil and only a few bad, these are the best of the best:

Pharmax
The Pharmax Finest Pure Fish Oil with Essential Oil of Orange contains 1800 mg EPA + DHA per teaspoon. This is the preparation I've been taking.

Nordic Naturals
The Nordic Naturals lemon-flavored ProOmega Liquid contains 2752 mg EPA + DHA per teaspoon, the most concentrated of any fish oil I've seen.

(This list is not exclusive. These are just two brands I've used extensively with good results.)

These highly-concentrated, triglyceride forms are more expensive, due to their concentrated nature. 1 teaspoon Pharmax fish oil, for example, provides an equivalent quantity of omega-3 fatty acids as 6 standard fish oil capsules on a milligram for milligram basis, but more like 8 to 9 capsules when absorption efficiency is factored in. The triglyceride form is also more laborious to manufacture. On our Track Your Plaque Marketplace, our Pharmax 500 ml runs $58.95 list. (500 ml provides 100 teaspoons or 600-capsule equivalent.)

Note that, minus the protection of the capsule, liquid fish oils will oxidize if not refrigerated. So be sure to keep your liquid fish oil in the fridge.

All posts by william-davis

Niacin scams

12. January 2009 William Davis (0)

In the Track Your Plaque program, we often resort to niacin (vitamin B3 or nicotinic acid) to:

--Raise HDL cholesterol
--Reduce the proportion of small LDL particles
--Shift HDL towards the healthy larger fraction (HDL2b or "large")
--Reduce lipoprotein(a), the most aggressive risk factor known

But niacin comes with a crazy "hot flush," a warm, prickly feeling that usually envelops the upper chest, neck and face that is, without a doubt, annoying. Around 1 in 20 people simply cannot tolerate any amount of niacin >100 mg, while others have no problem even into the 3000 mg per day or more range. (Tolerance to niacin is genetically determined, governed by the rapidity of metabolism to the niacin metabolite, nicotinuric acid.)

The niacin flush has spawned an entire panel of niacin-like scams, agents that sound like niacin or may even contain niacin, but exert no beneficial effect whatsoever:

Flush-free niacin--I have previously posted on this useless but ubiquitous preparation that often costs several times more than conventional niacin. Flush-free niacin, or inositol hexaniacinate, does indeed contain niacin, but it is not released in the human body. You simply pass it out down the toilet, where this preparation belongs in the first place.

Nicotinamide--Also called niacinamide. While the nicotinamide/niacinamide forms of vitamin B3 can be used to treat B3 deficiency ("pellagra"), they do not reproduce the lipid and lipoprotein effects of niacin. For our purposes, they are useless.

Niacin-containing heart-healthy supplements--These are the multi-supplements that contain a little of everything that might be beneficial for the heart, but none at a dose that provides genuine benefit. Don't throw your money away.

There's also a prescription niacin, Niaspan, that costs 20-fold more than the best over-the-counter preparation, Sloniacin. Niaspan has yielded hundreds of millions of dollars for the pharmaceutical industry. Your money, in my view, is far better spent on Sloniacin (around $12-14 per bottle of 100 tablets of 500 mg).

For more on niacin, here's an article I wrote for the Life Extension Magazine people a while back: Using Niacin to Improve Cardiovascular Health.

Deja vu all over again?

10. January 2009 William Davis (8)

HeartHawk brought a report and debate on The Heart.Org website to my attention:

Screening for risk factors or detecting disease? Debate divides the CV community. After landing on theheart.org, paste this onto your URL address:article/883239.do. (Full address: http://www.theheart.org/article/883239.do. I don't know why, but I couldn't go there directly.)

Some interesting comments:

Dr. Jay Cohn (University of Minnesota):

"They're saying that we can't identify disease very effectively so let's just stick with risk factors, which we know are very poorly predictive and nonspecific. It boggles my mind as to why they won't open up their minds to the importance of moving forward in finding better strategies to identify the disease that we are treating. It's very strange. They criticize these disease markers because they are not predictive of events, but they are looking at very short-term outcomes. We're interested in lifetime risk. We're screening people in their 40s who are concerned about morbid events in their 60s and 70s, and no trials are going to track them that long."

"You have to accept the pathophysiologic reality that heart attacks don't occur in the absence of coronary disease, and coronary disease doesn't occur in the absence of endothelial dysfunction and vascular disease, all of which now can be identified."

". . . Can we as a society and as a profession accept the idea that there is a link between the vascular abnormalities and the events? "And that that linkage is tight enough that it should allow us to accept slowing of progression of the vascular abnormalities as an adequate marker for slowing disease progression, without waiting for events to occur? As soon as you use the word surrogate, people jump up and say we have all these markers that we know don't work well—things like premature ventricular contractions [PVCs] on the electrocardiogram, LDL, HDL—but those are not the markers we're talking about. We're talking about structural and functional changes in the blood vessel and in the heart."

Wow. The idea may be starting to catch on.

As an interesting aside, Cohn et al use a 10-test panel to screen for vascular disease:

"Named for the center's benefactor, the Rasmussen score includes tests for large and small artery elasticity (compliance), resting blood pressure, blood-pressure response to moderate treadmill exercise, optic fundus photography, carotid intimal-media thickness (IMT), microalbuminuria, electrocardiography, left ventricular (LV) ultrasonography for LV volume and mass, and brain natriuretic peptide (BNP). Each test result is scored out of 10 for low, intermediate, or high risk, and the combined results yields a score that Cohn et al believe is more predictive than any of the existing standalone tests."

The counterarguments in this debate were provided by Dr. Philip Greenland (Northwestern University), who repeated his oft-used argument that, while he accepts that vascular disease can be identified, no one has proven that measuring it improves outcomes:

"We do have that evidence for risk-factor screening. Even though people criticize risk-factor assessment because it is not sensitive enough or not accurate enough, the interesting and curious thing is that we actually have evidence that if you go to the trouble of screening for risk factors and treating them, patients have better outcomes. We do not have that evidence for any of these other tests."

An interesting debate ensues that includes Track Your Plaque friend, Dr. William Blanchet, who characteristically argues persuasively in favor of broad screening for coronary disease with coronary calcium scoring:

"If we were doing our jobs in primary prevention, we would not need to look at improved intervention and secondary prevention to reduce coronary death."

Here's a shock: Dr. Melissa Shirley-Walton, the cardiologist who previously preached the "cath lab on every corner" argument seems to have undergone a change of heart:

"What if I walked up to a gentleman and said, "you are at risk for CAD, take a statin", to which he replies, "I'm afraid of those meds". BUT if he sees his calcium score........he is then convinced to be pro-active. What is so wrong with that? What is so wrong with allowing him to spend 250.00 US out of pocket in order to save the US 150,000.00 US later on?

No hard endpoints you say with intensive therapy for primary prevention? What about extrapolating from trials for secondary prevention like HATS? ARBITER2? And what exactly is the true definition of secondary prevention? Is it truly primary prevention if we already have intima thickness abnormalities, or fatty streaks? That would more likely fall under secondary prevention by today's new standards.

So, I'm all for any visual aid that will encourage compliance with life style change, necessary medical therapy and followup. If the patient is willing to spend 250.00$ to get a calcium score, so be it. Better yet, why not lower the price so everyone can have the option if they are motivated enough to seize an opportunity?"

I have to admit that I thought that Dr. Blanchet was wasting his time trying to persuade Shirley-Walton et al, but perhaps he is having an impact, though having hammered away at them for the last year or so.

These arguments, for me, eerily echo many previous debates I've heard. But I am encouraged by the more favorable treatment the notion of atherosclerosis screening is receiving. Just 5 years ago, all coronary calcium scoring would have received from the conventionalists is "more clinical studies are needed."

So perhaps the cardiology and medical worlds are inching slowly towards broad acceptance of screening for coronary and vascular disease.

BUT, screening is not sufficient. What do you do with the information?

Here is where the conventional-thinkers stop. The question that seems to occupy them: Perhaps we should screen people for hidden coronary and vascular atherosclerosis so we can better decide who needs a statin drug or a procedure.

I would pose a different challenge: We should screen people for hidden coronary and vascular atherosclerosis so we can better decide who needs to engage in an intensive program of disease reversal using natural means and as little medication and procedures as possible.

Well, perhaps in time.

