Is there something fishy about fish oil?

27. January 2010 William Davis (0)
To be sure, there's plenty of misinformation out there about fish oil. Take a look at the swill that passes for health information on Woman's Day: On Call with Dr. Sandy: Fish Oil and Mercury:



Reader Question: My doctor recommended that I take a fish oil supplement, but I'm concerned about mercury. Is there any way to tell which brands are lowest in mercury content?



On Call Response: When it comes to OTC supplements, the answer is no. Though most fish oil supplements sold by major brands are probably safe, there's really no way to tell what's in the bottle or how much mercury it might contain.



Perhaps Dr. Sandy should read the many independent analyses performed on nutritional supplement fish oil, including those at Consumer Lab and Consumer Report before she offers her blind criticisms.

Lovaza vs fish oil supplements?

27. January 2010 William Davis (55)
Lovaza is the FDA-approved form of fish oil that is available only by prescription. It contains 842 mg of the omega-3 fatty acids, EPA and DHA, per capsule.

The FDA application for Lovaza is viewable here on the FDA website. Interestingly, while there is plenty of the usual regulatory gobbledy-gook about toxicology, dose escalation, and efficacy in the extensive documentation, there is little said about the issue of contamination.

In other words, critics of nutritional supplement fish oil harp on the possibility of contamination with mercury and pesticide residues, like dioxin and PCBs (polychlorinated biphenyls). Yet there is virtually nothing about these same issues in the FDA application for Lovaza.

Let's take a look at a sample over-the-counter fish oil product. Our friends at PharmaNutrients (a new Track Your Plaque partner for nutritional supplements) have a fish oil product called PharmaNutrients" Cardio. Here's an independent analysis of the Cardio product (per 1000 mg fish oil capsule):

EPA content: 566.1 mg
DHA content: 216.6 mg
(Total EPA + DHA 782.7 mg)

Cardio passed all tests for peroxides, PCBs, dioxin, furans, dioxin-like PCBs, and heavy metals (arsenic, cadmium, lead, mercury) using criteria at least 60% more stringent than European Commission (EC) standards (EC standard <2 picograms/gm for dioxins and furans, PharmaNutrients <1 picograms/gm; EC standard <10 picograms/gm for dioxin-like PCBs, PharmaNutrients <3 picograms/gm). PCBs levels in particular are less than 0.009 ppm, 90% below the industry-wide purity standard of 0.09 ppm. Likewise, mercury is >90% lower than European Commission standards.

In other words, this over-the-counter "pharmaceutical grade" fish oil has virtually nothing but omega-3 fatty acids.

Interestingly, the PharmaNutrients fish oil capsule also contains the third omega-3 fatty acid, docosapentaenoic acid (DPA), a neglected form that some authorities have proposed has superior cardiovascular protective properties over eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). If DPA is included in the analysis, PharmaNutrient's Cardio contains a total of 900 mg omega-3 fatty acids per capsule.

At some point, I'd like to see a head-to-head comparison not just on purity grounds, since I am convinced that high-quality products like Cardio can match or exceed the purity of prescription fish oil, but on efficacy in raising omega-3 blood levels, the omega-3 index. (The omega-3 index is a predictor of heart attack and sudden cardiac death--the higher, the better.) My prediction: High-quality fish oil supplements will match or exceed prescription fish oil.

More on blood sugar

25. January 2010 William Davis (36)
Take any of the following foods:

One chicken breast
Quarter-pound ground beef
6 oz salmon steak
½ cup raw almonds
3 eggs scrambled in olive oil

How much is blood sugar increased by any item in the above list?

If you said virtually zero, you’re correct. Eat any of these foods, regardless of portion size, and blood sugar won’t change substantially. If you started with a blood sugar of, say, 90 mg/dl, 1-2 hours later it would be 90 mg/dl. It might go up or even down a few milligrams, but for all practical purposes it remains substantially unchanged.

How much is blood sugar increased by the foods in this list:

2 slices multigrain bread
1 whole wheat bagel
4 oz high-fiber breakfast cereal
2 whole grain pancakes, 2 oz maple syrup

The foods in this list are a different story from the first. Depending on your body weight, exercise habits, and other factors, a typical blood sugar response in an otherwise healthy non-diabetic person would be 120 mg/dl to 160 mg/dl. In someone with diabetes, it could easily exceed 200 mg/dl.

That isn’t good. Large blood sugar excursions to 140 mg/dl have been clearly associated with greater risk for heart attack, progression to diabetes, inflammatory responses, and other adverse health effects. In fact, blood sugars as low as 100 mg/dl after eating have been associated with increased cardiovascular risk.

Then why are the USDA, American Heart Association, the American Dietetic Association, and the American Diabetes Association telling us to eat more of the foods that shoot blood sugar up to such high levels? “Eat more healthy whole grains”?

To see how much the issue of exaggerated blood sugars after eating applies to you, a simple blood sugar check 1-2 hours after eating can show you. Either your doctor can have the test drawn or you can purchase your own inexpensive glucose meter (e.g., Walmart, Wagreens).

My prediction: You will be very surprised at blood sugar responses after common foods, including “healthy whole grains.” And, by the way, keeping blood sugar excursions to a minimum will facilitate weight loss.

Postprandial blood sugar: Almonds vs. whole wheat bread

22. January 2010 William Davis (0)
Here's my postprandial (after-eating) blood glucose demonstration.



I tested raw almonds vs. 100% whole wheat bread, matched for calories. (Full nutritional composition below.)



Blood sugars:

Raw almonds

Start:

One-hour after eating:





2 slices 100% whole wheat bread

Start:

One-hour after eating:





100% whole wheat bread, 2 large slices

Water (g) 24.69

Energy (kcal) 158

Protein (g) 8.29

Fat, total (g) 2.14

Carbohydrate (g) 26.43

Sugars, total (g) 3.56

Fiber, total dietary (g) 4.4

Cholesterol (mg) 0

Saturated fatty acids, total (g) 0.478

Monounsaturated fatty acids, total (g) 1.022

Polyunsaturated fatty acids, total (g) 0.384





23 almonds, raw



Energy (kcal) 159

Protein (g) 5.86

Fat, total (g) 13.64

Carbohydrate (g) 5.98

Sugars, total (g) 1.07

Fiber, total dietary (g) 3.4

Cholesterol (mg) 0

Saturated fatty acids, total (g) 1.03

Monounsaturated fatty acids, total (g) 8.525

Polyunsaturated fatty acids, total (g) 3.331



To get low-carb right, you need to check blood sugars

19. January 2010 William Davis (60)
Reducing your carbohydrate exposure, particularly to wheat, cornstarch, and sucrose (table sugar), helps with weight loss; reduction of triglycerides, small LDL, and c-reactive protein; increases HDL; reduces blood pressure. There should be no remaining doubt on these effects.

However, I am going to propose that you cannot truly get your low-carb diet right without checking blood sugars. Let me explain.

Carbohydrates are the dominant driver of blood sugar (glucose) after eating. But it's clear that we also obtain some wonderfully healthy nutrients from carbohydrate sources: Think anthocyanins from blueberries and pomegranates, vitamin C from citrus, and soluble fiber from beans. There are many good things in carbohydrate foods.

How do we weigh the need to reduce carbohydrates with their benefits?

Blood sugar after eating ("postprandial") is the best index of carbohydrate metabolism we have (not fasting blood sugar). It also provides an indirect gauge of small LDL. Checking your blood sugar (glucose) has become an easy and relatively inexpensive tool that just about anybody can incorporate into health habits. More often than not, it can also provide you with some unexpected insights about your response to diet.

If you’re not a diabetic, why bother checking blood sugar? New studies have documented the increased likelihood of cardiovascular events with increased postprandial blood sugars well below the ranges regarded as diabetic. A blood sugar level of 140 mg/dl after a meal carries 30-60% increased (relative) risk for heart attack and other events. The increase in risk begins at even lower levels, perhaps 110 mg/dl or lower after-eating.

We use a one-hour after eating blood sugar to gauge the effects of a meal. If, for instance, your dinner of baked chicken, asparagus brushed with olive oil, sauteed mushrooms, mashed potatoes, and a piece of Italian bread yields a one-hour blood sugar of 155 mg/dl, you know that something is wrong. (This is far more common than most people think.)

Doing this myself, I have been shocked at the times I've had an unexpectedly high blood sugar from seemingly "safe' foods, or when a store- or restaurant-bought meal had some concealed source of sugar or carbohydrate. (I recently had a restaurant meal of a turkey burger with cheese, mixed salad with balsamic vinegar dressing, along with a few bites of my wife's veggie omelet. Blood sugar one hour later: 127 mg/dl. I believe sugar added to the salad dressing was the culprit.)

You can now purchase your own blood glucose monitor at stores like Walmart and Walgreens for $10-20. You will also need to purchase the fingerstick lancets and test strips; the test strips are the most costly part of the picture, usually running $0.50 to $1.00 per test strip. But since people without diabetes check their blood sugar only occasionally, the cost of the test strips is, over time, modest. I've had several devices over the years, but my current favorite for ease-of-use is the LifeScan OneTouch UltraMini that cost me $18.99 at Walgreens.

Checking after-meal blood sugars is, in my view, a powerful means of managing diet when reducing carbohydrate exposure is your goal. It provides immediate feedback on the carbohydrate aspect of your diet, allowing you to adjust and tweak carbohydrate intake to your individual metabolism.

