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A Gluten for Punishment: the Whole Grain Assault on Health

A Gluten for Punishment: the Whole Grain Assault on Health

From Few to You

Among thoughtful and informed medical providers and public alike, there is an ongoing transition toward recognizing adverse health effects from grains as being common and normal rather than rare and abnormal.  Not all medical providers, of course, support this change in perspective and some are downright hostile toward it.  Likewise, a segment of the public seems to be irritated by the gluten free trend and consider it just a silly fad. 

Yet, if medicine is to be science based, no credible medical provider can dismiss the possibility that a large proportion of the U.S. (and possibly world) population may be sensitive to certain molecules present in most grains.  Similarly, those that belittle the gluten free movement as a fad might, in fact, be an unknowing victim of grain sensitivity.

Celiac disease may have been described by the ancient physician Aretaeus of Cappadocia in the first century CE.  It was not until the 1940's, however, that the Dutch physician Willem Karel Dicke connected the disease to wheat as a result of the Dutch famine of 1944, in which wheat was scarce and those suffering from the disease seemed to dramatically improve.  Since that time, modern medicine has narrowly defined the disease as an autoimmune disease resulting from the ingestion of gliadin, a component of wheat gluten.

It is also now commonly acknowledged that many of these individuals also react to the gluten in barley, rye, and sometimes oats, as well.  This autoimmune reaction produces specific findings within the small bowel as well as specific antibodies in the blood, both of which define the diagnosis of Celiac disease.  Just in the last two decades, the estimated prevalence of this gluten-related autoimmune disease has gone from 1/6000 to 1/130 or even 1/100 people in the U.S..[1]  At 1% of the population, celiac disease is not exactly a rare condition.  However, celiac disease may be the tip of the iceberg when it comes to grain related disease and distress.

It turns out that not all Celiac sufferers have the typical symptoms, or any symptoms at all.  Traditionally, Celiac disease is thought to result in diarrhea, intestinal cramping and bloating, malabsorption (often resulting in anemia), and weight loss.  Yet, it has been more recently discovered that many people with positive antibody results and intestinal findings never complain of any symptoms.  The term "silent celiac disease" has been coined to describe such cases.

Yet, silent celiac disease is not truly silent.  Individuals with the silent version of the disease are just as likely (or even more likely) as those with symptomatic celiac disease to develop or have osteoporosis, lymphoma of the small bowel, and other autoimmune diseases like rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis, psoriasis, Hashimoto's thyroiditis (hypothyroidism), and perhaps even dementia[2],[3],[4],[5],[6],[7],[8]

Additionally, certain symptoms or disorders like constipation and bloating, diarrhea, gastroesophageal reflux, fatigue, depression, skin rashes, muscle aches and muscle damage, neuropathy (nerve dysfunction, especially motor and sensory dysfunction), migraine headaches, seizures, kidney disease (IgA nephropathy), type I diabetes, infertility, and mouth sores may be present but medical providers may fail to suspect an association with gluten[9],[10],[11],[12],[13],[14],[15],[16],[17],[18].

How many people have "silent Celiac disease"?  The answer is not really known at this point in time.   A diagnosis of silent celiac disease still requires that the diagnostic criteria of celiac disease be met.  That is, auto-antibodies to the intestine or antibodies to gliadin must be present.  Considering that nearly all patients demonstrating these antibodies possess certain genes called HLA-DQ2 and HLA-DQ8, the upper estimate on the prevalence of celiac disease in general (including silent celiac disease) would equal the prevalence of these genes.  The prevalence of these genes in the U.S. population is around 30%!  Could 30% of the U.S. population have celiac disease?  Possibly, but not likely.  The disease may requires specific triggers or alterations of the immune system to develop (such as those that occur during pregnancy, with viral illnesses, with certain nutrient deficiencies, and perhaps with certain environmental exposures).  Celiac disease may develop at any age!

Up to this point in time, we have been talking about celiac disease, yet many people that appear to be adversely reacting to gluten do not have laboratory evidence of celiac disease (antibodies).  The term "gluten sensitivity" or "gluten intolerance" has emerged to describe this condition.  Individuals with this condition may have many of the symptoms or conditions described above.  Yet, in addition to the plethora of symptoms and conditions above, gluten sensitivity has even been associated with psychosis and schizophrenia!![19] Not only do those with gluten sensitivity fail to meet the diagnostic criteria of celiac disease, they may not even possess the HLA-DQ2 or HLA-DQ8 genes[20].  Essentially, the entire population may be at risk for gluten sensitivity! 

A 2007 article in the journal GUT suggests exactly this[21].  The authors assemble the evidence to suggest that a common (perhaps universal) inflammatory response to gluten leads to increased intestinal permeability (so called "leaky gut") which then allows a person with susceptible genes to develop the antibody and autoimmune response we call celiac disease.  In essence, they argue that everyone may experience inflammation upon the ingestion of gluten, and this inflammation may lead to a plethora of severe health problems, yet not everyone will develop celiac disease. 

