What do Salmonella, E coli, and bread have in common?

Say you happen to eat some chicken fingers contaminated with bacteria because the 19-year old kid behind the counter failed to wash his hands after using the toilet, or because the kitchen is poorly managed with unwashed counters and cutting boards, or because the food is undercooked. You get a bout of diarrhea and cramps, along with a desire to banish chicken from your life.

Here's yet another odd wheat phenomenon: About 30% of people who eliminate wheat from their lives experience an acute food poisoning-like effect on re-exposure. You've been wheat-free for, say, 6 months. You've lost 25 lbs from your wheat belly, you've regained energy, joints feel better. You go to an office party where they're serving some really yummy looking bruschetta. Surely a couple won't hurt! Within a hour, you're getting that awful rumbling and unease that precede the explosion.

The majority of people who experience a wheat re-exposure syndrome will have diarrhea and cramps that can last from hours to days, similar to food poisoning. (Why? Why would a common food trigger a food poisoning-like effect? It happens too fast to attribute to inflammation.) Others experience asthma attacks, joint pains that last 48 hours to a week, mental fogginess, emotional distress, even rage (in males).

Wheat re-exposure in the susceptible provides a tidy demonstration of the effects of this peculiar product of genetic research. So if you are wheat-free but entertain an occasional indulgence, don't be surprised if you have to make a beeline to the toilet.

The world of intermediate carbohydrates

There are clear-cut bad carbohydrates: wheat, oats, cornstarch, and sucrose. (Fructose, too, but in a class of bad all its own.)

Wheat: The worst. Not only does wheat flour increase blood sugar higher than nearly all other carbohydrates, it invites celiac disease, neurologic impairment, mental and emotional effects, addictive (i.e., exorphin) effects, asthma, irritable bowel syndrome, acid reflux, sleepiness, sleep disruption, arthritis . . . just to name a few.

Oats: Yeah, yeah, I know: "Lowers cholesterol." But nobody told you that oats, including slow-cooked oatmeal, causes blood sugar to skyrocket.

Cornstarch: Like wheat, cornstarch flagrantly increases blood sugar.It also stimulates appetite. That's why food manufacturers put it in everything from soups to frozen dinners.

Sucrose: Not only does sucrose create a desire for more food, it is also 50% fructose, the peculiar sugar that makes us fat, increases small LDL particles, increases triglycerides, slows the metabolism of other foods, encourages diabetes, and causes more glycation than any other sugar.

But there are a large world of "other" natural carbohydrates that don't fall into the really bad category. This includes starchy beans like black, kidney, and pinto; rices such as white, brown, and wild; potatoes, including white, red, sweet, and yams; and fruits. It includes "alternative" grains like quinoa, spelt, triticale, amaranth, and barley.

For lack of a better term, I call these "intermediate" carbohydrates. They are not as bad as wheat, etc., but nor are they good. They will still increase blood glucose, small LDL, triglycerides, etc., just not as much as the worst carbohydrates.

The difference is relative. Say we compare the one-hour blood glucose effects of 1 cup of wheat flour product vs. one cup of quinoa. Typical blood sugar after wheat product: 180 mg/dl. Typical blood sugar after quinoa: 160 mg/dl--better but still pretty bad.

Some people are so carb-sensitive that they should avoid even these so-called intermediate carbohydrates. Others can have small indulgences, e.g., 1/2 cup, and not generate high blood sugars.

Heroin, Oxycontin, and a whole wheat bagel

For a substantial proportion of people who remove wheat from their diet, there is a distinct and unpleasant withdrawal syndrome. Here are the comments of Heart Scan Blog reader, Scott, from Texas:

Hello Dr. Davis,

I've been experimenting with diet, converging upon a Paleo type diet, but I keep running into problems. I have isolated the problem to cutting out wheat.

Sugar, rice, fruit, corn, potatoes, etc. are relatively ok to add or remove from the diet, but cutting out wheat in particular brings on a moderate headache with heavy fatigue all day long. This resembles the wheat withdrawal symptoms I found on your blog. As I write this, I'm on day 8 of wheat-free. I consume a fair variety of meat and veggies each day with a moderate amount of white rice for carbs. Perhaps a bowl of corn flakes with milk and half a bar of dark chocolate a day. I've learned from experience over the past 5 months or so that none of these foods affect the withdrawal. It's purely wheat.

My question is, what is the range of times for withdrawal symptoms that you've heard from different people? Has there been anyone who never recovered from the wheat withdrawal symptoms even after many months?

It's very tough to get work done like this, and even though my body and head feel much healthier in general, my sinuses have cleared, don't have to take a big nap after I eat, etc., I don't want to go down a path where this is the way things are going to be forever. 



People who have never experienced wheat withdrawal pooh-pooh the effect. But, for about 30% of people, wheat withdrawal is a real, palpable, and sometimes incapacitating experience.

Beyond removing an exceptionally digestible carbohydrate that yields blood sugar rises higher than nearly any other known food (due to the unique amylopectin structure of wheat-derived carbohydrate), wheat withdrawal is a form of opiate withdrawal, somewhat like stopping heroin, Oxycontin, and other opiates. Stop eating whole wheat toast for breakfast, whole grain sandwiches for lunch, or whole grain pasta for dinner, and the flow of exorphins, i.e., exogenous morphine-like compounds, stops. You experience dysphoria (sadness, unhappiness), mental "fog," inability to concentrate, fatigue, and decreased capacity to exercise. It is milder than withdrawal from prescription opiates. Unlike withdrawal from more powerful opiates like heroine, there are, thankfully, no seizures or hallucinations. There are also no deaths.

