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Thiamine Testing in Clinical Practice

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thiamine testing

In Thiamine Deficiency in Modern Medical Practice and Threats to Thiamine Sufficiency in the 21st Century, I introduced the concept that thiamine deficiency underlies many common conditions plaguing modern healthcare and identified exposures and mechanisms threatening thiamine stability. In Hyperglycemia and Low Thiamine: Gateways to Modern Disease, I summarized the pattern of metabolic changes associated with modern dietary practices that lead to thiamine insufficiency, hyperglycemia, diabetes, cardiovascular and Alzheimer’s disease. In this document, I will tackle thiamine testing.

Background

As discussed in the previous articles and elsewhere on this website, thiamine is a critical and rate-limiting nutrient for several of the cytosolic and mitochondrial enzymes responsible for the conversion of food into cellular energy or ATP. As such, decrements in thiamine ingestion imperil cell function systemically, leading to the onset, maintenance, and/or exacerbation of a host of illnesses.

Thiamine has a short half-life, 1-12 hours, and absent sufficient and/or regular consumption, thiamine reserves will be depleted entirely within 2-3 weeks. The risk of acute deficiency is common after an extended illness where consumption or absorption is reduced, while excretion or metabolism is increased. This includes any illness where nausea, vomiting, and/or diarrhea are present; where intestinal absorption is compromised, such as with Crohn’s, Celiac, constipation, dysbiosis, or gastric bypass; where excretion is increased such as with diabetes and kidney disease; where fever or the severity of the illness increases the demands of metabolism e.g. hypermetabolic states such as sepsis, burn patients, and in critical care cases more broadly where the metabolic demands of the illness itself and the anti-thiamine qualities of many medications overwhelm thiamine availability. Pregnancy, especially when hyperemesis is involved, should also be considered a hypermetabolic state where thiamine deficiency develops more frequently than recognized and is associated with common complications.

Of the studies that have investigated thiamine deficiency in critical care, the incidence range for deficiency varies by study criteria from 10% to 90% upon admission and increases steadily with each day in the ICU. This suggests that even if the patient is not thiamine deficient upon admission, he/she may become so as time progresses.

The progression to severe thiamine deficiency in the face of critical illness will be expedited if the patient’s premorbid health was challenged by chronic illness that included the use of thiamine-depleting medications, and/or where poor diet and chronic alcohol, drug, or tobacco use were present. Subclinical thiamine deficiency or insufficiency may characterize a majority of patients dealing with chronic illness. It is not well defined, but given the chemistry of thiamine against the backdrop of modern diets and medicines, it is logical to presume that many patients dealing with chronic illness consume insufficient thiamine relative to the demands of their metabolism and are but one crisis away from frank deficiency (see Threats and Hyperglycemia documents for details).

Ideally, the recognition and treatment of thiamine insufficiency would be considered before frank deficiency manifests. Unfortunately, current laboratory testing provides neither guidance on subclinical thiamine deficiency or insufficiency nor consistent definitions of what values constitute frank deficiency. As such, a patient tested at one lab may be considered deficient, while at another, may fall within the normative ranges, even if each lab uses the same methods. Similarly, depending upon the testing equipment and methods, the patient’s thiamine status may be more or less sensitive to recent thiamine intake or other confounding variables that skew the results towards sufficiency when in fact the patient is deficient.

Conventional Methods of Measurement

For clinical purposes, the most important thiamine analyte is thiamine pyrophosphate (TPP), also called thiamine diphosphate (ThDP/TDP). Additional phosphates can be added or subtracted to form thiamine triphosphate (TTP/ThTP) and thiamine monophosphate (TMP/ThMP), which are detectable by different laboratory measures, but as of yet, their utility in the clinic has not been fully extrapolated. It should be noted that the phosphorylation of free thiamine into TPP, requires magnesium and ATP, and so, among the factors that will affect TPP values is magnesium deficiency.

Thiamine may be tested from whole blood, erythrocytes, serum, plasma, and urine. From whole blood, all three derivatives of free thiamine can be obtained. Thiamine pyrophosphate accounts for almost 90% of circulating thiamine, 80% of which, is found in erythrocytes. Free thiamine, TMP, and TTP are found primarily in serum, plasma, and urine.

Whole Blood TPP

Whole blood measures of TPP utilize liquid chromatography-tandem mass spectrometry (LC/MS/MS) or high-performance liquid chromatography (HPLC). In the US, the reference ranges TPP from two major labs, Quest Diagnostics, and LabCorp, are 78-185 nmol/L and 66.5−200.0 nmol/L, respectively. Both use LC/MS/MS. Published reference intervals for whole-blood TPP vary widely across labs, however, from a lower limit of 63–105 nmol/L to an upper limit of 171–229 nmol/L. There is no consensus regarding what value constitutes deficiency and little recognition of what may constitute borderline or insufficient thiamine. Under some conditions, TMP, TTP, and total thiamine values will be reported. There are no consistent reference ranges for these analytes either.

Erythrocyte Tests

Erythrocyte tests derived from whole blood samples may measure TPP directly from isolated erythrocytes, such as with HPLC, or indirectly, such as in the case of the erythrocyte transketolase activation test (ETKA). TPP measured erythrocytes using HPLC requires additional laboratory steps, mostly done for research purposes. Reports suggest that HPLC whole blood TPP and HPLC erythrocyte TPP correlate. Similarly, the research suggests that HPLC whole blood TPP and ETKA tests correspond, but there is much debate regarding which one is more accurate.

Unlike the direct assessment of circulating TPP, the ETKA test measures both basal and thiamine-stimulated activity of the thiamine-dependent enzyme transketolase. Test values are reported as a ratio or percentage of enzyme activation. When thiamine concentrations are sufficient, the addition of thiamine will not activate the transketolase enzyme. When thiamine is insufficient or deficient, transketolase activity will increase proportionately to the deficiency. Higher values correspond with the severity of deficiency.

Although there is no consensus regarding what constitutes deficiency for this test either, the continuum of values supports a gradation of need, which may be more useful clinically, particularly with borderline cases and when clinical symptoms correspond. Accordingly, greater than 17% enzyme activation is indicative of thiamine deficiency clinically whereas experimentally, particularly when comparing the sensitivity of different laboratory tools, >25% activation is considered deficient. It should be noted that the ETKA may correlate better with clinical conditions in thiamine-replete patients but may be problematic in patients with magnesium deficiency or when transketolase protein levels are diminished due to liver disease or diabetes.

The EKTA test was considered the gold standard for 50 years, but it is a time and manpower-intensive test, with a high risk for inter-batch variability. As such, and despite its favorable clinical utility, it has fallen out of favor. Currently, the EKTA test is performed only by research institutions and in a few private labs.

Plasma, Serum, and Urinary Tests

Plasma/serum contains only a small fraction of circulating thiamine relative to the erythrocytes and is sensitive to recent intake. As such, tests using plasma or serum are considered less accurate diagnostically but some labs still offer these tests. The reference range for Quest is 8-30 nmol/L.  More commonly, plasma measures of thiamine are used for research purposes. Similarly, urinary measures of free thiamine, TMP, and other thiamine metabolites are used in research protocols involving excretion rates relative to medication, deficiency states, and/or dietary intake.

Challenge Tests of Old

In the late 1960s, a pyruvic acid challenge test was devised to assess thiamine sufficiency in healthy pregnant and pre-eclamptic women. Much like the testing for gestational diabetes where blood glucose is measured before and after consuming glucose, with the pyruvic acid challenge test, blood pyruvic acid concentrations were measured before and after dextrose ingestion. Pyruvic acid is inversely correlated with thiamine status such that when thiamine is low, pyruvic acid increases.

While healthy women exhibited within range values of pyruvic acid concentrations for both fasted and the dextrose challenged portions of the test, pre-eclamptic women, depending upon the severity of the disease process, showed markedly elevated pyruvic concentrations post challenge. The most severely ill women, those hospitalized, had elevated pyruvic acid both pre and post dextrose challenge. Although, to my knowledge this test has not been used in other populations or for anything other research purposes, it illustrates clearly how thiamine deficiency is a sugar sensitive disease.  Should this type of testing be developed more fully, it could identify pending thiamine deficiency before it becomes testable via other methods.

To Test or Not To Test

Thiamine testing is a complicated topic. On the one hand, laboratory confirmation of thiamine deficiency aids in treatment decisions, but on the other, current testing, such as it is, carries the potential for a high false negative rate and may fail to detect anything but the most severe deficiencies. Since there is no consensus on what constitutes deficiency, much less insufficiency relative to diet, illness, or other metabolic variables that contribute to and precede frank deficiency, thiamine testing in some populations may prove unenlightening. In light of these issues, it is tempting to forego testing altogether and proceed directly to treatment based on clinical symptoms. Insofar as thiamine is a safe and essential, water-soluble nutrient, clinical suspicion may suffice and should suffice in acute cases where time is critical. To the extent that medicine strives to be data-driven, however, regular testing, before and during treatment, in conjunction with symptom tracking, may afford much needed insight on the relative value of thiamine in health and disease and may aid in the expansion and refinement of clinical reference ranges.

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Recovering From Medically Induced Chronic Illness

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Recovering from chronic illness

Unexplained or Medically Induced Chronic Illness?

Unexplained. That’s what doctors call chronic illness. Conventional medicine says, ‘learn to live with it.’ Rather than offer a true treatment or cure for these debilitating conditions, they suppress the immune system and offer more drugs for depression and anxiety – none of which are effective. I’m here to tell you that common wisdom is wrong. I know, because my own lucky story proves we can heal from chronic illness. Pharmaceutical insults created my disabling illnesses  – Chronic Fatigue, Fibromyalgia, estrogen dominance, adrenal fatigue, POTS, Graves’ Disease, Hashimoto’s, Bell’s Palsy, infertility and more. I share my journey to offer hope. The doctors were wrong. I have recovered and am once again, healthy.

