Hammers and nails

I'm sure you've heard the old saying that,

To a man with a hammer, everything looks like a nail.


It couldn't be truer than in heart procedures (the man with the hammer) and heart disease (the nail).

What does it take in 2008 to become an interventional cardiologist trained in all the techniques of angioplasty, stenting, intracoronary ultrasound, etc.? Start with your undergraduate degree (4 years), then medical school (another 4 years), then training in internal medicine (3 years), then general cardiology taining (3 years), then an additional year in interventional cardiology. Each step along the way also involves competing for these spaces, a process that requires much time, money, and sweat.

The total time investment is 15 years after high school. Many if not most college students graduate with debt. Pile on the substantial cost of medical school. Training after medical school pays a modest salary, enough for a single person. Many trainees by then have spouses and a family, would like to buy a house, have bills to pay. (I managed to buy my first house for $69,000 in Columbus, Ohio and paid my mortgage by sleeping only every other night and moonlighting on my off nights.)

By the time the interventional cardiologist-in-training finishes his/her 15 years, they are hungry for a hefty increase in income. After such a time and money investment, I do believe that there is at least some justification for generous income for the years of work involved.

Back to our hammer and nail metaphor. Not only do we now have a man or woman with a hammer, but a really expensive hammer that required a substantial amount of effort to obtain. Now, our hapless hammer-bearer is desperate to see everything in sight as a nail.

You're seen in consultation by this fresh interventional cardiologist in practice for only a few years. Guess what he/she advises? Go straight to the catheterization laboratory, of course. Throw in the fact that insurance reimbursement is most generous for heart procedures, far more than for consulting in the office, doing a stress test, or other simpler, non-invasive tests, and the incentives are clear.

The system, you see, is set up to follow such a path. The path to the cath lab is heavily incentivized, paths in the other direction discouraged, disparaged, or just ignored.

My message: Don't get nailed.

Comments (4) -

  • Anonymous

    2/28/2008 7:15:00 PM |

    Yup.  "Hammers and nails"!

    I am 65 years old.  I had a stent inserted in the "widow-maker" artery (80% blockage) a year ago.  I had passed out a couple of times (heart rate dangerously low - 30s).  I rode to the hospital in an ambulance.  Tests revealed short LBBB episodes; mild mitral regurgitation, mild tricuspid regurgitation. Catherization showed 3 vessel CAD. I was told that a medicated stent was absolutely necessary given the situation; regardless, I have to accept that.   A pacemaker was installed to prevent bradycardia and keeps heart rate from dropping below 60.   I have 20% L distal main blockage and 90% lesion of the high first obtuse marginal at the takeoff.  The right coronary had 60% posterior lateral branch stenosis.  

    Since then I have reduced TG from 360 to 60,  LDL from 89 to 82 (although a few months ago it was in the mid-70s), and increased HDL from 30 to 46.  I went from 365lbs to 190lbs and hope to eventually get to 180lb this Spring.  I did it by progressing from walking to trotting (slow run) and dietstyle changes (low-GI veggies, fruits, etc.) .

    On a recent visit the cardiologist said the the LDL needs to be 70 or below to "freeze" the 90% blockage and gave me a prescription for Lipitor.  I asked if there were alternatives, like diet, supplements, etc.  He admitted that he did not know about those alternative but did know Lipitor.   When the only tool you have is a hammer then everything is a nail.  I understand that the 90% blockage is important but will not take the Lipitor to achieve the 12 points reduction.  Seems like an overkill.  

    I asked him if there was a way to evaluate my current condition.  I was told there was no way.  Basically, if I have no symptoms, good.  If I have symptoms then it will have to be evaluated.  Death could be the only symptom.   I swear he was about to say bypass surgery ($$$$$$!) was inevitable.  Something is wrong with this "fly-in-the-fog-and-hope-you-don't- hit-a-mountain" approach. Hope is not a strategy!

    I am confident that I can reduce LDL to below 70 based on eliminating wheat-products in my diet plus increasing oat bran in my diet.  I also take fish oil daily (EPA/DHA-2g).  I am looking for a new cardiologist.  I just recently purchased your book and find it very instructive.  In the meantime I have an appointment with my primary care physician to discuss implementing the Track Your Plaque program.  I realize that the one stent will skew the scan numbers but can be used as a baseline number.

    Anyway, onward . . .