Lead to Gold: The alchemy of transforming nutritional-supplement-to-medication

9. January 2009 William Davis (25)

Here's a recipe to make hundreds of millions of dollars. Others have done it and you can do it, too!

1) Identify a nutritional supplement that works.

Find some agent deemed to fall within the broad allowances of the 1994 Dietary Supplement Health and Education Act . However, because this agent is already in the public domain and is essential non-patent-protectable, you may need to develop some patent protectable aspect of its production, application, or encapsulation. This patent-protected aspect may or may not provide genuine advantage, but that's not your concern. Your concern is protecting your investment and providing the appearance of exclusivity.

2) Identify a medical indication for your product.

Choose a disease or condition that is likely to yield unquestioned efficacy, e.g., omega-3 fatty acids to reduce high triglycerides in people with familial hypertriglyceridemia (triglycerides >500 mg/dl). While this will restrict your ability to make market claims, it will not restrain your ability to sell or allow use of your agent for "off-label" applications. In fact, there are methods to surreptitiously promote the use of your product for off-label use, such as hiring experts to discuss the science behind your product with doctors who can prescribe your product. Ideally, your product's primary indication will provide a substantial market on its own to justify your investment. However, the eventual off-label sales can be substantial, even outstripping the sales generated through your primary indication.

3) Obtain at least $230 million to pay for the clinical trials required to obtain FDA approval.

You will also have to raise the capital to build the business to manufacture, distribute, and sell your product.

4) After FDA approval is obtained, your business is up and running, and distribution begins, start bashing the non-FDA-approved nutritional products that stand to compete in your market.

You could point out that only your product has actually passed through the rigorous FDA process. You could make claims regarding purity, potency, "approved by your doctor," etc., whether or not there is any truth behind the claim.

5) Buy that second vacation home in Aspen and the corporate jet you've been dreaming about! After all the risks you've taken, you deserve it!

That's it, plain and simple. It is a tried-and-true formula that has been applied many times.

It is a formula like this that brought Lovaza-brand omega-3 fatty acids to market, Niaspan brand of niacin, ergocalciferol form of vitamin D, Folbee (prescription combination B vitamins), with a slightly different spin for Synthroid (since the Armour Thyroid it is meant to replace is not a nutritional supplement, but a low-cost, generic thyroid replacement).

Whatever you do, don't EVER run a head-to-head comparative trial of your agent versus the nutritional supplement competition. For instance, NEVER compare Lovaza to supplemental fish oil capsules, matched milligram-for-milligram for EPA and DHA content. NEVER compare Niaspan to over-the-counter Sloniacin. NEVER compare Armour Thyroid to Synthroid. You never know what you might find. (Psssssttt! They might be equivalent!)

The formula is not a foolproof road paved with riches, however. There have been market failures, as well. Folbee, for instance, is hardly a household name. So there's risk involved, no question about it. But, should it all work out, the payoff can be big, VERY big, as it has been for Niaspan and Lovaza.

So, start thinking about how you might follow this formula for:

1) Cholecalciferol (vitamin D3)--e.g., for osteopenia, low HDL, or high c-reactive protein
2) Vitamin K2--also for osteopenia
3) Magnesium--for suppression of ventricular arrhythmias (especially Torsade de Pointes)
4) Iodine--for goiter and iodine deficiency
5) Vitamin C--for uric acid reduction

Who said you can't turn lead into gold?

Irvingia and Leptin Resistance: Fact or fiction?

7. January 2009 William Davis (0)

Another interview with Livin' La Vida Low Carb's Jimmy Moore

7. January 2009 William Davis (4)

I recently provided another interview for Livin' La Vida Low Carb's Jimmy Moore.

You may remember Jimmy as the irrepressible host of the Livin' La Vida Low Carb Show who lost around 200 lbs, dropping from 410 to 230 lbs on a low-carbohydrate diet.

In this hour-long interview, we discussed some of the dietary strategies that we use in the Track Your Plaque program.

Jimmy's website is definitely worth exploring. It's loaded with great interviews, including with Good Calories, Bad Calories author, Gary Taubes.

"Millions of needless deaths"

6. January 2009 William Davis (4)

"Millions of needless deaths" is the title of an editorial by Life Extension Magazine's Bill Faloon.

". . . If vitamin D’s only benefit was to reduce coronary heart attack rates by 142%, the net savings (after deducting the cost of the vitamin D) if every American supplemented properly would be around $84 billion each year. That’s enough to put a major dent in the health care cost crisis that is forecast to bankrupt Medicare and many private insurance plans."

Although I don't agree with all the over-the-top commentary that issues from Mr. Faloon or Life Extension (although I sit on their Medical Advisory Board), I agree with virtually all of the issues he raises with vitamin D.

Despite the enormously compelling observations of vitamin D potential effects in populations, the medical community's reluctance comes from the lack of treatment data. In other words, what we lack are long-term data on vitamin D supplementation vs. placebo on rate of heart attack, vitamin D vs. placebo on risk of colon cancer, etc.

The data that exists connecting vitamin D levels with cardiovascular risk originate from three population observations:

1) The NHANES data in 16,000 participants showed 20% increased risk of cardiovascular events in those with vitamin D levels <20>20 ng/ml after factoring in all standard risk factors.

Another NHANES analysis showed the high prevalence of vitamin D deficiency in those with cardiovascular disease.

2) A German study of 2500 participants that showed showed the lowest quartile of vitamin D levels (<13.3>28.4 ng/ml.

3) The Health Professionals' Follow-Up Study of 18,000 males showed a 2.4-fold increase in cardiovascular events in those with vitamin D levels <15>30 ng/ml.

While we lack treatment data (vitamin D vs. placebo) in a large population, we do have data that Suzie Rockway, Mary Kwasny (both from Rush University, Chicago) and I generated on the effect of vitamin D as a part of a broader treatment program on coronary calcium scores:

Effect of a Combined Therapeutic Approach of Intensive Lipid Management, Omega-3 Fatty Acid Supplementation, and Increased Serum 25 (OH) Vitamin D on Coronary Calcium Scores in Asymptomatic Adults.
Davis W, Rockway S, Kwasny M. Amer J Ther 2008 (Dec 15).

The impact of intensive lipid management, omega-3 fatty acid, and vitamin D3 supplementation on atherosclerotic plaque was assessed through serial computed tomography coronary calcium scoring (CCS). Low-density lipoprotein cholesterol reduction with statin therapy has not been shown to reduce or slow progression of serial CCS in several recent studies, casting doubt on the usefulness of this approach for tracking atherosclerotic progression. In an open-label study, 45 male and female subjects with CCS of >/= 50 without symptoms of heart disease were treated with statin therapy, niacin, and omega-3 fatty acid supplementation to achieve low-density lipoprotein cholesterol and triglycerides /=60 mg/dL; and vitamin D3 supplementation to achieve serum levels of >/=50 ng/mL 25(OH) vitamin D, in addition to diet advice. Lipid profiles of subjects were significantly changed as follows: total cholesterol -24%, low-density lipoprotein -41%; triglycerides -42%, high-density lipoprotein +19%, and mean serum 25(OH) vitamin D levels +83%. After a mean of 18 months, 20 subjects experienced decrease in CCS with mean change of -14.5% (range 0% to -64%); 22 subjects experienced no change or slow annual rate of CCS increase of +12% (range 1%-29%). Only 3 subjects experienced annual CCS progression exceeding 29% (44%-71%). Despite wide variation in response, substantial reduction of CCS was achieved in 44% of subjects and slowed plaque growth in 49% of the subjects applying a broad treatment program.

I also summed up the data as of early 2008 in a Life Extension article:

Vitamin D's Crucial Role in Cardiovascular Protection

I do agree with Mr. Faloon: It's time to take the vitamin D issue very seriously. Personally, I think it is foolhardy to not correct vitamin D deficiency, even in the absence of long-term treatment data.

Should we subject people living in tropical climates with vitamin D blood levels of 90 ng/ml to long-term observation? Though that has not yet been done, it has been done--in effect--through observations on the prevalence of diabetes, heart disease, and various cancers by latitude: the farther away from the equator, the greater the prevalence of these diseases.

That's more than good enough for me.

Thiazide diuretics: Treatment of choice for high blood pressure?

5. January 2009 William Davis (14)

Thiazide diuretics are a popular first-line treatment for hypertension among the primary care set.