Early Clues and Pharmaceutical Insults

My childhood had some clues – things I now know predict chronic illness. My lymph glands swelled when I was otherwise healthy. Mosquito bites turned into angry 3” welts. Childhood bunions and hyper-mobile joints suggested leaky gut. All these issues correlate with chronic illness and, seen in hindsight, hint at the difficulties that awaited me in adulthood.

My immune system may have been awry from the start, but pharmaceuticals tipped the scale toward chronic illness. As a teen, I took birth control pills for heavy periods and cramps. When vague symptoms appeared in my early twenties, I asked about pill side effects. The gynecologist laughed at the idea, but I trusted my gut and finally stopped the pill. I felt better in some ways but developed new symptoms.  Sleep became difficult. I was hypersensitive to noise and light and struggled with unquenchable thirst.  The doctor suggested my extreme thirst stemmed from hot weather and salty foods. This explanation didn’t add up to me, but I was young and so was the internet. I had no resources to connect the dots. Today, I recognize that 10 years of hormonal birth control created nutrient deficiencies (folic acid, vitamins B2, B6, B12, C, and E, along with magnesium, selenium and zinc) while also raising my risk for future autoimmune disease.

Recurrent UTIs, Fluoroquinolones, and New Onset Graves’ Disease

A few years later, recurrent urinary tract infections led to many doses of the fluoroquinolone antibiotic, Cipro. Cipro now carries a black box warning and is known to induce mitochondrial damage. My mid twenties also brought pre and post-menstrual spotting and bleeding for 10 days each month. Doctors did nothing for my hormonal imbalance but diagnosed Graves’ disease (hyperthyroidism). Everything about me sped up. Food went right through my system. I was moody. My mind was manic at times. I was unable to rest and yet physically exhausted from a constantly racing heart.

The doctor said Graves’ disease was easy – just destroy the thyroid and take hormone replacement pills for the rest of my life. I didn’t have a medical degree, but this treatment (RAI, radiation to kill the thyroid) just didn’t make sense. Graves’ disease is not thyroid disease. It is autoimmune dysfunction, where antibodies overstimulate a helpless thyroid.

As I studied my options, I learned that RAI could exacerbate autoimmune illness and many patients feel worse after treatment. It was surprising to find that the US was the only Western country to recommend RAI for women of childbearing age. Armed with this knowledge, I declined RAI and opted for medication. The endocrinologist mocked my decision. I was in my 20s and standing up to him was hard, but it marked a turning point and spurred me to take responsibility for my own health, rather than blindly trusting doctors. Recent reports suggest RAI treatment increases future cancer risks. My Graves’ disease eventually stabilized on medication, although I never felt really well. I pushed for answers for my continued illness, but doctors refused to test my sex or adrenal hormones.

IVF and More Damage to My Health

Things turned south again when I was unable to conceive. The supposed best fertility clinic in Washington, DC could not find a cause for my infertility. I’ll save that story for another day, but the short version involved a few years of torment and four failed IVF attempts. The fertility drugs and the stress worsened my overall health considerably.

Our last try at pregnancy was with a specialist who practiced functional medicine. Labs and charting uncovered a clear progesterone imbalance, and also explained my spotting. This simple diagnosis was completely missed by the conventional fertility clinic. A brief trial of progesterone cream resulted in two naturally conceived, healthy pregnancies. Isn’t it remarkable that several years and over $100,000 failed to produce a baby with IVF and $20 of progesterone cream on my wrist did the trick? This could be a cautionary tale about profit motive in modern medicine, but that, too, is a topic for another day.

Years of Conventional Medicine: Thyroid Damage, Autonomic Dysfunction, and Profound Fatigue

I weaned off thyroid medications and felt fairly well after my babies, but my system took a big hit when life brought an international relocation. The move was intensely stressful and my health sunk after we landed half a world away. I had no energy, gained weight, and lived in a fog. The tropical heat and humidity of Southeast Asia felt like a personalized form of torture.

Perhaps the stress of our move left me vulnerable to the reappearance of autoimmune and adrenal dysfunction, as my next diagnosis was Hashimoto’s Disease and adrenal fatigue. Doctors ordered functional medicine tests (hair, organic acids, stool, saliva cortisol and hormones) that identified nutrient imbalances, but their treatment ideas fell short. Despite replacement hormones and supplements by the handful, I remained very sick, with profound exhaustion, brain fog, sleep disruption, pain, and terribly imbalanced sex hormones.

Taking Matters Into My Own Hands

If setbacks have a bright side, it is in the drive to get better. I started studying when my doctors ran out of ideas to treat my illness. Fibromyalgia was the best description of my pain, but I knew conventional medicine offered no help for this condition. I dug into the topic and found the work of Dr. John C. Lowe, who used T3 thyroid hormone for fibromyalgia, and Paul Robinson, creator of CT3M, the circadian method for using T3. CT3M and high daily dose of progesterone cream improved my quality of life in the short term. Near daily bleeding eventually regulated back into a normal cycle and my adrenal function improved greatly.

Postural Orthostatic Tachycardia Syndrome (POTS) was the next bump, bringing a very high heart rate, very low blood pressure, heat intolerance, and extreme sweating on the lightest activity. By this time, I didn’t even ask the doctor for help. My research pointed to salt and potassium, and so I drank the adrenal cocktail and salt water daily. POTS symptoms vanished quickly with this easy strategy, as did the nocturnal polyuria that plagued me for many years.

I steadied after this time. I was not well but functional, despite some major life stressors, including another international move and a child’s health crisis. Even though I managed the daily basics, things like house guests, travel, or anything physically taxing required several days to a week of recuperation.

The Next Step: Addressing Nutrient Deficiencies

The next step in my recovery came thanks to a B12 protocol that includes co-factor nutrients, developed by Dr. Gregory Russell-Jones. Addressing the deficiencies connected to B12 helped and things progressed well until I had a disastrous reaction after eating mussels, which I hoped would raise iron levels. I vomited for hours and stayed in bed for days. I kept up the B12 protocol, but just couldn’t recover. Largely bedridden, and napping 4 hours at a stretch, I got up in the evening only to drive to a restaurant dinner, too exhausted to prepare food or deal with dishes.

Debilitating exhaustion lasted for a month, and then two, with no relief. It was an awful time, but hitting rock bottom proved a blessing in disguise, as desperation turned me back to research. Slowly, I pushed through brain fog and started to review studies on chronic fatigue and fibromyalgia. This led me to a promising Italian study using thiamine for these conditions.

Studying thiamine, it seemed plausible that the allergic reaction to mussels drained my B1 reserves, making it impossible to recover. Inspired by the research, I started on plain B1 at very high doses. To my surprise, I felt better right away. The first dose boosted my energy and mental clarity.

I continued to learn about B1’s benefits, thanks to this website and the text by Drs. Marrs and Lonsdale.  Two weeks went by and thiamine HCL seemed less effective, so I switched to lipothiamine and allithiamine, the forms recommended in Thiamine Deficiency Disease, Dysautonomia, and High Calorie Malnutrition. WOW. What a difference! Virtually overnight, my gears began to turn, and I felt better with each new day. In a single month, I went from bedridden to functioning well 2 out of every 3 days. I had ideas, I had energy, and I could DO things. The setback days were mild and disappeared entirely after 2 months on thiamine.

At the 2 month mark, I had to travel for a family emergency. My pre-thiamine self would have needed at least a week of rest following this kind of trip, and I expected pain and fatigue as I stepped off the plane. But to my great surprise, I felt well! I remember walking through the airport late that evening and thinking it felt amazing to stretch my legs. Maybe that sounds like an ordinary feeling, but years of chronic fatigue and fibromyalgia conditioned my body to stop, to sit, whenever possible. It was entirely novel to FEEL GOOD while moving! The next day came and I did not collapse, I did not require days to recover and was able to carry on like a normal person. It was a remarkable change in an unbelievably short time.

Recovery From Conventional Medicine’s Ills Came Down to Thiamine

Getting better feels miraculous, but it’s not. The real credit for my recovery goes to experts like Dr. Marrs and Dr. Lonsdale who spread the word about thiamine. Despite years of illness and dead ends, I believed I could heal and I kept trying. Tenacity eventually paid off when posts on this site helped connect the dots between my symptoms and thiamine deficiency. More than anything, my recovery is a story of tremendous luck, as I finally landed upon the single nutrient my body needed most.

The difference between my “before thiamine” and “after thiamine” self is beyond what I can describe.  Birth control, Cipro, and Lupron created nutrient imbalances and damaged my mitochondria, leading to multiple forms of chronic illness in the years between my 20s and 40s. Replacing thiamine made recovery possible by providing the fuel my damaged cells so badly needed. At this writing, I am 7 months into high dose thiamine and continue to improve. I have not experienced any form of setback, regardless the stressors. My energy feels close to normal, the pain is resolving, and brain fog is a thing of the past. My sense of humor, creativity and mental functioning are all on the upswing. I owe thanks to the real scientists who dare to challenge wrong-headed ideas of conventional medicine, and who provide hope for these so-called hopeless conditions. My wish is that this story will do the same for someone else.

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More people than ever are reading Hormones Matter, a testament to the need for independent voices in health and medicine. We are not funded and accept limited advertising. Unlike many health sites, we don’t force you to purchase a subscription. We believe health information should be open to all. If you read Hormones Matter, like it, please help support it. Contribute now.