  • mike V

    2/29/2008 4:49:00 PM |

    As an ancient engineer, I often use your aphorism.
    Your publicly expressed viewpoint must earn a lot of criticism from your colleagues, and undoubtedly there have been financial and other sacrifices on your part.
    I would like to offer heart felt appreciation for what you do.
    I assume that many colleagues share your point of view. Are there others who have the 'cojones' to speak out?  Is there any degree of cooperation?

    I would like to know something of your perspective on potential solutions for cardiology in particular, and healthcare in general. In fact, on the whole "medical-pharmaceutical-insurance-government complex" (to paraphrase the warnings of Dwight Eisenhower).
    I grew up under British socialized medicine, and while the delivery to the people is more even, it is not a  solution. Do you foresee some kind of compromise as workable? Should the solution be patient driven? Business driven? Govt. driven?
    I recall that in the UK, doctors and the system tend to be viewed as almost god like in their authority, although a few individual Dr. rebels such as. Malcolm Kendrick come to mind.

    Yes, I know. This is far too big a topic for your blog, but with the elections coming up, my curiosity just got the better of me!
    Note: I promise not to ask any more difficult questions until next Feruary 29!
    MikeV

  • Anna

    3/2/2008 8:50:00 PM |

    I'd like to echo the comment by Mike V.  The current health care situation in the US is so "unsustainable", to borrow an agricultural phrase, yet having a good view of the UK's NHS (I have English in-laws) doesn't inspire me to wish all of that on myself or the US public, either.  My in-laws in Norway seem to have it better in many ways, but I see some dangerous aspects creeping in over there, too.  We need better options for our nations's healthcare, but I only seem to hear about how well our current system works (for some people) with all the costly high-tech procedures and diagnostics or else warmed-over versions of the UK and Canadian systems, which has some serious flaws, too.

    I want healthcare that takes prevention and health promotion into account, not just "disease care" that catches disease "just in time".  I don't want "checkbook science" or "concensus science" dictating what options I have or what information is available to me.  I don't want a "nanny" nor do I want my care determined by healthcare industry lobbyists.  

    There must be something better, that does a better job of balancing promotion of good health with treatment of disease, with balancing good intentions without nannyism, with balancing  access to care without over treatment.  We need a system that allows medical personnel to make the best decisions for each individual patient, with a better way of managing the associated costs and compensation for all participants.   It is very hard for physicians to "buck the trends" these days.

    As an insider with an insightful view from the trenches of the healthcare industry, I'd love to read more of your thoughts on these issues in future posts, Dr. Davis (your busy schedule allowing, of course).  How can we reform healthcare without pushing the pendulum too far into another harmful direction, in a way that it beneficial to all - patients, medical personnel, medical institutions, medical research, etc?

    And then, how do we make it happen?

  • Anonymous

    1/1/2010 8:05:29 PM |

    Webmaster, I love your site. Thank you sooo much for working on it.

Loading
Can you handle fat?

Can you handle fat?

No question: Low-carbohydrate diets generate improved postprandial lipoprotein responses.

Here's a graph from one of Jeff Volek's great studies:



Participants followed a low-carb diet of less than 50 g per day carbohydrate ("ketogenic") with 61% fat.   The curves were generated by administering a 123 g fat challenge with triglyceride levels assessed postprandially. The solid line represents the postprandial response at the start; dotted line after the 6-week low-carb effort.

Note that:

1) The postprandial triglyceride (area-under-the-curve) response was reduced by 29% in the low-carb diet.  That's a good thing.

2) The large fat challenge generated high triglycerides of greater than 160 mg/dl even in the low-carb group. That's a bad thing. 

In other words, low-carb improves postprandial responses substantially--but postprandial phenomena still occur. Postprandial triglycerides of 88 mg/dl or greater are associated with greater heart attack risk because they signify the presence of greater quantities of atherogenic (plaque-causing) postprandial lipoproteins.

A full discussion of these phenomena can be found in the Track Your Plaque Special Report, Postprandial Responses: The Storm After the Quiet!, part of a 3-part series on postprandial phenomena.

Comments (19) -

  • Gretchen

    3/21/2010 1:42:32 PM |

    My problem with Volek's study is that it's analogous to putting someone on a LC diet and then doing a GTT.

    They kept people on a low-fat high-carb diet and put others on a high-fat, low-carb diet and then did a lipid tolerance test.

    In both cases, your response to the nutrient (carbs in GTT and fat in lipid test) will be impaired because you stop producing enzymes you don't need.

    The people on the low-fat diet didn't tolerate fat as well as people who had been on a high-fat diet when suddenly challenged with a tremendous amount of fat.