Food sources of vitamin K2: Reprint

19. January 2010 William Davis (59)
For some reason, my December, 2007, Heart Scan Blog post, Food sources of vitamin K2, has been receiving a lot of traffic.

I therefore reprint the vitamin K2 post below.




Vitamin K2 is emerging as an exciting player in the control and possible regression of coronary atherosclerotic plaque. Only about 10% of dietary vitamin K intake is in the K2 form, the other 90% being the more common K1.

The ideal source of K2 is natto, the unpalatable, gooey, slimy mass of fermented soybeans that Japanese eat and has been held responsible for substantial decreases in osteoporosis and bone fractures of aging. Natto has an ammonia-like bouquet, in addition to its phlegmy consistency that makes it virtually inedible to anyone but native Japanese.

I say that the conversation on vitamin K2 is emerging because of a number of uncertainties: What form of vitamin K2 is best (so-called MK-4 vs. MK7 vs. MK-9, all of which vary in structure and duration of action in human blood)? What dose is required for bone benefits vs. other benefits outside of bone health? Why would humans have developed a need for a nutrient that is created through fermentation with only small quantities in meats and other non-fermented foods?

Much of the developing research on vit K2 is coming from the laboratories of Drs. Vermeer, Geleijnse, and Schurgers at the University of Maastricht in the Netherlands, along with several laboratories in Japan, the champions of K2.

MK-7 and MK-8,9,10 come from bacterial fermentation, whether in natto, cheese, or in your intestinal tract; MK-4 is naturally synthesized by animals from vitamin K1. While natto is the richest source of the MK-7 form, egg yolks and fermented cheeses are the richest sources of the MK-4 form.

Chicken contains about 8 mcg MK-4 per 3 1/2 oz serving; beef contains about 1 mcg. Egg yolks contain 31 mcg MK-4 per 3 1/2 oz serving (app. 6 raw yolks). Hard cheeses contain about 5 mcg MK-4 per 3 1/2 oz serving, about 70 mcg of MK-8,9; soft cheeses contain about 30% less. Natto contains about 1000 mcg of MK-7, 84 mcg MK-8, and no MK-4 per 3 1/2 oz serving.















Feta cheese

Thanks to the research efforts of the Dutch and Japanese groups, several phenomena surrounding vitamin K2 are clear, even well-established fact:

--Vitamin K2 supplementation (via frequent natto consumption or pharmaceutical doses of K2) substantially improves bone health. While K2 by itself exerts significant bone density/strength increasing properties in dozens of studies, when combined with other bone health-promoting agents (e.g., vitamin D3, prescription drugs like Fosamax and calcitonin), an exaggerated synergy of bone health-promoting effects develop.



--The MK-4 form of vitamin K2 is short-lived, lasting only 3-4 hours in the body. The MK-7 form, in contrast, the form in natto, lasts several days. MK-7 and MK-8-10 are extremely well absorbed, virtually complete.

--Bone health benefits have been shown for both the MK-7 and MK-4 forms.

--Coumadin (warfarin) blocks all forms of vitamin K.





Interestingly, farm-raised meats and eggs do not differ from factory farm-raised foods in K2 content. (But please do not regard this as an endorsement of factory farm foods.)

Another interesting fact: Since mammals synthesize a small quantity of Vit K2 forms from vitamin K1, then eating lots of green vegetables should provide substrate for some quantity of K2 conversion. However, work by Schurgers et al have shown that K1 absorption is poor, no more than 10%, but increases significantly when vegetables are eaten in the presence of oils. (Thus arguing that oils are meant to be part of the human diet. Does your olive oil or oil-based salad dressing represent fulfillment of some subconscious biologic imperative?)

If we believe the data of the Rotterdam Heart Study, then a threshold of 32.7 micrograms of K2 from cheese yields the reduction in cardiovascular events and aortic calcification.

It's all very, very interesting. My prediction is that abnormal (pathologic) calcium deposition will prove to be a basic process that parallels atherosclerotic plaque growth, and that manipulation of phenomena that impact on calcium depostion also impact on atherosclerotic plaque growth. Vitamins D3 and K2 provide potential potent means of at least partially normalizing these processes.

As the data matures, I am going to enjoy my gouda, Emmenthaler, Gruyere, and feta cheeses, along with a few egg yolks. I'm going to be certain to include healthy oils like olive and canola with my vegetables.


All images courtesy Wikipedia.

Copyright 2007 William Davis, MD

Family lessons

17. January 2010 William Davis (4)
Lou was recovering from his 3rd bypass operation. This third go-round left him weaker, slower, less quick on the rebound. In fact, he was lucky to have survived.

At 71 years old, Lou went a good 15 years since his second bypass, another 10 years prior to his first bypass at age 46.

In the days immediately following Lou's bypass, I had a chance to talk to his son, who stayed at his Dad's bedside while Lou struggled through post-op recovery.

"Did your Dad tell you about why this has happened, what caused his heart disease?" I asked.

"Sort of. He just said I should get checked," Lou's son, Aaron, replied.

"Did he mention the lipoprotein(a) pattern he has?"

"No. He never mentioned anything like that. He just said to get checked."

That's how it gets played out more often than not: Mom or Dad has a heart attack, stents, or (3rd) bypass, the children are told to get checked. Getting "checked" assumes that the doctor knows what to check for.

In Lou's case, the reason why he was in the hospital getting his 3rd (and final) bypass was lipoprotein(a), along with genetically-determined small LDL particles, low HDL, a postprandial (after-eating) disorder, hypertension, and borderline diabetes, not to mention vitamin D deficiency, omega-3 fatty acid deficiency, and marginal thyroid function. (Lou, a retired city employee, had showed only marginal interest in correcting these patterns. While he accepted medications, he proved unwilling to engage in the diet and nutritional supplement strategies required to correct his patterns.)

So Lou's 3rd bypass operation provided a moment of reflection for Aaron to ask: "Could I share the fate of my Dad?" With Lou's combination of genetic patterns, there was at least a 75% likelihood that he did. Sadly, going to his doctor would likely yield little more than a cholesterol panel, a question about smoking, and a prescription for Lipitor.

Just getting "checked" would be, more than likely, a recipe for disaster for Aaron: heart disease in his 40s or 50s. That's why you need to take control over this sad state of affairs and ask--no, insist--that an effort be made to determine whether you might share your parents' fate.

Look like Jimmy Stewart

15. January 2010 William Davis (23)

"This diet works great," Don declared. "But I think I've lost too much weight."

At 67 years old and 5 ft. 11 inches, Don began the program weighing 228 lbs (BMI 31.9). Because of high triglycerides, high blood sugar, high c-reactive protein, and excessive small LDL, I instructed Don to eliminate all wheat products from his diet, along with cornstarch and sweets. His intake of lean meats, eggs, vegetables, oils, raw nuts, etc. was unlimited.

Don now weighed 194 lbs, down 34 lbs over 6 months (BMI 27.1). Triglycerides, blood sugar, blood pressure, and well-being had improved dramatically; small LDL, however, had dropped only 30%--still room for improvement.

"My friends say I'm too skinny. They ask if I have cancer!"

I've heard this many times: Someone loses weight in a relatively short period of time and friends and family tell you you're too skinny. "It must be cancer. Nobody loses weight like that."

Unfortunately, many Americans have forgotten what normal looks like. Normal is certainly not a 190-lb, 5 ft 4 in woman, nor is it a 228 lb, 5 ft 11 inch man. But Americans have put on so much weight that the prevailing view of what constitutes "normal" weight has been revised upward. Normal is closer to what we see in old movies from the 1940s and '50s with people like Jimmy Stewart and Donna Reed. That's what we are supposed to look like.

So Don actually remains mildly overweight but is judged as "too skinny," or even cancer-ridden, by friends and family.

Ignore such comments. As you lose pounds and approach a truly desirable weight, realize that you are returning to the normal state, not the vision of "normal" now held by most Americans.

Getting vitamin D right

11. January 2010 William Davis (90)
Vitamin D is, without a doubt, the most incredible "vitamin"/prohormone/neurosteroid I have ever encountered. Frankly, I don't know how we got anything accomplished in health pre-D.

Unfortunately, people I meet rarely take their vitamin D in a way that accomplishes full restoration of vitamin D blood levels. It really isn't that tough.

Here's a list of common tripping points with vitamin D:

"I take vitamin D: 1000 units a day."
This is probably the most common mistake I see: Taking a dose that is unlikely to yield a desirable blood level. (We use 60-70 ng/ml of 25-hydroxy vitamin D as our target.) Most men and women require 6000 units per day to achieve this level. There is substantial individual variation, however, with an occasional person needing much more, a rare person requiring as little as 1000 units.


"I bought some vitamin D on sale. They were white tablets."
Time and again, patients in my office who initially have had successful vitamin D replacement, despite being reminded that only oil-based forms should be taken, switch to tablets. While they initially showed a 25-hydroxy vitamin D blood level, for instance, of 67 ng/ml on 8000 units per day with an oil-based capsule, they switch to a tablet form and the next blood level is 25 ng/ml. In other words, tablets are very poorly or erratically absorbed.

I have had people use tablets successfully, however, by taking their vitamin D tablets with a teaspoon of oil, e.g., olive oil. Oil is necessary for full absorption.


"I'm going to Florida. I'll stop my vitamin D because I'm going to lay in the sun."
Wrong. 90% of adults over 40 years old have lost the majority of their ability to activate vitamin D in the skin. A typical response might be an increase in blood level from 25 to 35 ng/ml--a 10 ng increase with a dark brown tan.