In my experience, most people get through with wheat withdrawal in about 5 days. An occasional person will struggle for as long as 4 weeks. Thankfully for Scott, I've never seen it last longer than 4 weeks. (Interestingly, people who survive the withdrawal syndrome are often prone to a peculiar re-exposure phenomenon that I will discuss in future, i.e., they get sick upon re-exposure.)

The modern dwarf mutant variant of Triticum aestivum (that our USDA urges us to eat more of) contains greater proportions of gluten proteins compared to wheat pre-1970; glutens are the source of wheat-derived exorphins.

Incidentally, a drug company should be releasing a drug in the next year that will contain naltrexone, an oral opiate blocking drug, for a weight loss indication. They claim it is a blocker of the "mesolimbic reward system." I say it's a blocker of wheat exorphins.

The five most powerful heart disease prevention strategies

You've seen such lists before: 5 steps to prevent heart disease or some such thing. These lists usually say things like "cut your saturated fat," eat a "balanced diet" (whatever the heck that means), exercise, and don't smoke.

I would offer a different list. You already know that smoking is a supremely idiotic habit, so I won't repeat that. Here are the 5 most important strategies I know of that help you prevent heart disease and heart attack:

1) Eliminate wheat from the diet--Provided you don't do something stupid, like allow M&M's, Coca Cola, and corn chips to dominate your diet, elimination of wheat is an enormously effective means to reduce small LDL particles, reduce triglycerides, increase HDL, reduce inflammatory measures like c-reactive protein, lose weight (inflammation-driving visceral fat), reduce blood sugar, and reduce blood pressure. I know of no other single dietary strategy that packs as much punch. This has become even more true over the past 20 years, ever since the dwarf variant of modern wheat has come to dominate.

2) Achieve a desirable 25-hydroxy vitamin D level--Contrary to the inane comments of the Institute of Medicine, vitamin D supplementation increases HDL, reduces small LDL, normalizes insulin and reduces blood sugar, reduces blood pressure, and exerts potent anti-inflammatory effects on c-reactive protein, matrix metalloproteinase, and other inflammmatory mediators. While we also have drugs that mimic some of these effects, vitamin D does so without side-effects.

3) Supplement omega-3 fatty acids from fish oil--Omega-3 fatty acids reduce triglycerides, accelerate postprandial (after-meal) clearance of lipoprotein byproducts like chylomicron remnants, and have a physical stabilizing effect on atherosclerotic plaque.

4) Normalize thyroid function--Start with obtaining sufficient iodine. Iodine is not optional; it is an essential trace mineral to maintain normal thyroid function, protect the thyroid from the hundreds of thyroid disrupters in our environment (e.g., perchlorates from fertilizer residues in produce), as well as other functions such as anti-bacterial effects. Thyroid dysfunction is epidemic; correction of subtle degrees of hypothyroidism reduces LDL, reduces triglycerides, reduces small LDL, facilitates weight loss, reduces blood pressure, normalizes endothelial responses, and reduces oxidized LDL particles.

5) Make exercise fun--Not just exercise for the sake of exercise, but physical activity or exercise for the sake of having a good time. It's the difference between resigning yourself to 30 minutes of torture and boredom on the treadmill versus engaging in an activity you enjoy and look forward to: go dancing, walk with a friend, organize a paintball tournament outdoors, Zumba class, plant a new garden, etc. It's a distinction that spells the difference between finding every excuse not to do it, compared to making time for it because you enjoy it.

Note what is not on the list: cut your fat, eat more "healthy whole grains," take a cholesterol drug, take aspirin. That's the list you'd follow if you feel your hospital needs your $100,000 contribution, otherwise known as coronary bypass surgery.

Topping up your vitamin D tank

Now that my vitamin D replacement experience dates back nearly 5 years, I've been witnessing an unusual phenomenon:

The longer you take vitamin D, the less you need.

Let me explain. You take 10,000 units D3 in gelcap form. 25-hydroxy vitamin D levels, checked every 6 months, have remained consistently between 60 and 70 ng/ml. Three years into your vitamin D experience and 25-hydroxy vitamin D level rises to 98 ng/ml--an apparent need for less vitamin D.

So we cut your intake from 10,000 units per day to 8000 units per day. Another 25-hydroxy vitamin D level 6 months later: 94 ng/ml. We cut dose again to 6000 units, followed by another 25-hydroxy vitamin D level of 66 ng/ml.

This has now happened in approximately 20% of the people who have been taking vitamin D for 3 or more years. I know of no formal analysis of this effect, what I call the "topping up" phenomenon. Reasoned simply, it seems to me that, once your vitamin D "tank" is topped up (i.e., tissue stores have been replenished), it requires less to keep it full.

No one has experienced any adverse consequence of this topping up effect though it has potential for some people to develop toxic levels if 25-hydroxy vitamin D levels are not monitored long-term. In my office, I measure 25-hydroxy vitamin D levels every 6 months.

It means that long-term monitoring of 25-hydroxy vitamin D is crucial to maintain favorable and safe levels.

Thirteen catheterizations later

When I first met her, Janet couldn't stop sobbing. She'd just been through her 10th heart catheterization in two years.

It started with chest pains at age 56, prompting her first heart catheterization that uncovered severe atherosclerotic blockages in all three coronary arteries. Her cardiologist advised a bypass operation.