    What I'd want to know would be the lipid responses *during* the 6 weeks on the two diets.

    What his results show me is that eating a high-fat diet makes your body adapt to burning fats. This is what I would expect.

  • David

    3/22/2010 1:13:51 AM |

    While these results are interesting, I wonder how relevant they are in a real life setting. The fat load that generated these results was 123 grams, which would be like eating 1.3 sticks of butter in a single meal, or like sitting down and drinking nearly 3 cups of heavy whipping cream all at once. Who does that?

    Dr. Davis, I know you are encouraging 3 hour postprandial TG checks in the TYP program via CardioChek. Are you seeing these types of postprandial results (viz. results similar to Volek's) following meals with less exaggerated (i.e. normal) fat intake?

  • Miki

    3/22/2010 9:40:34 AM |

    Here is prospective study done in Sweden with a follow up period of 12 years that shows a higher consumption of dairy fat like butter and cream is associated with a 45% reduction in risk for heart disease. "Nothing in biology must make sense except in the light of evolution"
    http://www.mdpi.com/1660-4601/6/10/2626/pdf

  • ET

    3/22/2010 5:14:12 PM |

    After eating low-carb for over a year, my post-prandial triglycerides never go above 100.

    I do agree with Gretchen on the adaptation process.  I shudder to think what an OGTT test would show.  Maybe some day, I'll drop $70 to find out if I can get someone to take me.  I'll be in no shape to drive after consuming that much sugar.

  • zach

    3/22/2010 7:39:03 PM |

    I agree Gretchen. There can be a long adaptation period. Dr. Davis's patients are blessed to have him as their doctor, but I suspect he can't quite kick the lipid hypothesis!

  • Anonymous

    3/22/2010 7:45:57 PM |

    At least for me, I think Dr Ron Rosedale's diet is best.  Low carb, protein at 50 to 70 gms. No grain, mostly no dairy.  He says if you want to lose weight you need to avoid saturated fat because saturated fat keeps you insulin and leptin resistant.   Unless you drink olive oil, the diet winds up being low calorie.
    Hmmmm.  Maybe that is the answer.

  • donny

    3/22/2010 8:35:33 PM |

    I have to wonder what the mechanism is for high triglycerides causing heart disease? High triglycerides in a high carb diet usually means high insulin, high glucose vs fat metabolism,and low hdl. Aren't high triglycerides in a low carb diet a slightly different picture?

    Right or wrong, I admire your willingness to go against the tide (any tide) for what you see as right.

  • Stan (Heretic)

    3/22/2010 8:52:55 PM |

    Absolutely!  What amazes me is, in spite of their adaptation to a high fat low carb metabolism, the patients still saw their OGTT triglyceride results improve over time!  This is my experience too.

    There is no doubts, on a high animal fat diet or on a high fat diet of any kind, our tolerance to glucose is indeed reduced.  50g in one does is OK for me (I weigh ~65kg) but 100g in one go as sugar would still be too much and would make me feel sick (but the same amount of carbs in vegetables spread over a day would be ok).

    It took a good few years to improve my tolerance.  Right after (2 weeks after) I went on a high animal fat LC nutrition (in 1999) I could not tolerate even a 50g of sugar in one shot! Even one bottle of beer (~20g of carbs) would make me feel stomach sick + give me a headache.   It took me more than 2 years to reach this tolerance to carbs, and I even noticed some steady improvement from year 2 to year 7 into this.

    It is indeed totally illogical, although unsurprising given the present standards of medical science, to use big glucose shots to assert patients response under  predominantly ketogenic metabolism.

    It is a curious lack of curiosity on behalf of the mainstream medicine that no nutrition research group seem interested in studying the exact effects (all beneficial for me), vitamin and nutrient requirements (very different!) and adaptation issues on the high fat low carb diets.

    Stan

  • Anonymous

    3/22/2010 10:37:06 PM |

    The last few posts have generated quite a few comments!!!


    Anonymous said...
    "The last sentence made me cry."


    Alfred E. said...
    "This is becoming more confusing by the minute. First, no carbs, only fats and protein. Now, no butter, no dairy, no, carbs, just a few drops of fat and protein. I am going to cry, like the previous poster."


    Dana Law said...
    "I've learned a lot but need some direct guidance. I find that making daily decisions on what to eat difficult. I want to eat healthy and have some variety. Here's the question. What do you eat? What did you have for breakfast this morning? What did you eat last night? What do you keep in the fridge and on the counter to make following your dictates easier. I don't want to over-think it but all this information is overwhelming."


