I don't care about hard plaque!

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

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

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!

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

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!

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!

A curious case of coronary plaque regression and progression

John received a coronary stent in 2003 following a small heart attack. The artery causing the heart attack was a diagonal artery, a branch of the important left anterior descending coronary artery (in the front of the heart). His cardiologist at the time advised him, "Take Lipitor and we'll do stress tests every year. Come back if you have any more chest pain." That was the full extent of John's preventive care.

He came to me for a second opinion and, naturally, we enrolled him in our program. We began by obtaining a CT heart scan score, though we had to exclude the stented diagonal artery. His score: 471. At age 51 and physically active, John had 7 additional abnormal lipoprotein patterns identified. We counseled John on better approaches to food choices, his weight target, fish oil, and correction of all lipoprotein patterns.

Two years later, John's repeat heart scan score: 511 . John was initially disappointed with the increase. But a closer look yielded something entirely different: the right coronary artery and circumflex (no stents) showed 20-30% reduction in their scores. The increase in total score was entirely due to substantial increase in score just outside the stent, in the left anterior descending artery. In other words, all of the increase in score was due to growth of a plaque at the mouth of the stent in the diagonal artery.

This is curious: profound regression of plaque with a big drop in score in the "un-instrumented" arteries, but tremendous growth of plaque and an increase in score in the "instrumented", or stented, artery, all in the same person's heart.

I don't know how controllable this specific situation in the left anterior descending and stented diagonal will be, and I'm unaware of any specific strategies to impact on this situation. The whole world of tissue growth within or around stents is littered with high hopes followed by failures. The drug-coated stents have been the only partial solution to this problem, though that's precisely the sort of stent John received.

Is there a message here? The message I take from this is that you and I should work like mad to keep from receiving a stent. Once they're implanted, we have less control over our coronary future. We can indeed regress ("reverse") coronary plaque. But we may not be able to regress the sort of tissue that grows in response to a stent implantation.

When is a heart scan score of 400 better than 200?

Imagine two people.

Tom is a 50-year old man. Tom's initial heart scan score is 500--a bad score that carries a 5% or more risk for heart attack per year.

Harry is also 50 years old. His heart scan score is 100--also a concerning score but not with the same dangers of Tom's much higher score.

Tom follows a powerful heart disease prevention program like the Track Your Plaque program. He achieves the 60:60:60 lipid targets; chooses healthy foods; takes fish oil; raises his blood vitamin D level to >50 ng/ml, etc. One year later, Tom's heart scan score is 400, a 20% reduction from his starting score.

Harry, on the other hand, doesn't understand the implications of his score. Neither does his doctor. He's casually provided a prescription for a cholesterol drug by his doctor but nothing else. One year later, Harry's heart scan score is 200, a doubling (100% increase) of the original score.

At this point, we're left with Tom having a score of 400, Harry with a score of 200. That is, Tom has twice the score, or 200 points higher, compared to Harry. Who's better off?

Tom is better off. Even though he has a significantly higher score, Tom's plaque is regressing. It is therefore quiescent with its components being extracted, inflammation subsiding, the artery is in a more relaxed state, etc.

Harry's plaque, in contrast, is active and growing: inflammatory cells are abundant and producing enzymes that degrade supportive tissue, excessive constrictive factors are constantly causing the artery to pinch partially closed, fatty materials are accumulating and triggering a cascade of abnormal responses.

This is therefore a peculiar situation in which a higher score is actually better than a lower score. It reflects the power of adhering to a preventive program. It also demonstrates how two scans are better than one because they show the rate of increase given a particular preventive approach.

Warning: Your cardiologist may be dangerous to your health!

Warren had a moderately high LDL cholesterol for years and took a statin drug sporadically over the past 7 years. Finally retired from a successful real estate investment business, he had a CT heart scan to assess his heart disease status.

Warren's score: 49. At age 59, this put him in the lowest 25%, with an estimated heart attack risk of 1% per year or less--a relatively low risk. At this heart scan score, the likelihood of an abnormal stress test was less than 3%, or a 97% likelihood of a normal stress test. Most would argue that a stress test would be unproductive, given its low probability of yielding useful information. In other words, there would be a 97% probability of normal blood flow through Warren's coronary plaque, and less than 3% likelihood that a stent or bypass surgery would be necessary.

Warren was also without symptoms. He hiked and biked without any chest discomfort or breathlessness. A prevention program like Track Your Plaque to gain control over future coronary plaque growth was all that was necessary and Warren had high hopes for a life free of heart attack and major heart procedures.

Then why did he go through a heart catheterization?

