The most important weight loss tool

4. March 2010 William Davis (15)

Question: What is the most effective tool available to help you lose weight? 


A pedometer (walk 10,000 steps, etc.)?

A treadmill? 




A bicycle?






No. None of the above. 

The most important tool you can use to achieve weight loss is your glucose monitor:



Timing of blood sugars

3. March 2010 William Davis (5)
Because different foods generate different blood sugar (glucose) responses, the timing of your blood sugar is an important factor to consider.

This question has come up a number of times. Commenters have asked whether the one-hour postprandial glucose is timed with the start of the meal or the conclusion of the meal.

In my view, if we simply ignored all aspects of meal composition, then blood glucose should be obtained one hour after the conclusion of a meal. This is because most mixed meals (i.e., mixed in composition among proteins, fats, and carbohydrates) yield peak blood glucose levels at 60-90 minutes after consumption. Timing blood glucose to 60 minutes after the conclusion of a meal puts the sample right about at the peak.

But this is an oversimplification. For instance, here is the blood glucose behavior after so-called "complex" carbohydrates wheat bread, rye bread, rye made with beta glucan, and whole wheat pasta (50 grams carbohydrates each) in slender, healthy volunteers, mean age 29 years:


From Juntunen et al 2002

Note that blood glucose peaks at 35 minutes postprandial. (To convert glucose in mmol/L to mg/dl, multiple by 18. Thus, whole wheat bread increased blood glucose from 94 mg/dl to 122 mg/dl. Also note the lower peak glucose for pasta, but sustained higher glucose levels hours later.)

In another study, older (mean age 64 years), overweight (BMI 27.9) females with diabetes were given 50 grams carbohydrate, 50 grams carbohydrate with olive oil, or 50 grams carbohydrate with butter:


From Thomsen et al 2003. Control meal of soup plus 50 g carbohydrates ({blacktriangledown}), the control meal plus 80 g olive oil ({circ}), and the control meal plus 100 g butter (•).

In this experience, note that postprandial glucose peaks 60-120 minutes after the meals (consumed within 10 minutes), delayed more when either oil is included. Blood glucose started at 144 mg/dl and peaked as high as 230 mg/dl with carbohydrates only; peaks were reduced (along with AUC) when oil was included. (Note the differential effect, olive oil vs. butter.)

These two sets of observations give you a range of blood glucose behavior. One side lesson: Carbohydrates should never consumed by themselves, else you will pay with a high blood sugar (not to mention the hypoglycemic response later for many).

Psssst . . . There's sugar in there

1. March 2010 William Davis (13)
You non-diabetics who check your postprandial blood sugars already know: There are hidden sources of sugar in so many foods.

By now, everybody should know that foods like breakfast cereals, breads, bagels, pretzels, and crackers cause blood sugar to skyrocket after you eat them. But sometimes you eat something you thought was safe only to find you're showing blood sugars of 120, 130, 150+ mg/dl.

Where can you find such "stealth" sources of sugars that can screw up your postprandial blood sugars, small LDL, inflammation, blood pressure, and cause you to grow visceral fat? Here's a few:

Balsamic vinaigrette
Many commercially-prepared balsamic vinaigrettes, especially the "light" varieties, have 3 or more grams carbohydrates per tablespoon. Generous use of a sugar-added vinaigrette can therefore provide 12+ grams carbs. (Some, like Emeril's and Wish Bone, also contain high-fructose corn syrup.)

Hamburgers
I learned this lesson the hard way by taking my blood sugar after having a hamburger, turkey burger, or vegetarian burger (without bun): blood sugar would go way up. The effect is due to bread crumbs added to the meat or soy.

Tomato soup
If it were just tomatoes, it would still be somewhat high in sugars. But commercially-prepared tomato soup often contains added high-fructose corn syrup, sucrose, and wheat flour, bringing sugar totals to 12 to 20+ grams per half-cup. A typical 2-cup bowl of tomato soup can have upwards of 80 grams of sugar.

Granola
Sure, granola contains a lot of fiber. But most granolas come packed with sugars in various forms. One cup of Kellogg's Low-fat Granola with Raisins contains an incredible 72 grams (net) carbohydrates, of which 25 grams are sugar.


Given modern appetites and serving sizes, you can see that it is very easy to get carried away and, before you know it, get exposed to extraordinary amounts of sugar and carbohydrates eating foods you thought were healthy.

