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.
Organic really IS better

Organic really IS better

If you have any doubts about the value of organic foods vs. conventionally-grown foods, then take a look at the findings from a USDA--Yes, USDA--sponsored study.

In this study, the nutritional content of organic vs. conventionally-grown blueberries were compared. Ironically, these observations come from the USDA's Genetic Improvement of Fruits and Vegetables Laboratory of the Produce Quality and Safety Laboratory.

Their findings (all values expressed as weight per 100 grams fresh weight blueberries, or a bit less than 1/4 cup):


Total phenol content (e.g, flavonoids):

Organic: 319.3 mg
Conventional: 190.3 mg

Organic blueberries had 68% greater phenol content.


Total anthocyanins (an important class of flavonoids):

Organic: 131.2 mg
Conventional: 82.4 mg

Organic blueberries had 59% greater anthocyanin content.


Antioxidant capacity (ORAC):

Organic: 46.14 mg
Conventional: 30.8

Organic blueberries had 50% greater antioxidant capacity.


Flavonoids suspected to carry unusually potent health effects--malvidin, delphinidin, myricetin, and quercetin--were all contained in greater proportions in the organically-grown blueberries, also. These flavonoids are demonstrating pharmacologic-level health effects in preliminary studies.

Why a genetics laboratory? After all , the study findings came out heavily in favor of non-genetic, organic farming methods of growing produce. It certainly must have at least given pause to the vocal group within agriculture and the USDA that have long argued that organic produce is no different. I suspect that the laboratory will now try to recreate the nutritional value of organic through genetic manipulation of cultivars grown using conventional methods.

Regardless of the motivations behind the study, we see that there is no comparison: organic blueberries are superior in nutritional value to those grown with conventional pesticides and herbicides. While the study addressed only blueberries, the dramatic difference makes it likely that similar differences exist in other fruits and vegetables.

Coming on the Track Your Plaque website: An in-depth Special Report on the health effects of anthocyanins.

Comments (18) -

  • Anne

    8/16/2009 1:31:49 PM |

    Dear Dr Davis,

    A little off topic, but I take a good fish oil omega-3 supplement and I eat a lot of fish too (wild and therefore organic), but I've been finding disturbing reports on the net that omega-3s and fish are not so good for us after all because the oils are very easily oxidised in the body, and I'm wondering if you could comment sometime please. Here are some links about the 'dangers' of fish oil:

    http://www.paleonu.com/panu-weblog/2009/6/19/fish-oil-or-not.html

    http://high-fat-nutrition.blogspot.com/search?q=fish+oil

    http://raypeat.com/articles/articles/fishoil.shtml

    Anne

  • hb

    8/16/2009 7:37:23 PM |

    I guess there's no free link? Couldn't see it on the Lab's website.

  • moblogs

    8/17/2009 9:33:45 AM |

    Even if it wasn't better, some things definitely taste better, so the premium is apparent.

  • Nameless

    8/17/2009 6:18:17 PM |

    The problem with organic blueberries (for me) is simply finding them. Seems nobody locally sells organic blueberries.

    As for fish oil, oxidation is a potential issue, but hopefully vitamin E protects against that. There could be a concern though with very large dosing, or bad fish oils. It'd be interesting to see more krill oil vs fish oil studies, testing oxidation, lipid changes, plaque reduction, etc. Krill would, seemingly, avoid some of the oxidation problems fish oil may have.

    I would also be interested if Dr. David considered writing an article about oxidized cholesterol in the future, as it seems to get ignored a lot. But if fish oils did increase oxidized cholesterol in the body to such an extent as to increase plaque, I'd think he would have seen it by now, since most of his patients are probably taking fish oil.

  • Helena

    8/18/2009 11:54:50 PM |

    Dr Davis, I have been reading alot about blueberries and their power to lower LDL cholesterol. But we just went over the fructose and how bad that is for the cholesterol. Am I missing something special with the blueberries? I know they are high in Vitamin C and K, but is that it? I feel like I don't know what to believe regarding blueberries. Thankful for a reply. Regards, Helena

  • Dr. William Davis

    8/19/2009 1:10:31 AM |

    Hi, Helena--

    Blueberries are, on the whole, good. They have a wonderful complement of flavonoids and other nutrients.