Warren did indeed undergo a heart catheterization on the advice of his cardiologist. When I met Warren for another opinion, it became immediately obvious that the heart catheterization was completely unnecessary. Then why was this invasive procedure done? There can only be a few reasons:

--The cardiologist didn't truly understand the meaning of the heart scan score. "We need to do a 'real' test."

--The cardiologist was terrified of malpractice risk for underdiagnosing or undertreating any condition, no matter how mild.

--The cardiologist wanted to make more money. Talking about heart disease prevention is a money-saving, not a money-making, approach.

Regardless of which of the three motivations was at work here, they're all inexcusable. A disservice was done to this man: he had an unnecessary procedure, incurred some risk of complication in the process, and gained nothing.

An ignorant or profit-seeking cardiologist is worse than the unscrupulous car mechanic who, when presented with an unknowing car repair customer, proceeds to replace the carburetor and rebuild the engine when a simple 5-minute adjustment would have taken care of the problem.

I estimate that no more than 10% of my colleagues follow such practices, but it's often hard to know who is in that 10%. Ask pointed questions: Why is the catheterization necessary? What is the likelihood of finding information useful to my health? What are the alternatives? (By the way, the emerging CT coronary angiograms can be a useful alternative in some situations like this.)

Track Your Plaque is your source for credible information. Be well armed.

I don’t have high blood pressure!

Art undeniably had high blood pressure.

At age 53, he had all the “footprints” of high blood pressure that’d been present for at least several years: abnormal patterns by EKG, abnormally thick heart muscle, and an enlarged aorta by an echocardiogram. These sorts of changes require many years to develop. Art’s blood pressure was 140/85 sitting quietly in the office.

“That’s about what my primary care doc gets, too. Whenever it’s high, he takes it again after a few minutes and it always comes down.”

Art tried to persuade me that his blood pressure was high today only because of the traffic on the way into the office. When I dismissed this as a cause, he insisted that stress he’d been suffering because of his teenage son was the cause. “I just know I don’t have high blood pressure!”




Who’s right here? Well, Art is not here to defend himself. But one fact is crystal clear: you cannot develop complications of high blood pressure unless you truly have high blood pressure!

In other words, Art’s abnormal changes in heart structure (thickened heart muscle and enlarged aorta) are serious changes that develop only with years and years of sustained blood pressure at least as high as the one in the office. His blood pressure almost certainly ranged much higher at other times, particularly during stressful situations like waiting in the check-out line at the grocery store, watching a suspenseful TV show, petty irritations at his job, and on and on.

Blood pressure does not have to be high all the time to generate complications of high blood pressure. It can be sporadic, variable, even occasional. Clearly, sustained high blood pressure is the worst situation that creates adverse consequences more quickly. But blood pressure that wavers from low to high only some of the time can still, given sufficient time, cause the very same unwanted effects.

Control of blood pressure is crucial to your coronary plaque control program. Blood pressure may be boring: not as exotic, say, as lipoproteins, and not as fun as talking about nutritional supplements. But neglect blood pressure issues and you will not gain full control over coronary plaque growth—-your heart scan score will increase.

Watch for an upcoming Special Report on the Track Your Plaque Membership website, a full detailed discussion of how to recognize when blood pressure is an important issue, along with a full discussion of nutritional methods to reduce it, often sufficient to minimize or eliminate the need for medication.
To track small LDL, track blood sugar

To track small LDL, track blood sugar

Here's a trick I learned after years of fussing over people's small LDL.

To gain better control over small LDL, follow blood sugars (blood glucose).

When you think about it, all the foods that trigger increases in blood sugar also trigger small LDL. Carbohydrates, in general, are the most potent triggers of small LDL. The most offensive among the carbohydrates: foods made with wheat. After wheat, there's foods made with cornstarch, sucrose (table sugar), and the broad categories of "other" carbohydrates, such as oats, barley, quinoa, sorghum, bulghur, etc.

Assessing small LDL requires a full lipoprotein assessment in which small LDL particles are measured (NMR, VAP, GGE). Not the easiest thing to do in the comfort of your kitchen.

However, you can easily and now cheaply check your blood sugar. Because blood sugar parallels small LDL, checking blood sugar can provide insight into how you respond to various foods and know whether glucose/small LDL have been triggered.

Here's how I suggest patients to do it:

1) Purchase an inexpensive blood glucose monitor at a discounter like Walmart or Walgreen's. You can buy them now for about $10. They're even sometimes free with promotional offers. You will also need to purchase lancets and test strips.

