Fat Head: Tom Naughton's manifesto for low-carb eating

12. March 2010 William Davis (16)
I just got back from Jimmy Moore's low-carb cruise to the Bahamas.

Among the many interesting people I met on the cruise was the creator of the documentary film, Fat Head, Tom Naughton.

Tom brings both creative insights into low-carbohydrate eating as well as humor. Low-carb eating can be a pretty contentious issue, but Tom made it fun. He will make you laugh about many of the odd notions we have about diet.

Among the best parts of Fat Head is Tom's portrayal of the effects of carbohydrates on insulin and fat metabolism:






Fat Head joins the ranks of films like Food, Inc, that make nutrition information entertaining. For anyone interested in a unvarnished look at diet, weight loss, along with a few laughs along the way, Tom Naughton's Fat Head is worth viewing.

Oatmeal: Good or bad?

11. March 2010 William Davis (67)

You've heard it before: oatmeal reduces cholesterol. Oatmeal producers have obtained permission from the FDA to use a cholesterol-reducing claim. The American Heart Association provides a (paid) endorsement of Quaker Oats.

I've lost count of the times I've asked someone whether they ate a healthy breakfast and the answer was "Sure. I had oatmeal."

Is this true? Is oatmeal heart healthy because it reduces LDL cholesterol?

I don't think so. Try this: Have a serving of slow-cooked (e.g., steel-cut, Irish, etc.) oatmeal. Most people will consume oatmeal with skim or 1% milk and some dried or fresh fruit. Wait an hour, then check your blood sugar.

If you are not diabetic and have a fasting blood sugar in the "normal" range (<100 mg/dl), you will typically have a 1-hour blood glucose of 150-180 mg/dl--very high. If you have mildly increased fasting blood sugars between 100 and 126 mg/dl, postprandial (after-eating) blood sugars will easily exceed 180 mg/dl. If you have diabetes, hold onto your hat because, even if you take medications, blood sugar one hour after oatmeal will usually be between 200 and 300 mg/dl.

This is because oatmeal is converted rapidly to sugar, and a lot of it. Even if you were to repeat the experiment with no dried or fresh fruit, you will still witness high blood sugars in these ranges. Do like some people and pile on the raisins, dried cranberries, or brown sugar, and you will see blood sugars go even higher.

Blood sugars this high, experienced repetitively, will damage the delicate insulin-producing beta cells of your pancreas (glucose toxicity). It also glycates proteins of the eyes and vascular walls. The blood glucose effects of oatmeal really don't differ much from a large Snickers bar or bowl of jelly beans.

If you are like most people, you too will show high blood sugars after oatmeal. It's easy to find out . . . check your postprandial blood sugar.

In past, I recommended oat products, specifically oat bran, to reduce LDL, especially small LDL. I've changed my mind: I now no longer recommend any oat product due to its blood sugar-increasing effects.

Better choices: eggs, ground flaxseed as a hot cereal, cheese (the one dairy product that does not excessively trigger insulin), raw nuts, salads, leftovers from last evening's dinner.

Mustard: Super health food?

6. March 2010 William Davis (32)
Could mustard--yes, the yellow condiment you smear on hot dogs--be a super heart healthy food in disguise?

Consider that mustard contains:

Vinegar

Turmeric

No appreciable sugar


The vinegar slows gastric emptying, resulting in slower absorption of any carbohydrates and a reduced glucose area-under-the-curve. Of the little fats contained (about 3 grams per 1/4 cup), most are desirable monounsaturates. Mustards are relatively rich in selenium, with 20 mcg per 1/4 cup, helpful for protection against cancer and thyroid disease, and magnesium, 31 mg per 1/4 cup.

Turmeric is added to most mustards. One of the constituents of turmeric, curcumin, the substance that confers the bright yellow color, has been a focus of interest for its anti-inflammatory effects. Curcumin has been documented to reduce activity of the inflammatory enzymes cyclooxygenase-2 (COX-2), lipoxygenase, and reduce activity of inflammatory signal molecules, tumor necrosis factor-alpha (TNF-a), interleukin (IL)-1,2,6,8, and 12, and monocyte chemoattractant protein (MCP). Curcumin also has been shown to reduce LDL oxidation, a potentially important step in atherosclerotic plaque formation. Turmeric is used as a tea by Okinawans. (Hmmmm . . . )

Turmeric content of mustard can vary, of course. Likewise, sugar content. Look for mustards that are not sweetened, so avoid honey mustard in particular. Look for hot, brown, horseradish, Dijon, etc. If there is a downside to mustard, it's sodium content, though the 709 mg per 1/4 cup should only be a problem for those who are sodium-sensitive (African Americans, in particular).