Six months after the bypass operation, Janet was back with more chest pains, just as bad as before. Another heart catherization showed that two of the three bypass grafts had failed. The third bypass graft contained a severe blockage that required a stent, along with multiple stents in the two now unbypassed arteries.

In the ensuing 18 months, Janet returned for 8 additional catheterizations, each time leaving the hospital with one or more stents.

Janet's doctor was puzzled as to why her disease was progressing so aggressively despite Lipitor and the low-fat diet provided by the hospital dietitian. So he had Janet undergo lipoprotein testing (NMR):

LDL particle number: 3363 nmol/L
Small LDL particle number: 2865 nmol/L
HDL cholesterol: 32 mg/dl
Triglycerides: 344 mg/dl
Fasting blood glucose 118 mg/dl
HbA1c 5.8%

Unfortunately, Janet's doctor didn't understand what these values meant. He pretty much threw his arms up in frustration. That's when I met Janet.

From her lipoprotein panel and other values, it was clear to me that Janet was miserably carbohydrate-sensitive and carbohydrate-indulgent, as demonstrated by the extravagant quantity (2865 nmol/L) and proportion (2865/3363, or 85%) of small LDL, the form of LDL particles created by carbohydrate exposure. Janet struggled with depression over the years and had been using carbohydrate foods as "comfort" foods, often resorting to cookies, pies, cakes, breads, and other wheat-containing foods for emotional solace.

It took a bit of persuasion to convince Janet that it was low-fat, "healthy whole grains," as well as comfort foods, that had led her down this path. I also helped Janet correct her severe vitamin D deficiency, mild thyroid dysfunction, and lack of omega-3 fatty acids.

Since meeting Janet and instituting her new prevention program, she has undergone three additional catheterizations (performed by another cardiologist), all performed for chest pain symptoms that struck during periods of emotional stress. All showed . . . no significant blockage. (Apparently, the repeated "need" for stents triggered a Pavlovian response: chest pain = "need" for yet more stents.)

In short, correction of the causes of coronary atherosclerotic plaque--small LDL, vitamin D deficiency, omega-3 fatty acid deficiency, and thyroid dysfunction--and Janet's disease essentially ground to a halt.

Imagine, instead, that Janet had undergone 1) a heart scan to identify hidden coronary plaque 5-10 years before her first heart procedure, then 2) corrected the causes before they triggered symptoms and posed danger. She might have been spared an extraordinary amount of life crises, hospital procedures, expense (nearly $1 million), and emotional suffering.

High blood pressure vanquished

Heart Scan Blog reader, Eric, related his blood pressure success story to me:

I'm 34 and have been battling chronic hypertension (systolic 150-200, depending on my anxiety levels) even with multiple prescriptions for over a decade now. I've seen four different cardiologists, all stumped as to what is causing my hypertension. First, they suspected coarctation of my aorta [a constriction in the aorta], but an angiogram determined blood pressure readings were the same on both sides of the narrowing.

The second angiogram performed last year to determine if my coarct had worsened determined that it had not, but that my aorta had calcium build up. The cardiologist was stumped because he told me he hasn't seen calcium in a patient so young. Needless to say, this scared me to death, with my wife being pregnant with our first child. I asked if it could be reversed and he didn't know so he sent me to get a Berkeley lab.

The Berkeley came back with LDL 91, HDL 41, Triglycerides 73, CRP 4.1, vit D 26. The doctors weren't very knowledgeable about explaining to me what these meant and how I could correct the low vit D and high CRP. They told me to follow the low-fat diet recommended by Berkeley. Well I've already tried the DASH diet and didn't like how I felt or my energy levels, so I didn't transition.

I was at a loss until I encountered your blog and it was truly a gift. It was a refreshing feeling to meet a knowledgeable Dr. who knew what I was going through and seems to truly care about reversing calcium in the heart (something I never got from my any of my cardiologists). With your blog I have an appointment to get a heart scan here in CO and take that number along with my Berkeley results and join Track Your Plaque.

For the past 2 weeks I've been following your advice by taking a D3+K2 supplement with Omega3 Fish oil and avoiding all grain, wheat, sugar and I'm already down 4lbs to 223.5lbs at 6'5" tall and my blood pressure readings have been 128/54 and 129/60 the past 2 days! With your help I may not have the dark future my father had: dead at 48 with a massive heart attack.

Stay on the look out because I look forward to telling you how I'm one of your top calcium losers!

Eric, Colorado


Conventional medical care fails at so many levels for so many people. While Eric's doctors were busy contemplating the next angiogram, they were neglecting several crucial aspects of his health.

It's really not that tough. But it can mean doing the opposite of what conventional "wisdom" tell us.

DHEA and Lp(a)

DHEA supplementation is among my favorite ways to deal with the often-difficult lipoprotein(a), Lp(a).

DHEA is a testosterone-like adrenal hormone that declines with age, such that a typical 70-year old has blood levels around 10% that of a youthful person. DHEA is responsible for physical vigor, strength, libido, and stamina. It also keeps a lid on Lp(a).

While the effect is modest, DHEA is among the most consistent for obtaining reductions in Lp(a). A typical response would be a drop in Lp(a) from 200 nmol/L to 180 nmol/L, or 50 mg/dl to 42 mg/dl--not big responses, but very consistent responses. While there are plenty of non-responders to, say, testosterone (males), DHEA somehow escapes this inconsistency.