2) With a meal in question, check a blood sugar just prior to the meal, then again 60 minutes after finishing the meal. Say, for example, your pre-meal blood sugar is 102 mg/dl. You eat your meal, check it 60 minutes after finishing. Ideally, the postprandial (after-meal) blood sugar is no more than 102 mg/dl, i.e., no higher than pre-meal.

Perhaps you're skeptical that oatmeal in skim milk with walnuts and raisins will do any damage. So you perform this routine with your breakfast. Blood sugar beforehand: 100 mg/dl. Blood sugar 1 hour post: 163 mg/dl--Uh oh, not good for you. And small LDL will be triggered.

This approach is not perfect. It will not, for example, identify "stealth" triggers of blood sugar and small LDL like pasta, for the same reasons that pasta has a misleadingly low glycemic index: sugars are released slowly and not fully evident with the one-hour blood sugar.

Nonetheless, for most foods and meals, tracking your one-hour postprandial blood sugar can provide important insight into your individual susceptibility to sugar and small LDL-triggering effects.

Comments (28) -

  • Anonymous

    12/23/2009 8:05:52 PM |

    Would glycated hemoglobin also be an accurate way to track small LDL? Just thinking it may be easier to get that tested, which should give a decent account of sugar intake for the past several months, than measure glucose daily. Although I'm not sure if it correlates to small LDL as well.

    But if so, what is an optimal glycated hemoglobin for non-diabetic types?

  • TeDWooD

    12/23/2009 10:59:14 PM |

    I liked what you put about the blood sugar being released slowly in meals like pasta. When you take you blood pressure test you should be very relaxed as well.
    I have wrote about blood pressure highs and lows in my blog, and what foods are recommended. You can find it here:
    http://thesuccessfulmale.blogspot.com/2009/11/stop-blood-pressure-highs-and-lows.html

  • Jim Purdy

    12/24/2009 1:26:58 AM |

    I have another tracking device which I like much better than my blood glucose meter

    A finger-tip pulse oximeter!

    I sometimes tend to have tachycardia and very unpleasant chest pains, and I have often used my finger-tip pulse oximeter to see what's going on.

    Until a few months ago, I would often have chest pains, emergency room visits, and one 9-1-1 ambulance call because I thought I was having heart attacks.

    All those ER visits got expensive, especially when the hospitals insisted on keeping me for 2-3 days each time to run zillions of dollars of tests.

    Often those attacks followed a greasy meal with something like bacon double cheeseburgers, and I "knew" that the fat was the culprit.

    However, after several low-carb bloggers directed my attention to the buns instead of the meat, I used my pulse oximeter to identify the problem foods.

    Yes, indeed, it was carbs, especially things like bread and -- much to my surprise -- ordinary breakfast cereals. I still miss my sandwiches and my Corn Chex, but I don't miss all those emergency room visits.

    I love my finger-tip pulse oximeter!

  • DrStrange

    12/24/2009 2:05:57 AM |

    Important to note that blood sugar monitors for home use are VERY approximate and are only accurate by plus/minus 20%.  Also, may vary widely between two readings taken seconds apart. I usually take 3 readings, bang bang bang, toss out any far outlier and average the what's left.  Still approximate but it makes me feel like it is more accurate ;)

  • Anonymous

    12/24/2009 2:20:43 AM |

    Wow, and this is news:

    http://news.bbc.co.uk/1/hi/health/8426591.stm

    -just in

    Another 'bad' cholesterol linked to heart disease found

  • Anne

    12/24/2009 8:15:49 AM |

    Dear Dr Davis,

    You have been writing about Lp(a) for years....why is it that the so called 'mainstream' medical profession appears only to have discovered it very recently ? Here in today's BBC news: 'Another 'bad' cholesterol linked to heart disease found':  http://news.bbc.co.uk/1/hi/health/8426591.stm

    Happy Christmas !
    Anne

  • vin

    12/24/2009 9:54:25 AM |

    Dr. Davis.
    If I am not mistaken I remember you saying that oats contributed to forming large LDL particles and not the small LDL.

    I am unable to find the article. Maybe you can reproduce that article.

  • Kurt

    12/24/2009 1:05:14 PM |

    I did this per your previous suggestion. I took one-hour and two-hour postprandial readings. My blood sugar never rose above 122, and was back down near fasting level after two hours. My diet contains a moderate amount of whole grains but almost no sugar and no refined grains.

    You could clearly see the difference between a meal of, say, salmon and vegetables, which barely raised my blood sugar above fasting, and one of chicken and brown rice, which would raise it to 110 - 120. It was a useful tool for assessing my diet.

