Take a walking vacation

If you're planning a vacation, why not consider a walking vacation?

The concept is really taking off. All you need is a pair of comfortable shoes and an interesting locale. More and more services are popping up to help you plan fun and interesting destinations and itineraries. One such catalog can be found at http://walking.about.com/od/tours/a/walkingvacation_3.htm

Lengthier walks may require some advance planning and toting some supplies. Don't forget the water!

From a health viewpoint, a walking vacation sure beats the heck out of a cruise that packs on 12 pounds of extra weight from the 24-hour a day buffet. If you're in the midst of a weight loss effort, several hours of walking through interesting locales and scenery can make it effortless.

There's loads of neat places to visit from a walker's perspective. One interesting website is www.waterfallwalks.com that lists trails that provide spectacular views of waterfalls.

Another variation on this theme is biking vacations. My wife and I are trying to set the time aside for a biking tour of wineries in the French countryside. That's our kind of multi-tasking!

"Expanded indications for implantable defibrillators"

So reads the headline on a magazine I received recently (along with thousands of my colleagues) from a major hospital system.

It goes on to say: "In January 2005, indications for implantable cardioverter-defibrillators (ICDs) were substantially broadened [emphasis ours] to include most patients with a left ventricular ejection fraction (EF) of 35% or less. This change translates into a 2- to 3-fold increase in the number of Medicare beneficiariries eligible for ICDs."

Ka-ching!!! Hear the money piling up in the bank?

The device manufacturers are constantly churning data and lobbying for reimbursement to expand the use of their devices to more and more people. Defibrillators in particularly are generally a $25,000 to $50,000 opportunity for the device manufacturer alone, not counting the costs incurred at the hospital for implantation.

Beware. As reimbursement for stents and other procedures diminishes, expect a sudden "demand" for more and more people to get implantable defibrillators. Better yet, stay away from the whole issue by preventing your heart attack.

Get a heart scan--but then don't delay taking action!

I just came from one of the local hospitals after having performed a heart catheterization on a patient I met earlier this week.

Jack had gotten a heart scan a year ago with a score of 246, placing him in the 76th percentile. The "event" rate with this percentile rank is around 3% per year--not very high but enough to pose risk over a long period.

Jack chose to ignore his score. After all, the pressures of work at the University, maintaining his home and yard, etc. consumed all his energies. He came to my office--now one year after his scan--and told me about the chest pressure he was getting. Initially, his chest pains occurred with extended walking. In the past week, however, Jack was experiencing chest pressure with just walking 30 feet.

This pattern of increasing symptoms is called "accelerated angina", meaning that Jack was rapidly heading towards a heart attack. So I advised a heart catheterization in near future.

Jack's catheterization showed extensive plaque including a 50% blockage in the mainstem artery and 90% in the artery to the front of the heart (left anterior descending artery). Jack is going to have a bypass operation tomorrow.

What if Jack hadn't ignored his heart scan from a year ago? Well, I'd be very confident in saying that he would not be undergoing bypass surgery tomorrow.

The lesson: Don't dilly-dally on taking action to keep your plaque from growing. While it's not an emergency, it can easily become one if you choose to ignore your scan.

Feel that nudge in your back?

You feel that nudge in your back? That's your local hospitals competing for your bypass surgery business.

Just this morning while watching a morning news show, I saw three advertisements for hospital bypass surgery programs. One ad featured a man in his 50s telling his story:"The cardiologist determined immediately that I needed a triple bypass operation. My family and I are very grateful to _____ hospital!"

In what other field is failure celebrated so prominently? When I see these ads, I hear "My doctors failed to provide early detection and then prevent what became a life-threatening condition, even though heart disease is a chronic process that requires decades to develop." What if our man said instead,"I had a heart scan and my score was high. So I was shown why I had so much plaque. They then showed me how to control and even reduce the amount of plaque I had. I'm living safely and symptom-free without need for surgery or procedures."

Of course, the hospital is out $60,000-100,000 for the surgery. How else could they afford ad campaigns costing several million dollars a year? See these advertisements for what they are: Marketing generated by profit-seeking businesses competing for your dollars--lots of them.

Throw away total cholesterol!

Richard's total cholesterol without treatment was 186 mg/dl. "That's great!" his doctor declared, referring to the conventional dictum that total cholesterols less than 200 carry low risk. Several fingersticks in a mall kiosk set up by a local hospital to check total cholesterols confirmed Richard's low number.