There is an occasional person who, with sun exposure, increases blood levels substantially. This can occur in both fair-skinned and dark-skinned people, though I've never seen it happen in an African-American person. The occasional person who maintains the ability to convert vitamin D with sun exposure, or young people, should seasonally adjust their vitamin D dose, e.g., 6000 units winter, 3000 units summer, or some other regimen that maintains desirable blood levels. You can see that monitoring blood levels (we check levels every 6 months for the first 2 years) is crucial: You cannot know what your vitamin D needs are unless you assess 25-hydroxy vitamin D levels.


"I drink plenty of milk. I don't think I need to take vitamin D."
Oh, boy. This is so wrong on so many levels.

First of all, no adult should be drinking plenty of cow's milk. (A discussion for another day.) Second of all, cow's milk averages 70 units of vitamin D, often the D2 form (ergocalciferol), per 8 oz. Even if the FDA-mandated 100 units per day were present, an average adult dose of 6000 units would require 60 glasses of milk per day. Can you say "diarrhea"?

Likewise, other food sources of vitamin D, such as fish (300-400 units per serving) and egg yolks (20 units per yolk), are inadequate. This makes sense: Humans are not meant to obtain vitamin D from food, but from sun exposure over a large body surface area. And this is a phenomenon that is meant to occur only in the youthful, ensuring that nature takes its course and us older folks get old and make way for the young (i.e., unless we intervene by taking vitamin D supplements).


"My doctor said that my vitamin D blood level was fine. It was 32 ng/ml."
Let's face it: By necessity, your overworked primary care physician, who manages gout, hip arthritis, migraine headaches, stomach aches, prostate enlargement, H1N1, depression, etc., is an amateur at nearly everything, expert in nothing. Nobody can do it all and get it right. Likewise vitamin D. The uncertain primary care physician will simply follow the dictates of the laboratory form that specifies "30-100 ng/ml" as the "normal" or "reference range." Unfortunately, the laboratory often quotes population distributions of a lab measure, not an ideal or desirable level.

To illustrate the folly of population distributions of a measure, imagine you and I want to know what women weigh. We go to a local mall and weigh several thousand women. We tally up the results and find that women weigh 172 lbs +/- 25 lbs (the mean +/- 2 standard deviations). (That's true, by the way.) Is that desirable? Of course it isn't. Population average or population distribution does not necessarily mean ideal or desirable.


"My husband's doctor said he should take 4000 units per day. So I just take the same dose."
That would be fine if all adults required the same dose. However, individual needs can vary enormously. A dose that is grossly insufficient for one person may be excessive for another. Once again, vitamin D dose needs can be individualized by assessing 25-hydroxy vitamin levels in the blood.


"I don't need to take vitamin D. I already take fish oil."
I suspect this mistaken belief occurs either because people confuse fish oil with cod liver oil, which does contain some vitamin D. (Cod liver oil is not the best source of vitamin D, mostly because of the vitamin A content; also a discussion for another time), or because they've heard that eating fish provides vitamin D. However, fish oil capsules do not contain vitamin D unless it is added, in which case it should be prominently and explicitly stated on the label.


"I don't have to take vitamin D. It's summer."
For most people I know, if it's a bright, sunny July day, where are they likely to be? In an office, store, or home--NOT lying in the sun with a large body surface area exposed. Also, most people expose no more than 5-10% of surface area in public. I doubt you cut the grass in a bathing suit. Because of modern indoor lifestyles and fashion, the majority of adults need vitamin D supplementation year-round.


I advise everyone that gelcap vitamin D is preferable. Some, though not all, liquid drop forms have also worked. Take a dose that yields desirable blood levels. And blood levels of 25-hydroxy vitamin D are ideally checked every 6 months: in summer and in winter to provide feedback on how much sun activation of D you obtain.

If your doctor is unwilling or unable to perform vitamin D testing, fingerstick vitamin D test kits can be obtained from Track Your Plaque.

Jimmy Moore's thyroid adventure

10. January 2010 William Davis (17)
My friend, Jimmy Moore of Living La Vida Low Carb, describes his thyroid experience here.

As Jimmy points out, he was looking for a way to jump-start a 50-lb weight loss. In my experience, low thyroid hormone levels ("hypothyroidism") are an exceptionally common cause for weight gain. Correcting even marginal hypothyroidism can facilitate weight loss, often resulting in 10 or more pounds of weight loss within the first month.

Unfortunately, Jimmy's thyroid hormone panel proved normal: TSH 1.3, thyroid hormones free T3 and free T4 in the mid- to upper-half of the reference range.

I say "unfortunately" because it is really an easy, inexpensive, and benign solution for losing weight. (I don't, of course, wish that Jimmy or anyone else develops a thyroid condition. But it really can provide gratifying weight loss results when thyroid function is low.) Jimmy might consider taking his oral temperature first thing in the morning as another means of assessing the adequacy of thyroid function.

Perhaps you will be luckier than Jimmy and have thyroid dysfunction that can be corrected and jump-start your weight loss program. Fingerstick thyroid test kits like the one Jimmy used are available here from Track Your Plaque.

Blood sugar lessons from a Type I diabetic

23. July 2008 William Davis (15)
A friend of mine is a Type I, or childhood onset, diabetic. He's had it for nearly 50 years, since age 6. He's also in the health industry and is a good observer of detail.

He made the following interesting comments to me recently when talking about the effects of various foods on blood sugar:

"When I eat normally, like some vegetables or salad and meat, I dose up to 10 units of insulin to control my blood sugar.

"If I eat a turkey sandwich on two slices of whole wheat, I usually dose 15 units. The bread makes my blood sugar go to 300 if I don't.

"If I eat a Cousins's Sub [a local submarine sandwich chain], I dose 15 units. The bread really makes my blood sugar go up.

"I can only eat a Quarter Pound from McDonald's once a year, because it make my blood sugar go nuts. I dose 15-20 units before having it, and I feel like crap for two days afterwards.

"If I eat Mexican food, I have to dose 15-20 units. For some reason, it's gotten worse over the years, and I need to dose higher and higher.

"Chinese food is the absolute worst. I dose 20-25 units before eating Chinese. I'll often have to dose more afterwards, because my blood sugar goes so berserk."


Nothing beats the real-world observations on the impact of various foods on blood sugar than the observations of people with Type I diabetes. All the insulin they get is in a syringe. Dosing needs to match intake.

Personally, though I love the taste of Americanized Chinese food, I've always been suspicious of what exactly goes into these dishes. But I was unaware of the blood sugar implications.

The impact of Mexican I believe can be attributed to the cornstarch used in the tacos and tortillas, though I also wonder if there are other starches being snuck in, as well.

Lessons about omega-3s from Japan

23. July 2008 William Davis (7)














Image courtesy of apc33.

Japan provides a useful "laboratory" for studying the effect of a culture that relies heavily on eating fish.

The JELIS Trial, the topic of a previous Heart Scan Blog post, showed that supplementation with the single omega-3 fatty acid, EPA, 1800 mg per day (the equivalent of 10 capsules of 'standard' fish oil that contains 180 mg per day of EPA, 120 mg of DHA) significantly reduced heart attack in a Japanese population. Interestingly, this benefit was additive to the already substantial intake of omega-3 fatty acids among the general Japanese population, a population with a fraction of the heart attacks found in western populations like the U.S. (approximately 3% over 5 years in Japanese compared to several-fold higher in a comparable American group).

While there may be genetic and other cultural and lifestyle reasons behind the dramatically reduced cardiovascular risk in Japanese, it is undeniably at least partially due to the increased intake of omega-3 fatty acids from fish. Incidentally, the purported benefits of omega-3 fatty acids provide a vigorous counter-argument to the idea that all humans should be vegetarians.

Anyway, if we were to take some lessons from the Japanese and their greater habitual intake of omega-3 fatty acids from fish, they might include:

--Rural and coastal Japanese are the sub-populations with the highest reliance on fish, about a quarter-pound a day. (Gives new meaning to the idea of a "Quarter Pounder," doesn't it?) This is at least five-times greater than the intake of an average American.

--Likewise, the blood level of omega-3s in the blood of Japanese is 5-fold higher than in Americans.

--The average intake of omega-3s (EPA + DHA) among a broadly-selected population of Japanese is 850 mg per day (320 mg EPA; 520 mg DHA). Intake ranges from 300 mg per day all the way up to 3100 mg per day.

--Greater omega-3 intake (EPA + DHA) is associated with lesser carotid intimal-medial thickness, an index of body-wide atherosclerosis.

--Japanese have far less heart attack and stroke despite greater prevalence of smoking (nearly half of Japanese) and drinking.

--Total fat intake (percent of calories) is nearly identical between Americans and Japanese. It's the proportion of fat calories from omega-3 that is greater, the proportion of omega-6 that is less in Japanese.


The Japanese eat their fish in ways that we do not: As sashimi (raw, as with sushi in its various forms like Nigiri and Chirashi); fried in tempura; shaved, dried fish sprinkled on about anything you can imagine (it's not as bad as it sounds); as a snack, as in dried cuttlefish (which you can purchase in packages as a portable, sweetened fish that you eat on-the-run--I know it sounds awful, but don't poke fun at it until you've tried it); in "soups" with soba noodles. Fish is commonly consumed with rice and soy sauce, as well as other soy-based foods, such as tofu, miso (soy bean paste), or natto. 