From Gluten to Grains

Before you consider the possibility, or the likelihood, that you have gluten sensitivity and alter your diet, there is still more to the story.  It turns out that gluten, the common term for several different proteins in wheat, rye, barley, and oats, may not be the only cause of the adverse health effects from these foods.  Grains contain molecules called lectins.  For instance, wheat contains wheat germ agglutinin (WGA) and it has been proposed that celiac disease and gluten sensitivity results from a gluten-lectin combination effect.  Indeed, many celiac patients also test positive for antibodies against WGA.[22]   Yet, lectins may cause health problems even from grains that lack gluten.  Grain, after all, is a broad term that refers to food seeds and includes grasses and legumes among other things.  Wheat, rye, barley, oats, sorghum, millet, maize, corn, soybean, rice, peanut, and most beans fall under the category of "grains."  While lectins are prevalent in nearly all plants and animals, grains contain very high concentrations of lectins.  Additionally, genetic modification of some grains has intentionally increased their lectin concentration in order to improve pest resistance.  Therefore, if lectins cause health problems, we would expect those problems to be most strongly associated with grain consumption.  However, studies have shown that wheat germ agglutinin (WGA) can have adverse effects on the intestinal cells even at extremely low  "nanomolar" concentrations[23].

Lectins are a general class of mostly indigestible proteins which bind to sugar molecules.  When ingested, lectins bind to the sugar molecules present on and in the cells which line the intestines.  A number of effects may be produced, including intestinal cell dysfunction and inflammation both of which subsequently lead to increased intestinal permeability (leaky gut).  Increased intestinal permeability, then, allows proteins (including lectins) that are not typically absorbed into the body to enter the intestinal veins and lymph vessels and circulate to vital organs.  This is part of the mechanism which is thought to contribute to various autoimmune conditions, but other outcomes are also possible.  A review article from 2004, summarizes several consequences of excessive lectin consumption like this:

Locally, they can affect the turnover and loss of gut epithelial cells, damage the luminal membranes of the epithelium, interfere with nutrient digestion and absorption, stimulate shifts in the bacterial flora and modulate the immune state of the digestive tract. Systemically, they can disrupt lipid, carbohydrate and protein metabolism, promote enlargement and/or atrophy of key internal organs [like the pancreas and thymus] [24], and alter the hormonal and immunological status. At high intakes, lectins can seriously threaten the growth and health of consuming animals.
[my insertion]

Due to the intestinal-immune interface and the entry of lectins into the body, most people demonstrate antibodies to lectins.  Studies on human antibodies to wheat germ agglutinin, soybean agglutinin, and peanut agglutinin suggest that these antibodies may be cross-reactive (with peanut agglutinin antibodies being the most cross-reactive)[25].  Antibody cross-reactivity means that they are able to bind to proteins different than the one which triggered the immune response.  This is not always a problem, but may increase the chance that antibodies may bind to the body's own proteins, triggering an autoimmune disease

Finally, lectins that enter the blood may increase platelet activation and increase the likelihood of forming blood clots[26].  After all, the term agglutinin refers to the ability of these molecules to make blood clot!

Toxic Harvest

So, by now there are two good reasons to eliminate or minimize one's intake of grains, namely gluten and lectins.  If this were not enough, I'd like to mention one more reason!  Grains contain two known toxins of the benzoxazinoid class, abbreviated DIMBOA and DIBOA (I'll spare you the chemical name).  These toxins induce mutations in DNA and RNA, which can cause cell death or, worse, induce a cancer cell[27].  DIMBOA and DIBOA offer a potent defense against pests and are produced in the highest quantities during the plants most vulnerable time, sprouting. 

Unfortunately, sprouted grains, which contain the greatest amount of these toxins, have been promoted as a health food!!  Studies specifically investigating the link between grains and cancer are generally scare.  However, studies investigating the association between food groups and cancer have shown that bread and cereals intake is significantly associated with renal cell carcinoma and prostate cancer[28],[29].

Subsidizing Disease

It may seem surprising that, grains, the staple of the standard American diet, could be causing such harm to so many people.  Yet, grains were never cultivated for their health benefits.  The negative effect of grains on health can be seen in the archeological record starting around 8,000-10,000 years ago with the start of civilization and agriculture, when they were first consumed in large quantity.  Grains have always been cultivated for their agricultural reliability and hardiness.  Nations and their economies have evolved around this attribute of grains and today, the U.S. government spends over $20 billion dollars per year subsidizing the cultivation of some of the least healthy crops available.  Here is the breakdown of crop subsidies by percentage from 2004:

Crop

Corn

Cotton

Wheat

Rice

Soybean

Dairy

Peanuts

Sugar

Tobacco

Percent

35.4%

17.7%

14.6%

14.1%

7.6%

3.7%

3.2%

0.8%

0.2%

Five out of the top seven listed are grains and the others are certainly have their known health problems when consumed by humans (yes, even cotton in the form of cottonseed oil which is used in dressings and is pro-inflammatory).  There is no doubt that the subsidizing of these crops and, thus, the availability of cheap food products made from these crops, contributes to the significant disease burden in our country.