But after Richard's unexpected hospitalization and two stents for severe coronary blockages, he demanded better answers.

Tragically, the answer was there all along: Despite a "favorable" total cholesterol, his HDL ("good") cholesterol was a miserable 32 mg (ideal >60 mg).

Total cholesterol is actually the sum total of HDL cholesterol, LDL cholesterol, with a contribution from triglycerides. That's why a low total cholesterol can conceal a low HDL.

This situation is quite common. And low HDL is accompanied by a constellation of other undesirable causes of heart disease, most notably small LDL.

Don't accept total cholesterol as your sole measure of risk. It's nearly worthless. If you live in Bangladesh or a third world country, well perhaps that's the best you can get. But if you live in the U.S. or developed world, it's absurd to rely on total cholesterol.

Smart Start not so smart




Kellogg's has crafted a campaign to support the American Heart Association featuring acress Sela Ward. Her attractive face, familiar to many TV and movie viewers, does add a comforting face to their efforts.

What's in this cereal made by the manufacturers of Pop-Tarts, Cheez-It, Rice Krispies, and Chips Deluxe cookies?

There are, indeed, some healthy ingredients: oat bran, potassium; you can even get a version made with soy protein. But there's sugar listed as the second ingredient. High-fructose corn syrup is also listed prominently. (Remember this issue? High-fructose corn syrup causes overwhelming sugar cravings, causes your triglycerides to skyrocket, and is probably among the principal food ingredients that make you obese.)

Upon detailed questioning of my patients struggling to lose weight, this and products like it are often among the "healthy" foods they've gravitated towards. We spend a great deal of time dissuading them of this idea.

A one-cup serving of Smart Start is low in fat (1 gram) but contains 43 grams of carbohydates, of which there are 14 grams of sugar. There are a meager 3 grams of fiber. To me, this sounds like a cupcake.

The Kellogg's people are exceptionally clever marketers. Partner with the American Heart Association and movie stars? Brilliant!

You should trust food manufacturer advertising about as much as you trust drug manufacturer advertising, which is to say not at all.

Kellogg's sold $10 billion dollars of food products last year. They are the world's leading producer of breakfast cereals. They are a leading producer of convenience foods: cookies, crackers, cereal bars, and frozen waffles under the brands Keebler, Pop-Tarts, Eggo, Cheez-It, Nutri-Grain, Rice Krispies, Famous Amos, and Kashi.

Can they cash in on healthy trends? They'll certainly try.

Does anybody have a normal vitamin D level?

We now routinely check everyone's vitamin D blood level at the start of the program. (The measure to obtain is 25-OH-Vitamin D3. This is not to be confused with 1,25-OH2-vitamin D3, which is a kidney function measure.)

Of the 10 people with levels drawn today, none were even close to normal levels (which we define as 50 ng/ml)--not a single one.

The majority were in the range of severe deficiency (<20 ng/ml). Only two had levels in the 30s. None had higher. (Remember: I'm talking about people in Wisconsin, a terribly sunlight-deprived area much of the year. This might not apply quite as vigorously to Florida residents or others in sun-exposed regions.)

Curiously, I've also seen several people this week who had extraordinary quantities of coronary plaque on their heart scans (scores >1000), all of whom had extremely low vitamin D levels. One of these people had fairly unimpressive lipoproteins, with very minimal abnormalities identified. (This is quite unusual, by the way.) It makes you wonder if a profound deficiency of vitamin D is sufficient to act on its own as an instigator of coronary plaque.

The more we examine the issue of vitamin D deficiency, the more fascinating it gets. I suspect we've just scratched the surface and there's a lot more to learn about this tremendously interesting nutrient. Nonetheless, with what we're seeing in our experience, I'm urging everyone to get a blood vitamin D level.

Don't believe your LDL cholesterol!

Harry's case is typical. For years, his doctor told him his LDL cholesterol of 123 mg was okay. But a heart scan score of 490 (90th percentile at age 52) made him question just where his coronary plaque came from.

Lipoprotein analysis told a very different story: His LDL particle number was 2400 nmol, meaning his trueLDL was more like 240 mg, nearly double the value of LDL obtained through his doctor. Harry had other sources of risk, too, but the LDL particle number was a clear stand-out.

Why does this happen? How can LDL cholesterol be so terribly inaccurate?