    But, too much of a good thing . . . Then the fructose gets you. So, a modest quantity is good, just as in many other foods.

  • Dr. William Davis

    8/19/2009 1:12:11 AM |

    Anne-

    The fact remains: Large clinical studies that have looked at cardiovascular events and mortality, such as GISSI-Prevenzione, have demonstrated significant reductions.

    I agree that we must always question "conventional" wisdom. But sometimes conventional wisdom is correct.

  • Richard A.

    8/19/2009 4:02:36 PM |

    From what I understand, wild blueberries are higher in anthocyanins than are the standard blueberries. Wild blueberries are smaller in diameter than the standard.

    In southern California, Trader Joe's carries wild blueberries at a good price -- about $2.99 for 16 ozs. Indeed, TJ's has a good selection of berries at a good prices.

    http://www.wildblueberries.com/

  • Tom

    8/19/2009 4:37:04 PM |

    This website that Anne posted - http://raypeat.com/articles/articles/fishoil.shtml - raises some pretty frightening concerns about supplemental fish oils, and he includes references to studies that seem to confirm some of his points.

    Dr. Davis, have you had anopportunity to read his comments, and if yes, what is your thinking about his allegations?

    Thank you.

    Tom

  • David

    8/19/2009 4:39:26 PM |

    Hi Dr. Davis,

    Do you ever see patients that have a zero calcium score? I'm just wondering if your diet/lifestyle advice applies as well for prevention as it does for your sample of patients.  

    Thanks,
    David

  • karl

    8/19/2009 6:47:52 PM |

    Where can one find this study? Were both blueberries the same species?

    I've wondered if the smaller wild blueberries had more skin and thus more flavinoids?

  • Kismet

    8/19/2009 11:21:18 PM |

    Tom, if anything the risks of Omega-3 fatty acids might outweight their benefits in a select few: exceptionally healthy people with no risk factors whatsoever. (And never forget that dosis sola venenum facit.)
    I guess it certainly does not apply to Dr. Davis' patients and probably not to most of us.

    There may be pros and cons of taking high or moderate doses of fish oil but that is to be expected, isn't it? It's a matter of risk:benefit ratios. If large interventional trials show a mortality benefit in certain populations, then we can be sure of it.

    I've planned to read up on the issue of O-3 and those purpoted risks for quite some time (but haven't, so take my opinion FWIW).

  • Nameless

    8/20/2009 12:48:51 AM |

    I expect this will come up in the upcoming report on Anthocyanins, but a recent study has shown some nice lipid improvements using approx the equivalent to a cup of blueberries --

    http://www.ajcn.org/cgi/content/abstract/ajcn.2009.27814v1
    http://inhumanexperiment.blogspot.com/2009/08/anthocyanins-from-berries-increase-hdl.html

    The study used an extract, so they seemingly got around the fructose issue. But I think the benefits of blueberries would outweigh the relatively low levels of fructose anyway. It's really the only affordable way to get enough anthocyanins to match the study, until some pharmaceutical company gets wind of it, I guess. *Black Currant/Blueberry pills ala Lovaza*