So perhaps mustard isn't exactly a super health food. But it may have some bona fide health effects and should be used generously especially if you are concerned about blood sugar and inflammatory phenomena.

Exercise and blood sugar

5. March 2010 William Davis (30)
There is no doubt that exercise yields benefits across a spectrum of health: reduced blood pressure,  reduced inflammation, reduced blood coagulation, better weight control, stronger bones, less depression, reduced risk for heart attack.

Exercise also influences blood sugar. Diabetics understand this best: Exercise reduces blood sugar 20, 30, 50 or more milligrams. A starting blood sugar, for instance, of 160 mg/dl can be reduced to 80 mg/dl by jogging or riding a bicycle. (I recently had brunch at an Indian restaurant with my family. Blood sugar one-hour postprandial: 134 mg/dl. I was sleepy and foggy. I got on my stationary bike and pedalled at a moderate clip for 60 minutes. Blood sugar: 90 mg/dl.)

Could the reduction of blood sugar with exercise be THE reason that exercise and physical activity provide such substantial benefits?

Think about it. Reduced blood sugar:

1) Reduces risk for future cardiovascular events.
2) Reduces glycation of proteins, i.e., reduced glucose binding to proteins like the ones in artery walls and the lenses of your eyes.
3) Reduces blood coagulation
4) Reduces endothelial dysfunction (abnormal artery constriction that leads to atherosclerosis)

This might explain why it doesn't require high levels of aerobic activity to derive benefit from exercise, since even modest efforts (e.g., a 15-minute walk after eating) reduce blood sugar substantially.

The incredible 33-year, 18,000-participant Whitehall study tells us that a postprandial (after-eating) blood sugar of an impossibly-difficult 83 mg/dl is required to erase the excess cardiovascular risk of blood sugar. Could this simply be telling us that physical activity or exercise is required to suppress blood sugars to these low levels?

It makes me wonder if an index of the adequacy of exercise is your post-exercise blood glucose.

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.
My bread contains 900 mg omega-3

My bread contains 900 mg omega-3

15. February 2007 William Davis (8)
Phyllis is the survivor of a large heart attack (an "anterior" myocardial infarction involving the crucial front of the heart) several years ago. Excessive fatigue prompted a stress test, which showed poor blood flow in areas outside the heart attack zone. This prompted a heart catheterization, then a bypass operation one year ago.

FINALLY, Phyllis began to understand that her unhealthy lifestyle played a role in causing her heart disease. But lifestyle alone wasn't to blame. Along with being 70 lbs overweight and overindulging in unhealthy sweets every day, she also had lipoprotein(a), small LDL particles, and high triglycerides. The high triglycerides were also associated with its evil "friends," VLDL and IDL (post-prandial, or after-eating, particles).

When I met her, Phyllis' triglycerides typically ranged from 200-300 mg/dl . Fish oil was the first solution, since it is marvelously effective for reducing triglycerides, as well as VLDL and IDL. Her dose: 6000 mg of a standard 1000 mg capsule (6 capsules) to provide 1800 mg EPA + DHA, the effective omega-3 fatty acids.

But Phyllis is not terribly good at following advice. She likes to wander off and follow her own path. She noticed that the healthy bread sold at the grocery store and containing flaxseed boasted "900 mg of omega-3s per slice!". So she ate two slices of the flaxseed-containing bread per day and dropped the fish oil.

Guess what? Triglycerides promptly rebounded to 290 mg/dl, along with oodles of VLDL and IDL.

A more obvious example occurs in people with a disorder called "familial hypertriglyceridemia," or the inherited inability to clear triglycerides from the blood. These people have triglycerides of 800 mg/dl, 2000 mg/dl, or higher. Fish oil yields dramatic drops of hundreds, or even thousands of mg. Fish oil likely achieves this effect by activating the enzyme, lipoprotein lipase, that is responsible for clearing blood triglycerides. Flaxseed oil and other linolenic acid sources yield . . .nothing.