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This article was published originally on February 6, 2020. 

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Treating Sensory Processing Disorder in Children

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sensory processing disorder

On Tuesday, August 16, 2016, I read an article in the Wall Street Journal with this title: Treating Children for Sensory Processing Disorder. Since I have treated hundreds of these children, I am posting here some of the facts that I have learned. First of all let me provide some extracts from this article that is all about a diagnosis of “Sensory Processing Disorder” (SPD). The article says that SPD is believed to affect 5% to 16% of children in the United States.

I want to make it clear what we are talking about. This article describes a three-year-old child who, when accompanying his mother to the grocery store would have meltdowns. His mother was quoted as saying “he would literally bite me throughout the grocery store”. An occupational therapist determined that he had SPD: “a condition in which the body and brain have difficulty processing and responding to sensory stimuli in the environment”. The article goes on to say that “some people with SPD are hypersensitive to loud noises or different textured foods. Others may be agitated by the touch of a clothing tag”. The Director of Occupational Therapy (DOT) research at Cincinnati Children’s Hospital Medical Center was reported as saying

Occupational therapists treat dozens of SPD patients every week. It can affect just one sense, such as hearing, touch or taste, or multiple senses. Sensory processing problems can also affect the body’s vestibular system, creating difficulties with balance, or the proprioceptive system, leading to problems with clumsiness and body positioning.

The DOT “has worked with some children with SPD who are academically gifted and don’t have autism or ADHD. It is clear from the article that the method of treatment, entitled “sensory integration”, looks upon SPD as abnormal psychological behavior. This is  in spite of the fact that a professor of radiology and bioengineering at University of California, San Francisco stated that studies showed that children with SPD had less developed white matter mostly in the back of their brain, compared with typically developing children. This posterior region of the brain is where a lot of sensory processing takes place. This is a major clue as we shall see shortly.

Beyond the Bad Parenting Theory of Sensory Processing Disorder

Now I ask you dear reader, is it common sense to claim that this kind of disorder in 5% to 16% of our children is purely psychological from bad parenting, acceptably normal in a young child, or caused by genetic changes? Since the Wall Street Journal article claims that “adults can have SPD”, it is clearly not confined to children. To believe that any of these facts, or all of them together, can result in so much willful behavioral deviation is a reduction to absurdity. It is absolutely certain that Mother Nature never makes that kind of genetically determined mistake in so many individuals.

The article in the Wall Street Journal reports that “a common treatment at Cincinnati Children’s is called sensory integration, involving three sessions a week for about six weeks”. The founder of the STAR Institute for sensory processing disorder in Denver involves an intensive treatment program of some 31-hour sessions nearly every day for several weeks. The cost is about $175 per session.

When I was a consultant pediatrician at Cleveland Clinic Foundation, I saw many children who were referred because of “emotional problems”. The accepted cause at that time (and still is by many pediatricians) was lack of good parenting. In discussions with parents, I found that bad parenting was rare, but lousy diet was common, particularly because of the enormous overload of sugar, often started in infancy. In fact, sugar was used as an inducement to good behavior, not recognizing the fact that the sugar was the cause of the bad behavior in the first place. By doing a blood test on these children I repeatedly found evidence of thiamine deficiency. To me, the extension of the absurdity is that there is no mention at all in this article about the role of nutrition. I have posted a number of articles on this website concerning vitamins, particularly  vitamin B1 (thiamine). I have pointed out many times that overloading the diet with empty calories, particularly from sugar, automatically induces thiamine deficiency relative to the excessive calories. The scientific evidence for this has been known since 1936. Any attempt to depict thiamine deficiency by measuring its blood level in a person eating “empty calories” will be doomed to failure. The concentration of thiamine in the blood is only normal in relation to a normal calorie content of the diet. It is the calorie/thiamine ratio that counts.

Sugar, Thiamine, and SPD

By pointing out to the parents that they had to get rid of the sugar and providing the child with a supplement of thiamine and magnesium, all the symptoms of “psychological misbehavior”, no matter what pretty name was given to it, quickly resolved. For literally a few dollars and cents, this form of treatment is overwhelmingly simple and effective. The “posterior region of the brain where a lot of sensory processing takes place” is peculiarly sensitive to thiamine deficiency. It will affect balance and in its extreme form, can affect brainstem mechanisms where the control of heart rate and breathing is automatically conducted. This is why an excess of sugar is incredibly dangerous, not because the sugar is a poison in its own right, but because of the secondary effect on energy metabolism in that part of the brain that is essential to life itself.

What seems to be poorly understood is that thiamine deficiency produces the same effect in the brain as lack of oxygen and sensory perception becomes exaggerated. Pain is felt more intensely and may give rise to a phenomenon known as “hyperalgesia”(acute pain perception). Sound and light may be so much more perceived that the sufferer puts hands over his ears or closes his eyes, because the perception is offensive. Touch is grossly exaggerated and may even give rise to screaming by the child when being physically examined by a physician. Because of this poor understanding, the behavior of the child is regarded as “psychological”. Under such circumstances a mild injury to an ankle may give rise to severe pain in the leg. It used to be known as “acute sympathetic dystrophy”. The name has been changed to “acute regional pain syndrome” or “complex regional pain syndrome“. Let it be clearly understood that no matter what kind of injury, obvious inflammatory reaction or source of discomfort occurs in the body, the pain is perceived by the brain. If the mechanism of sensory perception is exaggerated, the pain will be more intense.

Conclusion

It is becoming abundantly clear that a diagnosis of sensory integration, ADD, ADHD, OCD and many other diagnostic refinements are not separate diseases at all. Like variations on a symphonic theme in music, the biochemical changes in the brain are responsible for creating the symptomatic expressions on a completely variable basis. It also explains in practical terms why many of the so-called SPD children in the Wall Street Journal article “were unusually gifted”. Like different models of cars with different horsepower, surely the more intelligent brain requires efficient energy metabolism to meet its “gifted” requirements. For those interested in further details of this concept, turn to the post on “Eosinophilic Esophagitis” on this website. There you will find that the unfortunate patient described with this disease was misdiagnosed for many years as psychosomatic. I will go further than this and say that if the symptoms that are commonly represented by changes in brain processing are neglected, and the malnutrition continues, we can expect damaging changes to take place. I would expect this to lead to a whole series of diseases that also go by different diagnostic nomenclatures, Parkinson’s disease, Alzheimer disease and various forms of dementia that represent the end point damage that has accrued over years. Are we collectively insane?

We Need Your Help

More people than ever are reading Hormones Matter, a testament to the need for independent voices in health and medicine. We are not funded and accept limited advertising. Unlike many health sites, we don’t force you to purchase a subscription. We believe health information should be open to all. If you read Hormones Matter, like it, please help support it. Contribute now.

Yes, I would like to support Hormones Matter. 

Photo by Alireza Attari on Unsplash.

This article was published originally on August 24, 2016. 

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Hyperglycemia and Low Thiamine: Gateways to Modern Disease

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Thiamine deficiency, hyperglycemia gateway to disease

In Thiamine Deficiency in Modern Medical Practice and Threats to Thiamine Sufficiency in the 21st Century, I introduced the concept that thiamine deficiency underlies many common conditions plaguing modern healthcare and identified exposures and mechanisms threatening thiamine stability. In this document, I will tackle the pattern of metabolic changes associated with the modern dietary practices leading to thiamine insufficiency, and resulting in, and sustaining hyperglycemia.

Hyperglycemia Through a Different Lens

Hyperglycemia, and the metabolic dysfunction it initiates, is a worldwide problem that has reached epidemic proportions. Due in part to overconsumption of sugary foods and in part to decrements in mitochondrial capacity that drive cravings for sugars, hyperglycemia fuels the metabolic derangements underlying obesity, type 2 diabetes, cardiovascular disease, and more recently, research suggests Alzheimer’s disease as well. These interconnected disease processes represent the top leading contributors to morbidity and mortality.

Conventional wisdom attributes these disease processes to over-nutrition and the solutions that follow involve the restriction of calories and/or the medical manipulation of the pathways initiated by hyperglycemia. Admittedly, excess caloric intake is a component, but this nomenclature suggests an overly simplified concept of nutrition; one where all that matters is calories consumed relative to calories burned. This view obfuscates the role of micronutrients in the conversion of these calories/foods into adenosine triphosphate (ATP), the energy source for all cells. It ignores the fact that the aberrant cascades so commonly associated with hyperglycemia, are merely adaptive responses to the lack of micronutrient availability and consequent reduction in ATP. Finally, through this lens, the entirety of the blame for overeating is placed upon the individual.

In reality, while the initial choices that precipitated the hyperglycemia may have been the individual’s responsibility, once these patterns become entrenched molecularly, the resulting decline in ATP drives the cravings for high-calorie foods to compensate. In a very real way, these patients are starving despite sufficient or even excessive caloric intake. It is high-calorie malnutrition, but malnutrition nevertheless. Viewed from perspective, hyperglycemia is not a disease of excess, per se, but rather, one of deficiency. As such, the opportunities for treatment are expanded beyond the typical trend to reduce, block, or otherwise override a particular pathway, and shifted towards a rebalancing of metabolic health. Here, the question is not so much which pathways should be blocked to stave off the associated deleterious effects of hyperglycemia, but rather, what does the patient need to more effectively metabolize foods into energy? What is missing from his/her diet that will reduce the body’s drive for sugars as its primary energy source? In other words, what does he or she need to be healthy?