This practice became especially well-established with the 2002 publication of the ALLHAT Study (Major Outcomes in High-Risk Hypertensive Patients Randomized to Angiotensin-Converting Enzyme Inhibitor or Calcium Channel Blocker vs Diuretic:The Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT)).

ALLHAT showed that an inexpensive diuretic like chlorthalidone (a weak diuretic in the thiazide class, similar to hydrochlorothiazide) as first-line treatment for hypertension achieved equivalent reductions in cardiovascular events (cardiovasular death and heart attack) as non-thiazide antihypertensives, lisinopril (an ACE inhibitor) and amlodipine (a calcium channel blocker, better known as Norvasc).

After 7 years of treatment, there was 14% death or heart attack among all three groups--no difference.

This was interpreted to mean that inexpensive thiazide diuretics like chlorthalidone offer as much benefit as other blood pressure medications at reduced cost.

On the surface, that's great. Anything that detracts from the ubiquitous pharmaceutical industry propaganda of bigger, better, more expensive drugs to replace old, inexpensive, generic drugs is fine by me.

But you knew there'd be more to this issue! If we accept that thiazides are equivalent to other single-drug treatments for high blood pressure, what do we do with the following issues:

--Thiazides deplete body potassium-This effect can be profound. In fact, built into the ALLHAT mortality rate is an expected death rate from potassium depletion. When potassium in the body and blood go low, the heart becomes electrically unstable and dangerous rhythms develop.

--Thiazides deplete magnesium--Similar in implication to the potassium loss, magnesium loss also creates electrical instability in the heart, not to mention exaggeration of insulin resistance, rise in triglycerides, reduction in HDL.

--Thiazides reduce HDL cholesterol

--Thiazides increase triglycerides

--Thiazides increase small LDL particles--You know, the number one cause for heart disease in the U.S.

--Thiazides increase uric acid--Uric acid is increasingly looking like a coronary risk factor: The higher the uric acid blood level, the greater the risk for heart attack. Thiazides have long been known to increase uric acid, occasionally sufficient to trigger attacks of gout (uric acid crystals that precipitate in joints, like rock candy). (Fully detailed Special Report on uric acid coming this week on the Track Your Plaque website.)

What about the advice we commonly give people to hydrate themselves generously? Yet we give them diuretics? Which is it: More hydration or less hydration? You can't have both.

Do thiazides exert an apparent cardiovascular risk reduction in a society due to its flagrant sodium obsession?

Thus, there are a number of inconsistencies in the thinking surrounding thiazides. In my experience, I have seen more harm done than good using these agents. While I cannot fully reconcile the reported benefit seen in ALLHAT with what I see in real life, all too often I see people having to take another drug to make up for a side-effect of a thiazide diuretic (e.g., high-dose prescription potassium to replace lost potassium, allopurinol to reduce uric acid, etc.). I have seen many people get hospitalized, even suffer near-fatal or fatal events from extremely low potassium or magnesium levels.

My personal view: ALLHAT or no, avoid thiazide diuretics like the plague. Sure, it might save money on a population basis, but I suspect that the ALLHAT data are deeply misleading.

What's better than a thiazide, calcium blocker, or ACE inhibitor? How about vitamin D restoration, thyroid normalization, wheat elimination?

"High-dose" Vitamin D

30. December 2008 William Davis (43)

I stumbled on one of the growing number of local media stories on the power of vitamin D.

In one story, a purported "expert" was talking about the benefits of "high-dose" vitamin D, meaning up to 1000, even 2000 units per day.

I regard this as high-dose---for an infant.

Judging by my experiences, now numbering well over 1000 patients over three years time, I'd regard this dose range not as "high dose," nor moderate dose, perhaps not even low dose. I'd regard it as barely adequate.

Though needs vary widely, the majority of men require 6000 units per day, women 5000 units per day. Only then do most men and women achieve what I'd define as desirable: 60-70 ng/ml 25-hydroxy vitamin D blood level.

I base this target level by extrapolating from several simple observations:

--In epidemiologic studies, a blood level of 52 ng/ml seems to be an eerily consistent value: >52 ng/ml and cancer of the colon, breast, and prostate become far less common; <52 ng/ml and cancers are far more likely. I don't know about you, but I'd like to have a little larger margin of safety than just achieving 52.1 ng/ml.

--Young people (not older people >40 years old, who have lost most of the capacity to activate vitamin D in the skin) who obtain several days to weeks of tropical sun typically have 25-hydroxy vitamin D blood levels of 80-100 ng/ml without adverse effect.

More recently, having achieved this target blood level in many people, I can tell you confidently that achieving this blood level of vitamin D achieves:

--Virtual elimination of "winter blues" and seasonal affective disorder in the great majority
--Dramatic increases in HDL cholesterol (though full effect can require a year to develop)
--Reduction in triglycerides
--Modest reduction in blood pressure
--Dramatic reduction in c-reactive protein (far greater than achieved with Crestor, JUPITER trial or no)
--Increased bone density (improved osteoporosis/osteopenia)
--Halting or reversal of aortic valve disease

(I don't see enough cancer in my cardiology practice to gauge whether or not there has been an impact on cancer incidence.)

My colleagues who have bothered to participate in the vitamin D conversation have issued warnings about not going "overboard" with vitamin D, generally meaning a level of >30 ng/ml.

I know of no rational basis for these cautions. If hypercalcemia (increased blood calcium) is the concern, then calcium levels can be monitored. I can reassure them that calcium levels virtually never go up in people (without rare diseases like sarcoid or hyperparathyroidism). Then why any hesitation in recreating blood levels that are enjoyed by tropical inhabitants exposed to plentiful sun that achieve these extraordinary health effects?

For the present, I have applied the target level of 60-70 ng/ml without apparent ill-effect. In fact, I have witnessed nothing but hugely positive effects.

Vitamin D Home Test

29. December 2008 William Davis (13)

The ever-resourceful Dr. John Cannell of the Vitamin D Council has announced the availability of an at-home, self-ordered vitamin D test kit for $65. The Vitamin D Council newsletter is reprinted below.

(However, please note that, as wonderful as the advice Dr. Cannell provides, I don't agree on several small points, such as the lack of need for vitamin D if you use a tanning bed or obtain "sufficient" sun; I have seen many people with dark tans, virtually all over 40 years old, who are still severely deficient. I attribute this to the lost capacity for vitamin D activation as we age.)

I have not used this service. Should anyone choose to try it, please let us know how it goes.

The Vitamin D Newsletter
December 28, 2008

The Vitamin D Council is happy to announce that we have partnered with ZRT Laboratory to provide an inexpensive, $65.00, in-home, accurate, vitamin D [25(OH)D] test. The usual cost for this test is between $100.00 and $200.00.

If you read this newsletter, you know about our interest in accurate vitamin D testing. In the next few weeks, you may read about the Vitamin D Council's quest for accurate vitamin D blood tests in the national media. Before we partnered with ZRT, we verified, repeatedly, that ZRT provides accurate and reliable vitamin D tests and that their method corresponds very well to the gold standard of vitamin D blood tests, the DiaSorin RIA.

Our ZRT service is not just inexpensive, it means no more worrying about your doctor ordering the right test or interpreting it correctly. You buy the test kit on the internet or by phone, a few days later the kit comes in the mail, you or a nurse friend do a finger stick, collect a few drops of blood, and send the blotter paper back to ZRT in the postage paid envelope provided with the kit. A week later you get results back in the mail and know accurate 25-hydroxy-vitamin D levels of you and your family.

For every test you order, ZRT will donate $10.00 to the Vitamin D Council. Please read the new page hyperlinked below on our website as it both explains the procedure and how to order the test.

http://www.vitamindcouncil.org/health/deficiency/am-i-vitamin-d-deficient.shtml

Executive summary: keep your family's 25-hydroxy-vitamin D blood test above 50 ng/ml, year around. Most adults need at least 5,000 IU per day, especially this time of year. Most children need at least 1,000 IU per day per every 25 pounds of body weight. Bio Tech Pharmacal provides high quality and inexpensive vitamin D. Currently Bio Tech Pharmacal is providing vitamin D for numerous scientific studies. To see their prices and for ordering, click the hyperlink below.

http://www.bio-tech-pharm.com/catalog.aspx?cat_id=2

As a gift to our readers for the New Year, Thorne publications have provided a free download to a basic paper about vitamin D. I wrote it earlier this year for educated lay people as well as health care practitioners. Please read this paper carefully, your family's well-being, even lives, may depend on you understanding it.

http://www.thorne.com/altmedrev/.fulltext/13/1/6.pdf

Seasons Greetings
John Cannell, MD
vitamindcouncil.org

Where do Track Your Plaque membership revenues go?