  • Chloe

    12/24/2009 7:02:48 PM |

    Good information.  I have no health insurance and make too much money to qualify for public assistance, yet do not make enough to pay for many (close to all) tests.  I do participate in GrassRootsHealth for vitamin D (level from 7 to now 94), so I use anything at home I can to monitor what I can.

    The ReliOn Micro glucometer from Wal-Mart is a great little meter. It runs $12 for the kit which includes a few lancets and a lancing device.  The strips are the "sippy" kind and require the smallest sample on the market, just a dot of blood, and they are the least expensive strips on the market at $21.75 for 50 count.  I use them occasionally to track my own BG levels.

    Reason I purchased the meter?  The story is familiar:  Too many grain carbs recommended as the "good diet" which led to obesity and then diabetes.  That was my story, too, but the meter was purchased for my cat, Kipper.  The vets are in on this BS too.  All that expensive Eukanuba, Science Diet, vet prescribed grain diet and now my baby is a diabetic.  I regret listening to that for years.  

    I prick his ear twice a day, give him 1U of Levemir insulin, and then I check myself, occasionally.  Grains very, very bad.  Protein and fat very, very good.  Kipper's and my blood glucose levels are normal now, but he still needs insulin.  I am currently diet controlled.  Glad to know my diet control yields heart-healthy effects, too.

    Recently I had a yen for cherry tomatoes and overindulged.  We are talking about a cup more than usual.  Checked by meter this produced a 15 point increase over normal.  

    That cheap but reliable meter from Wal-Mart, if used (sometimes we turn off the internal prompt to check because we do not want to check) is a great tool and for me now a multipurpose tool.

  • Anonymous

    12/24/2009 7:29:10 PM |

    I'm concerned regarding this statement:

    "And the broad categories of "other" carbohydrates, such as oats, barley, quinoa, sorghum, bulghur, etc."

    In your Cheerios post

    http://heartscanblog.blogspot.com/2008/04/cheerios-and-heart-health.html

    you have actually touted oats by showing a study that pit it against wheat and it was shown to actually reduce LDL; this makes sense considering oats are a source of soluble fiber.

    "High-fiber oat cereal compared with wheat cereal consumption favorably alters LDL-cholesterol subclass and particle numbers in middle-aged and older men"

    http://www.ajcn.org/cgi/content/full/76/2/351

    Heres also a study that showed improved blood glucose response at breakfast that followed an evening in which barley was consumed:

    http://www.nature.com/ejcn/journal/v60/n9/abs/1602423a.html

  • Anonymous

    12/24/2009 9:28:39 PM |

    Noting that your readership is growing internationally, it might be useful for people to understand that the units of blood test measurement that are used quite frequently here in this blog are different in the US from most other places worldwide. These conversion factors may prove useful:

    Cholesterol (total,LDL,HDL): 38.7 (eg HDL of 60 mg/dl (US) is 1.55 mmol/L elsewhere)
    Triglycerides: 88.6 (eg reading of 60 mg/dl (US) is 0.68 mmol/L elsewhere)
    Blood Sugar: 18 (eg FBS of 90 mg/dl (US) is 5 mmol/L elsewhere)

  • Dr. William Davis

    12/24/2009 11:36:27 PM |

    Anon--

    The drawback of HbA1c is that the feedback is not immediate. You cannot use it to gain feedback on a particular food or behavior.

  • Dr. William Davis

    12/24/2009 11:38:04 PM |

    Chloe--

    I, too, learned this lesson with my pets. I have two Boston terriers who gained weight little by little on the cornstarch-first ingredient dog food I was feeding them. Now, choosing dog foods that are principally meat has finally allowed them to control their weight.

    I'm impressed with your cat's blood sugar checking!

  • Dr. William Davis

    12/24/2009 11:38:29 PM |

    Thanks for the conversion factors, Anon.

  • Vladimir

    12/25/2009 12:45:33 AM |

    Dr. Davis, I'm wondering if it's the total blood sugar that correlates with LDL, or the rise in blood glucose.  So, for example, if one has a fasting level of 95 and rises to 120 after a meal, is that better/worse than starting at 75 and rising to 105 -- in terms of increase in LDL?

  • Anonymous

    12/25/2009 7:11:36 PM |

    Jim Purdy,
    Can you give some details on how you use your fingertip pulse oximeter to identify problem foods?  What kind of readings do you see and when?  How do the readings correlate with high or low blood sugar?

    Thanks!

  • Peter

    12/26/2009 1:58:05 PM |

    Chloe,
       A friend of mine started giving his diabetic cat low carb catfood and the cat, now fine, went into insulin shock because her blood sugar had returned to normal unbenounced to my friend. Now, she is fine on no more insulin shots.