To answer those questions, one has to look more closely towards bioenergetics and ask what micronutrients are needed to convert consumed foods into ATP and whether or not the patient’s diet provides those nutrients. Research suggests that the energy metabolism enzymes from the cytosol through the mitochondria require at least 22 micronutrients to utilize the macronutrients from consumed foods to produce ATP. Many of these micronutrients are in short supply with high carbohydrate diets (see Threats for details). Thiamine is top among them, and because of its gateway role in energy metabolism, thiamine insufficiency is a significant contributor to the disease processes currently attributed to hyperglycemia.

Thiamine, Sugar, and Energy Metabolism

Thiamine is a required and rate-limiting co-factor to five enzymes involved in energy metabolism, including those at the entry points for the glucose, fatty acid, and amino acid pathways (transketolase, pyruvate dehydrogenase complex [PDH], 2-Hydroxyacyl-CoA lyase [HACL], and branched-chain alpha-keto acid dehydrogenase [BCKAD] and alpha ketoglutarate dehydrogenase [a-KDGH]. Insufficient thiamine leads to poor glucose handling resulting in hyperglycemia. It also induces poor protein and fatty acid metabolism resulting in the elevated branch-chain amino acids and dyslipidemias common to patients with hyperglycemic metabolic syndrome.

Conversely, high carbohydrate diets increase the demand for thiamine, which, if left unchecked, ultimately leads to thiamine deficiency, hyperglycemia, disturbed protein, and fatty acid metabolism. In healthy, thiamine-sufficient adults, high carbohydrate consumption results in a significant reduction of mean plasma thiamine concentrations in just over three weeks. Over the longer term, a high carbohydrate diet initiates many changes in thiamine and energy metabolism that ultimately result in reduced thiamine availability, higher circulating glucose, and poor energy metabolism. Thus, whether by cause or consequence, low thiamine and hyperglycemia are inextricably intertwined. One eventually leads to the other.

Altered Metabolism and Mechanisms of Damage

Under normal glycemic conditions and where thiamine is sufficient, excess sugars from glycolysis are shuttled through the pentose phosphate pathway via the thiamine-dependent enzymes transketolase to PDH and onward through the mitochondria. Under conditions of high carbohydrate intake/low thiamine, however, these sugars are diverted away from the primary metabolic pathways used for ATP production, inducing a net decline in ATP, and away from the synthesis of ribonucleotides and NADPH, substrates for RNA/DNA, and fatty acid metabolism and ROS detoxification respectively, to secondary metabolic pathways, specifically, the polyol/sorbitol, hexosamine, diacylglycerol/PKC, advanced glycation end product (AGE) pathways. Research suggests the upregulation of these pathways underlie the macro-and microvascular cell damage attributed to hyperglycemia, related cardiovascular and neural damage, while the decrements in ATP drive the general metabolic dysfunction associated with obesity and a host of other inflammatory conditions.

The high carbohydrate/low thiamine diet disturbs amino acid and fatty acid metabolism as well. Elevated branched-chain amino acids (BCAA) are common with hyperglycemia. Indeed, elevated BCAA may predict impending diabetes. Underlying the elevated BCCA is impaired catabolism due to a genetic or environmentally triggered defect in the BCKAD enzyme. BCKAD is dependent upon thiamine and elevated BCCAs are a manifestation of deranged energy metabolism precipitated by thiamine insufficiency. Genetic aberrations of BKCAD display similarly elevated BCAA, though typically much earlier, and respond favorably to thiamine supplementation.

With chronic hyperglycemia, the increased branched-chain keto acids, a secondary effect of poor BCAA catabolism, lead to excess short and medium-chain acylcarnitines. Surplus acylcarnitines increase the flux of fatty acids through the b-oxidation pathway beyond its capacity. This results in incomplete fatty acid metabolism, the dyslipidemias noted with hyperglycemia, and the formation of the pro-inflammatory diacylglycerol and ceramides that reinforce insulin resistance.

All of this, of course, comes against the backdrop of declining ATP capacity. Under conditions of insufficient thiamine/hyperglycemia, ATP production may be reduced up to 70% depending upon the severity and chronicity of disordered metabolism, the organ or tissue in question, and the model used to test. Decrements in the brain and heart, because of their high energy demands are the most severe, while reductions in the GI system and musculature present most noticeably in the early stages. Fatigue, weakness, and GI disturbances are among the earliest and most common unrecognized symptoms of the initial stages of insufficient thiamine.

Correcting Metabolic Dysfunction With Micronutrients

Ideally, ill-health would precipitate dietary changes, but in the case of hyperglycemia, particularly when it is chronic, the altered metabolic pathways and reduced capacity to synthesize ATP from consumed foods make this prospect difficult to impossible for some. Based upon thiamine’s role in this process, a more amenable approach might be to address thiamine and other micronutrient deficiencies first. Research from multiple disciplines demonstrates the remarkable improvement in metabolic capacity with thiamine repletion suggesting that simply replenishing this and other micronutrients may slow or reverse the progression of disease in these populations. Below are a few of the hundreds of studies published on this topic.

  • Thiamine reduced or reversed hyperglycemia-related activation of the secondary glucose pathways (polyol/sorbitol, hexosamine, diacylglycerol/PKC, AGE) via upregulation of the PDH enzyme. It improved cardiac contractility, reduced cardiac fibrosis and decreased the expression of the mRNA-associated proteins (thrombospondin, fibronectins, plasminogen activator inhibitor 1, and connective tissue growth factor), and prevented obesity in the overfed arm of an experiment using streptozotocin-induced diabetes in rats.
  • In streptozotocin (STZ)-induced diabetic rats, high-dose thiamine and benfotiamine (a synthetic S-acyl derivative of thiamine) therapy increased transketolase and PDH activity increasing ribose-5-phosphate and reduced microalbuminuria and proteinuria by 70-80%. PKC, AGE, and oxidative stress were all reduced significantly.
  • In STZ-induced diabetic/leptin mutant type rats, benfotiamine improved heart function and prevented hyperglycemia-induced, left ventricular end-diastolic pressure increase and chamber dilatation in both models.
  • Benfotiamine administration 150mg thiamine daily thiamine significantly reduced blood glucose within a month, in a randomized, placebo-control trial of 24 drug naïve T2D diabetics.
  • In a three-month randomized placebo controlled trial, 50 T2D patients in the experimental arm were given 3X 100mg thiamine per day. Thiamine therapy significantly improved microalbuminuria, glycated hemoglobin, while decreasing PCK levels. Markers of oxidative stress and fibrinolysis were non-significant.
  • After 45 days of benfotiamine and vitamin B6 supplementation, 19 of the 22 patients enrolled in the study saw statically significant reductions in pain, symptom scores, neurophysiological and biological markers of diabetic neuropathy.
  • A 6 month randomized trial with 60 T2D with medication-controlled blood sugar and 26 age – and BMI-matched controls found that 100mg thiamine daily, significantly corrected lipid profiles and creatinine levels.
  • One time administration of 100mg IV thiamine, improved endothelium-dependent vasodilatation in 10 patients with TD2 during an acute glucose tolerance test.
  • One week of IV thiamine administration at 200mg/day in six patients with heart failure (HF) and who were also receiving diuretics (diuretics deplete thiamine) improved left ventricular ejection fraction (LVEF) in four of those patients from 24% to 37%.
  • A randomized, double-blind, placebo controlled study of HF patients on diuretic treatment found that 300mg/day oral thiamine improved LVEF significantly.

Thiamine Insufficiency Versus Deficiency

Among the more common misperceptions about thiamine is that deficiency is delineated by laboratory testing. While this is true for severe deficiency and when the appropriate laboratory tests are utilized, far too often, the insufficiency syndromes that present months to decades before frank deficiency is detected, are missed completely. This owes in part to the variability of testing methodologies and in part to the very framework from which we determine sufficiency and deficiency. Thiamine testing, like the tests for many micronutrients, carries a high false-negative rate and fails to consider the nature of micronutrient deficiency relative to need. The next paper in this series will addressing testing methods.

As outlined above and in the Threats document, several environmental variables increase the demand for nutrients, a diet high in carbohydrates is top among them. The increased demand will not necessarily or immediately test positive for deficiency. Rather, it will present symptomatically and must be suspected based upon the symptoms of deranged energy metabolism. In these cases, thiamine supplementation is done to support and correct reduced enzyme activity so that consumed foods may be more efficiently metabolized and converted into ATP. This then reduces the use of the less efficient and generally deleterious secondary metabolic cascades linked to the constellation of negative health effects associated with hyperglycemia.

Consider Thiamine

Thiamine is a safe, non-toxic, essential nutrient that has become increasingly difficult to maintain in the face of modern dietary practices and chemical exposures. Thiamine sufficiency is fundamental to energy metabolism, mitochondrial capacity, and thus, health. Consider thiamine in your practice.

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Threats to Thiamine Sufficiency in the 21st Century

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In the first paper, Thiamine Deficiency in Modern Medical Practice , I provided an overview of why health practitioners should consider thiamine in general practice. In this paper, I would like to delve more deeply into how one becomes deficient in the 21st century.

Thiamine and Its RDA

Thiamine, or vitamin B1, is an essential and rate limiting nutrient required for metabolic health. Like the other B vitamins, it is water-soluble. Unlike some other B vitamins, it has a very short half-life (1-12 hours), and a limited reserve of about 30 milligrams. Absent regular consumption, deficiency arises quickly, manifesting symptoms that range from general fatigue, mood lability, anorexia, and nausea to cardiac irregularities, neuromuscular and neurocognitive deficits. In developed countries, where food enrichment and fortification programs have added thiamine to grain and other products, thiamine deficiency syndromes are considered to be rare and largely confined to specific populations and circumstances where thiamine ingestion, absorption, metabolism, or excretion are impaired such as poverty-based malnutrition, alcoholism, severe gut dysbiosis and/or hyperemesis.