26. December 2008 William Davis (9)

People pay about $90 per year to become Members on the Track Your Plaque website. This provide access to our in-depth Special Reports, guides, webinars, and our proprietary software data tracking tools. Members can also participate in online discussions, such as those in the Track Your Plaque Forum and chats.

Why is there a charge for membership in the program and where does the money go?

Money raised from membership fees goes towards:

1) The costs of doing business, e.g., server fees, software purchases, legal fees. Hosting webinars, for instance, costs us about $99 per month for the GoToWebinar software service.

2) Software development--Our most recent round of software data tracking tools, for instance, cost us nearly $30,000. That may not be a lot from big business standards, but it is onerous enough that obtaining membership dues really helps.

3) Graphics development--A website without graphics would be awfully dull, regardless of the quality of the textual content. Some of the newest tools on the Track Your Plaque website require photography and graphics work, which can add up very quickly.

Where membership fees do NOT go:

1) In our pockets--In fact, except for the various contractors who are paid for their services (e.g., software developers), NOBODY on the Track Your Plaque staff are paid: not me, nor any of the behind-the-scenes staff. Some of the staff overlap with my office staff, but they are paid purely out of the office revenues, not out of Track Your Plaque membership dues.

2) Towards overhead costs beyond those listed above--For example, membership fees do not pay for office lease, utilities, phones, etc.

We rely on membership fees because we have chosen to remain as free of commercial bias as possible. We host no advertising, we have no behind-the-scenes corporate or institutional agendas, we show no favoritism to any business or commercial operation. We believe this permits editorial freedom that few other health websites can enjoy. (In fact, I know of no other that is so free of commercial bias, outside of small blogs or narrow-interest websites.)

If you want to see what damage commercial bias can create, just go to a health website like WebMD. I challenge you to find information that is not flagrantly biased by commercial influence, namely that of the drug industry. (According to the WebMD SEC filings, in fact, the great majority--approximately 80%--of their $331 million revenues (2007) were derived directly or indirectly from the drug industry.) This commercial bias reaches into all of WebMD's related businesses, including MedicineNet.com, RxList.com, Medscape.com, and several others.

Preventing heart disease is not a money maker, sad to say. It is, from the perspective of conventional heart care, a big money loser. Undergo a heart catheterization, hospitalization, stent or bypass for anywhere from $14,000 to well over $100,000---or pay $90 for in-depth health information that dramatically reduces the potential need for the hospital and its procedures, minimizes need for prescription medication (statins alone, of course, are a $27 billion annual revenue phenomenon), and achieves all this by maximizing nutrition, self-purchased nutritional supplements, and inexpensive heart scans. Nobody is going to make a bundle off of this approach.

So that is why we charge a membership fee. I often get a laugh from some of the comments of people on this blog or even in my office who believe that we are rolling in money from the website from membership dues. The opposite is true: We don't pay ourselves. Virtually every penny is reinvested back into the website to better serve the Members.

Incurable wheataholics

2. November 2007 William Davis (22)

Greg slumped back in his chair.

"I'm sorry, doc. I feel like the world's biggest schlump!"

He was referring to the fact that he had gone wheat-free for two months--eliminated all breads, bagels, donuts, pasta, breakfast cereals, crackers, pretzels--and promptly lost 30 lbs. He felt great, discovered new levels of energy he thought he'd lost long ago.

Then some friends convinced him to have some cheeseburgers at a fast food restaurant.

"After that, it was downhill. I couldn't get enough. My wife made chile and I had to have four slices of bread with it. Then I'd have two more. I just couldn't stop."

Now, having regained the 30 lbs in the space of another two months, Greg was expressing his disgust.

And it's not the first time. Greg has struggled with his wheat-alholism for as long as I've known him. I've tried motivating him by showing him the flagrant lipoprotein patterns that his wheat habit and excess weight caused: markedly elevated LDL particle number, severe small LDL, low HDL, high triglycerides, high C-reactive protein, high blood sugar, high blood pressure. Greg has received a total of 7 stents over the past 5 years. His next stop is the operating room for a bypass if he can't bring his patterns and impulses under control.

But for some reason, Greg seems to always return to the wheat trough, gorging on breads, pretzels, cake, often in great quantities.

I'm not entirely sure what to do with someone with Greg's severe degree of wheat-aholism. I view wheat-aholism as similar to alcoholism. For some, it can be as addictive.

The only strategy that I know can work is to make a clean break and drop wheat products altogether. Just as an alcoholic cannot just satisfy him/herself with a drink or two a day, so a wheataholic can't be satified with just a couple of wheat crackers. It inevitably leads to the avalanche of wheat indulgences.

Perhaps we should form a new group: Wheataholics Anonymous. "Hi. My name is Greg and I'm a wheataholic."

The battle for asymptomatic disease

31. October 2007 William Davis (10)

The heart disease revenue pie is shrinking. So is the "serving size" being shared by competing hospitals.

In other words, as more hospitals open heart programs, there is more competition for the same heart patient. Throw into the mix the drop in "acute" presentations of disease, probably due to the now widespread prescribing of statin drugs. When I first started cardiology practice 15 years ago, for instance, days and nights spent taking care of heart attacks coming through the emergency room was a common event. It still happens, but far less frequently. (I don't mean to suggest that the actual prevalence of coronary heart disease has decreased, just the acute, catastrophic version of it.)

Throw into this mix the results of the COURAGE Trial that has put a damper on the value of stents and angioplasty vs. "optimal" medical therapy in people with stable anginal symptoms, since there was little advantage of procedures. Though it has not stopped the practice, it has reduced the enthusiasm for procedures. Though data are hard to come by, I've heard talk of 10% or greater drops in total procedural volume over the past year.

It's not uncommon for hospitals to have overbuilt heart facilities in anticipation of continued growth of this--until recently--growth industry called heart disease. However, factors are converging that may provide a new profit opportunity for hospitals.

One such opportunity is CT coronary angiography. The usual scenario: Man or woman without symptoms is persuaded somehow--an ad, primary care physician, next door neighbor with a scary event, Dr. Mehmet Oz gushing about this sexy new technology on yet another Oprah episode--to undergo a CT coronary angiogram. A "severe" blockage is found, despite the lack of symptoms, and voila! A stent patient or bypass patient is created out of nothing! Do this repeatedly and systematically, and a hospital can regain its former high-procedural volume glory.

Heart scans, though I believe deeply in them and they are the basis for the Track Your Plaque prevention and reversal program, can also be used and abused this way. Asymptomatic person has a score 150. Concerned, they go to their physician who orders a nuclear stress test. An "inferior perfusion defect" is seen, presumably representing poor flow through the right coronary artery (but often just means that the diaphragm overlaps the heart muscle and yields this apparition, a "false positive" or misleading result). "But--wink--we've got to find out if there's a severe blockage, don't we? You don't want to end up in an early grave!"

Thus, the battle for new patients with asymptomatic disease is getting underway in earnest. The scramble for cardiologists to learn how to use CT coronary angiograms is proceeding at breakneck speed, with new training courses being offered nationwide several times and places every month. CT coronary angiography is a useful test, but it is also subject to enormous abuse. It also provides the ticket for the unscrupulous physician and the revenue-hungry hospital eager to expand its patient volume.

Many people believe that this cannot happen commonly in 2007, given scrutiny of practices, litigiousness, and the expectation of a moral sense in medicine. However, I've witnessed such incidents several times this month alone. If you need graphic proof of just how far this can go before action is taken, read Coronary, Stephen Klaidman's chilling tale of a cardiologist and cardiothoracic surgeon in small-town northern California who built an enormous heart center based on fabricated heart disease diagnoses. You'll also find their story in Shannon Brownlee's recently released Overtreated: Why Too Much Medicine Is Making Us Sicker and Poorer.