I believe that there are some lessons to take from the Japanese and their fish-consuming habits:

1) An omega-3 fatty acid intake of at least 1000 mg per day yields measurable cardiovascular benefits. 

2) Despite the fears over mercury and pesticide residues in fish, this seems to not have played out to be a real-life effect in the Japanese, who consume five-fold greater quantities of fish. 

3) My mother was right after all when she encouraged us to eat more fish. 


DIRECT Study result: Low-carb, Mediterranean diets win weight-loss battle

19. July 2008 William Davis (14)
Drs. Iris Shai and colleagues released results of a new Israeli study, the Dietary Intervention Randomized Controlled Trial (DIRECT) Trial, that compared three different diet strategies. Of those tested, a low-carbohydrate diet was most successful at achieving weight loss.

You can find the full-text of the study on the New England Journal of Medicine website.

322 participants followed one of three diets over two year period. Compared head-to-head, the (mean) weight loss in each group was:

• 2.9 kg (6.4 lbs) for the low-fat group
• 4.4 kg (9.7 lbs) for the Mediterranean-diet group
• 4.7 kg (10.3 lbs) for the low-carbohydrate group

(Average age 52 years at start; average body-mass index, or BMI, 31.)

The conclusion was that the low-carb diet performed the best, with 60% greater weight loss, with the Mediterranean diet a close second.


The diets

The low-fat diet was based on the American Heart Association diet, with 30% of calories from fat (10% from saturated fat) and food choices weighted towards low-fat grains, vegetables, fruits, and legumes and limited additional fats, sweets, and high-fat snacks; calorie intake of 1500 kcal per day for women and 1800 kcal per day for men was encouraged.

The Mediterranean diet was a moderate-fat diet rich in vegetables, with reduced red meat, and poultry and fish replacing beef and lamb. Total calories from fat of 35% per day or less was the goal, with most fat calories from olive oil and a handful of nuts. Like the low-fat program, calories were limited to 1500 kcal per day for women, 1800 kcal per day for men.

The low-carbohydrate diet was patterned after the popular Atkins’ program, with 8% participants achieving the ketosis that Dr. Atkins’ advocated as evidence that a fat-burning metabolism was activated, rather than sugar-burning as fuel. For the 2-month “induction phase,” 20 grams of carbohydrates per day was set as the goal, followed by 120 grams per day once the weight goal was achieved. Unlike the other two diets, calories, protein and fat were unlimited.


Weight loss, lipids, inflammation

You can see from the weight loss graph that the low-carb approach exerted the most dramatic initial weight loss. Interestingly, much of the weight-loss benefit was lost as the carbohydrate intake increased, by study design, back to 120 mg per day. However, the other two diet approaches showed similar phenomena of “giving back” some of the initial weight loss.

The low-carbohydrate diet exerted the greatest change in cholesterol, or lipid, panels: increased HDL 8.4 mg/dl vs. 6.3 mg/dl on low-fat; the triglyceride response was the most dramatic, with a reduction of 23.7 mg/dl vs. 3.7 mg/dl on low-fat. Interestingly, the LDL cholesterol-reducing effect of all three diets was modest, with the most reduction achieved by the Mediteranean diet.

The inflammatory measure, C-reactive protein (CRP), was reduced most effectively by the low-carb and Mediterranean diets, least by the low-fat diet. HbA1c, a measure of long-term blood sugar, dropped significantly more on the low-carb diet.

When the final dietary composition was examined, interestingly, there really were only modest differences among the three diets, with 8% less calories from carbs, 8% greater calories from fat, comparing low-carb to low-fat, with Mediterranean intermediate.



Taken at face value, this useful exercise quite clearly shows that, from the perspective of weight loss and correction of metabolic parameters like triglycerides, HDL,CRP, and blood sugar, low-carbohydrate wins hands down, with Mediterranean diet a close second.

It also suggests that a return to a carbohydrate intake of 120 mg/day allows a partial return of initial weight lost, as well as deterioration of metabolic parameters after the initial positive changes.

Although the study has already received some criticism for such potential flaws as the modest number of Atkins’ followers achieving ketosis (8%), suggesting lax adherence, and the reintroduction of the 120 mg/day carbohydrate advice, I can suspect that these may have been compromises drawn to satisfy some Institutional Review Board. (Whenever a study is going to be conducted involving human subjects, a study needs to pass through the review of an Institutional Review Board, or IRB. IRB’s, while charged to protect human subjects from experimental abuses, also tend to be painfully conservative and will block a study or demand changes even if they are not dangerous, but just veer too far off the mainstream.)


However, several unanswered questions remain:

1) How would the diets have compared if the carbohydrate restriction were continued for a longer period, or even indefinitely? (The divergences would likely have been dramatic.)
2) Will low-carb exert the same cardiovascular event reduction that the Mediterranean approach has shown in the Lyon study and others?
3) Are there effects on health outside of the measures followed that differ among the three diets, such as cancer? (I doubt it, especially given the modest real differences over time. But this will be the objection raised by various "official" organizations.)


I would further propose that:

Low-fat diets are dead

The AHA will cling to their version of low-fat diet, based on difficulty in changing course for any large, consensus-driven organization, not to mention the substantial ($100’s of millions) revenues derived from endorsing low-fat manufactured products. The AHA will also point to the lack of difference in LDL cholesterol among the three, since they cannot get beyond the fact that there’s more to coronary risk—a lot more—than LDL.


Off-the-shelf diets achieve off-the-shelf results

If you just need a T-shirt, a medium might fit fine. But if you’d like a nicely fitting suit or dress, then tailoring to your individual proportions is needed. When aiming towards maximizing benefits on lipoproteins and coronary risk, none of these diets achieve the kinds of changes we often need for coronary plaque reversal, as in the Track Your Plaque program. That requires making dietary changes that exert maximal effects on lipoprotein patterns.

Do I sell heart scans?

18. July 2008 William Davis (12)
I came across a criticism of the Track Your Plaque program recently that suggested that it was nothing more than a program to sell CT heart scans.

Huh?

I suppose if you say that the Track Your Plaque program is nothing more than a way to sell heart disease prevention, omega-3 fatty acids from fish oil, vitamin D, better nutrition, and better identification of causes of heart disease . . . well, I believe that would be true.

But is the program a "front" to sell heart scans?

No, it is not, nor has it ever been.

I've heard about these peculiar suspicions about the program before. Though I've never taken them seriously, let me clear up any lingering uncertainty:


--I have no relationship with any heart scan center, scanning facility, or hospital other than to interpret heart scans.

I do not own a scanner, I have no financial interest in a scanner or scanning center, nor have I ever had any interest. I also have no plans to do so in the future. Let business people in the imaging business do that. I want no part of it. I have seen what these people go through and, frankly, I want no part of it, nor do I want the appearance that I am advocating scans to make money. I'm accused of trying to make money from scans even when I do not have any financial interest!


--I do not sell heart scans or imaging packages, nor have I ever done so.

You can't buy a scan through Track Your Plaque, The Heart Scan Blog, or through me. To me, heart scans are simply a measuring tool to identify the extent of coronary plaque, as well as a tracking tool to follow its course. Without it, there would be no Track Your Plaque. But there is also no alternative. The closest alternative would be carotid intimal-medial thickness, a technique, while useful, is a distant second choice to indirectly gauge coronary plaque by examining the thickness of the carotid lining (not carotid plaque). Perhaps in 10 years, a better measure to gauge and track coronary plaque will emerge that has superior aspects over CT heart scanning. If reasonable, safe, accessible, and quantitative, then Track Your Plaque may adopt that technology as its measuring tool.

Track Your Plaque is not about heart scanning; Track Your Plaque is about measuring and tracking plaque that, in 2008, is still best accomplished with CT heart scans.


--I make loads of money from heart scans and Track Your Plaque.

Yeah, right.

Track Your Plaque is a volunteer venture for my team; none of us get paid a penny for doing all we do, including me. We charge a membership fee on the website (somewhere around $6-7 a month) to pay our expenses, such as code writing for our proprietary software (much of it remains under development), printing costs, modest legal costs, the costs of doing business (e.g., accountant). Despite the fact that Track Your Plaque and the Heart Scan Blog occupies a substantial part of the day of the Track Your Plaque team, none of us are reimbursed for our time. I do believe, however, that this concept is so enormously powerful that it will, someday, pay us all enough to allow us to devote more time and effort to it.

Personally, I can't wait to devote more time and effort to this concept that is simple, logical, and effective. More research is needed, more development is needed, more discussion is needed. Right now, it is all accomplished outside of our busy schedules, including my full-time cardiology practice. I continue to have 7 am procedures, middle-of-the-night calls, weekend hospital rounds and emergencies (though virtually none of these are the patients involved in prevention, but the "other" people: atrial fibrillation, elderly heart failure patients, rhythm disorders, cardiomyopathies, pulmonary hypertension, peripheral vascular disease, the non-compliant).


--The book, Track Your Plaque, is a gimmick to sell you a heart scan.

No, it's a program that relies on this technology. But there's no special deal, no discounts, no steering to heart scan centers that I have a special arrangement with. No such thing exists, nor has there ever been such an arrangement.


I've heard it all. Early on, when I was helping my friend, Steve Burlingame and his wife, Nancy, set up Milwaukee Heart Scan, I helped by providing medical oversite, education of physicians and public, and interpreting heart scans. After all, in the "early days," nobody knew anything about heart scans. It was a long, hard climb against ignorance, habit, entrenched thinking, stubbornness, and stupidity. I've been paid next to nothing for all this. I told Steve long ago that, given the extraordinary expenses of maintaining an independent scanning center, that he should first pay his expenses, pay his technologists, receptionists, and nurse, pay himself, then pay me for reading scans if he had any money left over. Most of the time, Steve had nothing left over and I was paid nothing.