The recommended daily allowance (RDA) put forth by health institutions considers 1.1-1.2mg of thiamine sufficient for most adults to stave off deficiency. This requirement is met easily with any modern diet, even a poor one, suggesting that the suspected low incidence of deficiency is accurate. And yet, across multiple studies that have measured thiamine status in different patient populations, none of whom can be considered malnourished by RDA standards, or alcoholic, the rate of deficiency is found to be between 20-98%; a discordance that suggests both institutional designations of thiamine sufficiency and deficiency are underestimated.

Insofar as thiamine is absolutely requisite for the conversion of food into cellular energy, e.g. ATP, and sufficient ATP is fundamental to metabolic health, something that has become an increasingly rare phenomenon in the Western world, it is possible that our understanding of thiamine sufficiency and deficiency is mismatched to the demands of modern living. If this is the case, then insufficient thiamine may be a key factor in many of the disease processes that plague modern medicine. Indeed, thiamine insufficiency and frank deficiency has been observed with obesity, diabetes, heart disease, gastrointestinal dysbiosis and dysmotility syndromes, post gastric bypass surgery, in cancer, Alzheimer’s, Parkinson’s, and psychiatric patients. Combined, these patient populations represent a far larger percentage of the population than recognized within the current paradigm. From this perspective, it is conceivable that the older designations of sufficiency and deficiency no longer apply and that for the 21st century patient, thiamine stability is a much more fragile endeavor than recognized.

Micronutrients and Cellular Energy

The most fundamental process to health and survival involves the conversion of consumed nutrients into ATP. Absent adequate ATP, health is impossible. Energy metabolism requires a ready supply of macronutrients (carbohydrate, protein, and fats) and at least 22 micronutrients or vitamins and minerals (see Figure 1.).

In developed countries, macronutrients are readily available, often in excess. Micronutrient intake, however, is inconsistent. A review article from the University of Oregon report found that a large percentage of the population had inadequate micronutrient status (4-65% depending upon the nutrient) despite excessive caloric intake. Moreover, much of the supposed nutrient sufficiency came from enriched or fortified foods. In other words, absent food enrichment or fortification, most children, adolescents, and adults had insufficient micronutrient intake. Inasmuch as most fortified foods come with a high caloric content, which effectively demands a higher micronutrient content to metabolize it; this presents a problem.

mitochondrial nutrients
Figure 1. Mitochondrial Nutrients, from: Thiamine Deficiency Disease, Dysautonomia, and High Calorie Malnutrition

Thiamine Dependent Enzymes

From the graphic above, note how many times thiamine (vitamin B1 or TPP) appears. Thiamine is required for the transketolase (TKT), pyruvate dehydrogenase complex of enzymes (PDC), branched chain keto acid dehydrogenase (BCKAD), 2-Hydroxyacyl-CoA lyase (HACL), alpha-ketoglutarate dehydrogenase ([a-KDGH] – also called 2-oxoglutarate dehydrogenase complex [OGDC]) and for lactate recycling as a cofactor for the lactate dehydrogenase complex (LDH). Beyond its coenzyme role, thiamine allosterically regulates the expression and activity other mitochondrial proteins including:

  • Succinate thiokinase/succinyl-CoA synthetase: together with a-KDGH catalyzes succinyl-CoA to succinate.
  • Succinate dehydrogenase: oxidizes succinate to fumarate, uses the electrons generated to catalyze reduction of ubiquinone to ubiquinol for complex II (TCA>ETC linkage)
  • Malate dehydrogenase (MDH): interconversion of malate and oxaloacetate with cofactor NAD+ or NADP+.
  • Pyridoxal kinase: converts dietary vitamin B6 into the active cofactor form pyridoxal 5′-phosphate (PLP) creating a functional deficiency.

With low or absent thiamine, each of these enzymes downregulates from 10% to almost 30% resulting in a reduction of ATP from 38 to ~13 units (in culture).

Thiamine Is Fundamental

Among the 22 micronutrients needed to convert macronutrient ATP, thiamine, along with its cofactor, magnesium, sit at the entry points to this process. That means that thiamine availability controls the rates of carbohydrate, protein, and fat metabolism and their subsequent conversion into ATP. Insufficient thiamine, even marginally so, impedes this process resulting in not only reduced ATP, but also, impaired cellular respiration, and increased oxidative stress and advanced glycation end products (AGEs); the very cascades linked to the preponderance of modern diseases dominating the healthcare landscape.

  • Cellular respiration, the ability to use molecular oxygen, requires ATP, which requires thiamine. Insufficient thiamine causes cell level hypoxia and upregulates the expression of hypoxia inducible factors (HIFs). HIFs are responsible for oxygen homeostasis, regulating at least 100 other proteins including those involved in angiogenesis, erythropoiesis and iron metabolism, glucose metabolism, growth factors, and apoptosis. HIF stabilization is implicated in a range of illnesses from autoimmune disease, to heart disease and cancer.
  • Reactive oxygen species (ROS) are a natural byproduct of ATP production and serve as useful mitochondrial signaling agents. Elevated ROS, relative to antioxidant capacity, however, creates oxidative stress, damaging cellular lipids, proteins and DNA. Antioxidant capacity is reduced with thiamine deficiency while ROS are increased.
  • AGEs, the toxic byproducts of hyperglycemia and oxidative stress, are modulated by thiamine. With sufficient thiamine, AGE precursors are shunted towards energy metabolism via the transketolase and the pentose phosphate pathway rather than accumulating in tissue as reactive carbonyl intermediates common with metabolic disease.

Each of these play a role in the pathophysiology of diabetes, cardiovascular and neurodegenerative diseases. This makes thiamine status, by way of its role in ATP production, cell respiration, ROS management, and AGE metabolism, a critical variable determining health or disease.

Given its position and role in these processes, it is not difficult to imagine how insufficient thiamine intake might derange and diminish energy metabolism and how that, in turn, might impact metabolic health both locally at the cell, tissue and organ level, and systemically. What is difficult to imagine, however, given the miniscule RDA requirement for a little over a single milligram of thiamine, is how anyone in the developed world where food scarcity is rare, where thiamine is readily available in both whole foods and in fortified foods, becomes thiamine deficient. And yet, a growing body of research suggests that is exactly what is happening. Recall from above, that depending upon the population studied, insufficient thiamine to frank deficiency has been found in 20-98% of the patients tested.

Modern Challenges to Thiamine Sufficiency From Consumption to Utilization

As an essential nutrient, thiamine must be consumed from foods, absorbed, activated and transported to where it is needed, and then utilized by its cognate enzymes. At each of these steps there are challenges that diminish thiamine availability, effectively increasing thiamine need well beyond the current RDA values. In fact, many of the products and amenities that make modern living what it is, imperil thiamine status and do so at multiple junctions. The additive effects of these challenges leaves many vulnerable to deficiency.

Dietary Sources of Thiamine

The highest concentrations of thiamine in natural and non-manufactured foods come from pork, fish (salmon, trout, tuna, catfish), many nuts and seeds (macadamia, pistachios, sunflower seeds, flax seed), beans (navy, black, black-eyed peas, lentils), peas, tofu, brown rice, whole wheat, acorn squash, asparagus, and many other foods. A diet rich in organic, whole foods is generally sufficient to meet the daily requirements for the thiamine and other vitamins and minerals. Likewise, though less ideal, a diet of processed foods that has been enriched or fortified with thiamine, will meet the RDA for thiamine quite easily, perhaps even exceed it. Indeed, one serving of breakfast cereal is sufficient to reach the RDA for thiamine.

Despite the ready availability of thiamine in both whole and processed foods, the data suggest that many people find it difficult to maintain thiamine status. This is due to the interactions between the endogenous chemistry of thiamine metabolism and the chemistry of exogenous variables affecting thiamine stability. The most common factors affecting thiamine status, include high calorie, high toxicant load diets, alcohol and/or tobacco use, caffeine products, and pharmaceutical and chemical exposures.

Dietary Impediments to Thiamine Sufficiency

While fortification provides access to thiamine, highly processed foods carry a high calorie and toxicant count making them metabolically deleterious despite any potential gains from vitamin enrichment or fortification. High carbohydrate, highly processed foods diminish thiamine status by multiple mechanisms.

Other common dietary contributors to insufficient thiamine.

Although food scarcity is not as prevalent in developed countries compared to undeveloped regions, poverty still impacts nutrient status. This owes largely to the fact that highly processed foods, high calorie foods are less expensive than whole foods and thus, there is an over-reliance on carbohydrate consumption to meet caloric requirements. Here, obesity and metabolic dysfunction co-occur with micro-nutrient and sometimes macronutrient, e.g. protein, deficiency.

Pharmaceutical and Environmental Threats to Thiamine Status

After high calorie malnutrition and other dietary habits that limit thiamine availability, the next most common threat to thiamine sufficiency is the use of pharmaceuticals. This variable cannot be stressed enough. Pharmaceutical chemicals deplete thiamine and other nutrients, directly or indirectly by a number of mechanisms.  Some of this is by design, such as with antibiotics that target folate and thiamine, some of it represents off-target effects, such as the blockade of thiamine transporters by metformin and the other 146 drugs tested for this action, an increase in demand in order to withstand other mitochondrial damage. Regardless of the intended purpose, however, pharmaceuticals represent chemical stressors to thiamine and nutrient stability. As such, their regular use necessitates a concerted approach to maintain nutrient status. Some of the most commonly used medications are the biggest offenders:

In addition to the ingestion of pharmaceutical chemicals, environmental chemical exposures damage mitochondrial functioning, even at low, and what are considered, non-toxic exposures. These exposures are pervasive, often unavoidable, and tend to accrue over time, with additive and synergistic effects to other stressors. Consider the totality of a patient’s toxic load when addressing the risk of nutrient insufficiency.