Of course, the Track Your Plaque program is meant principally for people without symptoms, also. But we are advocating that asymptomatic disease is a reason for prevention, not procedures. There's a difference.

By the way, the two practitioners who engineered the escapade detailed in these books, cardiologist Chae Hyun Moon and cardiac surgeon Fidel Realyvasquez, walked away with a monetary fine and suspension of their California medical licenses. It is likely that many people died because of their abusive practices, but the state struggled to make a sufficiently persuasive case for reasons that I still don't understand.

Add Boston Globe to the list of heart scan blunders

17. September 2008 William Davis (15)

Yet another piece of mass media misinformation hit the airwaves today. This time it's not from the New York Times or the LA Times, both of which have previously mangled the issues surrounding heart scans. This time it's from the Boston Globe.

In an article titled What is a calcium scan for heart disease, and who should undergo the test?, the report states:

". . . calcium scans may not be a good idea, or prove terribly useful, for most people. For one thing, the scans expose a patient to significant radiation - equivalent to roughly 50 chest X-rays" said Dr. Warren Manning, chief of noninvasive cardiac imaging at Beth Israel Deaconess Medical Center."

As many before him, Dr. Manning is confusing two tests: CT coronary angiography and CT heart scanning. Perhaps we can't blame him: This technology has had its weakest following in the northeast, for reasons not entirely clear to me. (In fact, Track Your Plaque followers have had the greatest struggle obtaining heart scans in that part of the country.) Nonetheless, you'd think he'd have his simple facts straight before talking to the press. Unfortunately, hospital public relations departments will usually just grab whoever they can willing to talk to the press--regardless of their expertise or lack of.

The story goes on to say:

. . ." it's not clear what to do with the results from a calcium scan. If you have diabetes, high cholesterol, high blood pressure, or a family history of heart disease, you already know - or should know - that you are at increased risk of heart problems and should lower these risk factors. So, a calcium scan provides little additional information," Manning said.

"Moreover, even a high score doesn't necessarily mean that the calcified plaque in your arteries is obstructing blood flow, said Dr. Adolph Hutter, a cardiologist at Massachusetts General Hospital."

"The vast majority of people with high calcium tests don't have obstructions and they do fine long-term. So you'd have to test lots and lots of people to prevent one heart attack or sudden death," said Manning.

And if you get a low calcium score, a sign of little or no calcification of plaques, that's not very useful, either, because it could be wrong, or it could be right but lull you into believing you do not have to exercise and watch your diet, cholesterol, and blood pressure levels. "You can still be at risk even if your calcium test is negative," Hutter said.

It is truly shocking how little many (not all, thank goodness) of my colleagues really know about 1) heart scans, 2) coronary disease prevention, and 3) prevention in general. These same "experts" likely advocate high-dose statin drugs and low-fat diets for people at risk. They likely refer patients to the American Heart Association for diet advice and themselves obtain a lot of information from the pharmaceutical industry. The notion of identification, tracking, and purposeful reversal of coronary plaque is entirely foreign to this bunch.

"The vast majority of people with high calcium tests don't have obstructions and they do fine long-term. So you'd have to test lots and lots of people to prevent one heart attack or sudden death." Well, take a look at a graph from a database of 25,000 people undergoing heart scans then observed for several years afterwards:

You can see quite clearly from the curves that heart scan scores very clearly predict your future (if no preventive action is taken). The higher the score, the greater the likelihood of heart attack and death. How much clearer can it get?

The most recent addition to this literature is the PREDICT study which concluded:

Hazard ratios relative to CACS [coronary artery calcium scores] in the range 0-10 Agatston units (AU) were: CACS 11-100 AU, 5.4 (P = 0.02); 101-400 AU 10.5 (P = 0.001); 401-1000 AU, 11.9 (P = 0.001), and >1000 AU, 19.8 (P < 0.001).

In other words, a heart scan score of >1000 is associated with a 20-fold increased risk of cardiovascular events (without preventive efforts). That kind of predictive power and quantitative confidence simply cannot be squeezed out of blood pressure and cholesterol values.

How about the 2008 University of California-Irvine study from the New England Journal of Medicine (do the northeast docs even pay attention to something that is published in their own neighborhood?) that reported:

There were 162 coronary events, of which 89 were major events (myocardial infarction or death from coronary heart disease). In comparison with participants with no coronary calcium, the adjusted risk of a coronary event was increased by a factor of 7.73 among participants with coronary calcium scores between 101 and 300 and by a factor of 9.67 among participants with scores above 300 (P<0.001 for both comparisons). Among the four racial and ethnic groups, a doubling of the calcium score increased the risk of a major coronary event by 15 to 35% and the risk of any coronary event by 18 to 39%.

How about the Prospective Army Coronary Calcium (PACC) project (men average age 43 years):

"In these men, coronary calcium was associated with an 11.8-fold increased risk for incident coronary heart disease (CHD) (p = 0.002) in a Cox model controlling for the Framingham risk score. Among those with coronary artery calcification, the risk of coronary events increased incrementally across tertiles of coronary calcium severity (hazard ratio 4.3 per tertile)."

Calcium score provided additional information even after factoring in the Framingham risk score.

That's just a sample of the studies. There are a number more.

Add to these conversations the fact that, unlike reducing blood pressure or LDL cholesterol, the heart scan score is a quantification of the disease itself. It can also be tracked over time to gauge the success or failure of prevention efforts. To believe that blood pressure reduction or LDL cholesterol reduction is sufficient to eliminate risk is something only a fool would believe.

Contary to the above statements, the data are clear:

--The higher the heart scan score, the greater the risk. This has been demonstrated beyond any shadow of a doubt in at least a dozen published studies. In fact, heart scan scores outshine lipid/cholesterol values several-fold.

--A person with a zero score has a nearly zero risk for cardiovascular events over a 5-year timeline.

--Heart scans are the only quantitative test available of coronary atherosclerotic plaque. This means that they can be repeated to gauge progression or regression. Cholesterol does not do that. Stress tests do not do that.

--Heart scans are not the same as CT coronary angiography.

--The lack of "need" for a procedure does not equate to the absence of disease.

The power of heart scans is that they can uncover evidence for coronary atherosclerotic plaque 10 years before a cardiac disaster strikes. Witness Tim Russert's heart scan score of 210 in 1998 at age 48. 10 years later, you know what happened.

Beware the camipaign of misinformation and ignorance that continues that is hell-bent on maintaining the procedural status quo or locking us into a "drugs for all" mentality.

What's worse than sugar?

16. September 2008 William Davis (11)

There are a number of ways to view the blood sugar-raising or insulin-provoking effect of foods.

One way is glycemic index (GI), simply a measure of how high blood sugar is raised by a standard quantity of a food compared to table sugar. Another is glycemic load (GL), a combination (multiplied) of glycemic index and carbohydrate content per serving.

Table sugar has a GI of 65, a GL of 65.

Obviously, table sugar is not good for you. The content of white table sugar in the American diet has exploded over the last 100 years, totaling over 150 lb per year for the average person. (Humans are not meant to consume any.)

What is the GI of Rice Krispies cereal, organic or not? GI = 82-- higher than table sugar. GL is 72, also higher than table sugar.

How about Corn Flakes? GI 81, GL 70--also both higher than sugar.

How about those rice cakes that many dieters will use to quell hunger? GI 78, GL 64.

How about Shredded Wheat cereal? GI 75, GL 62.

All of the above foods with GI's and GL's that match or exceed that of table sugar are made of wheat and cornstarch. Some, like Shredded Wheat cereal and rice cakes, don't even have any added sugar.

Stay clear of these foods if you have low HDL, high triglycerides, high blood sugar, or small LDL. Or, for that matter, if you are human.

Keep the eloquent words of New York University nutritionist, Marion Nestle, author of the book, Food Politics, in mind:

“Food companies—just like companies that sell cigarettes, pharmaceuticals, or any other commodity—routinely place the needs of stock holders over considerations of public health. Food companies will make and market any product that sells, regardless of its nutritional value or its effect on health. In this regard, food companies hardly differ from cigarette companies. They lobby Congress to eliminate regulations perceived as unfavorable; they press federal regulatory agencies not to enforce such regulations; and when they don’t like regulatory decisions, they file lawsuits. Like cigarette companies, food companies co-opt food and nutrition experts by supporting professional organizations and research, and they expand sales by marketing directly to children, members of minority groups, and people in develop countries—whether or not the products are likely to improve people’s diets.” ??