  • Jim Purdy

    12/26/2009 3:19:53 PM |

    Anonymous asked me:
    "Jim Purdy, Can you give some details on how you use your fingertip pulse oximeter to identify problem foods? What kind of readings do you see and when? How do the readings correlate with high or low blood sugar?"

    Sorry, I wasn't very clear. I use my pulse oximeter to track my pulse rate, which could also be done by a much cheaper blood pressure monitor. I use my pulse oximeter because I have it, and it is conveniently small.

    My pulse readings do correlate very well with my glucose meter readings for carbs, but  I don't really use it to directly track blood glucose, even though I have Type 2 diabetes. My most bothersome health symptoms are tachycardia and chest pain, and my pulse oximeter has helped me identify the problem foods, which are carbs and caffeine.

    As I said, my pulse readings correlate very well with my glucose meter responses for carbs, but my pulse oximeter also has the advantage of showing the effect of caffeine, which doesn't show up with my glucose meter.

    Also, my pulse oximeter shows my body's response almost immediately, whereas my glucose mete may take an hour or more.

    Thus, for me, with my concerns about tachycardia and chest pains, my pulse oximeter is much more useful than my glucose meter.

    Lest you think I got off topic, let me repeat that my pulse readings correlate closely with glucose readings, but much quicker.

    And again, a blood pressure monitor would give the same pulse information more cheaply.

    All this may apply only to me, or to diabetics who also have tachycardia. Everybody is different.

  • Anonymous

    12/26/2009 8:07:42 PM |

    Easily I assent to but I contemplate the brief should secure more info then it has.

  • Chloe

    12/27/2009 12:17:02 AM |

    Peter--Kip is on low carb, wet cat food once he was diagnosed in April (his 14th birthday!).  The vet wanted him on a prescribed mid-level carbohydrate food and an unbelievable amount of Vetsulin.  After finding www.felinediabetes.com, I started testing him, switched his food, and switched his insulin.  His BG levels run 40 to 120 (sometimes higher when he has a flare of pancreatitis) on 1U twice a day.  I have learned to keep shooting even when he runs normal sugars.  Congratulations to your friend for getting diet control.  I have been at this about 8 months with him and I am not sure he is going to go without insulin.  Still I am hopeful.  He has helped me on my diet though.  I can't cheat (really cheating myself) on mine anymore because I feel guilty about him AND since he often helps himself to my food I do not have anything he can't.  The household is strictly low carbohydrate: Meat, fat, and green vegetables. Glad to hear a good story about a cat becoming diet controlled. Human and feline we are all healthier these days.

  • Grandma S.

    12/27/2009 2:38:22 AM |

    Dr. Davis-How does the blood sugar rise correlate with taking Niacin and LDLs?  It raises my blood glucose levels, raises my HDL, and lowers my Trigl.  Thank you!

  • Anonymous

    12/27/2009 4:25:26 AM |

    Thanks Jim Purdy.  Just to clarify, exactly what are you seeing on your pulse oximeter when a food is "bad?"  For example, what is a good pulse reading and what is it when it is bad?  Do you track how long it takes to return to baseline?

    It is very interesting that it correlates with your glucose levels.  Are glucose levels high when your pulse is high and vice versa?  Even though the device is more expensive than a glucose monitor, you don't have the ongoing expense of the strips and of course don't have to stab yourself!  Of course a pulse oximeter wouldn't provide enough information for someone needing to treat diabetes but for those just curious about the effect of foods, it might suffice.

  • karl

    12/27/2009 4:42:40 AM |

    The question become is the small LDL the base risk factor or is it blood sugar (fructose?) .

  • Anonymous

    12/29/2009 3:53:23 PM |

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  • Anonymous

    1/17/2010 7:28:51 PM |

    I would also like further information about oats, I remember other posts in this blog that show oats as beneficial for reducing small LDL

  • Anonymous

    1/29/2010 7:33:32 AM |

    "Because blood sugar parallels small LDL, checking blood sugar can provide insight into how you respond to various foods and know whether glucose/small LDL have been triggered."

    I am very interested in pursuing this, but do you have a cite for this? I googled up small LDL particle size and didn't see anything about blood sugar being a good proxy for that, although I'm sure I missed seeing a lot.

    Also, I'm interested in more information on the effect of oats. I, too, have been under the impression that it is a healthy choice.

  • buy jeans

    11/3/2010 10:24:34 PM |

    However, you can easily and now cheaply check your blood sugar. Because blood sugar parallels small LDL, checking blood sugar can provide insight into how you respond to various foods and know whether glucose/small LDL have been triggered.

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