So, while some of my colleagues were assuming that I was rolling in money from "promoting" heart scans, the reality was that I was doing nearly everything for free. (It certainly wasn't the high life I was living; I don't drive a Mercedes, take fancy vacations, none of that. In fact, I work about 51 weeks a year.)

Why do I do this if it doesn't yield a big flow of money? Because I believe in it as a superior path to the conventional. If I were simply interested in making more money--I wouldn't do it. I would simply do what all my cardiology colleagues are doing: more heart catheterizations, more angioplasties and stents, learning how to do carotid stents, iliac stents, peripheral angioplasty, renal stents, acquiring the skills to put in defibrillators, new device insertion like umbrellas in the interatrial septum, etc. There's plenty more money in that. It's also not that hard. I know, because that is my background: high-risk cardiac interventions. That's what I was trained to do, that's what I did from a number years, until I started to see that this was nothing more than "putting out fires" in people who became increasingly ill and reliant on bail-out procedures. It makes lots of money, but it is also fundamentally wrong.

So, no, I do not sell heart scans, nor is the Track Your Plaque program or The Heart Scan Blog meant to promote heart scans except as a tool for tracking this disease.

That's it, pure and simple.

Plaque is the new cholesterol

17. July 2008 William Davis (3)
Which is more important: cholesterol or coronary plaque?

Ask what Dr. Michael Eades' calls "statinators," and you will likely receive a befuddled look. Or, you might receive comments like "Measuring plaque has never been shown to reduce mortality."

While risk factors for heart disease are important, no doubt (my office practice is about half lipid consultation and complex hyperlipidemia management), for many they have become an end in themselves. In other words, LDL cholesterol in particular dominates thinking so much that it has caused many to exclude the fact that plaque---coronary atherosclerotic plaque---is the disease itself.

Dozens of studies, from the St. Francis Heart Study to the 25,000-participant UCLA registry, to the recently-released MESA database (ethic differences, women, as well as superiority to carotid measures) have repeatedly shown that heart scan scores (coronary artery calcium scores) are superior to conventional risk factors (usually via the Framingham risk score) for predicting future heart attack and other events. And the differences are not minor incremental differences. The predictive power of plaque measurement via heart scanning is multiples better: 4 times, 10 times, 20 times or more in various subgroups.

Much of what we do in medicine is not based on long-term studies of outcome, pitting some diagnostic measure or treatment against placebo. It is already standard practice to measure plaque via heart catheterization, crudely via stress testing, and increasingly popular CT coronary angiography. None of these methods have been subjected to studies comparing testing vs. not testing in a large population, followed by some program of prevention to assess differences in mortality, heart attack, and other events.

Why should heart scan be held to such a standard?

Dr. Scott Grundy, lipid guru and one of the experts who sat on the Adult Treatment Panel-II for lipid management guidelines, recently stated [emphasis added]:

"Imaging has at least 3 virtues. It individualizes risk assessment beyond use of age, which is a less reliable surrogate for atherosclerosis burden; it provides an integrated assessment of the lifetime exposure to risk factors; and it identifies individuals who are susceptible to developing atherosclerosis beyond established risk factors. Also of importance, in the absence of detectable atherosclerosis, short-term risk appears to be very low."

Well said, and from a vocal statinator, to boot.

Sadly, Dr. Grundy goes on to say how plaque imaging can serve to better determine who will benefit from statin drug use.

Of course, you and I know that there is far more to reduction of cardiovascular risk applied to a framework of serial plaque quantification ("tracking plaque"!) than statin drugs. I doubt that a man as intelligent as Dr. Grundy truly believes this. I suspect that he is simply stating what he knows what will be published without resistance in the standard medical literature, trying to achieve a modest incremental success just by raising consciousness about heart scanning and plaque imaging: first things first.

Maybe next will be a plaque-tracking, or even a plaque-reducing, mainstream conversation, just like the one we've been conducting for the past four years.

Track Your Plaque success story blows it

17. July 2008 William Davis (3)
Joe was a Track Your Plaque Success Story. With a starting heart scan score of 278, he dropped it 12 months later to 264, a 5% reduction. Though not a huge reduction, Joe's risk for a heart attack or other coronary event was virtually zero. I was very proud of Joe.

Among the culprit lipoprotein patterns that caused Joe's plaque was lipoprotein(a), or Lp(a). Niacin was therefore crucial to his program. It was among the principal reasons he dropped his heart scan score and reduced his risk for heart attack so dramatically.

Since he retired, Joe has been freewheeling around the country, traveling and having a great time. He consequently stopped thinking about his heart disease and Lp(a). He also tired of the occasional hot flushes he'd experienced with niacin. Though the flushes were promptly aborted by drinking two glasses of water, he simply didn't want to be bothered.

So when Joe saw this interesting and tantalizing "flush-free niacin" on the store shelf, he grabbed it.

Joe came back to the office. His blood pressure was 190/94, so high that he was having occasional chest pains from it (which can happen when something called "left ventricular diastolic dysfunction" develops from hypertension). His lipoprotein patterns were terrible, including a big upward jump in Lp(a) and drop in HDL. So I asked him to have another heart scan right away: Score 371, a 40% increase. In other words, his program went down the toilet.

Why?

Simple: Flush-free niacin. I've said it before (No flush = No effect and No flush niacin kills) and I'll say it again:

Flush-free or No-flush niacin is a complete, unadulterated, completely ineffective SCAM.

Flush-free or no-flush niacin is not a substitute for niacin. Joe is yet another example of how dangerous this scam can be. It turned one of our great success stories into a failure.

Please, please, please do not fall for this misleading and potentially dangerous scam product. While the product itself is not intrinsically dangerous, it denies you the benefits of the real thing: niacin.

Thankfully, the mistake in Joe's program was caught before a heart attack or other catastrophe. He did manage to pass a stress test, though with a flagrantly out-of-control blood pressure response. We'll get him back on track--but with niacin, the real thing.

Dr. Cannell comments on vitamin D lab tests

14. July 2008 William Davis (9)
As always, Dr. John Cannell of The Vitamin D Council continues to teach us new lessons about vitamin D.

Apparently, Dr. Cannell is swamped with the attention that vitamin D is drawing, largely due to his efforts to publicize the enormous deficiency of Americans and his great talent for articulating the science. The most current newsletter, while a bit haphazard, makes some excellent new points that I reprint here.

(I did not reprint his conversation about "any form of vitamin D" being acceptable. My experience differs: In nearly 1000 patients who have taken vitamin D supplements, my experience is that most tablet forms are inconsistently absorbed, sometimes not absorbed at all. I therefore advocate only use of gelcaps or liquids. I'm told by members of Track Your Plaque, however, that they are witnessing reliable increases in blood levels of vitamin D by taking the powdered form of Bio Tech Pharmacal's product.)


Does it matter what reference lab my doctor uses?

Yes, it might make a huge difference. A number of methods exist to measure 25(OH)D in commercial labs. The two most common are mass spectrometry and a chemiluminescence method, LIAISON. The first, mass spectrometry, is highly accurate in the hands of experienced technicians given enough time to do the test properly. However, in the hands of a normally trained technician at a commercial reference lab overwhelmed with 25(OH)D tests, it may give falsely elevated readings, that is, it tells you are OK when in fact you are vitamin D deficient. The second method, chemiluminescence, LIAISON, was recently developed and is the most accurate of the screening, high throughput, methods; LabCorp uses it. Quest Diagnostics reference lab uses mass spec. Again, both Quest and LabCorp are overwhelmed by 25(OH)D requests. The problem is that the faster the technicians do the mass spec test, the more inaccurate it is likely to be. If your 25(OH)D blood test says "Quest Diagnostics" on the top, do not believe you have an adequate level (> 50 ng/ml). You may or may not; the test may be falsely elevated. Let me give you an example. A doctor at my hospital had Quest Diagnostics do a 25(OH)D. It came back as 99 ng/ml of ergocalciferol. He is not taking ergocalciferol (D2), he has never taken ergocalciferol, only cholecalciferol, and he is not taking enough to get a level of 99 ng/ml, 50 ng/ml at the most. His email to Dr. Brett Holmquist at Quest about why Quest identified a substance he was not taking went unanswered other than to say "any friend of Dr. Cannell's is a friend of ours."

Long story short: if your lab report says "LabCorp" on the top, it is probably accurate; if it says Quest Diagnostic, it may be falsely elevated. While LabCorp has also been overwhelmed with 25(OH)D requests, the LIAISON method they use is relatively easy to do and does not rely on technician skill as much as the mass spec methods do. I'm not saying this because I'm a consultant for DiaSorin, who makes LIAISON, I'm saying it because it is true. If you don't believe me, get Quest to make me an offer to be their consultant at 10 times what DiaSorin is supposed to be paying me ($10,000 per year) and see how fast I turn Quest down. If Quest fixes their test, I'd love to consult. The ironic thing: I've made both Quest and LabCorp lots of money via this newsletter, the website, and by repeatedly telling the press that people need to know their 25(OH)D level, which has contributed to the skyrocketing sales of 25(OH)D blood tests.

Demand for vitamin D tests soars as nutrient's potential benefits touted.