Don't get me wrong. Flaxseed is a great food. As the ground seed, it reduces LDL cholesterol, reduces blood sugar, provides fiber for colon health, and may even yield anti-cancer benefits. Flaxseed oil is a wonderful oil, rich in monounsaturates, low in saturates, and rich in linolenic acid, an oil fraction that may provides heart benefits a la Mediterranean diet.

But linolenic acid from flaxseed is not the same as EPA + DHA from fish oil. This is most graphically proven by the lack of any triglyceride-reducing effects of flaxseed preparations.

Enjoy your flaxseed oil and ground flaxseed--but don't stop your fish oil because of it. Heart disease and coronary plaque are serious business. You need serious tools to combat and control them. Fish oil is serious business for triglycerides. Flaxseed is not.
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Comments (8) -

  • John Townsend

    2/15/2007 6:59:00 PM |

    re: " Her dose: 6000 mg of a standard 1000 mg capsule (6 capsules) to provide 1800 mg EPA + DHA, the effective omega-3 fatty acids."

    Excellent blog entry! On fish oil, this dose seems to be very high. Do you recommend this as a typical regimen?

    On another related topic, your views on common statins (eg lipitor, crestor, zocor, etc) would be appreciated. I'm getting strong warnings from knowledgable friends that statins are dangerous for liver function and can cause irreversiable damage. On the other hand I personally have found them to be very effective in bringing my cholesteral numbers in line, more than anything else I've tried. TIA

  • Dr. Davis

    2/16/2007 2:19:00 AM |

    John--
    No. This dose is for treatment of high triglycerides or postprandial disorders. Our usual starting dose is 4000 mg (1200 mg EPA+DHA).

    Regarding the statin issue. I'd refer you to an article I wrote for Life Extension magazine  archived on their website, www.lef.com. The article, entitled Cholesterol and Statin Drugs: Separating Hype from Reality, can be accessed at http://search.lef.org/cgi-src-bin/MsmGo.exe?grab_id=0&page_id=1044&query=davis%20statin&hiword=DAVI%20DAVID%20DAVIE%20DAVIES%20DAVIN%20DAVIO%20DAVISON%20DAVISS%20DAVIT%20STATI%20STATING%20STATINS%20STATIS%20davis%20statin%20

  • Cindy

    2/16/2007 3:24:00 AM |

    I just read your article that you referred to in your previous comment answer.

    I was on statins several years ago. Not only did I experience muscle and joint pains, I also had serious memory problems, depression and sleep problems. I also found that my long-standing "restless legs syndrome" became much much worse. I've also talked to many people who have experienced serious PND (peripheral nerve disorders).

    What I also experinced was a rather significant drop in HDL cholesterol.

    Thoughts?

  • Mike

    2/16/2007 3:37:00 PM |

    "But Phyllis is not terribly good at following advice. She likes to wander off and follow her own path. She noticed that the healthy bread sold at the grocery store and containing flaxseed boasted "900 mg of omega-3s per slice!". So she ate two slices of the flaxseed-containing bread per day and dropped the fish oil."

    Allow me to defend Phyllis. If all she had been told was to take a given amount of omega-3s, then she was following the prescribed path. She should have been educated as to what the various omega-3s are and which type she needed to consume.

  • John Townsend

    2/16/2007 9:31:00 PM |

    Thank you for passing on your article 'Statin Drugs: Separating Hype from Reality'... very informative I must say! Just a quick heads up on your comment about folic acid (ie “always take folic acid and vitamin B12 with niacin to protect against disruption of healthy methylation patterns”), although studies are not conclusive, apparently folate therapy (taking a combination of folic acid, vitamin B6, and vitamin B12) may be harmful after stent placement and probably should be avoided. For those who have this condition it’s advised instead, to try to get enough vitamin B by eating a balanced diet. [ref: Lange H, et al. (2004). Folate therapy and in-stent restenosis after coronary stenting. New England Journal of Medicine, 350(26): 2673–2681]

  • madcook

    2/17/2007 5:32:00 PM |

    I have to chime in here regarding Cindy's comment on statins:

    I dutifully tried for nearly two years to tolerate the various statins prescribed by my doctor.  The deep muscle aches and spasms were nearly unbearable... getting far worse when my "numbers" still weren't right and he decided to DOUBLE my dosage of Vytorin (Zocor + Zetia) from 10/20 to 10/40.  What resulted was a true nightmare for me.  I terminated this med when I had such severe muscle aching, spasms and dis-coordination that navigating up a flight of stairs was nearly impossible.  Not only that, but my memory was (fortunately temporarily) impaired, and I can remember little from a three month period of time.  Interestingly my CK was never elevated and this all happened while taking 200mgs. daily of a very reputable Co -Q10 formulation.  Cessation of the Vytorin saw the aches subside within 2 or 3 days and full mental clarity resumed within a week.  I was lucky.

    My doctor stated that there were three other statins we hadn't yet tried... fat chance doc!

    What chaps me is that the pharmaceutical companies continue to state that there is only a small percentage of patients who have side effects.  In practice, LOTS of people have problems tolerating statins, BUT these things never are reported, certainly mine wasn't by my doctor.

    Side effects can be reported to the UCSD Statin Study, and to the FDA.  The FDA form is unduly cumbersone and frankly, unless you nearly died, it probably isn't worth the time.  The UCSD Statin Study questionnaire is very thorough... and as soon as I get some time I'm planning to report my experiences with statins to them.

    I am not optimistic that doing either of the above will change the statistical misinformation out there on statin side effects.  The pharmaceutical giants have too many billions at stake to ever allow this information to attain credibility.  Their advertising billions shout otherwise...

    Great meds, IF they work for you without problems.  For me they appear to be deadly, so I think I'll just stick with the other strategies, including niacin, fish oil, etc., etc. that I've learned through TYP.

    madcook

  • madcook

    2/17/2007 5:33:00 PM |

    I have to chime in here regarding Cindy's comment on statins:

    I dutifully tried for nearly two years to tolerate the various statins prescribed by my doctor.  The deep muscle aches and spasms were nearly unbearable... getting far worse when my "numbers" still weren't right and he decided to DOUBLE my dosage of Vytorin (Zocor + Zetia) from 10/20 to 10/40.  What resulted was a true nightmare for me.  I terminated this med when I had such severe muscle aching, spasms and dis-coordination that navigating up a flight of stairs was nearly impossible.  Not only that, but my memory was (fortunately temporarily) impaired, and I can remember little from a three month period of time.  Interestingly my CK was never elevated and this all happened while taking 200mgs. daily of a very reputable Co -Q10 formulation.  Cessation of the Vytorin saw the aches subside within 2 or 3 days and full mental clarity resumed within a week.  I was lucky.

    My doctor stated that there were three other statins we hadn't yet tried... fat chance doc!

    What chaps me is that the pharmaceutical companies continue to state that there is only a small percentage of patients who have side effects.  In practice, LOTS of people have problems tolerating statins, BUT these things never are reported, certainly mine wasn't by my doctor.

    Side effects can be reported to the UCSD Statin Study, and to the FDA.  The FDA form is unduly cumbersone and frankly, unless you nearly died, it probably isn't worth the time.  The UCSD Statin Study questionnaire is very thorough... and as soon as I get some time I'm planning to report my experiences with statins to them.

    I am not optimistic that doing either of the above will change the statistical misinformation out there on statin side effects.  The pharmaceutical giants have too many billions at stake to ever allow this information to attain credibility.  Their advertising billions shout otherwise...

    Great meds, IF they work for you without problems.  For me they appear to be deadly, so I think I'll just stick with the other strategies, including niacin, fish oil, etc., etc. that I've learned through TYP.

    madcook

  • John Townsend

    2/17/2007 8:05:00 PM |

    RE: Madcook's comment "Side effects can be reported to the UCSD Statin Study, and to the FDA. "

    I'm wondering if the 'UCSD Statin Study' provide summary reports on submission findings?

    BTW, his note is a very interesting personal account which echos mine to a certain extent, albeit I'm seemingly in the early stages. I'm starting to have pretty severe shoulder pain coming out of nowhere after six mths on Zocor. I've started taking Q-10 (re: your rec) to see if it helps. Previously my reaction to Lipidor was almost immediate with severe skin rash symptoms.

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