LDL cholesterols obtained in virtually all labs are not measured, they're calculated. The calculation was developed in the 1960s by Dr. Friedewald at the National Institutes of Health and therefore goes by his name (the Friedewald calculation). Dr. Friedewald derived this simple calculation to permit doctors across the U.S. to obtain LDL cholesterols, which were technically difficult to measure in those days by using measured HDL, total cholesterol and triglycerides.

Doctors were told that the only time that the Friedewald calculated LDL was inaccurate was when triglycerides exceeded 400 mg. So most family practitioners and internists still believe that calculated LDL's are, for the most part, quite accurate.

Nothing could be further from the truth. When LDL's are actually meaured, you find that LDL is rarely accurate. In fact, in our experience, inaccuracy of 30-50% is the rule, sometimes 100%. The one telltale hint that calculated LDL is wrong is when HDL is <50 mg--that's nearly everybody.

So what's your LDL? You won't really know unless it's measured. Our preferred method is NMR (LipoScience) LDL particle number, probably the most accurate of all. Second best: apoprotein B, direct measured LDL, and non-HDL. (We'll cover this issue much more extensively in an upcoming report on the www.cureality.com website in an extensive Special Report.)

Are you the exception?


I read about 40 heart scans this morning. In the stack was a 41-year old man with a heart scan score of 841.

That's terribly high for anyone, let alone a 41-year old person. He's lucky to find out about this before catastrophe strikes.

People like this worry me. In general, we advise men to consider a heart scan age 40 and older; women 50 and older. If there's anything exceptional about your family history or your own history, then you might notch these numbers down another 5-10 years. For instance, if your Dad had a heart attack at age 43, you might consider a scan at age 35. Or, if you've had diabetes for several years and you're a 42-year old woman, you might think about a scan. (Men tend to develop measurable plaque by heart scans 10 years before women.)

There are no hard and fast rules. It's unusual for a male to have a score >0 before age 40. Likewise, it's very uncommon for a woman to have a score >0 before age 50. But there are occasional exceptions--but they can be very important exceptions.

Our 41-year old man with the score of 841, for instance, probably had a high score since his mid-30s. I've seen several women without any obvious risk factors with scores in the several hundred range in their early 40s.

My rule: When in doubt, opt for safety. Every day, I still read about people in their 30s, 40s, and 50s dying of heart attacks. It shouldn't happen.

When in doubt, get the heart scan. The most you'll lose is the cost of the scan and a modest exposure to radiation. If your score is zero, you know you're safe for the next 5 or more years. But if you have an exceptional score at a young age, take preventive action.

Self-empowerment in health: The new wave in health care

Track Your Plaque is just one facet of the broad and powerful emerging wave of self-empowerment in health.

Hospitals, drug and device manufacturers, and the medical establishment don't like this idea. People managing their own health? That's ridiculous! Dangerous! But mostly unprofitable.

Self-empowerment means having easy access to simple, safe, and inexpensive diagnostic tests like heart scans, carotid scans, bone densitometry (for osteoporosis), cholesterol tests, abdominal ultrasound, even brain scans (e.g., CT or MRI) for people with a family history of brain aneurysm.

Opponents of this idea worry about the "false-positives" that come about with broad testing, i.e, detection of abnormalities that are artifactual. Our experience is that false-positives are only an occasional problem with any test. Instead, we find that most people have many true-positives. In CT heart scanning, for example, we find many unsuspected enlarged aortas (potential future aneurysms), valve disorders, and aortic calcium. These are all important in a preventive program. Unfortunately, your doctor's definition of false-positive often means that no corrective procedure or operation is required.

Other evidence that self-empowerment in health is growing:

--The nutritional supplement movement. What better example of power in managing your own health is there than the fabulous array of nutritional supplements available?

--Medications moving to over-the-counter status. Gradually, more and more medications are trickling into availability for you to obtain without a doctor's prescription.

--What I call "retail imaging", i.e. screening ultrasound, heart scans, full body scans, etc. that are available in most states without a doctor's order.

--The Internet. The rapidity and depth of information available on the Internet today is mind-boggling. It will fuel the self-empowerment movement by providing sophisticated information to the health care consumer previously available only through your physician.

--High-deductible health insurance plans. If health care consumers will bear more and more of the costs of health care, they will seize greater responsibility for early identification and prevention to minimize long-term costs.