Are sterols the new trans fat?

13. September 2008 William Davis (16)

By now, I'm sure you're well-acquainted with the hydrogenated, trans fat issue.

Hydrogenation of polyunsaturated oils was a popular practice (and still is) since the 1960s, as food manufacturers sought a substitute for saturated fat. Bubbling high-pressure hydrogen through oils like cottonseed, soybean, and corn generates trans fatty acids. These man-made fatty acids, while safe in initial safety testing, proved to be among the biggest nutritional mistakes of the 20th century.

Trans fatty acids have been associated with increased LDL cholesterol, reduction in HDL, oxidative reactions, abnormal rigidity when incorporated into cell membranes, and cancer. Trans fats still dominate many processed foods like chips, cookies, non-dairy creamers, food mixes, and thousands of others. They're also found prominently in fast foods.

Fast forward to today, and most Americans have become aware of the dangers of trans fats and many try to avoid them.

But I worry there is yet another substance that has worked its way into the American processed food cornucopia that has some potential for repeating the trans fat debacle: sterol esters.

Sterols are naturally-occurring oils found in vegetables, nuts, and numerous other foods in small quantities. Most of us take in 200-400 milligrams per day just by eating plant-sourced foods.

Curiously, the chemical structure of sterols are very similar to human cholesterol (differing at one carbon atom). Sterols, by not fully understood means, block the intestinal absorption of cholesterol. Thus, sterol esters, as well as the similar stanol esters, have been used to reduce blood levels of total and LDL cholesterol.

So far, so good.

The initial commercial products, released in the late 1990s, were Take Control (sterol) and Benecol (stanol), both of which were marketed to reduce cholesterol when 2-3 tbsp are used daily, providing 3400 – 5100 mg of sterol or stanol esters, about 10- to 20-fold more than we normally obtain from foods. Several clinical trials have conclusively confirmed that these products reduce cholesterol levels.

They do indeed perform as advertised. Add either product to your daily diet and LDL cholesterol is reduced by about 10-15%. In fact, in the original Track Your Plaque book, these products were advocated as a supplemental means of reducing LDL when other methods fell short.

In 2008, there are now hundreds of products that have additional quantities of sterol esters in them, such as orange juice, mayonnaise, yogurt, breakfast cereals, even nutritional supplements. Most of these products proudly bear claims like "heart healthy." Stanol esters have not enjoyed the same widespread application. (I believe there may be patent issues or other considerations. However, it's the sterols that are the principal topic here, not stanols.)

Now, here's where it gets a bit tricky. There is a rare (1 per million) disease called sitosterolemia, a genetic disorder that permits the afflicted to absorb more than the usual quantity of sterols from the intestine. While you and I obtain some amount of sterols from plant-based foods, absorption is poor, and we absorb <10% of sterols ingested. However, people with sitosterolemia absorb sterols far more efficiently, resulting in high blood levels of sterols that result in coronary disease and aortic valve disease, with heart attacks occurring as young as late teens or 20s. Treatment to block sterol absorption are used to treat these people.

There are also a larger number, though still uncommon (1/500) of people who have only one of the two genes that young people with sitosterolemia have. These people may have an intermediate capacity for sterol absorption.

Okay, so what does this have to do with you? Well, if you and I now take in 10-20 times greater amounts of sterol esters, do our blood levels of sterols increase?

Several studies now suggest that, yes, sterol blood levels increase with sterol ingestion. One study from Finland, the STRIP Study, showed that children who had double usual sterol intake increased blood levels by around 50%.

Similarly, a Johns Hopkins study in adults with only one of the genes ("heterozygotes") for sitosterolemia increased sterol blood levels by between 54-116% by ingesting 2200 mg of sterols added per day, despite reduction of LDL cholesterol levels.

Even people with neither gene for sitosterol hyperabsorption can increase their blood levels of sterols. But the crucial question: Do the blood levels of sterols that occur in unaffected people or in heterozygotes increase the risk of coronary heart disease? The answer is not known.

Despite the several clinical trials performed with sterol esters, all of them have examined LDL and total cholesterol reduction as endpoints, not cardiovascular events. It is conceivable that, while sterol esters reduce cholesterol, risk for heart disease is increased due to higher blood levels of sterols.

The question is not settled. For now, it is just a suspicion. But that's enough for me to steer clear of processed foods supplemented with these uncertain sterol esters. My previous recommendations for sterol ester products will be removed with the next edition of Track Your Plaque. Until we have solid evidence that there are no adverse cardiovascular effects of sterol esters, in my view they should not be part of anyone's heart-disease prevention program.

(The same argument does not seem to apply to stanol esters, such as that contained in butter-substitute Benecol, since stanol esters are not absorbed at all and remain confined to the intestine.)

The Diabetes Gold Rush

11. September 2008 William Davis (9)

Lou came into the office. Clearly, his program had gone sour.

Lou had initially obtained wonderful control over his heart scan score of 1114, having reversed modestly in his first three years of effort through correction of his multiple causes (including low HDL, severe small LDL, Lp(a), and a diabetic tendency).

But Lou now came into the office red-faced and sporting a big bulging abdomen. Blood sugar? Now in the overtly diabetic range. Lou said that his primary care doctor had suggested that he start on three new medications (glucophage, injectable Byetta, and Actos) to control his blood sugar. His doctor also told him to increase his intake of fibers by eating more "healthy" breakfast cereals like Cheerios.

Lou had apparently done just that (added "healthy" fiber-rich foods) even before his doctor had suggested it. (Lou failed to remember the several conversations we'd had about healthy eating.) Unfortunately, Lou also failed to connect his increased intake of "healthy fiber-rich foods" and his growing abdominal girth (his "wheat belly").

Here's the dirty little secret: Much of the world wants you to be diabetic. It is the health gold rush of this century. "Go West, young man!"

To find out what I mean, you need only ask: Who profits when people become diabetic? That's easy:

The pharmaceutical industry--Diabetes is a booming growth industry, a source of tens of billions of dollars of revenue, poised for enormous growth as the population ages and gets fatter. It is common for a newly-diagnosed diabetic to be given new prescriptions for two or three drugs with a monthly cost of $300. Of course, the chronic nature of the disease make this far more profitable than, say, a two week course of antibiotics. Presently, 70 new drugs are under development.

Diabetes drug maker Novo Nordisk reported a 25% increase in revenues in 2007 from diabetic agents in the North American market, along with near $2 billion increase in profit for the year. Merck's recently-released DPP-4 inhibitor, Januvia, has already sold $668 million in 2007 and is growing rapidly.

The medical device and supply industry. Take a look at the Medtronic quarterly earnings report, detailing the breakdown of their record-setting quarterly revenue of $3.7 billion:

Diabetes revenue of $269 million grew 12 percent driven by sales
of consumables, the accessories required by insulin pump users, and
continuous glucose monitoring products. Revenue from international
sales grew 31 percent over the same quarter last year.

That's what I call a growth industry.

The processed food industry. The food industry is as big or bigger than the drug industry. ADM, Kraft, General Mills all have annual revenues in the $12-50 billion range. There are plenty of others.

When we're told, for instance, that Cheerios reduces cholesterol, we're not told that it skyrockets blood sugar or triggers small LDL. When we're sold whole wheat crackers, Cocoa Puffs (which the American Heart Asscociation says is heart-healthy), or granola bars, hunger is stimulated, impulse to eat more grows, blood sugar escalates, we get fat, we get diabetic. It's a simple formula.

So be aware that there is little incentive among corporate giants in the food, medical device, or drug industries to encourage behaviors that decrease the incidence of diabetes. In fact, there is enormous financial incentive to make sure that diabetes continues to grow at the startling rate it has over the last decade.

To be sure, the drug and medical device industry will also develop better tools to deal with diabetes and its complications. But the very best way to deal with diabetes is to not develop it in the first place.

What else is there?

7. September 2008 William Davis (11)

This question comes up frequently:

Aren't there any alternatives to heart scans performed on a CT or EBT device?

Yes, there are.