    Helen said...
    "Again, with so many cautions of what not to eat, I'd love to see a Dr. Davis-approved diet plan. If I were just following all the Don'ts, I'd go crazy (and hungry)."


    The bottom line is that Jimmy Moore, William Davis, Matt Stone, Kurt Harris, Stephan Guyenet, Don Matesz, Art Ayers, Billy E., B.G., T., Mark Sisson, Richard Nikoley, Michael Eades, Matt Metzger, Peter, Arthur De Vany, Chris, Ryan Koch, Chris Masterjohn, Jenny Ruhl, Richard Bernstein, Fred Hahn, Jonny Bowden, Larry McCleary, Mary Vernon, Dave Dixon, Mike O'Donnell, Scott Kustes, Gary Taubes, Rob Wolf, Seth Roberts, Loren Cordain, Sally Fallon, Mary Egin, Keith Thomas, Tom Naughton, PaleoDoc, Nora Gedgaudes, Barry Groves, John Briffa, Laura Dobson, Dana Carpender, Keith Norris, Rusty Moore, Doug McGuff, Martin Berkhan, Bryce Lane, Erwen Le Corre, Dan, Drew Baye, Uffe Ravnskov, Eric Westman, Lierre Keith, Brian Peskin, Steve Parker, Jeff Volek, Stephen Phinney, Diana Schwarzbien, Barry Sears, Nina Planck, Lyle McDonald, T.S. Wiley, James Carlson, Steven Gundry, Keith Berkowitz, Richard Feinmann, Jan Kwasniewski, Konstantin Monastyrsky, etc., etc., etc. cannot come to a cohesive way of eating that is workable for everyone. My guess is there are not two of these people whose diet is identical!!

    Is it any wonder we are confused? Many folks are looking to emulate the diets of others - a method that will never provide personal optimal health.

    Take the time to watch/listen to the following lecture by Dr. Bruce German from UC Davis. It will help to explain why we have this conundrum.

    http://www.researchchannel.org/prog/displayevent.aspx?rID=29854&fID=567

    Then read the writings of a Venetian gentleman who lived to be almost 100 yars of age (Born 1467 - Died 1566).

    http://www.soilandhealth.org/02/0201hyglibcat/020105cornaro.html


    Both of these together put nutrition and health in perspective for me.

    Tom

  • DaisyPatch

    3/23/2010 6:32:40 AM |

    Dr. Davis, please comment on the study released today by the Harvard medical School.  How does one avoid saturated fats and still get proteins if he is a low carber??   http://news.bbc.co.uk/2/hi/health/8580899.stm  Thanks!

  • Dr. William Davis

    3/23/2010 1:57:39 PM |

    Hi, David--

    Studies are meant to make observations. That is the reason for the unnatural intake of fats.

    People on the Track Your Plaque Diet approach rarely show such high levels because they've reduced or eliminated the foods that form the basis for high postprandial responses (wheat, cornstarch, and sugars) and do not indulge in high fat intakes that cause near-term surges of postprandial particles.

  • Dr. William Davis

    3/23/2010 2:01:00 PM |

    Hi, Gretchen--

    I agree, but I believe that the observations are still relevant. It shows us that postprandial responses are sensitive to carbohydrate intake over time. It also shows us that average people have substantial surges postprandially with fat challenges on an average American diet.

    While I advocate carbodrate restriction and weighing diet more heavily in fats and oils, you can see that the emerging conversation is that unlimited quantities of oils, low-carb or no, have the potential to generate extravagant postprandial responses.

  • Gretchen

    3/23/2010 2:53:11 PM |

    I tested my postprandial triglycerides after having been on a LC diet for about 11 years and wheat-free even longer (because I discovered that it was wheat that was giving me acid reflux). With about 50 g of fat, the TGs went very high, over 400.

    Someone else said his rarely went over 100 after only a year on a LC diet.

    The author of "Life Without Bread" presented a graph showing that younger people reduced cholesterol on a LC diet but older people didn't.

    We may all react slightly differently to different diets (as well as interpreting them differently, as someone else has pointed out; you can be on a LC diet that includes mostly LC junk food or a LC diet that includes a lot of greens and lean meat).

    I have type 2 diabetes, and some people think that metabolic syndrome/type 2 diabetes is basically a disease of disturbed lipid metabolism.

    So what worries me is that people with insulin resistance, who may not respond the same way as people without IR, are taking LC advice to eat a lot of fat that is based on the experiences of people without IR.