Rarely will DHEA be sufficient as a sole treatment for increased Lp(a), however. It is more helpful as an adjunct, e.g., to high-dose fish oil (now our number one strategy for Lp(a) control in the Track Your Plaque program), or niacin.

Because the "usual" 50 mg dose makes a lot of people bossy and aggressive, I now advise people to start with 10 mg. We then increase gradually over time to higher doses, provided the edginess and bossiness don't creep out.

The data documenting the Lp(a)-reducing effect of DHEA are limited, such as this University of Pennsylvania study, but in my real life experience in over 300 people with Lp(a), I can tell you it works.

And don't be scared by the horror stories of 10+ years ago when DHEA was thought to be a "fountain of youth," prompting some to take megadose DHEA of 1000-3000 mg per day. Like any hormone taken in supraphysiologic doses, weird stuff happens. In the case of DHEA, people become hyperaggressive, women grow mustaches and develop deep voices. DHEA doses used for Lp(a) are physiologic doses within the range ordinarily experienced by youthful humans.

No more cookies

Jeanne enjoyed her Christmas holidays. She especially liked sharing the cookies she made for her grandchildren, sneaking 2 or 3 every day over a couple of weeks. On top of this, she enjoyed the Christmas candy, egg nog, leftover stuffing and cranberry sauce, topped off with a night of nutritional debauchery on New Year's Eve.

Lipid panel in October:

Total cholesterol 146 mg/dl
LDL cholesterol 72 mg/dl
HDL cholesterol 64 mg/dl
Triglycerides 49 mg/dl

Lipid panel in early January:

Total cholesterol 229 mg/dl
LDL cholesterol 141 mg/dl
HDL cholesterol 59 mg/dl
Triglycerides 147 mg/dl


I call the holidays The Annual Wheat and Sugar Frenzy. It's the carbohydrates, especially those from products made of wheat and sucrose, that caused the marked shifts in Jeanne's lipid patterns. Let's take each parameter apart:

--Triglycerides go up due to de novo lipogenesis, liver conversion of carbohydrates into triglycerides. Triglycerides enter the bloodstream as VLDL particles which, in turn, interact with LDL and HDL.

--LDL goes up because carbohydrate exposure increases VLDL, followed by conversion to LDL. The triglyceride-rich LDL created is converted to small LDL particles. Had we measured small LDL changes in Jeanne, we likely would have measured something like an increase (by NMR) from 800 nmol/L to 1600 nmol/L, a carbohydrate effect.

--The increased VLDL also makes HDL triglyceride-rich, cause more rapid degradation of HDL particles. (It also makes them smaller, like LDL.) Given sufficient time (a few more months), HDL would drop into the 40's.

--Total cholesterol changes reflect the composite of the above numbers. (Total cholesterol = LDL cholesterol + HDL cholesterol + Trig/5) (Note that, as HDL drops, so will total cholesterol; that's why this value is worthless and should be ignored.)

So don't be surprised by the above distortions after a period of carbohydrate indulgence. Although your unwitting primary care doc will see such changes as opportunity for Lipitor, it is nothing more than the cascade of effects from a carbohydrate-driven distortion of lipoproteins.

How to become diabetic in 5 easy steps

If you would like to become diabetic in as short a time as possible, or if you have someone you don't like--ex-spouse, nasty neighbor, cranky mother-in-law--whose health you'd like to booby trap, then here's an easy-to-follow 5-step plan to make you or your target diabetic.


1) Cut your fat and eat healthy, whole grains--Yes, reduce satiety-inducing foods and replace the calories with appetite-increasing foods, such as whole grain bread, that skyrocket blood sugar higher than a candy bar.

2) Consume one or more servings of juice or soda per day--The fructose from the sucrose or high-fructose corn syrup will grow visceral fat and cultivate resistance to insulin.

3) Follow the Institute of Medicine's advice on vitamin D--Take no more than 600 units vitamin D per day. This will allow abnormal levels of insulin resistance to persist, driving up blood sugar, grow visceral fat, and allow abnormal inflammatory phenomena to persist.

4) Have a bowl of oatmeal or oat cereal every morning--Because oat products skyrocket blood sugar, the repeated high sugars will damage the pancreatic beta cells ("glucose toxicity"), eventually impairing pancreatic insulin production. (Entice your target even further: "Would you like a little honey with your oatmeal?") To make your diabetes-creating breakfast concoction even more effective, make the oatmeal using bottled water. Many popular bottled waters, like Coca Cola's Dasani or Pepsi's Aquafina, are filtered waters. This means they are devoid of magnesium, a mineral important for regulating insulin responses.

5) Take a diuretic (like hydrochlorothiazide, or HCTZ) or beta blocker (like metoprolol or atenolol) for blood pressure--Likelihood of diabetes increases 30% with these common blood pressure agents.

There you have it! Perhaps we should assemble a convenient do-it-yourself-at-home diabetes kit to help, complete with several servings of whole grain bread, a big bottle of cranberry juice, some 600 unit vitamin D tablets, a container of Irish oatmeal, and some nice bottled water.
Fish oil: The natural triglyceride form is better

Fish oil: The natural triglyceride form is better

If you have a choice, the triglyceride form of fish oil is preferable. The triglyceride form, i.e., 3 omega-3 fatty acids on a glycerol "backbone," is the form found in the body of fish that protects them from cold temperatures (i.e., they remain liquid at low ambient temperatures).

Most fish oils on the market are the ethyl ester form. This means that the omega-3 fatty acids have been removed from the glycerol backbone; the fatty acids are then reacted with ethanol to form the ethyl ester.