Absorption and Metabolism

Assuming sufficient thiamine is ingested from diet and is not blocked or otherwise degraded by food, pharmaceutical or environmental chemicals, it then has to be absorbed in the intestines before it can be activated and transported to organs and tissues for use. Epithelial injury, microbial dysbiosis, and genetic variation, all of which are common, limit the effectiveness of this phase. Epithelial injury and microbial dysbiosis slow passive absorption, while genetic, epigenetic, and environmental variables, slow or block active transport.

At low concentrations, thiamine is absorbed in the small intestine by active transport, while higher concentrations are absorbed by passive diffusion. Active transport is mediated by two primary thiamine transporters, ThTR1 and ThTR2, and a number of additional transporters that fall under the solute carrier family of genes:

  • SLC19A1: folate transporter, but also, transports thiamine mono- and di- phospho derivatives.
  • SLC19A2 (ThTr1): systemic thiamine transport, main transporter in pancreatic islet tissue and hematopoietic cells; most abundant, from highest to lowest in the intestine, skeletal muscle, nervous system, eye, placenta, liver, and kidney.
  • SLC19A3 (ThTr2): primary intestinal thiamine transporter, also located in adipose tissue, breast tissue, liver, lymphocytes, spleen, gallbladder, placenta, pancreas, and brain.
  • SLC22A1 (OCT1): organic cation transporter 1, primary hepatic thiamine transporter; competitively inhibited with transport of metformin, xenobiotics, and other drugs.
  • SLC25A19 (MTPP-1): mitochondrial thiamine pyrophosphate carrier.
  • SLC35F3: endoplasmic reticulum and Golgi thiamine transporter, implicated in hypertension.
  • SLC44A4 (hTPPT/TPPT-1): absorption of microbiota-generated thiamine pyrophosphate in the large intestine.

Although conventional wisdom suggests that only homozygous mutations affect the performance of these proteins, in reality, there is a gradation of abnormalities that challenge thiamine uptake, particularly when environmental or pharmaceutical variables block or otherwise limit the functioning of the same protein. In some cases, genetic difficulties can be compensated for providing nutrient support at supraphyisiological doses, among the better known examples:

  • Thiamine responsive megaloblastic anemia (mutations in SLC19A2/ThTr1); megaloblastic anemia, progressive sensorineural hearing loss, and diabetes mellitus.
  • Biotin-thiamine responsive basal ganglia disease (mutations in SLC19A3/ThTr 2) presents in infancy or childhood with recurrent subacute encephalopathy, confusion, seizures, ataxia, dystonia, supranuclear facial palsy, external ophthalmoplegia, and/or dysphagia or Leigh-like syndrome with infantile spasms. When presenting in adulthood, acute onset seizures, ataxia, nystagmus, diplopia, and ophthalmoplegia.
  • Thiamine responsive Leigh Syndrome (mutations in in the SLC19A3/ThTr2).
  • Thiamine metabolism dysfunction syndrome-4 (mutations SLC25A19/MTPP-1); episodic encephalopathy and febrile illness, transient neurologic dysfunction, and a slowly progressive axonal polyneuropathy.
  • Thiamine Pyrophosphokinase 1 (TPL1) defects cause problems in the activation of free thiamine to thiamine pyrophosphate, rendering much of the thiamine consumed unusable. TPK1 defects have been identified as condition called thiamine metabolism dysfunction syndrome 5 or Leigh-like syndrome because of the similarity in symptoms. More recently, TPK1 defects have been found associated with Huntington’s disease. High dose thiamine appears to overcome the defect in some cases.

Thiamine Activation/Deactivation

Before it can be used, free thiamine has to be phosphorylated into its active form thiamine pyrophosphate (TPP), also called thiamine diphosphate (ThDP/TDP). This is done by the enzyme thiamine pyrophosphokinase (thiamine diphosphokinase), which is magnesium dependent and requires ATP. Magnesium deficiency is common in developed countries. TPP accounts for almost 90% of circulating thiamine.

Additional thiamine metabolites include thiamine monophosphate (TMP) and thiamine triphosphate (TTP) along with the recently discovered adenosine thiamine triphosphate (AThTP) and adenosine thiamine diphosphate (AThDP). AThTP and AThDP are produced by E.coli during periods of nutrient starvation and have been found in most mammalian tissue. This likely represents a salvage pathway common in many pathogenic microbes.

Microbial Thiamine Synthesis

It is important to note, that although the consumption of dietary thiamine provides the main sources of this nutrient systemically, a smaller, but notable (2.3%), percentage of thiamine and other B vitamins is produced endogenously by various commensal bacterial populations in both the small and large intestines. At least 10 species of bacteria synthesize thiamine that is absorbed and utilized by the colonocytes. Endogenous thiamine synthesis is reduced by diets high in simple carbohydrates but increased with complex carbohydrates. Antibiotics and other medications inhibit endogenous synthesis of B vitamins directly by design as in the case trimethoprim and sulfamethoxazole and indirectly via additional that disrupt thiamine availability. Additionally, a number of pathogenic microbes produce enzymes that degrade bacterially produced thiamine suggesting the balance of gut biota is influenced by and influences nutrient availability.

In the large intestine, bacterially synthesized TPP is absorbed directly into the colon via a population of TTP transporters (TPPT-1) in the apical membrane and then transported directly into the mitochondria via the MTPP-1 for ATP production. The reduction of colonocyte thiamine and thus ATP, would force a shift towards the more pathogenic microbial populations that thrive in nutrient deficient environments and dysregulate bowel motility. This local thiamine deficiency may be a contributing factor in large bowel microbial virulence and the dysmotility syndromes so common in modern medical practice.

Enzyme Activation

The final step in attaining thiamine sufficiency is utilization. Returning to Figure 1., the key enzymes involved in this process include: TKT, PDC, HACL, BCKAD, a-KGDH and LDH.  This is an addition to the enzymes involved in the phosphorylation of free thiamine and the remaining enzymes in the Krebs cycle whose gene expression depends upon thiamine status. As with the variances and mutations in the transporters, supraphyisiological doses of thiamine may compensate for decrements in enzyme function. This has been observed in thiamine responsive PDC deficiency, characterized by excessive lactic acid; and in maple syrup urine disease, where mutations in the thiamine dependent BCKAD enzyme responsible for amino acid metabolism is impaired; also in Leigh-like syndrome, where mutations in TPK1 enzyme, which converts free thiamine to active TPP, is affected.

Is the Thiamine RDA Sufficient?

Both the chemistry and the data suggest that the current RDA of just a single milligram of thiamine is insufficient to meet the challenges presented by modern diets and chemical exposures. Owing to its role in energy metabolism, thiamine insufficiency may underlie many of the disease processes associated with metabolic dysfunction, where cellular hypoxia, increased ROS and AGEs are present. These disease processes develop long before, and sometimes absent, frank deficiency suggesting there may be gradations of insufficiency relative to the individual’s metabolic needs. Whether thiamine is a causative variable in these disease processes or simply a consequence of a complicated history of negative interactions between genetics, diet, and exposures is unclear. What is clear, however, is that thiamine insufficiency is likely far more prevalent than recognized and given its role in energy metabolism, ought to be addressed more consistently in clinical care.

We Need Your Help

More people than ever are reading Hormones Matter, a testament to the need for independent voices in health and medicine. We are not funded and accept limited advertising. Unlike many health sites, we don’t force you to purchase a subscription. We believe health information should be open to all. If you read Hormones Matter, like it, please help support it. Contribute now.

Yes, I would like to support Hormones Matter. 

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Vitamin Therapy Paradox: Getting Worse Before Getting Better

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Does modern medicine accept the idea of vitamin therapy? The answer is a resounding no!  It has only been a little over 100 years since vitamins were synthesized. Of course, as everybody knows, all of these chemical substances were found to exist in natural food. They were very much part of the mystery of evolution. Essential to all animal life, they were there for the picking. Later, it was also found that a number of essential minerals were required. Both the vitamins and minerals need to be present in minute doses, covered under the eponym of recommended daily allowance (RDA). All we had to do was to obey the rules set out by Mother Nature. Our ancestors were classified as “hunter gatherers”. They hunted animals and gathered the bounty of nature. Yes, we were primitive savages and life was not the ideal by any means, but the food contained all that was necessary for life.

An Evolutionary Imperative To Eat Real Food

To ascertain what kind of food is required by an animal, you simply look at the teeth. We have front teeth called incisors for cutting, the pointed teeth called canine for tearing meat and the back teeth molars, used for grinding. Cows and horses are vegetarian and only have molar grinders. Human beings are omnivores (all foods edible) meaning that we are designed to eat meat, fruit and vegetables. Some of the vitamins are recycled through eating other animals. Others are recycled by being returned to the soil and passing into plants. That is why I have said to many people in answering the question as to what diet they should pursue, eat only nature made food and leave the man made food alone. Well, of course, you know that we didn’t do that.

We now have a food industry and it is quite unbelievable, at least to me, to see some of the stuff that passes as food, based solely on taste and appearance. Sometimes I find a person with these typical symptoms who is very careful with diet and does not practice taste hedonism, but because farming practices have changed in modern times, the produce does not have the same kind of non-caloric nutrient content. It may not be coincidental that such persons are almost invariably intelligent and physically and mentally active. It is reasonable to assume that their nutritional demand exceeds supply and they need non-caloric nutrients.