And don't be fooled by claims of "natural" sugar. Sugar is sugar--Just check your blood sugar and you'll see. So raw cane sugar, beet sugar, and brown sugar have the same impact as white table sugar. Honey, maple syrup, and agave? They're worse (due to fructose).

How low should blood sugar be?

28. February 2010 William Davis (0)
What should your blood sugar (glucose) be after eating?

Take a look at the data from the Whitehall study reported in 2006. The Whitehall Study stands apart from other studies in that it was very large (over 18,000 participants) who were observed for an unusually long time (33 years). All participants were administered a 50 gram glucose "challenge" at the start with glucose levels checked after the glucose challenge.

Here's what they found:




From Brunner et al 2006.

You just THINK you're low-carb

27. February 2010 William Davis (72)
Systematically checking postprandial (after-eating) blood sugars is providing some great insights into crafting a better diet for many people.

I last discussed the concept of postprandial glucose checks in To get low-carb right, you need to check blood sugars.

Here are some important lessons that many people--NON-diabetic people, most with normal blood glucoses or just mildly increased--are learning:

Oatmeal yields high blood sugars. Even if your fasting blood sugar is 90 mg/dl, a bowl of oatmeal with skim milk, walnuts, and some berries will yield blood sugars of 150-200 mg/dl in many people.

Cheerios yields shocking blood sugars. 200+ mg/dl is not uncommon in non-diabetics. (Diabetics have 250-350 mg/dl.)

Fruits like apples and bananas increase blood sugar to 130 mg/dl or higher.

Odd symptoms, such as mental "fog," fatigue, and a fullness in the head, are often attributable to high blood sugars.

A subset of people with lipoprotein(a) can have wildly increased blood sugars despite their slender build and high aerobic exercise habits.


Once you identify the high blood sugar problem, you can do something about it. The best place to start is to reduce or eliminate the sugar-provoking food.

The LDL-Fructose Disconnect

26. February 2010 William Davis (8)
I believe that we can all agree that the commonly obtained Friedewald LDL cholesterol (what I call "fictitious" LDL cholesterol) is wildly inaccurate. 100%--yes, 100% inaccuracy--is not at all uncommon.

This flagrant inaccuracy, unacceptable in virtually every other discipline (imagine your airplane flight to New York lands in Pittsburgh--close enough, isn't it?), is highlighted in the University of California study by Stanhope et al I discussed previously.

32 participants consumed either a diet enriched with either fructose or glucose. Compared to the effect of glucose, after 10 weeks fructose:

Increased LDL cholesterol (calculated) by 7.6%

Increased Apoprotein B (a measure of the number of LDL particles) by 24%

Increased small dense LDL by 41%

Increased oxidized LDL by 12.6%


In other words, conventional calculated LDL substantially underestimates the undesirable effects of fructose. The divergence between calculated LDL and small LDL is especially dramatic. (By the way, this same divergence applies to the studies suggesting that calculated LDL cholesterol is reduced by low fat

Is health the absence of disease?

30. September 2007 William Davis (2)
It sounds like a word game, but is health the absence of disease?

In other words, if you're not sick, you must be well. If you don't have cancer, heart disease (overtly, that is, like angina and heart attack), the flu, diarrhea, fevers, pain someplace . . . well then, you must be well.

Of course, most of us would disagree. You can be quite unhealthy yet have no overt, explicit disease. Yet this is the philosophy followed in conventional medicine when it comes to many aspects of health.

With regards to heart disease, if you have no chest pain or breathlessness, you don't have heart disease. "Oh, all right, we'll perform a stress test to be sure." Track Your Plaque followers, as well as former President Bill Clinton, recognize the enormous pitfalls of this approach: It fails to identify the vast majority of hidden heart disease. In heart disease, the apparent lack of overt, sympatomatic "disease" does NOT equal the true absence of disease, even life-threatening.

How about nutritional supplements? Vitamin D is a perfect example. Blood levels of vitamin D of 10 ng/ml--profound deficiency--are common, yet people feel fine. Beneath the surface, blood sugar rises because of poor insulin response, hidden inflammatory responses are magnified, HDL is lower and triglycerides are higher, coronary plaque grows at an accelerated rate, colon cancer activity is heightened . . . Though you feel fine.