If the form is not specified on your fish oil bottle, it is likely ethyl ester, since the triglyceride form is more costly to process and most manufacturers therefore boast about it. Also, prescription Lovaza--nearly 20 times more costly than the most expensive fish oil triglyceride liquid on a milligram for milligram basis--is the ethyl ester form. That's not even factoring in reduced absorption of ethyl esters compared to triglyceride forms. Remember: FDA approval is not necessarily a stamp of superiority. It just means somebody had the money and ambition to pursue FDA approval. Period.

Taking any kind of fish oil, provided it is not overly oxidized (and thereby yields a smelly fish odor), is better than taking none at all. All fish oil will reduce triglycerides, accelerate clearance of postprandial (after-eating) lipoprotein byproducts of a meal (via activation of lipoprotein lipase), enhance endothelial responsiveness, reduce small LDL particles, and provide a physical stabilizing effect on atherosclerotic plaque.

But if you desire enhanced absorption and potentially lower dose to achieve equivalent RBC omega-3 levels, then triglyceride forms are better.

Here are cut-and-pasted abstracts of two of the studies comparing forms of fish oil.

Bioavailability of marine n-3 fatty acid formulations.

Dyerberg J, Madsen P, Moller JM et al. 
Department of Human Nutrition, Faculty of Life Sciences, University of Copenhagen, Copenhagen, Denmark.

Abstract

The use of marine n-3 polyunsaturated fatty acids (n-3 PUFA) as supplements has prompted the development of concentrated formulations to overcome compliance problems. The present study compares three concentrated preparations - ethyl esters, free fatty acids and re-esterified triglycerides - with placebo oil in a double-blinded design, and with fish body oil and cod liver oil in single-blinded arms. Seventy-two volunteers were given approximately 3.3g of eicosapentaenoic acid (EPA) plus docosahexaenoic acid (DHA) daily for 2 weeks. Increases in absolute amounts of EPA and DHA in fasting serum triglycerides, cholesterol esters and phospholipids were examined. Bioavailability of EPA+DHA from re-esterified triglycerides was superior (124%) compared with natural fish oil, whereas the bioavailability from ethyl esters was inferior (73%). Free fatty acid bioavailability (91%) did not differ significantly from natural triglycerides. The stereochemistry of fatty acid in acylglycerols did not influence the bioavailability of EPA and DHA.
(Full text of the Dyerberg et al study made available at the Nordic Naturals website here.)



Eur J Clin Nutr 2010 Nov 10. 

Enhanced increase of omega-3 index in response to long-term n-3 fatty acid supplementation from triacylglycerides versus ethyl esters.

Neubronner J, Schuchardt JP, Kressel G et al. 
Institute of Food Science and Human Nutrition, Leibniz Universität Hannover, Am Kleinen Felde 30, Hannover, Germany.

Abstract

There is a debate currently about whether different chemical forms of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are absorbed in an identical way. The objective of this study was to investigate the response of the omega-3 index, the percentage of EPA+DHA in red blood cell membranes, to supplementation with two different omega-3 fatty acid (n-3 FA) formulations in humans. The study was conducted as a double-blinded placebo-controlled trial. A total of 150 volunteers was randomly assigned to one of the three groups: (1) fish oil concentrate with EPA+DHA (1.01?g+0.67?g) given as reesterified triacylglycerides (rTAG group); (2) corn oil (placebo group) or (3) fish oil concentrate with EPA+DHA (1.01?g+0.67?g) given as ethyl ester (EE group). Volunteers consumed four gelatine-coated soft capsules daily over a period of six months. The omega-3 index was determined at baseline (t(0)) after three months (t(3)) and at the end of the intervention period (t(6)). The omega-3 index increased significantly in both groups treated with n-3 FAs from baseline to t(3) and t(6) (P < 0.001). The omega-3 index increased to a greater extent in the rTAG group than in the EE group (t(3): 186 versus 161% (P < 0.001); t(6): 197 versus 171% (P < 0.01)). Conclusion: A six-month supplementation of identical doses of EPA+DHA led to a faster and higher increase in the omega-3 index when consumed as triacylglycerides than when consumed as ethyl esters.

Comments (43) -

  • Flavia

    2/2/2011 2:05:51 PM |

    Thank you for the heads up! Once I exhaust my fish oil, I will switch to the triglyceride form.

    I wanted to drop by and thank you for scaring the sh*t out of me regarding a high wheat carby diet and atenolol.

    My blood pressure seems to be genetic and quite stubborn, but since taking your advice (plus some supplements) I have been able to lower it from 150/100 to around 128/92 and going down.

    Something I have also noticed...my pulse used to be quite high all the time- Around 80-90 (I am 29). Now it is always in the 60s. Could this be due to the supplements? Or low carb? Is this healthy?

  • Anonymous

    2/2/2011 2:27:44 PM |

    Which brands do you recommend?
    I can't find where my cotsco fish oil states which type it is?

  • TedHutchinson

    2/2/2011 2:28:02 PM |

    In case anyone else uses Nature's Answer, I've just contacted their customer services who say
    " This product IS the triglyceride form.
    Thank you,
    Ellen Kamhi PhD RN"
    At $14.95 from Iherb 16 fl oz it's good price and tastes fine.
    CODE WAB666 saves $5 off initial IHERB purchase. Maybe cheaper elsewhere but IHerb ship cheap to UK.