Sugar and the Vitamin Paradox

Now let me turn to the reason that I used “vitamin paradox” in the title. Anyone that wants to follow my reasoning can look back at previous posts on this website. You will find that there is a significant emphasis on the calamity of sugar ingestion and its association with vitamins, particularly thiamine. I am sure that I will look like a broken record to many people, but here is what happens to your health. Although it is obvious that all the vitamins and essential minerals are required, I am taking the example of thiamine because of its close association with the wide consumption of things called “goodies” or “sweets”.

All simple carbohydrate foods are broken down in the body to glucose. Research has shown that overloading the metabolism with sugar overwhelms the capacity of cellular machinery to burn (oxidize) it by producing a relative deficiency of thiamine, the vital catalyst that ignites (oxidizes) glucose to synthesize cellular energy for function. Recently it has been found that thiamine is required for the oxidation of fats, making the doughnut a perfect example of high calorie malnutrition. This is so important in the brain that I simply cannot overstate it.

High Calorie Malnutrition, Oxygen Deprivation and Brain Function

High calorie malnutrition is exactly equivalent to a mild degree of oxygen deprivation, so it is sometimes referred to as pseudo-hypoxia (false oxygen deprivation). If this is induced by poor diet where the pleasure of taste (hedonism) overrides appropriate nutrition, a curious thing happens! The lower part of the brain that deals automatically with your ability to adapt to a hostile environment becomes much more susceptible in its responsiveness.

I will give you one example: panic attacks, so extraordinarily common in our culture, are simply fight-or-flight reflexes that are triggered by pseudo-hypoxia. Messages go out to the body from this part of the brain, falsely initiated as though you were actually being “chased by a tiger”. Such an affected person will begin to experience the following symptoms as examples: palpitations of the heart, unusual sweating, a sense of anxiety or panic, irritable bowel syndrome, manifestations of allergy, emotional lability (emotions out of control) etc.  He or she will go to the doctor who will do a series of tests. If they are all normal, you will then be told that this is “all in your head” (psychosomatic). On the other hand, the doctor might find evidence for “mitral valve prolapse” (MVP), now known to be an early sign of “wear and tear” damage in the heart and the focus becomes “heart disease”(often used to explain heart palpitations) rather than its original cause, associated with nervous system dysfunction. I have seen MVP disappear in people from correcting their nutrition. It is rare for a patient to be asked about diet and rarer still to question the possibility of a vitamin deficiency.

Vitamin Deficiency: The Walking Sick

This kind of health situation may go one for a long time. The patient has symptoms but is not really a sick person. I refer to people like this as the “walking  sick”. Life continues as usual, but medications have failed to relieve the symptoms, or worse yet have introduced side effects. Over time, the loss of metabolic efficiency gradually leads to damage in cellular machinery (e.g. MVP) because the energy need to drive daily function is not being met. Thiamine activates the most important enzyme in energy synthesis and, in the early stages of nutritional deprivation, a thiamine plus multivitamin supplement would quickly abolish the symptoms. If neglected and the marginal malnutrition continues, it will be gradually more difficult to repair the damage.

Vitamin Therapy With Chronic Deficiency: Expect a Decline Before Improving

Physicians who practice Alternative Medicine have found that it is possible sometimes to retrieve function at this late stage of development by the use of a course of vitamins given intravenously. They have also learned that the symptoms of the patient actually get worse (paradox) in the initial stages of intravenous treatment but begin to get better following an unpredictable period of worsening. Naturally, the patient concludes that the treatment is bad or that it is causing side effects as in the use of vitamins. That is why I have christened it paradox, meaning that the unexpected happens.

Over the years of administering intravenous vitamin therapy for all kinds of conditions, irrespective of conventional diagnosis, I quickly learned to inform a patient about paradox before instituting treatment. Surprisingly, this paradoxical response usually heralds a good outcome. I do have some ideas about the cause of paradox, but it is so technical that I cannot attempt it here, perhaps in future posts. Intravenous vitamins are tremendously effective in the improvement of most chronic diseases, an effect that is almost impossible to achieve with the standard treatment of drugs as used in modern medicine today.

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Thiamine Deficiency in Modern Medical Practice

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thiamine deficiency in modern medical practice

Modern medical practices are plagued with patients who present with chronic, complex, and seemingly treatment resistant illness; illnesses that defy most laboratory testing and abound current diagnostic categories. Some data suggest that 25-75% of symptoms experienced by these patients fall under the umbrella of ‘medically unexplained symptoms’.

What if some of those symptoms were not only explainable but treatable and the expression of these illnesses manifested not from some complicated new disease but from a simple but forgotten nutrient deficiency? What if this nutrient was uniquely critical to mitochondrial competence such that its insufficiency would derail energetic capacity, affect cellular function broadly and diversely, and produce many of the symptoms currently ascribed as medically unexplained? Wouldn’t this be worthy of investigation in your patient population?

That nutrient is thiamine or vitamin B1 and it is essential to mitochondrial energetics – the conversion of food into adenosine triphosphate (ATP). This process is the backbone of all health, and absent sufficient thiamine, it grinds to a halt producing many of the diseases processes vexing modern medicine.

Thiamine is a critical and rate-limiting cofactor to five key enzymes involved in this process, including those at the entry points for the glucose, fatty acid, and amino acid pathways. It has a very short half-life (1-12 hours), limited storage capacity, and is susceptible to depletion and degradation by a number of products that epitomize modern life.

When thiamine is insufficient to overcome these variables, oxidative metabolism falters and the ability to generate molecular energy declines. Over time, aerobic respiration turns anaerobic, oxidative stress increases, and cellular, tissue, and organ function dependent upon steady state energetics deteriorates.

Anaerobic glycolysis, the telltale sign of everything from general metabolic dysfunction to cancer, is, at its root, an adaptive response to insufficient micronutrients like thiamine. Replenish thiamine, recover mitochondrial capacity, and aerobic metabolism and health improve.

Critically Ill Versus Walking Sick: Gradations of Insufficient Thiamine

Conventionally, thiamine deficiency syndromes have been described relative to overt, and often later stage illness in the hospital setting. The most common designations include: Wernicke’s encephalopathy marked by nystagmus, ataxia, and cognitive deficits; wet beriberi or high output cardiac failure with edema and dry beriberi, central and peripheral nervous system and cardiovascular disturbances without edema. More recently, sensorimotor polyneuropathy or neuritic beriberi, gastrointestinal dysmotility syndromes, and the dysautonomias have been included in the spectrum, but recognition is lagging.

These designations give the false illusion of a disease process that happens acutely and one that can be categorized by the afflicted organ system. Neither is accurate. While overt thiamine deficiency is certainly a medical emergency and may sometimes develop acutely, the vast majority of cases represent a culmination of years, if not decades, of insufficient thiamine intake relative to need. Until fulminant, these disease processes are marked by low mortality, but high, chronic, and polysymptomatic morbidity. This suggests ample opportunity to treat and prevent more serious illness, improve the patient’s quality of life, and possibly even regain health. Even in overt and emergent cases, where symptomology is obvious, resolution is possible with thiamine repletion.

Thiamine Depleting Factors

Thiamine deficiency is most commonly associated with food insecurity and chronic alcoholism; a narrow view that risks missing early signals of accruing disease across patient populations. Contributors to this deficiency are far more prevalent in first world countries with westernized food production than is recognized. Among the key dietary contributors to insufficient thiamine:

  • Alcohol
  • Tobacco
  • High carbohydrate, highly processed foods
  • Coffee, tea, energy drinks

Additionally, the regular use of common medications and/or exposures to environmental chemicals independently and synergistically provoke thiamine deficiency. Every medication and environmental chemical depletes thiamine directly or indirectly by a number of mechanisms including blocking thiamine uptake, increasing its degradation, preventing synthesis in gut microbiota, increasing excretion and/or by inducing mitochondrial damage by other means that then necessitates a higher thiamine intake to compensate. Some of the most commonly used medications are the biggest offenders:

Sadly, poor dietary habits trigger thiamine insufficiency independently, leading to the prescription of many of these medications, which then further derail thiamine status and mitochondrial capacity. It is an illness spiral that can only be resolved by addressing diet and mitochondrial nutrients like thiamine.

Genetic Contributors to Thiamine Deficiency

While thiamine deficiency diseases are predominantly attributable to diet and lifestyle variables, a number of common genetic polymorphisms in the solute carriers responsible for thiamine uptake, and in enzyme activity involved in thiamine metabolism, increase the demand for thiamine intake. In these cases, disease expression, particularly later in life, represents a latent genetic vulnerability triggered by environmental or lifestyle stressors. Many medication and vaccine reactions fall into this category.

Prevalence Across Patient Groups

Inasmuch as thiamine status is not regularly evaluated in clinical care, it is difficult to know how pervasive thiamine deficiency is within the general population. Moreover, there are no universally accepted cutoffs demarking the progression from suboptimal to frank deficiency. Of the data that do exist, it is likely far more common than recognized across a broad swathe of patient populations.

Strikingly, diabetes confers one of the largest risks for thiamine deficiency across patient populations. This is largely do to metabolic derangements (to be discussed in a subsequent post) initiated by the hyperglycemia. These include the increased excretion of thiamine, and interestingly, the endogenous production of the anti-thiamine molecule oxythiamine.

Thiamine Testing

Laboratory assessment of thiamine status varies in sensitivity and specificity, with some tests carrying a high false negative rate (standard serum and plasma), particularly when thiamine status is marginal and with recent intake of thiamine. The two most sensitive tests are whole blood HPLC and the erythrocyte transketolase activity/thiamine pyrophosphate effect combination, neither of which is readily available. Urinary organic acid tests, while indirect, may provide useful patterns for determining the need for thiamine and other mitochondrial nutrients.