Can an abnormal "endothelial response" be present while you feel fine? You bet it can. This refers to the abnormal constrictive behavior of arteries that is present in many people who have hidden coronary plaque or risk for coronary plaque, but is entirely beneath consciousness.

How about a triglyceride level of 200 mg/dl, fatally high from the Track Your Plaque experience? (We aim for <60 mg/dl.) This is typical in people who follow the diets endorsed by agencies like the American Heart Association and the American Diabetes Association, organizations too eager to keep the money flowing from corporate sponsors and thereby offer us their advice based more on politics and less on health. Triglyceride levels of 200 mg/dl cause no symptoms.


At so many levels, the absence of disease is NOT the same as health. Health is something that is expressed by, yes, feeling good, but it's also meas diets--While calculated LDL may indeed be reduced, small LDL goes way up, a striking divergence.)

This is yet another reason to not rely on this "fictitious" LDL cholesterol value that, inaccuracies notwithstanding, serves as the foundation for a $27 billion per year industry.

"I dream about bread"

25. February 2010 William Davis (14)
Marion sat in my office, sobbing.

It had been 4 weeks since the last piece of bread, bagel, or bun had passed her lips.

"I can't do it! I just can't do it! I've tried to eliminate wheat, but it's making me crazy. I'm having dreams about bread!"

Yes, Timmy, such dark corners of human behavior are truly unveiled by removing wheat from the diet. (See the previous Heart Scan Blog post, Wheat withdrawal.)

This is a real phenomenon: Wheat is the crack cocaine of the masses. Maybe you don't exchange $100 bills in dark corners of an inner city crack house, but I'll bet you paid $3.99 for your latest fix of French bread.

Just in the last 2 weeks, people in my office who have eliminated wheat have experienced:

14 lbs weight loss in 14 days

Increased mental clarity, reduced moodiness, deeper sleep

70% reductions in small LDL

More than 300 mg/dl reductions in triglycerides

Relief from chronic scalp rash


I could go on.

All the while, the USDA, the American Heart Association, the American Diabetes Association, the American Dietetic Association, the Surgeon General's Office all advise you to eat more "healthy whole grains."

70% of people (NOT 100%, but the majority) will experience unexpected health benefits by eliminating this corrupt, unphysiologic product called wheat from their diet.

You won't know until you try.

Prototypical Lipoprotein(a)

25. February 2010 William Davis (23)
Here's the prototypical male with lipoprotein(a):



Several features stand out in the majority of men with lipoprotein(a), Lp(a):

Slender--Sometimes absurdly so: BMIs of 21-23 are not uncommon. These are the people who claim they can't gain weight.

Intelligent--Above average to way above average intelligence is the rule.

Gravitate to technical work--Plenty of engineers, scientists, accountants, and other people who work with numbers and/or technical details are more likely to have Lp(a).

Enjoy high levels of aerobic performance--I tell my Lp(a) patients that, if they want to see a bunch of other people with Lp(a), go to a marathon or triathlon. They'll see plenty of people with the pattern among the aerobically-elite.

Are rabid fans of Star Trek.


Okay, I made the last one up. But the rest are uncannilly true, shared by the majority (though not all) men with Lp(a).

Why? I can only speculate that the gene(s) for Lp(a) are closely linked to gene(s) for intelligence of a quantitative kind and some factor that enhances aerobic performance or yields a desirable emotional state with exercise.

Oddly, the same patterns tend not to occur in women in Lp(a). I have yet to discern a personality or body configuration phenotype among the ladies.

Gastric emptying: When slower is better

20. February 2010 William Davis (18)
When it comes to the Internet and Nascar, speed is good: The faster the better.

But when it comes to gastric emptying (the rate at which food passes from the stomach and into the duodenum and small intestine), slower can be better.

Slower transit time for foods passing through the stomach leads to lower blood sugar, lower blood glucose area under-the-curve (AUC), i.e., reduced blood glucose levels over time. Lower postprandial (after-eating) blood sugars can reduce cardiovascular risk. It can lead to a reduction in net calorie intake and weight loss.

Strategies that can slow gastric emptying include:

--Minimizing fluids during a meal--Drinking a lot of fluids, e.g., water, accelerates gastric emptying by approximately 20%.