  • Dr. William Davis

    2/2/2011 3:21:47 PM |

    Hi, Flavia--

    Those are all positive changes, including the drop in heart rate. It reflects a reduction in adrenaline. A reduction in heart rate is a powerful marker for overall health.


    Anon-

    Costco is the ethyl ester. It is a fine brand, just less well absorbed, of course.

  • Anonymous

    2/2/2011 4:03:36 PM |

    I have some vitamin D gelcaps and they smell like fish. Are these oxidized too?

  • Michael

    2/2/2011 4:19:33 PM |

    You say not "overly oxidized" at one point in the post.  

    I am generally concerned about the fish oil I buy being oxidized.  There is a brand of fermented fish oil which purports to avoid this problem of oxidation with storage.  

    Is it your position that concerns about oxidation are sometimes (or at least mine) are overblown?  Or that the oxidation that occurs with normal storage etc. is acceptable?

  • Jack

    2/2/2011 4:26:08 PM |

    Hi Dr Davis,

    If I eat high omega-3 wild salmon once a week, high omega-3 wild sardines once a week, grass pasture butter with 225mg of naturally occurring omega-3 per serving, and organic eggs that have a bit in there as well, do you think I am getting enough for a healthy ratio? I also take the Green Pastures FLCO and HVBO blend.

    I do not eat ANY vegetable oils, ever. I only use coconut oil and ghee to cook, so my O6 intake has got to be pretty low.

    What are your thoughts on being able to obtain adequate levels of healthy omega-3 from foods where it is naturally occurring?

    Thanks,
    Jack Kronk

  • Anonymous

    2/2/2011 4:29:17 PM |

    Dr. Davis (or others): Based on what you say, since my fish oil brand is silent on what kind, I'm assuming it's the ethyl ester form.  But, I just wanted to check to see if anyone knows for sure: the brand I've been using is Carlson ("The Very Finest Fish Oil"), liquid form in a bottle - not the capsules.

  • Anonymous

    2/2/2011 5:01:52 PM |

    I take the Carlson lemon cod liver oil. Is their any disadvantage to this over fish oil?

  • Anonymous

    2/2/2011 5:13:20 PM |

    What about Krill oil?

  • Flavia

    2/2/2011 6:00:08 PM |

    Dr. Davis said: "Those are all positive changes, including the drop in heart rate. It reflects a reduction in adrenaline."

    No wonder every time I take my BP at Walmart my pulse is higher!!

  • Anonymous

    2/2/2011 7:01:13 PM |

    Where does krill oil fit into this?

  • Might-o'chondri-AL

    2/2/2011 7:18:24 PM |

    Natural Factors omega-3 is ethyl ester processed form.

  • Lucy

    2/2/2011 7:21:44 PM |

    Dr. Davis,

    Can you comment on the recommended dose for an ApoE 3/4 like me?  I've been told by a BHL educator not take any, but I don't like the idea of that.  I was thinking I may try just 500-600mg/day.  Of course, I've been using Kirkland's which apparently is less bioavailable anyway...

  • Vin Kutty

    2/2/2011 10:53:27 PM |

    As a nutritionist who's worked in the fish oil industry for 20+ years, I may be able to add some insight.

    Yes, Triglyceride (TG) and Re-esterified triglyceride (rTG) forms are better absorbed than the Ethyl Ester form (EE). At least in the short term. And the Phospholipid (PL) form is roughly 50% better absorbed than rTG.

    Then why don't we all take PL form found in Krill oil? Well, there isnt much Omega-3 in Krill to begin with. And the PL-bound Krill Omega-3 are very temperature sensitive, so you won't see anyone concentrating it.

    BTW, the folks at Neptune Krill Oil have some unpublished data that shows the difference between TG and EE diminishes to insignificance over time.

    TG form is natural, no need for pre-conversion before absorption. That does not mean that your body won't use EE. It will. Just requires another step. It's just that TRUE natural TG is not very concentrated. Usually about 30% Omega-3 or so. Anything above 50% is likely to be EE. But most EU nations only allow TG form, so if you want a concentrated fish oil, you jack it up to 60 or 70% as EE and then re-esterify it. Additional process and can be done, but it will cost you. I'm currently working with some 90% rTG material. This raw material is 10 to 20X more expensive than what goes into Walmart brand fish oil.

    I'm guessing (but it's a good guess) but more than 95% of fish oil studies are done on EE form. So all the benefits you've read about don't go out the window if you are taking EE instead of TG. Forget Lovaza, next-gen EPA-based drugs like Epadel, Epanova and still-pending AMR-101 are all EE.

    Most fish oils, if not all, sold at retail stores are EE. Because it is cheaper. Specialty and online sources are your best bet for TG and rTG.  Go to 3rd party testing IFOS website and look under product type - it will tell you if it is EE or TG. http://www.ifosprogram.com/ifos/consumerreport.aspx

    Issues with the Dyerberg study: 1) 2 weeks is way too short a duration to figure this out. 2) they did not compare TG oil to a placebo (corn oil?). Instead, they compared it to EE. Comparison to placebo would have put things in perspective. The Neubronner paper addresses this issue.

  • Anonymous

    2/2/2011 11:19:46 PM |

    As I understand it, part of the tradeoff involves potency and how much EPA/DHA you can pack into a capsule. Ethyl esters are going to be more "compact" than trigylceride chains. I take Life Extension brand, and I honestly don't know which form it is. Perhaps it is the ester form. I get 3600 mg of combined Omega 3 activity from six capsules a day. If the trigyleride form would mean 10 or 12, I don't know that the trade is worth it in money or hassle. I know some of these other brands like Pharmax are supposed to be good, but I draw the line at doing "shots" of unencapsulated fish oil!