  • Van Rensselaer

    8/20/2009 3:36:10 AM |

    Anne,

    I've read the blog posts from both Hyperlipid and Panu you've provided.  I think Peter at Hyperlipid raises some very interesting questions, but I'm really not prepared to get carried away with panic.  First, I think it's very important to keep in mind that the study Peter cites had the subjects consuming 30 ml of fish oil per day.  Total omega-3 content alone was in the neighborhood of 15 ml, if I recall correctly.  This is an enormous dose!  Furthermore, Peter makes the point that this is probably only an issue with concurrent consumption of excessive carbs and/or alcohol (and excessive omega-6, one suspects...), perhaps thus explaining why Eskimo on a traditional diet do not experience hepatic steatosis, etc... at such high levels of omega-3 intake.  As for the "raypeat" article you've provided, I can only say that I've checked out two of the papers he cites, and was left a bit puzzled.  For instance, the issue of liver toxicity he mentions (I first followed this issue based on the concern Peter @ hyperlipid raised) refers to a study using a rabbit model.  Very interesting, but it's critical to ask just how much fish oil you can force-feed a herbivore before something horrible happens.  We've seen very wrong and enduring dietary advice arise from studies using rabbit models before (ie the lipid hypothesis), so I say, let's not jump to conclusions.  The second study raypeat points us to "Mechanisms for the serum lipid-lowering effect of n-3 fatty acids" really doesn't have much to say about deleterious effects, as far as I can see.  Here's a quote for you: "The finding that n-3 fatty acids are transported from the liver as ketone bodies to a larger extent than n-6 fatty acids may thus explain that a high intake of n-3 fatty acids is not accompanied with hepatic steatosis."

    I'll keep reading up in the meanwhile.  This is a pretty fascinating subject to me.

    Oh, and I like my blueberries!  Lots of tasty organic options in the SF Bay Area.  I think Michael Pollan mentioned in one of his books that wild and organically raised plants tend to have a much higher antioxidant content because they're left to their own devices, having to fend for themselves rather than rely on the crutch of insecticides to protect them...

    Kind regards,

    Van Rensselaer

  • Van Rensselaer

    8/20/2009 3:58:24 AM |

    I forgot to say that Aronia, aka "chokeberry" is supposedly loaded with anthocyanins.  I've bought the juice from Trader Joe's before.  It's not very sweet at all and is astringent like unsweetened 100% cranberry juice.  Maybe an ideal candidate?  Low in sugar, high in anthocyanins.


    Van Rensselaer

  • Anonymous

    8/20/2009 1:26:56 PM |

    To the risks of O-3s... I understand that some genetic variants are linked to these risks.  I would very much like to know the good Doc's opinion on genetic testing and variation, and how it affects they way we metabolize certain nutrieints.  Perhaps there is no "one diet fits all" solution, but rather a "one diet fits a genotype."

  • robert

    9/3/2009 8:19:26 PM |

    Hello Readers and Dr. Davis,

    Let me try to clear up what may be a little confusion regarding the USDA organic vs conventional blueberry results for phenolic profile, total anthocyanins, and the ORAC value of each. Firstly, organic blueberries are grown and harvested from the wild and although they do get some management, they are supremely adapted to their cold northern environment and fare well enough left alone and are are "organic" by default (some managers do apply fertilizers and set fires for weed control). These wild northern bluberries are Vaccinium angustifolium. On the other hand, "conventional" blueberries are generally more southerly tetraploid and hexaploid species, Vaccinium corymbosum and V. ashei and interspecific hybrids developed for the fresh market and the emphasis on uniform, dry scar fruit with pleasing color and shelf life to withstand the rigors of the food system. The wild types have far more phenols and anthocyanins located just under their skins on a per gram basis than modern cultivars of V corymbosum and relatives. However, they also do not stand up well to the logistics of shipping fresh to millions of retail outlets and tend to "bleed" anthocyanin when disturbed. For this reason, most are canned or frozen. The point is that USDA did not really segregate their data properly if it was not a straight comparison between like species and known environments. Comparing V. angustifolium from Maine or Canada with V. corybosum used for the fresh market for these constituents does not give a clear picture that "organic" techniques automatically infer higher concentrations of components desirable for human consumption than "conventional" cropping. There is much more going on than production techniques and these conclusions do not hold as a consequence of technique when applied to the exact same cultivar. I work on the genetic improvement of blueberry and other small fruits so I have a bit of experience with this. If you want the antioxidants of blueberries on a year-round basis, buy the Dole frozen wild blueberries. BTW, I don't work for Dole. Hope this helps. Thanks.

    Robert C. Richardson, Ph.D.

  • John Adam

    9/4/2009 4:32:32 PM |

    Fwd this to anyone having cholesterol problems. This will cure in a month. They will see the results in no time. Its from no.1 company on earth. Check it for yourself. I tried it myself. It can be found here....
    http://tinyurl.com/m9n4mb

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