--Cinnamon--While the full reason to explain Cassia cinnamon's blood glucose-reducing effect has not been completely worked out, part of the effect is likely to due slowed gastric emptying. Thus, a 1/4-2 teaspoons of cinnamon per day can reduce postprandial blood sugar peaks by 10-25 mg/dl.

--Vinegar--Two teaspoons of vinegar in its various forms slows gastric emptying. The effect is likely due to acetic acid, the compound shared by apple cider vinegar, white vinegar, red wine vinegar, Balsamic vinegar, and other varieties.

--Increased fat content--Fat is digested more slowly and slows gastric emptying time, compared to the rapid transit of carbohydrates.

Not everybody should slow gastric emptying. Diabetics with a condition called diabetic gastroparesis should not use these methods, as they can further slow the abnormal gastric emptying that develops as part of their disease, making a bad situation worse.

However, in the rest of us with normal gastric emptying time, a delay in gastric emptying can reduce blood sugar and induce satiety, effects that can work in your favor in reducing cardiovascular risk.

Summer in Wisconsin

25. September 2007 William Davis (10)
It's been a glorious summer in Wisconsin.

For weeks straight, we've enjoyed bright, sunny days with temperatures in the 70s and 80s. Even now, in late September, our windows are wide open and the days are warm and sunny. Yesterday, it was 84 degrees. Yes, it did rain for a stretch of about 10 days in August, but for the most part it has been a wonderfully sunny summer.

So it struck Andy as a big surprise when we checked his 25-OH-vitamin D3 blood level: 15 ng/ml--severe deficiency.

"I don't get it. I'm outside almost every day. Look at me! How do you think I got this tan?"

Indeed, Andy sported a nice dark tan over exposed areas.

In fact, Andy was among the dozen or so people this month with deficiencies of this magnitude.

Deficiency is not the exception; it is the rule. Of course, if Andy's blood level is at the level of severe deficiency in September, he will only trend lower over the next few weeks and months. He would likely have shown vitamin D blood levels of <10 ng/ml by January--profound deficiency.

With deficiency of this severity, Andy has been exposing himself to risk for prostate and colon cancer, diabetes and metabolic syndrome, low HDL, higher triglycerides, higher blood sugars, higher C-reactive protein, osteoporosis, arthritis . . .

Correcting the deficiency is easy. But, as you can see, getting sun is not always the answer. Even with an active, outdoor lifestyle and a tan, Andy still remained significantly deficient. Oral replacement with vitamin D3, or cholecalciferol, is an absolute necessity.

Wacky statin effects

23. September 2007 William Davis (18)
In general, I try to exhaust possibilities before resorting to the statin drugs. But we still do use them, both in general practice and the Track Your Plaque program.

There are indeed a number of ways to reduce, minimize, or eliminate the need for these drugs. For instance, if your LDL is 150 mg/dl but comprised of 90% small particles, then a reduction in wheat and other high-glycemic index foods, weight loss, fish oil, and niacin can yield big drops in LDL.

But sometimes we need them. Say LDL is 225 mg/dl and is a mix of large and small. Exercise, weight loss, niacin, oat bran, ground flaxseed, Benecol, etc. and LDL: 198 mg/dl. Alright, that's when statins may be unavoidable. There's also many people who are not as motivated as all of us trying to reverse heart disease. Some just want the easy way out. Statins do indeed provide that option in some people.

So in truth, we end up using these drugs fairly regularly. How common are muscle aches and fatigue? In my experience, they are universal . If taken long enough, or if high doses are used, muscle complaints are inevitable. Most of the time, thankfully, they're modest and often relieved with a change in drug or with coenzyme Q10 supplementation.












But there's more to statin side effects than muscle aches. Among the wacky effects that I have witnessed with statin drugs:

--Insomnia-especially with simvastatin (Zocor and Vytorin). Insomnia can be quite severe, in fact, with difficulty sleeping more than 3-4 hours a night.

--Bone aches--I don't know why this happens, unless it's somehow related to muscle aches. I've seen this with all the statins, but more commonly with Crestor.

--Memory impairment--a la Dr. Duane Graveline's wacky book, Lipitor: Thief of Memory. I've seen this with Lipitor, though it's uncommon, and less commonly with simvastatin (Zocor, Vytorin).

--Diarrhea--More common with Zetia and Vytorin (which contains Zetia), because of the inhibition of bile acid reabsorption.

--Migraine headaches--This I certainly do not understand, but the cause-effect relationship is undoubtedly true in an occasional person.