    As an aside, does anyone have any suggestions for me? I'm 40, pretty close to ideal weight, non diabetic and I still struggle with high TG, now 292 even with fish oil and 1 gram a day of IR niacin... Not a big wheat eater either although I do have a nasty breakfast cereal habit.

  • Ned Kock

    2/2/2011 11:40:30 PM |

    It is worth noting that as little as 38 g of sardines provide more "net" O3, of the "good" type, than 2 fish oil softgels: bit.ly/gsaJI3.

  • Anonymous

    2/3/2011 1:00:28 AM |

    Dr Davis

    do you know which is the best KOsher fish oil?
    most of brands have vegetarian capsules, but there is a liquid one from Nutri-supreme research

  • Davide Palmer

    2/3/2011 3:21:31 AM |

    Thank you, thank you. At least there are some honest doctors (as Dr. Davis) who are not robots and don't view the FDA's stamp of approval as divinely authoritative and perfect.

  • Rick

    2/3/2011 3:53:04 AM |

    Just to check: Are triglyceride forms always in bottles? Or can we also get them in capsules?

  • Anonymous

    2/3/2011 5:02:07 AM |

    While exploring this subject I came upon this article which clearly expands on the difference between TG and EE fish oil forms.

    http://www.ascentahealth.com/health-science/science-articles/fish-oil-triglycerides-vs-ethyl-esters-as-nature-intended

  • Donald Kjellberg

    2/3/2011 6:09:27 AM |

    Rick said...
    "Just to check: Are triglyceride forms always in bottles? Or can we also get them in capsules?"

    To say it lightly, I prefer to get them off the back of my fish like wild caught salmon but especially with sardines like Ned referred to since the mercury content is extremely low to nonexistent.

    Also, it may be more beneficial consuming supplements naturally in whole foods, if you can get enough. That in itself is not an easy endeavor. Don't get me wrong, I do take my fish oil capsules especially when consuming high 6:3 ratio foods but am trying to incorporate more nutrient dense foods that contain known rich supplement content.

    It would be nice to see more research addressing synergistic effects of nutrients in foods like Dr. Price's findings regarding fermented cod liver oil and high vitamin butter oil.

  • Dr. William Davis

    2/3/2011 3:02:12 PM |

    Hi, Jack--

    No, not even close.

    It also depends on why you take fish oil and/or obtain omega-3 fatty acids and whether or not you have coronary atherosclerotic plaque, among other things.

  • Jack

    2/3/2011 3:16:28 PM |

    The only brand of canned salmon/tuna and canned sardines I eat is from Wild Planet. I am not affiliated with them and this is not an advertisement, but they really seem to do the whole process perfectly. They also do not add any vegetable oil or water. They have very low mercury content and very high natural omega-3 content. The omega-3 in their tuna is even higher than the salmon. Also, they explain the importance of low mercury and how it all works.

    Have a look at their site:

    Wild Planet

    cheers,
    Jack Kronk

  • Davide Palmer

    2/3/2011 4:34:05 PM |

    I often wonder if krill oil is an even more superior source of DHA and EPA simply because they come within the matrix of phospholipids. Phospholipids, of course, are what makes up our cell membranes, making krill oil extremely bio-available to the cells. I guess we will have to wait for tests to confirm.

  • Sara

    2/3/2011 7:11:36 PM |

    The triglyceride form is too expensive for me.
    I'll pop an add'l ethyl ester gelcap daily and be done with it.

  • Rick

    2/3/2011 10:06:10 PM |

    Does the same caveat apply to krill oil or to seal oil?

  • Anonymous

    2/4/2011 1:35:33 PM |

    Great Detailed discussion of fish oil
    Can someone please dumb it down for me and just recommend a few brands?

  • John Townsend

    2/4/2011 7:17:46 PM |

    Dr. Davis:

    I'm curious to know where GNC's so-called "Triple Strength Fish Oil"
    product ranks. It comes in a softgel form, each capsule containing EPA+DHA strength of 900mg. It has only a slight hint of fishy-ness in taste. It's not clear to me from the bottle label whether it's in a triglyceride form. I'm not necessarily an advocate of GNC products which are not generally a bargain by any means, but have been satisfied with their quality.

  • Timothy Johanek

    2/5/2011 3:24:53 PM |

    I am a Technical Representative from Carlson and the following fish oils are all TG or rTG form:

    -EPA Gems

    -Super DHA Gems

    -MedOmega Fish Oil 2800

    -All Mothers and Kids products

    -All Very Finest Fish Oil products

    -All Cod Liver Oil products

    -All Salmon Oil products

    -Smart Catch softgels

    -CalaOmega liquid (calamari oil)


    The following products are EE:

    -Super Omega-3 Gems

    -Elite Omega-3 Gems

    -CalaOmega Softgels (calamari oil)

    -CalaDHA Sofgels (calamari oil)

  • Anonymous

    2/6/2011 2:08:07 PM |

    "struggle with high TG, now 292 even with fish oil and 1 gram a day of IR niacin... "

    1grm just is not high enough in my opinion.  I take 2grms of Now brand Niacin and had a 30% reduction in my Trigs. At C$7 for 100 x 500mg tablets it is a cheap treatment. somewhere between 2-3grms is the level required but you can check studies at www.lipidsonline.org.

    btw.  just wanted to announce that my latest HDL is 50 !  I started with a reading of 28 and had been on a low fat no meat diet for years. Added meat, reduced wheat and other grains over the last 6 months. I guess I am a convert.
    Trevor

  • omega3tron

    2/6/2011 7:28:10 PM |

    It is nothing more than just another market gimmick -

    http://www.doctormurray.com/index.php?option=com_content&view=article&id=52:the-ethyl-ester-vs-triglyceride-form-of-fish-oils

  • Bob Savage

    2/6/2011 7:59:46 PM |

    Timothy Johanek,  Do you have any reference to independent test that proof Carlson's products in TG/rTG form?