Here you can help. Find out which labs in your town use Quest Diagnostics and which use LabCorp. Have a 25(OH)D test at both labs the same day (you will have to pay for them yourself). Then send both results to the Vitamin D Council address below. If Quest Diagnostics does not fix their 25(OH)D test, the Vitamin D Council will fix it for them.



My doctor prescribed Drisdol, 50,000 IU per week. What is it?

Drisdol is a prescription of 50,000 IU tablets of ergocalciferol or D2. Ergocalciferol is not vitamin D but it is similar. It is made by irradiating ergosterol, which is found in many living things, such as yeast. D2 is not normally found in humans and most studies show it does not raise 25(OH)D levels as well as human vitamin D (cholecalciferol or D3) does. However, Drisdol is a lot better than nothing. The best thing to do, if you are vitamin D deficient, and a human, is to take human vitamin D, cholecalciferol, A.K.A. vitamin D3.



What is the ideal level of 25(OH)D?

We don't know. However, thanks to Bruce Hollis, Robert Heaney, Neil Binkley, and others, we now know the minimal acceptable level. It is 50 ng/ml. In a recent study, Heaney et al enlarged on Bruce Hollis's seminal work by analyzing five studies in which both the parent compound, cholecalciferol, and 25(OH)D levels were measured. It turn out that the body does not reliably begin storing the parent compound (cholecalciferol) in fat and muscle tissue until 25(OH)D levels get above 50 ng/ml. The average person starts to store cholecalciferol at 40 ng/ml, but at 50 ng/ml, virtually everyone begins to store it for future use. That is, at levels below 50 ng/ml, the body is usually using up the vitamin D as fast as you make it or take it, indicating chronic substrate starvation, not a good thing.

Hollis BW, Wagner CL, Drezner MK, Binkley NC. Circulating vitamin D3 and 25-hydroxyvitamin D in humans: An important tool to define adequate nutritional vitamin D status. J Steroid Biochem Mol Biol. 2007 Mar;103(3-5):631-4.

Heaney RP, Armas LA, Shary JR, Bell NH, Binkley N, Hollis BW. 25-Hydroxylation of vitamin D3: relation to circulating vitamin D3 under various input conditions. Am J Clin Nutr. 2008 Jun;87(6):1738-42.



I have advanced renal failure and I'm on dialysis, how much vitamin D should I take?

The same as everyone else. Since I have told you about commercial labs ripping you off, let's add some drug companies. Patients with advanced renal failure need activated vitamin D or one of it's analogs, available by prescription. This is very important as their kidneys cannot make enough 1,25-dihydroxy-vitamin D (calcitriol) to maintain serum calcium. However, the rest of their tissues activate vitamin D just fine and when those tissues get enough, and when the kidneys get more vitamin D, the calcitriol spills out into the blood, lowering their need for prescription calcitriol or one of its analogs. The companies that make the analogs don't like that, it means reduced sales. So these companies do nothing, the scientists behind these companies say nothing, and renal failure patients die prematurely from one of the vitamin D deficiency diseases.

Vieth R. Vitamin D toxicity, policy, and science. J Bone Miner Res. 2007 Dec;22 Suppl 2:V64-8.



When I asked my doctor for a 25(OH)D blood test, he just laughed and said it was all idiotic. What can I do?

Help me unleash the dogs of war, the plaintiff attorneys. If you read about past nutritional epidemics caused by society, such as beriberi or pellagra, you will realize that education alone will take decades. Physicians successfully fought against the idea that thiamine deficiency caused beriberi for decades. However, things are different now. The agents of change in modern America, as obnoxious as they are, are plaintiff attorneys. Once the first malpractice lawsuits claiming undiagnosed and untreated vitamin D deficiency led to breast cancer, autism, heart disease, etc., get past summary judgment, and they will, and end up in front of a jury, and they will, things will change rapidly. One of the main reason physicians do what they do is fear of lawsuits. In a matter of months, arrogance and ignorance will give way to 25(OH)D tests and vitamin D supplementation.

Goodwin JS, Tangum MR. Battling quackery: attitudes about micronutrient supplements in American academic medicine. Arch Intern Med. 1998 Nov 9;158(20):2187-91.


And, to help support Dr. Cannell's efforts (I sent him a check for $250 a few months back; time for more), here is his contact info:

John Cannell, MD
The Vitamin D Council

Send your tax-deductible contributions to:

The Vitamin D Council
9100 San Gregorio Road
Atascadero, CA 93422

Privileged information

12. July 2008 William Davis (9)
In 1910, taking a person's blood pressure was considered revolutionary, a high-tech practice that was of uncertain benefit.

Dr. Harvey Cushing of Johns Hopkins Hospital in Baltimore had observed a blood pressure device while traveling in Europe, developed by Dr. Sciopione Riva-Rocci. Cushing brought this new technology back with him to the U.S. and promptly promoted its use, convinced that this insight into gauging the forcefulness of blood pressure would yield useful clinical insights.

But, in 1910, practicing physicians rejected this new technology, preferring to use their well-established and widely practiced technique of pulse palpation (feeling the pulse), skeptical that the new tool added value. Medical practice of the day was rich with descriptions of the strength and character of the pulse: pulsus parvus et tardus (the slow rising pulse of aortic valve stenosis), the dicrotic notch of aortic valve closure transmitted to the pulse, the "water-hammer" pulse of aortic valve insufficiency.

Over the next 20 years, however, the medical community finally gave way to the new technique, although only physicians were allowed to use blood pressure devices, as nurses were regarded as incapable of mastering the skills required to perform the procedure properly.

Stethoscopes were also gaining in popularity in the early 20th century, but were also the exclusive province of physicians trained in their use. Nurses were not allowed to use stethoscopes until the 1960s. Even then, nurses were not allowed to call them "stethoscopes," but "nurse-o-scopes" or "assistoscopes," and the nurses' version of the device was manufactured to look different to avoid confusion with the "real" doctor's tool.

And just half a century ago, if you wanted to look at a medical textbook, you would have to go to the library and ask for special permission. The librarian would lower her glasses and look you up and down to determine whether or not you were some kind of pervert. Only then might you be granted permission to peer into the pictures of organs and naked bodies.

Such has been the spirit of medicine for centuries: Medicine and its practices are meant to be secret, the insider knowledge of a privileged few.

Fast forward to 2008: The Information Age has overturned the rules of privileged information. Now you have access to the same information as I do, the same information available to practicing physicians. The playing field has been levelled.

Curiously, while information access has advanced at an instantaneous digital pace, attitudes in medicine continue to evolve at the traditional analog crawl. Many of my colleagues continue to be dismayed at the new public access to health information, belittle patients for excessive curiosity about their health, lament the erosion of their healthcare-directing authority. And while new concepts race ahead as we race towards a wiki-like collective growth in healthcare knowledge, physicians are still mired by their reluctance to abdicate their once-lofty positions as chief holders of secrets.

I believe that this is part of the reason why family doctors and cardiologists have been slow to adopt technologies like heart scans and self-empowering programs like Track Your Plaque: processes that take heart disease prevention away from the hands of physicians and place more control into the hands of the people.

Imagine the horror felt by physicians in 1935 of a young upstart nurse boldly trying to use a stethoscope to take a patient's blood pressure. You can imagine the internal horror now being felt as you and I dare to take control over heart disease and deny them the chance to put in four stents, three bypass grafts, then direct our future health habits.

But technology has a way of marching on. It will encounter resistance, bumps, and blind-alleys, but it will go on.

Dr. Jeffrey Dach on the Track Your Plaque program

10. July 2008 William Davis (5)
Dr. Jeffrey Dach posted a great piece on his blog, Bioidentical Hormone Blog , about his perspective on the Track Your Plaque program.

It's worth reading even for those familiar with the program, just to see a slightly different perspective. He also included many great graphics to illustrate his points.

CAT Coronary Calcium Scoring, Reversing Heart Disease












Also, see Dr. Dach's Heart Disease: Part 2, for some novel thoughts.

Vitamin D and programmed aging?

9. July 2008 William Davis (8)
As we age, we lose the capacity to activate vitamin D in the skin.

Studies suggest that, between ages 20 and 70, there is a 75% reduction in the ability to activate vitamin D. The capacity of conversion from 25 (OH) vitamin D to 1,25 di(OH) vitamin D also diminishes.

Holick M. Sunlight and vitamin D for bone health and prevention of autoimmune diseases, cancers, and cardiovascular disease.



From Holick, M. 2006

This would explain why 70-year olds come to the office, just back from the Caribbean sporting dark brown tans, are still deficient, often severely, in blood levels of vitamin D (25(OH) vitamin D). A tan does not equal vitamin D.














Courtesy Ipanemic


A practical way of looking at it is that anyone 40 years old or older has lost the majority of ability for vitamin D activation.

This often makes me wonder if the loss of vitamin D activating potential is nature's way to get rid of us. After all, after 40, we've pretty much had our opportunity to recreate and make our contribution to the species (at least in a primitive world in which humans evolved): we've exhausted our reproductive usefulness to the species.

Is the programmed decline of vitamin D skin activation a way to ensure that we develop diseases of senescence (aging)? The list of potential consequences of vitamin D deficiency includes: osteoporosis, poor balance and coordination, falls and fractures; cancer of the breast, bladder, colon, prostate, and blood; reductions in HDL, increases in triglycerides; increased inflammation (C-reactive protein, CRP); declining memory and mentation; coronary heart disease.