--Low libido--In men more than women, though it may be more due to men being more willing to admit to it.

--Increased appetite--Rare, though I've seen dramatic instances.

--Tinnitus--Ringing in the ears. I've only seen it with Lipitor and Zocor.


In their defense (and in general I am no defender of the drug manufacturers), most people do fine with statin drugs, though the majority do eventually require coenzyme Q10 in my experience. By the way, coenzyme Q10 can be an indispensable aid to help tolerate statin agents.

I'd love to hear about your wacky experiences.

Track Your Plaque goes global

21. September 2007 William Davis (3)
I don't use this space to toot my horn (at least I don't too often), but we were looking at the listings of our viewers and members. I was surprised to learn that we now have Track Your Plaque followers in 15 different countries around the world!

We have members from Europe including England, Ireland, Switzerland, Belgium, and the Czech Republic. We have members from as far away as South Africa, Australia, India, Singapore, Thailand, and China.

I see the entire Track Your Plaque process as a grand experiment. Never before in history has a system of health been delivered via a communication medium like the web. The internet provides more interactivity than television, it's more fluid than a book, it's more dynamic and evolves more rapidly than a face-to-face interaction. While we cannot be hands-on over the internet, we can still deliver all the crucial information and, hopefully, the knowledge on how to get it done.



Track Your Plaque is part of an even grander experiment: The movement to shift control over health away from the medical system, doctors, and hospitals and back to individuals. When you think about it, the idea that "health" (more acurately sickness) should be managed by people and institutions (e.g., hospitals and insurance companies) outside of the individual is a 20th century concept. I predict that this notion will also become a relic of the 20th century.

Someday, we will look back and laugh at the folly of the 20th century style of paternalistic health care. Perhaps it was a necessary step in the sequence to transform health to a better system that returns control to the individual. But it's clearly time for a change.

Track Your Plaque is an example of the extraordinary power that can be taken by a lone individual with only minimal assistance of a health care provider. I see Track Your Plaque members who understand heart disease (at least the coronary disease aspect) far better than 95% of my cardiology colleagues, 100% of my internal medicine and family practice colleagues. Physicians maintain a role, but their role has shrunk and receded. They should be facilitators of success in health, educators, a resource to turn to when we need help. It's not that way today. It will be in 50 years.

But, right now, we can get started on this wonderfully self-empowering--liberating-- movement by participating in this global experiment known as Track Your Plaque, the program with the goofy name that has the potential to usurp and unravel this enormous institutionalized system of health care the world has created.

Go to your corners

20. September 2007 William Davis (4)
There's a heated debate being waged on the Heart Hawk Blog

Dr. Melissa Walton-Shirley authored an editorial entitled It Should Be the Right of All Americans to Have Primary Percutaneous-Based Intervention for Acute Coronary Syndrome .

Heart Hawk's response:

Dr. Walton-Shirley feels the best use of time, talent, and money is to build more cath labs and train more people in how to use them so that IF you have a heart attack, you stand a better chance of being pulled back from the brink of death. Unfortunately, you have to first let people get so sick that they are about to die. My position is to use those same resources to prevent such disasters from happening in the first place. Take your pick. You cannot spend the money twice.

I am no stranger to "direct angioplasty," meaning performing immediate coronary angioplasty (with stenting) for heart attack. Since 1990, I have personally performed hundreds, perhaps over a thousand of these procedures, particularly when I was younger and my practice was procedurally-focused. But, after a few years, I quickly recognized the futility of this approach. Yes, you might have aborted a heart attack ,perhaps even saved a life at the brink of death. But wouldn't it have been better to have prevented the entire episode in the first place?

In my mind, putting a cath lab on every corner, as Dr. Walton-Shirley suggests, is like having a fire truck on every street to prevent a house from burning down. It's an enormously expensive proposition that provides no incentive to prevent fires. Why not spend the money on preventing the fires?

Expanding access to cath lab procedures is putting the fox in the henhouse. Procedures yield money--big money--for hospitals and cardiologists. Guess what happens when you build facilities that exceed the need? Yes--the number of procedures grows, whether or not they were needed.

In my view, Dr. Shirley-Walton's opinions are symptomatic of the profit-driven, procedurally-focused quick-fixes that divert money that would be far better spent on effective dissemination of preventive practices.