  • Anonymous

    2/7/2011 5:31:15 PM |

    I'm also interested if Dr. Davis can comment here or in one of his articles about the proper dosing for Apo 3/4 people.

    I do notice that lowish doses (1 g or less) doesn't seem to affect my LDL much negatively. However, if I go high, say 3g EPA/DHA or so, then my LDL tends to rise... and it's not the particle size thing giving a false high reading, as it's measured by VAP.

    Somewhat oddly, I have noticed that the EE form causes this rise more often than the TG form, but that could be coincidence.

    And for those interested:

    Barleans (orange, low dose): TG
    (high dose): EE
    Minami (EE, except for MarineEPA)
    Nordic Naturals: rTG
    Meg3: Can be either, but unless specified, it's EE
    Epax: rTG
    Carlson has both forms, as mentioned here
    Coromega (rTG Epax oil (I think))
    Natural Factors: EE

    And pretty much all cheapo store brands are EE.

    Krill oil does absorb better than fish oil, as found in a recent study. However, it's like a 50% or so improvement only (at best), and due to price differences between fish/krill, it doesn't make much economical sense. If the esterified astaxanthin provides a specific benefit, then maybe it's worth it... but no data showing it's the EPA/DHA in krill.

  • Weierstrass

    2/9/2011 5:01:13 AM |

    That's good news on the Carlson's. I really don't understand why anyone uses fish oil capsules. You get a much better deal with the fish oil in bottles; I order mine online, 4 or 5 bottles at a time.

  • Anonymous

    2/9/2011 1:09:17 PM |

    Which brands of Fish Oils doesn't use Soy Bean oil?

  • Timothy Johanek

    2/9/2011 10:46:31 PM |

    Bob Savage,

    I'm not aware of any third party tests that have been done.  I am certain that I am correct though because I write the spec sheets.

    A quick test to see whether an oil is EE or not is to put it on polystyrene (styrofoam) because EE will dissolve it but TG will not.  And before anyone gets nervous, this has nothing to do with how EE oils affect your body (unless you eat or are made of styrofoam that is).

  • farseas

    2/21/2011 6:29:36 PM |

    Hi readers.  With all this talk about O3 and fish oil I thought that I would chime in with my experience.  I had a heart attack about 1.5 years ago and got a stent placed in one of my arteries.

    Since then I have been taking Walmart fish oil because it was so cheap.  My chest pains gradually receded after my heart attack and I was doing really great for awhile.  I was actually working pretty hard, doing aerobics for about 30 minutes and lifting weights for about 20 minutes.  My weight on a low carb diet went from 305 to 260 so far.

    I have been on Plavix but my cardiologist told me I could back off from it slowly, so I started taking 6 capsules of Walmart fish oil, 400mg VE, 1000 mg VC, 325 mg aspirin, and only half a 75 mg Plavix.

    Then, I went to Walmart and got a new supply of fish oil.  Upon taking it I started to get pretty strong chest pains and had to stop working out.  I did not associate the problem with the fish oil though.

    One day I came to this blog and read about rancidity in fish oil.  I broke open one of the fish oil caps from Walmart and was overwhelmed by the spoiled fish smell.  I immediately stopped taking the oil and my chest pains gradually diminished.

    My question is whether I am likely right that it was the oxidized fish oil causing the chest pains?  This wasn't a very rigorously controlled experiment. I am not looking for an absolute answer but is it possible that rancid fish oil can cause chest pains?

  • Anonymous

    2/23/2011 12:56:27 PM |

    Farseas that is very interesting. Glad to hear you have been doing better.

    in for answer on rancid oil.

    I've been using Ascenta fish oil. They're based out of nova scotia. All their oils are in triglyceride form.

    Ascentahealth.com....although can be found much cheaper elsewhere like iherb.com

  • Anonymous

    2/23/2011 12:56:39 PM |

    Farseas that is very interesting. Glad to hear you have been doing better.

    in for answer on rancid oil.

    I've been using Ascenta fish oil. They're based out of nova scotia. All their oils are in triglyceride form.

    Ascentahealth.com....although can be found much cheaper elsewhere like iherb.com

  • Anonymous

    2/25/2011 10:30:39 AM |

    Should we worry about this?
    Fish Oil Increases Risk of Colitis, Colon Cancer in Mice

    http://www.emaxhealth.com/1275/fish-oil-increases-risk-colitis-colon-cancer-mice

  • john

    4/9/2011 6:49:51 AM |

    Thank you so much for the post. Fish oil is best for our health.This is very informative blog.
    -fish oil

  • Gailtoo

    4/27/2013 1:19:39 PM |

    Personally, I don't put a lot of faith in studies done on mice. Their biological makeup is different than ours and these studies often give mice mega-doses of whatever they are testing for over very short periods of time, which could have adverse consequences for anyone. I like human trials better.

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