Isn't that also pretty much a list that describes aging?

A fascinating argument in support of this idea came from study from St Thomas’ Hospital and the London School of Medicine:

Higher serum vitamin D concentrations are associated with longer leukocyte telomere length in women

Telomeres are the "tails" of DNA that were formerly thought to be mistakes, just coding for nonsense. But more recent thinking has proposed that telomeres may provide a counting mechanism that shortens with aging and accelerates with stress and illness. This study suggests that both vitamin D and inflammation (CRP) impact telomere length: the lower the vitamin D, the shorter the telomere length, particularly when inflammation is greater.
















Data supporting vitamin D's effects on preventing or treating cancer, osteoporosis, lipid abnormalities, inflammation, cardiovascular disease, etc., is developing rapidly.

Now the big question: If declining vitamin D is nature's way of ensuring our decline and death, does maintaining higher vitamin D also maintain youthfulness?

I don't have an answer, but it's a really intriguing idea.
All posts by william-davis

Are you a skinny fat person?

29. September 2006 William Davis (1)
AT 186 lbs. and 5 feet 10 inches, Doug did not regard himself as overweight. Sure, he had a little extra "love handles", a small bulge in the belly and a waist of 34 inches. But he was by no means fat, particularly compared to most of his friends, neighbors, and co-workers, many of whom were 50-100 lbs heavier.

But examine Doug's lipoprotein patterns and, if you didn't know what he looked like, you'd guess that he's at least 50 lbs or more overweight. His prominent patterns included low HDL, small LDL, high triglycerides, the after-eating IDL, and borderline high blood sugar of 116 mg/dl. His blood pressure usually ranged around 138/82.

In other words, Doug is among the 5-10% of people who have most of the features of the so-called "metabolic syndrome", but don't look the part. They usually (though not always) have a modest excess of visceral abdominal fat. While some people have to be 100 lbs overweight before they express these patterns, someone like Doug could do it with minimal excess weight, sometimes as little as 5-10 lbs.

Several specific genetic patterns can account for this exagerrated sensitivity to weight, but the solutions remain much the same. Heightened sensitivity to processed carbohydrates, particularly those containing wheat, is commonly present. A sharp reduction in processed carbohydrates like breads, breakfast cereals, and pretzels yields a huge benefit. Reduction in weight, of course, can also yield marked improvement in these patterns. This means that Doug should consider achieving his truly ideal weight of <175 lbs and become a truly skinny skinny person. Though his patterns might not be fully corrected, he will see substantial improvement across the board.

These patterns are also potent triggers for coronary plaque growth. Correction of low HDL, small LDL, etc. is crucial if you are to seize hold of your heart scan score.

Heart disease "reversal" gives health a bad name

28. September 2006 William Davis (0)
Put the search phrase "reverse heart disease" into your internet search engine, and you'll uncover an astonishing range of sites, all making extravagant promises.

The treatment programs offered range from the bizarre (colonic irrigation, magnetism, etc.), to centers using conventional approaches like statin drugs and low-fat diets, to sites that make lofty predictions with few unique tools (slash the fat and heart disease dissolves).

95% or more of the sites you turn up are clearly pandering to the unknowing, the unsophisticated, the hopeless, or other helpless niche groups. Homeopathic preparations, chelation, magnical combinations of herbals, you name it, you'll find it attached to claims for heart disease reversal.

I've seen people use many of these treatments. Is there any effect on the rate of increase of the heart scan score? Do they impact on the 30% per year expected rate of increase? Absolutely not.

Unfortunately, this gives anyone practicing truly effective methods to reverse coronary plaque a bad name. Just associating with this suspect group of "practitioners" can make us look bad--guilt by association.

Whenever someone claims to have the secret of heart disease reversal, I ask "Can you prove it?" Show me some evidence. It doesn't necessarily have to be $30 million drug company sponsored study, but some evidence of effectiveness should be available. The only thing we should take on faith is our religion, not our health care.

Our growing number of people who have, indeed, reversed their heart scan scores--reversed heart disease--to me is persuasive evidence of the value of the Track Your Plaque approach. Not foolproof, not 100%, but the best damned approach I'm aware of, by a long shot.

Trans fats to be banned

27. September 2006 William Davis (0)
Sometimes good may come from legislation.

The City of New York is contemplating a ban on trans-fat use by restaurants, bakeries, and other food establishments in preparation of their foods. (Trans-fats are also known as hydrogenated fats.)

At this point, I believe it's unclear, should this pass, what the response will be. If food preparers turn to butter, that's not much better. (Don't get fooled by the non-sensical argument of which is better, butter or margarine--they're both terrible.) Subtracting hydrogenated fats will no doubt cause major disruption of food preparation habits. It may even increase the cost of food slightly.



I believe that the true positive effect of this situation, however, will be the tremendously heightened awareness it will raise in the public, both in New York and elsewhere, on just how bad and pervasive trans-fats are. It may increase awareness that foods like donuts and pastries are not just about excessive quantities of sugars, but also trans-fat content.

If you're already a Track Your Plaque follower, you already know that the easiest way to dodge trans-fats in your diet is to minimize your use of processed foods--the cellophane-wrapped, pulverized, dried, just-add-water, microwavable and ready-to-eat foods that line supermarket shelves. Trans-fats are purely man-made. You won't find them--not a stitch--in green peppers, lettuce, olive oil, almonds. . .unprocessed foods. Watch for an in-depth report on trans-fats on the Track Your Plaque website in which we will detail the scientific evidence behind this movement, how to recognize when foods contain trans-fats, etc.

Back to basics!

27. September 2006 William Davis (0)
Harold is energetic and highly motivated. His heart scan score of 997 really threw him for a loop: his view of himself as a healthy, slender, 58-year old clearly needed revision.

So Harold set himself on a quest to find new ways to help him deal with his heart disease risk. He enrolled in the Track Your Plaque program. Unfortunately, he skimmed through the information but didn't really put much of it to use.

Instead, he wanted the "secret" information that other people didn't know about, "insider" information that couldn't be found in magazines, wasn't know by doctors.

He'd read that hawthorne was useful for opening coronary arteries, so he bought hawthorne at the health food store. He read that coenzyme Q10 was a little know way to strengthen the heart, so he added that. A Chinese doctor in town was advertising chelation therapy that "dissolved plaque". He subscribed to a once-a-week intravenous infusion at the doctor's holistic clinic of Eastern medicine. He'd heard that testosterone opened up arteries, so he purchased a preparation of chrysin, horny goat weed, yohimbine, and saw palmetto. He was suspicious of many conventional medicines, but he didn't want to ignore his LDL cholesterol of 172 mg/dl. So he added guggulipid and a combination cholesterol-reducing product that contained about 10 ingredients.

Harold pursued his quest, often adding new agents that came with promising stories. One year later, Harold eagerly got another heart scan, certain that his extraordinary efforts were sure to yield a dramatic drop in his heart scan score. The score: 1372, a 37% increase.

Harold was therefore several thousand dollars poorer and several steps closer to taking the plunge, allowing a potentially fatal disease to cut his life short.

The message: There's no need to re-invent the wheel. There are no top-secret ways to reverse atherosclerotic plaque.


Don't neglect the basics. You can't do calculus until you learn how to add, subtract, and divide. From a heart scan score reducing perspective, achieving 60-60-60 in basic lipids, normalizing blood pressure and blood sugar, identifying any hidden lipoprotein patterns like small LDL and Lp(a), losing weight to your ideal weight, taking fish oil, normalizing vitamin D blood levels to 50-70 ng/ml--these are the necessary prerequisites to achieve control over your coronary plaque and stop the increase in your heart scan score.

You don't need to waste your time with the rants of some supplement-hawker eager to sell you the next cure for heart disease. I'm often amazed at the number of people who do so yet have never even taken care of someone with heart disease. Would you allow someone to try and repair your car if they've never actually laid their hands on an engine before? Then why would you entrust such a person with your health?

The Track Your Plaque approach is not fool-proof, but it's the best there is by a long shot.

I don't care about hard plaque!

25. September 2006 William Davis (10)
I ran into a cardiology colleague this weekend. He was aware of my interest in CT heart scanning and plaque reversal.

Out of the blue, he declared "I don't care about hard plaque! I only care about soft plaque." He then proceeded to describe to me how everyone--EVERYONE--needs a CT coronary angiogram to identify "soft plaque".

Is there any truth to this view? Are we only identifying "hard plaques" by focusing on calcium and calcium scores on simple CT heart scans?

Several issues deserve clarification. First of all, CT heart scans don't identify hard plaque. They identify total plaque. Because calcium is a component of the majority of atherosclerotic plaque, comprising approximately 20% of its volume, a calcium "score" can be used to indirectly quantify total plaque, both "hard" and "soft".

Anyone cardiologist who performs a lot of the procedure, intracoronary ultrasound, knows that most human plaque is also not purely soft or hard, it is mixture of both. (I've been performing this procedure since 1995.) Quantifying only soft or only hard plaque is therefore only possible in theory, not in practice.

I believe my colleague does have a valid point in one regard, however. There is indeed a small percentage of people, probably around 5% of all people who have CT heart scans, who have scores of zero yet have a modest quantity of pure "soft" plaque. These people may be misled by having a zero score. How can these people benefit from better information?