There are more. But the movement is powerful and broad--and unstoppable. Let the establishment with vested interests in preserving the status quo fuss and complain, just like horse and buggy manufacturers did in the early 1900's when the autmobile came along.
Small LDL: Simple vs. complex carbohydrates

Small LDL: Simple vs. complex carbohydrates

Joseph is a whip-smart corporate attorney, but one who accepts advice at his own pace. He likes to explore and consider each step of the advice I give him.

Starting (NMR) lipoprotein panel on no treatment or diet change:

LDL particle number 2620 nmol/L (which I would equate to 262 mg/dl LDL cholesterol)
Small LDL 2331 nmol/L--representing 89% of LDL particle number, a severe dominance of small LDL

I advised him to eliminate wheat, cornstarch, and sugars, while limiting other carbohydrate sources, as well. Joseph didn't like this idea very much, concerned that it would be impractical, given his busy schedule. He also did a lot of reading of the sort that suggested that replacing white flour with whole grains provided health advantages. So that's what he did: Replaced all sugar and refined flour products with whole grains, but did not restrict his intake of grains.

Next lipoprotein panel with whole grains replacing white refined flour:

LDL particle number 2451 nmol/L
Small LDL 1998 nmol/L--representing 81.5% of LDL particle number.

In other words, replacing white flour products with whole grain products reduced small LDL by 14%--a modest improvement, but hardly great.

I explained to Joseph that any grain, complex, refined, or simple--will, just like other sugars and carbohydrates, still provoke small LDL. Given the severity of his patterns, I suggested trying again, this time with full elimination of grains.

Next lipoprotein panel with elimination of whole grains:

LDL particle number 1320 nmol/L
Small LDL 646 nmol/L
--48.9% of total LDL particle number, but a much lower absolute number, a reduction of 67.6%.

This is typical of the LDL responses I see with elimination of wheat products on the background of an overall carbohydrate restriction: Big drops in precisely measured LDL as LDL particle number (i.e., an actual count of LDL particles, not LDL cholesterol) and big drops in the number of small LDL particles.

You might say that wheat elimination and limitation of carbohydrate intake can yield statin-like values . . . without the statin.

Comments (17) -

  • medeldist

    5/4/2010 8:26:52 AM |

    Interesting. I'm looking through my screening results (I'm in Europe) and there is no mention of LDL, but I have two other values, P-Apo A1 (1.77 g/L) and P-Apo B (1.09 g/L). Is there a relation between these and LDL/HDL?

  • tom

    5/4/2010 1:02:12 PM |

    It is good to have positive feedback via blood testing to show changes one is making to their body. I wonder what is a good interval between tests to show cholesterol changes?

    On a similar note, I have been eating low carb for 4 months using my blood meter to reduce both blood sugars and insulin resistance for pre-diabetes. I am still thinking about your slo-niacin suggestions and how the bad increase in blood sugar and insulin resistance vs the good cholesterol effects would affect me. I am waiting to get results from my first NMR lipoprofile to make a decision.

  • Ned Kock

    5/4/2010 3:49:58 PM |

    Indeed, restricting carbohydrates is more similar to taking statins than many people think. With the advantage that it does not have the side effects of statins, and is not costly at all.

    Many people do not know that carbohydrates stimulate the production of VLDL, suppressing the production of free fatty acids and ketones. Our liver then pumps out small VLDL particles at a high rate, and these end up as small-dense LDL particles. The potentially atherogenic type, in the presence of other factors (e.g., chronic inflammation).

    Low carbohydrate dieting stimulates the production and release of free fatty acids and ketones, suppressing the production of VLDL. Our liver then pumps fewer VLDL particles into the bloodstream (since FFAs and ketones are already doing a good job at feeding muscle and brain tissue), and when it does it lets out big VLDL particles, which end up as large-fluffy LDL particles prior to re-absorption by the liver.

    If anyone wants to see what these particles look like, the figure in the post below may be useful:

    http://healthcorrelator.blogspot.com/2010/02/large-ldl-and-small-hdl-particles-best.html

    Ketones are not shown because they are water soluble:

    http://healthcorrelator.blogspot.com/2010/04/ketones-and-ketosis-physiological-and.html

  • Anonymous

    5/4/2010 4:01:31 PM |

    Do you have any comments on oatmeal? I've noticed that for me personally, it doesn't significantly spike my blood sugar, and I've heard a lot about how oatmeal can improve cholesterol -- but of course this is often just focused on total cholesterol or general LDL amount.