Going Against the Grain

Aside from reforming agricultural subsidies in the U.S., the most effective means to avoiding the adverse health effects of grains is to eliminate or reduce one's intake of grains.   This is no easy task!  I recommend a two staged approach.  Of course, these are general guidelines and not medical advice tailored to you as an individual.  Please check with your physician before continuing.

1. First strictly eliminate gluten.  If you can't bear the idea of a life without gluten but would commit to it in exchange for feeling better than ever, do a 30 day gluten free trial to see how you feel off gluten followed by a single day gluten challenge to see if more obvious symptoms return.  Just remember, not everyone who may experience adverse health effects from gluten will feel noticeably bad from eating gluten.  After you have adapted to life without gluten and have discovered the richness of a gluten free diet, move on to step 2.

2.  Eliminate all grains for 30 days.  This is to investigate any association between grains (and their lectins) and persisting symptoms of any kind and/or overall wellbeing.  This step is especially important for anyone with an autoimmune disease.  After this step, make the individually informed decision whether you want to allow any grains in your diet.  If you noticed not difference from fully eliminating grains, this may be a reasonable option.  If you wish to reintroduce grains to your diet, keep them to a minimum.  There is no dose which does not produce an effect on the intestinal lining.  Therefore, the goal is to minimize harm while retaining the freedom to eat some grains.  Regardless of whether you decide to eat some grains, I strongly recommend avoiding sprouted grains.

Related Wheat Research On GreenMedInfo.com


Resources

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Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of GreenMedInfo or its staff.

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wheat grass juice



Does wheat grass juice fall under the category of "sprouted grains" that should be avoided, or do they already contain less of the toxins by the time they are harvested for juicing? Thanks in advance.

Re: wheat grass juice



Wheat grass falls in between sprouted grains and kernel bearing wheat in terms of maturity and lectin content.  Wheat germ agglutinin (WGA) reaches its highest concentration during sprouting and generally declines in concentration as the plant matures.  So wheat grass contains less WGA than sprouted wheat, but still remains heavy in WGA content overall.  I would call it "less worse" than sprouted wheat in comparing lectin content.  Interestingly, wheat grass is often promoted as a gluten free source of wheat nutrients.  While this is true (gluten exists in the kernel of the mature plant), many (or most) people with gluten sensitivity may also have WGA sensitivity as well.  For the general population, including those without any known gluten or grain sensitivity, I'm concerned that the use of wheat grass as a health supplement is contributing to excessive and harmful lectin consumption.  As noted in the article, lectins (as well as gluten) may increase intestinal permeability in everyone.

 

Hope this helps,

 

Nathan

A1 Milk Harms and Gluten, Cereal or Grain Elimination



Interesting ! I wonder to what extent gluten elimination, cereal elimination and grain elimination can decrease harms of consuming A1 type milk. Also, what can casein elimination or all milk elimination change in terms of health in addition to A1 milk(or A1 milk casein) elimination except those about poor producing practices and hormones present in milk ? I also don't know if it is possible to produce or find an A1 type milk product totally free from A1 casein or a milk product totally free from casein. Some suggest that the dangers of A1 milk or casein are a result of leaky gut syndrome. I'd like to be informed about this issue, thanks !

Reply: A1 Milk Harms and Gluten, Cereal or Grain Elimination



Excellent question and I don't think the answer is known.  In general, though, I nearly certain that your thinking is accurate and that food sensitivities and/or dietary triggers of disease rarely act alone.   I suspect there is a synergistic disease cycle between food molecules (most often proteins), immune sensitization, and cellular molecules (most often genetic and/or surface proteins) and a big part of the cycle initiation may involve increased intestinal permeability (leaky gut).  The variable effects of A1 and A2 casein on individuals may depend upon these variables and, you may be right, the initial condition necessary for harm to occur may be leaky gut, which may be maintained by a diet high in lectins or gluten.  This fits with the observations that gluten-casein free diets relieve symptoms better than just either one alone.  Also related to this observation is the transient loss of lactase production in gluten sensitive individuals, which typically returns after a period of gluten free nutrition.  Given this hypothesis, I think that preventing leaky gut in the first place (reducing lectins, avoiding gluten, reducing alcohol intake, limited extremely spicy food, identifying food sensitivities, etc.) may go a long ways in preventing a number of diseases, most specifically autoimmune diseases.

 

Nathan

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