Several ways. First, people like this tend to have very high LDL cholesterols, generally 180 mg/dl or greater. They may have a very worrisome family history, e.g., father with heart attack in his 30s or 40s. This small proportion of people with zero heart scan scores may benefit from receiving X-ray dye with their heart scan, i.e., a CT coronary angiogram. Keep in mind that we're assuming everyone is without symptoms, also. If symptoms are part of the picture, everything changes.

But should everybody get a CT coronary angiogram? I don't believe so. A CT coronary angiogram involves far more radiation exposure, greater expense (usually $1800 to $4000), and, with present day technology, does not yield quantitative (measurable) information that is useful for longitudinal use for repeated scans. You don't want to undergo yearly CT coronary angiograms, for instance.

Stay tuned for more on this issue. In the meantime, I continue to try and inform my colleagues about what is right, what is wrong, what is preferable for patient safety and yields truly empowering information, and try to impress on them that the practice of cardiology is not just about enriching their retirement accounts.

Try an experiment in a wheat-free diet

23. September 2006 William Davis (1)
Years back, I'd heard some people argue that wheat-based products were detrimental to health. At the time, I thought they were nuts. After all, wheat is the principal ingredient in a huge number of American staples like breakfast cereals and bread.

What changed my mind was the low-fat movement of the 1980s and 1990s. Proponents of low-fat diets claim that heart disease is caused by excess fat in the diet. A diet that is severely restricted in fat therefore might cure or reverse heart disease.

But low-fat diets evolve into high-carbohydrate diets. This nearly always means an over-reliance on wheat products. People will say to me "I had a healthy breakfast: shredded wheat cereal in skim milk and two slices of whole wheat toast." Yes, it is low-fat, but is it healthy?

Absolutely not. Followers of the Track Your Plaque program know that low-fat diets ignite the formation of small LDL particles (a VERY potent trigger of coronary plaque growth), drops HDL, raises triglycerides, causes resistance to insulin and thereby diabetes, raises blood pressure. They also make you fat, with preferential accumulation of abdominal visceral (intestinal lining) fat.

Look at people with gluten enteropathy, a marked intolerance to wheat products that results in violent bowel problems, arthritis, etc. if unrecognized. These people, if the diagnosis is made early, are strikingly slender and commonly unusually healthy otherwise. There's a message here.

If you need convincing, try an experiment. Eliminate--not reduce, but eliminate wheat products from your diet, whether or not the fancy label on the package says it's healthy, high in fiber, a "healthy low-fat snack", etc. This means no bread, pasta, crackers, cookies, breads, chips, breading on chicken, rolls, bagels, cakes, breakfast cereal...Whew!

You won't be hungry if you replace the lost calories with plentiful raw almonds, walnuts, pecans, sunflower and pumpkin seeds; more liberal use of healthy olive oil, canola oil and flaxseed oil; adding ground flaxseed and oat bran to yogurt, cottage cheese, etc.; and more lean proteins like lean beef, chicken, turkey, and fish.

I predict that, not only will you lose weight, sometimes dramatically, but you will feel better: more energy, more alertness, sleep better, less moody. Time and again, people who try this will tell me that the daytime grogginess they've suffered and lived with for years, and would treat with loads of caffeine, is suddenly gone. They cruise through their day with extra energy.

Success at this can yield great advantage for your heart scan score control and reversal efforts. It will give you greater control over small LDL and pre-diabetic patterns, in particular.

Bigger, faster plaque reversal

22. September 2006 William Davis (0)
Perhaps it's too early to tell whether it's true, but believe that we're seeing coronary plaque reversal--i.e., reduction of CT heart scan score--that is BIGGER and FASTER than ever before. We are now witnessing 20-30% reductions in score, even in the first year.

Early in our experience, I was thrilled with a slowing of plaque growth. Recall that coronary plaque grows at the rate of 30% per year. We would often seen slowing to 10-15% per year in the first year, then a levelling off to little or no increase in the 2nd or 3rd year. Regression, or reduction of score, was less common.

Now, with some further tweaking of our program, we are seeing these large magnitudes of coronary plaque reversal routinely. Not in everybody, of course. There are exceptions that mostly includes people who are less motivated and occasional people with more difficult to control lipoprotein patterns.

I believe that part, or perhaps most, of our recent success is from normalizing blood levels of 25-OH-vitamin D3 levels to 50-70 ng/ml. I'm unable to tell you why this occurs, but I am convinced that it has added huge advantage. Raising blood vitamin D levels to normal carries enormous implication: reduction of colon and prostate cancer risk, reduction of blood pressure, sensitization to insulin, prevention of arthritis and multiple sclerosis, and--I believe--control over coronary plaque calcification and growth.


Watch for a profile of one of our latest success stories, a physician who was experiencing 20% per year plaque growth three years in a row until he followed the Track Your Plaque approach and promptly experienced an 18% reduction in heart scan score. You'll find it in our next newsletter. To subscribe, go to the www.cureality.com homepage and click on the free book download.

I need to do more procedures!

22. September 2006 William Davis (0)
I sat next to a cardiology colleague of mine last evening at a dinner. He was lamenting the fact that, because of changes in hospital affiliations of his several-member cardiology group, he'd seen a drop in the volume of heart catheterizations he was performing.

"I'm used to doing 5 cases a day! Now I'm down to 3 or 4 a day." He went on to tell me how he's working to increase his volume. "I'm branching out into doing carotid stents and anything I can find in the legs." He also described how he was cultivating referring physicians to send him more procedural patients.

Now, this colleague, I believe, is a hard-working, conscientious physician. But his attitude reflects the perverse logic of many physicians: I need to do more procedures, not because it benefits patients, but because that's what I want to do--to be busy, make more money, acquire more experience, build my ego, etc.

Doing more procedures has nothing to do with an altruistic goal of doing more good for society. It is purely for selfish reasons. Beware of this shockingly common, pervasive attitude. There's a proper time and place for heart procedures, or any procedure, for that matter. But feeding your doctor's ambitions is not a good reason.

Fast food and quick plaques

20. September 2006 William Davis (0)
Such was the title of Dr. William Roberts' editorial back in 1987 discussing the health effects of fast foods.

If you need a graphic illustration of the extraordinarily damaging health effects of fast foods, take a look at trends in mainland China. A recent editorial in the American Journal of Cardiology written by Dr. Tsung Cheng of George Washington University makes several points:

--The popularity of fast food in China is booming, with Chinese now more likely than Americans to eat in a fast food restaurant. Each week, 41% of Chinese eat in a fast food restaurant at least once, compared to 35% in the U.S.

--Average total cholesterol levels have skyrocketed from 150 mg/dl in 1958 to 230 mg/dl in 2003.

--50% of Chinese with normal blood pressure in 1992 are now hypertensive.

--Hospitalization for heart disease rose from the 5th most common diagnosis to #1, now constituting nearly 50% of all hospital admissions.

McDonald's and KFC dominate the fast food landscape in China, but up and coming competitors are growing at exponential rates. A media conversation that will surely be reported in the near future is the boom in obesity and diabetes in China as these trends express themselves in weight gain, as it has in the U.S.


I hope you've all seen the entertaining but frightening documentary, Supersize Me chronicling the travails of 30-something Morgan Spurlock as he eats all his meals for one month at McDonald's restaurants in 20 cities. Though focusing on McDonald's, the movie is about a lot more than that. It paints a picture of how fast food as well as food manufacturers in general have changed--distorted--our eating habits.

If you haven't yet seen it, I would urge you to do so and watch it with the rest of the family. My kids (ages 8, 12, and 14) were shocked (and entertained) and they haven't set food in a fast food restaurant since.

But fish oil is too drastic!

20. September 2006 William Davis (0)
Ted is a 74-year old physician, still conducting a busy practice. He came to me because of some vague fatigue and breathlessness. He also got himself a CT heart scan. His score: 1277.

When he came to my office, he clearly became breathless with just minimal effort. A stress test confirmed an area of much reduced blood flow to the front of his heart muscle. A heart catheterization identified a severe blockage of 95% in the left anterior descending artery and a stent was inserted. This resulted in relief of Ted's symptoms.

When Ted returned to the office after his discharge from the hospital, I advised him that some major changes in his prevention program were overdue. "After all, Ted, you were lucky this time. You were provided some warning. It doesn't always work that way." So I advised Ted to make a number of changes in his diet (he was following an old-fashioned, and quite self-destructive, low-fat diet), have lipoproteins assessed to identify hidden causes of coronary plaque, and take fish oil.

"Fish oil? I don't think so. That's pretty drastic!" he exclaimed. He felt that all the nutrition he needed was contained in the food he ate. Even after several lipoprotein abnormalities were uncovered like small LDL and excessive after-eating (post-prandial) patterns, he still resisted any changes. "I'm going to just wait and see how I feel. But I will take aspirin."

Such is the state of mind of the older physician: procedures are okay, low-fat diets prevent heart disease, and the Beatles are touring America. But fish oil? No way!

Unfortunately, Ted's attitude encapsulates the attitudes of many of my medical colleagues who don't share the excuse of age. They still practice the woefully outdated ways of physicians like Ted, clinging to notions of "balanced diets", nitroglycerin representing a rational treatment for coronary disease, and adequate rest being curative for heart conditions.

The world is changing. We're entering an exciting age of self-empowerment. The ridiculous notions of health practiced in the last half of the 20th century are withering and dying. Poor Ted. He must view the current healthcare landscape as increasingly incomprehensible to a guy who started out delivering babies at home. Perhaps, in some respects his world was better. But, in coronary disease prevention, attitudes like this need to go the way of steam engines and racial segregation--good riddens!