  • Anonymous

    5/4/2010 5:05:47 PM |

    Hi Dr. Davis
    I'm really hoping to hear your opinion on this study:
    http://www.pnas.org/content/early/2009/08/21/0907995106.abstract?sid=

  • Dr. William Davis

    5/5/2010 1:38:40 AM |

    Hear, hear, Ned!

    I agree: Carbohydrate restriction is the unsung hero of VLDL and LDL reduction, though actual measurements are required to appreciate this effect.

  • Dr. William Davis

    5/5/2010 1:40:35 AM |

    Oatmeal anonymous--

    It's all about individualizing your food choices.

    Checking postprandial blood sugars is an excellent way to know if these issues apply to you or not, or to what degree.

  • Jeff

    5/5/2010 11:56:35 AM |

    What are your thoughts on Amlamax for the reduction of LDL?

  • Lucy

    5/5/2010 3:41:11 PM |

    OK, so here's my question... I am young (late twenties), thin (BMI: <20.2), and active (run, bike).  However, I still have almost all small, dense LDL.   I'm an ApoE 3/4, which I understand means I need to limit the amount of fat in my diet.  However, if grains also contribute to small LDL, what am I supposed to eat?   I don't eat much wheat as it is (my husband is celiac), but I do enjoy oats, rice, and the occassional piece of bread when we eat out, etc.  Would cutting all grains from my diet and living on only vegetables, some fruits, and lean meats be acceptable? Sounds like a boring and sad diet...

  • pjnoir

    5/5/2010 9:58:04 PM |

    Oatmeal reducing Cholestral is a joke. If I eat Oatmeal for breakfast( even a 1/2 cup) my BG numbers stay HIGH all day. Oatmeal is not a food I have on my breakfast table ever.

  • Anonymous

    5/9/2010 3:08:36 PM |

    Over what time period were these
    panels taken or in other words, how many weeks or months in-between test?
    Love the blog!
    CB

  • Conrad

    5/11/2010 2:28:43 PM |

    Who knows where to get an (NMR) lipoprotein panel in Toronto/Mississauga?

  • holym

    5/12/2010 6:36:06 PM |

    You say, "LDL particle number 2620 nmol/L (which I would equate to 262 mg/dl LDL cholesterol)"

    Why would you equate 2620 nmol/L to 262 mg/dl? The conversion factor given at http://jama.ama-assn.org/content/vol295/issue1/images/data/103/DC6/JAMA_auinst_si.dtl is roughly 1mmol/l = 39mg/dl.

  • Dr. William Davis

    5/12/2010 10:21:43 PM |

    Holym--

    I believe you are confusing Friedewald calculated LDL in nmol/L and LDL particle number--two entirely different things.

    My simple conversion is meant to yield a "Friedewald-like" LDL cholesterol from LDL particle number.

  • Dolly.G

    5/14/2010 3:34:18 AM |

    I do agree!!

  • Anonymous

    5/22/2010 11:06:37 PM |

    Where can I find the peer reviewed research upon which you base your advice? Thanks

  • David M Gordon

    6/15/2010 1:18:55 AM |

    My lab results are in, and they are,  on balance, not much improved. I think.

    The changes I effected since my prior panel panel 3 months ago:
    1) Lost 20 lbs
    2) Ingest 6,000mg of fish oil for a total of 1200mg (total) of DHA and EPA/day
    3) Ingest 500mg of Slo-Niacin/day (with 125oz of water/day)
    4) Ingest 6,000mg of Vitamin D/day (Changed to the proper Vitamin D soy capsule from the powdered tablet)
    5) Eat a large handful of almonds/day
    6) Exercise hard (weight training and cardio intervals for a minimum of 90 minutes/day).

    The (worsened) numbers:
    1) Total Cholesterol: 269 (from 267)
    2) LDL Cholesterol: 186 (from 175)

    The (improved) numbers:
    3) Triglycerides: 201 (from 280)
    4) HDL Cholesterol: 43 (from 36)

    Unfair to ask you, I know, but I am frustrated. What do I do wrong? What can I do more? I am VERY reluctant to take a statin, as I have tried many, all with terrible side-effects. And, fwiw, I started today on my wheat-free diet.

    Thank you for your guidance,
    David

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