How To Recognize Thiamine Insufficiency

In light of the difficulties associated with laboratory testing, clinical acumen is required. Given its role in energy metabolism, lack of energy, in multiple manifestations, is a cardinal indicator of insufficiency.

  • Chronic fatigue, muscle weakness, or pain
  • Hypersomnia or anorexia
  • Dysautonomic reactions – exaggerated, ill-timed, or inadequate autonomic responses to stressors, most notably in the brain, heart and/or GI system

Office observations to support thiamine insufficiency:

  • Subtle changes in gait, stability, muscle tone, speech, decrements cognitive or affective acuity or stability
  • Asymmetrical pulse pressure, postural hyper- or hypotension, general tachycardia (early stage), bradycardia (later stage)

Standard labs pointing to problems with energy metabolism:

How to Treat

While clinical practice guidelines exist for overt thiamine deficiency in hospital, which include the use of IV thiamine and additional nutrients at a range of doses dependent upon severity, there are no established guidelines for out-patient thiamine deficiency or insufficiency syndromes. This is partly due to its lack of recognition and partly due to the fact that individual need for thiamine, other mitochondrial co-factors, and response to repletion, varies considerably.

There are no known toxicities to high doses, however, there can be negative reactions in the initial phases of thiamine repletion for a subset of patients. These reactions can occur at any dose. In some cases, the reaction involves the specific formulation of thiamine. In other cases, electrolyte disturbances and/or other micronutrient deficiencies unmasked by thiamine are at fault. To mitigate these reactions, thiamine should always be given with magnesium (~50% of the population consumes less than the RDA and magnesium is required to activate thiamine), a clean, lower dose multi-vitamin and a potassium rich diet. It should be noted that additional calcium may also be needed (here, here), especially when dietary calcium has been low for an extended period. Hypophosphatemia may develop as well in patients with recent or extended GI illnesses and/or have a history of low protein consumption and sodium disturbances are also common.

Consider Thiamine

Thiamine is a safe, non-toxic, essential nutrient that has become increasingly difficult to maintain in the face of modern dietary practices and chemical exposures. Thiamine sufficiency is fundamental to energy metabolism, mitochondrial capacity, and thus, health. Consider thiamine in your practice.

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Eosinophilic Esophagitis May Be a Sugar Sensitive Disease

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Eosinophilic Esophagitis

In 2011 a mother called me and asked whether I would be able to help her 14-year old son who had been diagnosed with eosinophilic esophagitis. Because this disease had only been recognized in the past two decades I had to confess that I had never heard of it. Because I used only nutrients in therapy, I confessed my ignorance but that I was willing to have a shot at it. Obviously, the first thing that I did was to see what had been written about this newly recognized condition.

Eosinophilic Esophagitis: Inflammation of the Esophagus

The part of the gastrointestinal tract that is most commonly affected by this inflammatory infiltration is the esophagus (esophagitis), although it has been recorded in other parts of the intestine when it is known as eosinophilic enteritis. Eosinophils are specialized white cells that have a role in inflammation. They have this particular name because they stain with a dye called eosin (the postfix phil is derived from the Latin word for love) making it easy for a pathologist to recognize their presence in tissues.

Eosinophilic esophagitis (EoE) is now by far the most common form of eosinophilically infiltrated gastrointestinal disease. It represents the most recent form of food allergy, and its control by avoiding offending foods has increasingly appeared as a therapeutic approach. It is often poorly responsive to therapy and there is no commonly accepted long-term treatment. The diagnosis has to be made by endoscopy and it is distinguished from other causes of inflammation by finding eosinophils in the inflammatory area.

A Complex Medical History Misdiagnosed As Psychosomatic

The medical history of this 14-year-old boy had begun in infancy with recurrent ear infections and asthma, entailing many doctor visits. But he also had many confusing symptoms throughout childhood other than the chest pain and swallowing difficulties that might be expected from inflammation of the esophagus. In fact, these symptoms had been thought of as psychosomatic until endoscopy was performed when he was 8 years old and the esophagitis was discovered. From that time on, he had been examined repeatedly and had received conventional treatment without success at several prestigious institutions. He came to my attention 6 years after the diagnosis had been made.

His early history of repeated ear infections and asthma were important because both of these conditions are now known to be related to inefficient oxidative metabolism. Eosinophils are associated with asthma in some cases. The symptoms that had been considered to be psychosomatic included a dramatic response to any physical pain producing stimulus (hyperalgesia), emotional instability, unusual fatigue, headaches, dizziness, panic attacks and increased sensitivity to both sound and light. For example, when I came to the physical examination he would scream when I touched his abdomen and the abdominal muscles would become rigid. Another intriguing symptom was that he coughed in his sleep (an exaggerated cough reflex) without becoming awakened and he also experienced nightmares. He had also been diagnosed by a psychologist with ADHD and OCD. But on physical examination, I also found many intriguing signs that indicated autonomic nervous system dysfunction. The medical history also indicated that he was addicted to sugar, and alcoholism was widespread on both sides of the family, both being related to thiamine metabolism. People who have read some of the posts on this website will be familiar with the association of thiamine deficiency with sugar ingestion and alcohol.

A Family History of Alcoholism and Thiamine Metabolism

Because of this family history of alcoholism, his addiction to sugar, and the known relationship of thiamine deficiency with autonomic dysfunction, I used the blood test known as erythrocyte transketolase and I was not too surprised to find that it was extremely abnormal, proving a severe degree of thiamine deficiency or abnormal thiamine metabolism. He was treated with a series of intravenous infusions of water-soluble vitamins that contained thiamine hydrochloride. Although his symptoms began to improve, the transketolase test became much more abnormal, suggesting that thiamine was not being absorbed into the cells that needed it. Thiamine tetrahydrofurfuryl disulfide (TTFD: Lipothiamine, a derivative of thiamine that is absorbed more easily because it does not require the complex mechanism that is required for the absorption of dietary thiamine) was substituted for the thiamine hydrochloride with the result that the transketolase improved greatly.

Symptoms continued to improve but the most surprising thing that happened was the tremendous growth spurt that occurred throughout a year of treatment. Body weight at the beginning of treatment was 105 pounds, placing him in the 25th percentile. After one year of treatment his weight had increased to 122 pounds (+17#), placing him in the 50th percentile (e.g. male or female members of a school class). His stature increased in the same time period from 64.5 inches to 68.5 inches (+4”), raising it from the 50th to the 75th percentile. Percentiles are used in growth charts to indicate the normal height and weight of an individual as compared with subjects of the same age. For example, the fiftieth percentile would mean that 50% of a given similar group (e.g. a school class) would be taller/heavier and 50% shorter/lighter. For normal height and weight a subject remains in the same percentile throughout growth. A “jump” of this nature is extremely rare. It is unlikely that he would have been considered growth retarded if this dramatic acceleration had not occurred. He would have just been regarded as a “shorty”.

Dysautonomia

As reported in several posts on this website, dysautonomia is used to describe changes in the functional controls of the autonomic (automatic) nervous system. There are two branches to this system known as sympathetic, the action system, and parasympathetic, the “rest and be thankful” system. The first one is activated by any form of stress that includes a mild degree of oxygen lack (hypoxia) in the lower part of the brain or its equivalent from lack of thiamine and known as pseudohypoxia. There is also a genetically determined disease known as Familial Dysautonomia (FD) in which growth retardation is a constant feature. Although FD is a genetically determined disease, it is the resulting dysautonomia that causes growth failure. This suggests that the long-standing dysautonomia in this patient, due to energy inefficiency in brain cells caused by the pseudohypoxia of thiamine deficiency, was responsible for growth failure. Restoration of thiamine concentrations caused improvement in energy metabolism that enabled the growth spurt to take place.

Conclusion: Inflammation Is a Defensive Response

Inflammation is really a defensive response made by the body to some form of attack. In the case of this disease it appears that certain foods act as the attacking agent, hence the term food allergy. The inflammatory reaction is kept under very careful control by the brain acting through a nerve that runs the entire length of the intestinal tract. If this nerve fails in its suppressive action, the inflammation gets out of control. For the normal function of this nerve thiamine is a necessity. But thiamine deficiency, because it results in pseudohypoxia, also activates the sympathetic branch of the autonomic system and was responsible for the many symptoms that had been previously described as psychosomatic. It is very likely that the huge ingestion of sugar in the United States is responsible for thiamine deficiency that results in manifestations of disease that vary in their presentation according to the particular cells affected by the deficiency. Because of the family history I strongly suspect that there was a genetic relationship that created this boy’s sensitivity to foods, particularly sugar, making thiamine deficiency much more likely. It is of course possible that this is but one cause of eosinophilic esophagitis/enteritis. It suggests however that some form of pseudohypoxia (other than thiamine deficiency) is the root cause of the disease and that the inflammatory response gets out of control because of autonomic dysfunction. This case is now “in press”.

Lonsdale D. Is Esosinophilic Esophagitis a Sugar Sensitive Disease? J Gastric Disord Ther 2016;2(1):doihttp://cbcdoi.org/10.16966/2381-8689.114.

We Need Your Help

More people than ever are reading Hormones Matter, a testament to the need for independent voices in health and medicine. We are not funded and accept limited advertising. Unlike many health sites, we don’t force you to purchase a subscription. We believe health information should be open to all. If you read Hormones Matter, like it, please help support it. Contribute now.

Yes, I would like to support Hormones Matter. 

Photo by Myriam Zilles on Unsplash.

This article was published originally on February 8, 2016.

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