First of all, heart scans are performed best on an electron-beam CT device (EBT) or a 64-slice multi-detector CT (MDCT) device. (While they are also obtainable through less-than-64 slice CT devices (e.g., 16 slices and less), I would advise against it because of the excessive radiation exposure and poor accuracy.) CT heart scans are not to be confused with now more popular CT coronary angiograms, which are performed on the same devices but require intravenous x-ray dye and many times more radiation.(See CT scans and radiation exposure and Heart scan frustration.) Heart scans currently form the basis for the Track Your Plaque program, a program of tracking plaque in the hopes of stopping or reversing the otherwise inevitable 30% per year increase.

Let's confine our discussion to people without symptoms, meaning people like you and me sitting at home, not in an emergency room having chest pain or other similar acute symptomatic presentation.

Among the other ways to uncover hidden coronary plaque:

--Heart catheterization--to yield a coronary angiogram. Yes, this does tell us whether coronary plaque is present. However, it is invasive, expensive, and crude. (I've performed 5000 over my career; they are crude, though useful, tools in acute settings like unstable symptoms or heart attack, a different situation.) Coronary angiography is also non-quantitative. While they provide a value like "40% blockage mid-way in right coronary" or "90% blockage in left anterior descending" they do not provide a trackable lengthwise index of total plaque volume. Identifying severe blockages in people with symptoms leads to stents, bypass surgery and the like, but it is not practical nor of long-term usefulness in apparently, healthy people without symptoms.

--Carotid ultrasound--Here's is where a lot of confusion comes from. Standard carotid ultrasound (U/S) performed in virtually every hospital and many clinics will yield crude qualitative results, e.g., "16-49% stenosis (blockage) in right internal carotid artery". The crude value range is because much of carotid U/S is based on flow velocities, not just direct visualization of the plaque itself ("2-D imaging). However, if carotid stenosis of any degree is identified, the likelihood of silent coronary plaque is much greater.

Limitations: The qualitative, non-quantitative nature of carotid U/S make it difficult to follow long-term in a precise way. Also, this is carotid plaque, not coronary plaque. It makes it very difficult to follow carotid plaque as an indirect means of tracking coronary plaque. The two arterial territories, carotid and coronary, do not track together: there are divergences in many people, with carotid plaque absent in some people with advanced coronary plaque, carotid plaque more susceptible to different risk factors than coronary. So carotid U/S is helpful for its own purposes, but not terribly helpful for coronary tracking.

How about carotid intimal-medial thickness (CIMT) obtained also with carotid U/S? CIMT is a useful index of bodywide atherosclerosis. CIMT is simply a measure not of plaque (and is measured in regions of the carotid artery away from plaque), but of the thickness of the lining of the carotid arteries. Everybody has a measurable CIMT, but it thickens as atherosclerosis grows. CIMT is a radiation-free test that takes several minutes.

Limitations: Hardly anybody does it outside of research protocols. I know of no hospital or clinic in my area that performs CIMT, though it is slowly being adopted in some centers. It is also difficult to rely on repeated tests, because there is substantial variation when one technologist or another performs it. CIMT is also a flawed index of coronary plaque. When CIMT is compared to heart scan scores, CT coronary angiography, or conventional coronary angiography, CIMT correlates about 60-70% with the degree of coronary atherosclerosis.

CIMT is therefore a useful test for research, but a distant 2nd choice--if you can obtain it.

--Ankle-brachial index (ABI)--ABI is a crude measure, simply a comparison of the blood pressure (obtained with a blood pressure cuff) in the legs divided by blood pressure in the arms. The ratio is called ABI. Any ABI <1.0, meaning less pressure in the legs compared to the arms, is indirectly indicative of advanced coronary disease. ABI is, in fact, a very powerful predictor of cardiovascular events. If ABI is <1.0, your future risk for heart attack is very high, even in the absence of symptoms.

Limitations: The vast majority of people with heart disease, even those having undergone stents or bypass surgery, have normal ABI's. Virtually all people with high heart scan scores have normal ABI's. In other words, ABI is a measure of very advanced atherosclerosis only.

--Stress tests--I lump all stress tests together in their various forms, e.g., stress thallium, stress Cardiolite, stress Myoview, persantine/adenosine Cardiolite, dobutamine echocardiography, etc. Stress tests are tests of coronary blood flow, not of plaque. Stress tests are useful in people with symptoms, like chest pain or breathlessness, since stress tests are provocative tests that can help determine whether reduced coronary blood flow is the cause behind a symptom, or whether hiatal hernia, esophagitis, gallstones, pleurisy, musculoskeletal causes, or some other process is behind symptoms.

Limitations: Stress test are virtually useless in people without symptoms. This is why people like Tim Russert and Bill Clinton, both without symptoms, underwent several (Russert 3, Clinton 5) nuclear stress tests---all normal. You know what happened to them. Stress tests do not reliably uncover hidden coronary plaque in people without symptoms. Stress tests are, like coronary angiograms, non-quantitative. They are normal or abnormal.

Outside of experimental settings, that's it.

You can probably see why I advocate CT heart scans for tracking plaque. I do not advocate heart scans because I sell them (I don't), because scan centers pay me to say these things (they don't, and in fact my relationship with my usual heart scan centers has become deeply contentious, though I still endorse the technology). I say that heart scans are superior because they are, in 2008, the only way to 1) identify and 2) track coronary plaque that is easy, safe, low-radiation, and reasonably priced (<$200 in Milwaukee at 5 centers).

The need for a technology that allows tracking of plaque, not just initial identification, is also an important distinction. People who've had some measure of atherosclerosis all catch on to this eventually. "Can I reverse it?" is an inevitable question once the disease is identified in some way. So a tool for tracking over time to gauge the success or failure of a program of prevention can be assessed.

Perhaps in 10 years, another technology will emerge as the preferred means to do the same, but better. If that proves true, we will convert to that technology. But today heart scans performed on CT heart scans are the only rational way to both detect, then track, coronary atherosclerotic plaque.

Let's gamble with your health

5. September 2008 William Davis (4)

Let's play a game.

I'm going to list some lipid patterns and you tell me whether or not the person with these values has heart disease.

Patient 1

Total cholesterol 150 mg/dl
LDL cholesterol 75 mg/dl
HDL 50 mg/dl
Triglycerides 125 mg/dl

Patient 2

Total cholesterol 300 mg/dl
LDL cholesterol 200 mg/dl
HDL cholesterol 35 mg/dl
Triglycerides 325

Patient 3

Total cholesterol 300 mg/dl
LDL cholesterol 100 mg/dl
HDL cholesterol 25 mg/dl
Triglycerides 875 mg/dl

Let's say that any one of these profiles is yours. Should you be getting your affairs in order, preparing for your cardiac catastrophe? Should you demand a stress test from your doctor, hoping that it will shed some light on your dilemma? Should you go ahead and go to the all-you-can-eat rib restaurant, content that you will be attending your granddaughger's wedding in 2020 in full health?

If you can tell, you're a lot better at this than I am.

I provide consultation to other physicians and patients on complex hyperlipidemias in my area. In other words, if someone has a difficulty to manage lipid disorder, the doctor sends the patient to me.

Managing these wildly variable values is the easy part. Deciding whether or not heart disease is concealed within the patient . . . well, that's the hard part.

Let's take it a step further: Suppose all three profiles also have 50% of all LDL particles as the abnormal small particles. And they all have a lipoprotein(a) level of 50 mg/dl, an abnormally high level.

How about now: Can you tell whether any or all of these people have hidden heart disease?

What if they are 20 years old? Does that make a difference?

What if they are all females over 65 years--how about now?

If the only tool you have to divine the presence of hidden heart disease is a lipid panel, or even a lipoprotein panel, then the best you can manage is to hazard a guess based on statistical probability. You also assume that this "snapshot" represents the sorts of values someone has had for their entire lives. You cannot factor in the fact that the first person gained 60 lbs in the last three years since completing menopause. You can't factor in that patient 2 smoked two packs of cigarettes a day for 25 years, but quit 10 years ago.

It's also foolhardy to believe that every known cause of heart disease is currently identifiable and revealed by modern-day blood testing.

A heart scan is simply a means to quantify the sum-total of risk factors--causes--that have exerted an effect up until the moment of your scan. It will reveal the quantity of coronary atherosclerotic plaque present, regardless of whether you stopped smoking 20 years ago or lost 30 lbs last year.