    Here's an article that addresses this issue:

    http://www.lipidworld.com/content/4/1/21

    This is why some time ago I felt the "GO Diet" by Jack Goldberg and Karen O'Mara, which is LC but emphasizes monounsaturated fat, yogurt, and fiber, was the best solution and helped them rewrite it as "The Four Corners Diet."

    Apparently very few people agreed with me, and the book bombed.

    I still think LC with restrained fat intake, meaning restrained calorie intake, and real foods along with reasonable exercise is the best solution on the basis of today's evidence.

  • Kurt G. Harris MD

    3/23/2010 4:05:03 PM |

    @Tom (anonymous)

    Although there are many voices and styles of presentation, I can state, through frequent communication with them, that my approach at PaNu is a tent that fully covers the diets of Eades, Dr. Stephan, Peter at Hyperlipid, Sisson, Nikoley, and although I do not correspond with them, Bernstein and Groves. There is also significant overlap with the Weston A Price Foundation and even Matt Stone.

    If you look for a common element in all of our approaches, and indeed the crux move in choosing a healthy alternative to the SAD, it is actually nothing to do with paleo so much as the simple and total rejection of Ancel Keys and the multiple versions of the lipid hypothesis he spawned 50 years ago.

    This then allows the realization that humans are evolved to eat substantial calories from animal products, including animal fats, and further including (on purpose, and without limitation or fear) SATURATED FAT.

    All versions of the lpid hypothesis have in common the belief that somehow, somewhere, there is a molecule that is fat, tastes like fat, is  kind of like fat, is associated with fat, or reminds us of fat, and that molecule is perversely designed to give us atherosclerosis and coronary heart disease.

    Start to view all these dietary approaches through the filter of whether they reject the lipid hypothesis instead of "low carb" or "paleo" and the dividing line will start to look much much brighter.

  • Anonymous

    3/23/2010 11:47:32 PM |

    So for someone that works out a lot and is suppost to gte something in the 3000-4000 calories per day... what would be the addecuate kind of food to use as high calories source?
    I was taking unlimited almonds, but this post makes that look like way too much fats.

  • Anonymous

    3/24/2010 4:37:31 AM |

    @ Dr. Harris,

    You obviously did not read/listen to the two links that I provided in my comment.  I happen to believe every word you wrote in your response.   My contention is that personal optimal health and longevity is beyond the simplicity of following 12 simple steps (though I do think they are a huge step in the right direction).  Health is determined at the molecular level based upon an individuals genetics as affected by many factors, particularly, stress. Please Google nutrigenomics, epigenetics and metabolomics.

    My apologies to Dr. Davis.

    (I may have inadvertantly sent a another version of this comment previously.)

    Tom

  • Pythonic Avocado

    3/25/2010 3:21:41 PM |

    Isn't this just normal for a well adjusted human? I mean TGs are how fuel (free fatty acids) is transported through the blood from its sources (liver and fat cells) to the places where it is needed i.e. everywhere else.

  • Anonymous

    3/28/2010 2:00:14 PM |

    @ Pythonic Avocado

    Yup, eating fat raises TG levels temporarily.  I consume a high-fat diet with lots of nuts, and, based on results from a TG meter, do not see extraordinarily high TG levels (starting from a fasting level near 70).  I also spread meals out during the day, thereby reducing both BG and TG spikes.

    The only time I saw a high TG spike was after consuming 2 raw egg yolks!  This influenced how I approach eggs (always cooked, one at a time, mixed with other foods).

    btw, if you consume too much fat in one meal, a lot of the fat will end up in your stools, since there is a limit to the lipase that your pancreas can generate on short notice.  Another complication when trying to compare diets.

  • buy jeans

    11/3/2010 3:44:13 PM |

    In other words, low-carb improves postprandial responses substantially--but postprandial phenomena still occur. Postprandial triglycerides of 88 mg/dl or greater are associated with greater heart attack risk because they signify the presence of greater quantities of atherogenic (plaque-causing) postprandial lipoproteins.

Loading
Thinner by Thursday

Thinner by Thursday

You want to lose a few pounds . . . Okay, maybe 50 or 75.

Should you exercise? Lengthen you workout? Push the plate away, deny yourself seconds, use a smaller plate?

Of all the weight loss strategies I've tried in patients, there's only one that stands out as a means of obtaining immediate--meaning within 3 days--weight reduction.

Wheat elimination.

Loading