For these reasons, nothing can replace the value of quantifying plaque: not cholesterol, not the Framingham risk calculation, not measures of small LDL or lipoprotein(a), not the presence or absence of symptoms. In 2008, the method of choice for measuring plaque remains a CT heart scan. Perhaps in 10 years it will be some other method.

As always, let me remind Heart Scan Blog viewers that I make this point NOT to sell heart scans, which I have no reason whatsoever to do. I say this because we require a tool to track this potentially fatal disease. We require a yardstick for tracking progression or regression. The only tool that suits these purposes in 2008 is a CT heart scan.

Who knows what

4. September 2008 William Davis (4)

You know that cynical old saying:

It’s not what you know, it’s who you know.

In other words, knowing the right person provides you strategic advantage in business, social advancement, etc.

In health, it was often true. Knowing who the better doctors were, for instance, in your city might provide you with access to better care.

Enter the Information Age. You now have access to medical information equal to that of your doctor. You now have access to patient discussions about doctors, their practices, their performance records. There is now a depth and breadth of information on health that was never available before.

I’d therefore turn the old saying into the new Health 2.0 version:

It’s not who you know, it’s what you know.

In health, information now reigns supreme, not knowing somebody else who has the right connections.

Positive: Everybody now theoretically has access to an equal amount of information, since you can access information on any topic just as easily as I can.

Negative: It puts more of the burden on you. If you screw up in health, perhaps you didn’t try to get the best information hard enough.

I love this new development, this emergence of empowerment in health. I call it self-directed health, the individual capacity to exert enormous influence over the quality of your healthcare.

This is obviously a work in progress. All the answers and tools for self-directed care, self-empowerment are not yet available, some haven’t even yet been imagined.

But they are coming.

“Too many false positives”

4. September 2008 William Davis (6)

“Do you really think I need a heart scan?” asked Terry.

“My doctor said that heart scans show too many false positives. He says that many people end up getting unnecessary heart catheterizations because of them.”

At age 56, Terry was becoming increasingly frightened. His father had suffered his first heart attack at age 53, Terry’s paternal uncle had a heart attack at age 56, his paternal grandfather a heart attack at age 50.

Is this true? Do heart scans yield too many false positives, meaning abnormal results when there really is no abnormality?

No, it is not. What Terry’s doctor is referring to is the fact that, in the decades-long process that leads to heart attack, heart scans have the ability to detect early phases of developing coronary atherosclerotic plaque.

Let’s take Terry’s case, for example. Given his family history, it is quite likely that he does indeed have coronary atherosclerotic plaque. Will it be detectable by performing a stress test? Probably not. In fact, Terry jogs and feels well while doing so. While a stress test abnormality that fails to reach conscious perception is possible, it’s fairly unlikely given his exercise routine.

Will Terry’s coronary atherosclerotic plaque be detectable by heart catheterization? Very likely. But why perform an invasive hospital procedure just as a screening test? Should a woman wishing to undergo a screening test for breast cancer undergo breast removal? Of course not.

Is waiting for symptoms a rational way to approach diagnosis of heart disease? Well, when symptoms appear, it means that coronary blood flow is reduced. Stents and bypass surgery may be indicated. The risk of heart attack and death skyrocket. Sudden death becomes a real possibility.

In the 30 or so years required to establish sufficient coronary plaque to permit the appearance of symptoms or the development of an abnormality detectable by stress testing, there were many years when the disease was early--too early to generate symptoms, too early to be detectable by stress testing.

That’s when heart scans uncover evidence for silent coronary atherosclerotic plaque.

Should we call this a “false positive” just because it doesn’t also correlate with “need” for a catheterization, stent, bypass operation or result in heart attack within the next few weeks?

The detection of early plaque is just that: early disease detection.

Imagine, for instance, that the breast cancer that will grow into a palpable nodule or mass detectable by mammogram is detectable by a special breast scan 15 years before it becomes a full-blown tumor, metastasizing to other organs. What if effective means to halt that earliest evidence of cancer could put a stop to this devastating disease decades ahead of danger? Is this a “false positive” too?

In my view, this is the knuckleheaded thinking of the conventional practitioner: “Don’t bother me until you’re really sick.” Prevention is a practice that has become fashionable only because of the push of the drug industry. Nutrition is an afterthought, a message conceived through consensus of “experts” with suspect motivations and allegiances.

So, no, heart scans do not uncover “false positives.” They uncover early disease--true positives--years before it is detectable by standard tests or by the appearance of catastrophe. But that is the whole point: Early detection means getting a head start on prevention.

Do heart scans lead to unnecessary heart catheterizations? Yes, sadly they do. But not because heart scans are false positive. It happens because of unscrupulous or ignorant cardiologists who use the information wrongly. In my view, heart scans should NEVER lead directly to heart catheterization in an asymptomatic patient. Heart scans, as helpful as they are, do not modify the standard reasons for performing heart procedures.

If a car mechanic is dishonest and fixes a carburetor that didn't need fixing, should we condemn all car mechanics? No, of course not. We only need to develop the means to weed out the bad apples. The same applies to heart scans.

Triglycerides divided by five

3. September 2008 William Davis (8)

Here's a bit of lipid tedium that might nonetheless help you one day decipher the meaning of shifts in your cholesterol panel.

Recall from prior discussions that conventional LDL cholesterol is a calculated value. Contrary to popular opinion, LDL is usually not measured, but calculated from the Friedewald equation:

LDL cholesterol = Total cholesterol - HDL cholesterol - triglycerides/5

For the sake of simplicity, let's call total cholesterol TC; HDL cholesterol HDL, and triglycerides TG.

We've also talked in past how a low HDL makes calculated LDL inaccurate, sometimes wildly so. (See Low HDL makes Dr. Friedewald a liar.)

Here's yet another source of inaccuracy of the Friedewald-calculated LDL: any increase in triglycerides.

Let's say, for instance, that starting lipid panel shows:

TC 170 mg/dl
LDL 100 mg/dl
HDL 50 mg/dl
TG 100 mg/dl

You're advised to follow a standard low-fat, whole grain-rich diet advocated by "official" agencies (the diet I bash as knuckleheaded). Another panel a few months later shows:

TC 230 mg/dl
LDL 140 mg/dl
HDL 50 mg/dl
TG 200 mg/dl

(Obviously, I've oversimplified the response for the sake of argument. HDL would likely go down, LDL would change more depending on body weight, small LDL tendencies, and other factors. You'd also likely get fat.)

Now your doctor declares that your LDL has gone up and you "need" a statin agent.

Nonsense, absolute nonsense.

What has really happened is that the increased dietary intake of wheat and other "healthy whole-grain foods" has caused triglycerides to skyrocket. LDL increases, in turn, by a factor of TG/5, or 40 mg/dl. Thus, LDL has been inflated by the triglyceride-raising effect of whole grains.

This is yet another reason why the standard lipid panel, full of hazards and landmines, needs to be abandoned. But calculated LDL in particular is an exercise in frustration.

Though the example used is hypothetical, I've witnessed this effect thousands of times. I've also seen many people placed on statin drugs unnecessarily, due to the appearance of a high LDL cholesterol that really represented increased TG/5, usually induced by an excessive carbohydrate intake, including those commonly misrepresented as healthy such as whole grains.

Who reads The Heart Scan Blog?

2. September 2008 William Davis (0)

In the Heart Scan Blog, I am often guilty of speaking out loud of my varied thoughts on this crazy thing that we've created called the cardiovascular healthcare machine. But I discuss it in the context of asking "How could this be done better--better outcomes, more patient-friendly, more accessible . . . more do-it-yourself?

The last part is the part that throws most people. Do-it-yourself? My colleagues would claim I'm nuts, suggesting that coronary heart disease is something manageable by yourself. In the conventional pathway, after all, coronary disease is that unpredictable, poorly detected by standard tests, condition that then leads to heart catheterization, stents, bypass , and the like.

Several factors distinguish the readers of The Heart Scan Blog that surprised me:

--Nearly 60% are women
--There are a disproportionate number of Asian people. (Can someone explain this to me?)
--A great number have graduate degrees

I believe this tells me that The Heart Scan Blog appeals to a somewhat more sophisticated audience. This, to some degree, warms my heart, since it means that I've captured the attention of some people who may be more discriminating and thoughtful in their Internet surfing.

However, I also lament the fact that these conversations are not achieving the mainstream. After all,