Plant-Based Nutritional Deficiencies

The purpose here is to highlight the nutritional deficiencies of plant-based diets but most specifically plant-exclusive diets such as veganism (important nutrients are listed below). Not all of these deficiencies involve essential nutrients, but our knowledge is limited on what is essential. There are deficiencies that will kill you quickly, others slowly, and still others that simply will cause deteriorating health or less than optimal functioning. Also, some of these nutrients or their precursors can be found in plant foods or otherwise produced by the body, but there can be several problems. The plant-based sources may be inadequate or not in the most bioavailable form, antinutrients in the plants may block the absorption of certain nutrients (e.g., phytates block mineral absorption), gut and microbiome problems related to a plant-based diet might interfere with absorption, and most people have severely limited capacity to turn certain precursors into the needed nutrients.

So, when eating a supposedly healthy diet, many vegans and vegetarians still have major deficiencies, even with nutrients that should be in their diet according to standard food intake calculations — in those cases, the nutrients are there in theory but for some reason not being absorbed or utilized. For example, raw spinach has a lot of calcium, but it is almost entirely unavailable to the body. Adding raw spinach to your smoothie or salad might be a net loss to your health, as the antinutrients will block the nutrients in other foods as well. Another factor is that, on a plant-based diet, nutrients can get out of ratio. Nutrients work together with some acting as precursors, others as catalysts, and still others like master hormones — such as vitamin K2 determining where calcium is transported to, preferably the bones as opposed to arteries, joints and the brain; or think about how the body can produce vitamin D3 but only if there is adequate cholesterol. As such, besides deficiencies, sometimes there can too much of a nutrient which interferes with another nutrient, as seen with copper in relation to zinc.

That is the advantage to an animal-based diet, which could even include a well-balanced vegetarian diet that emphasized dairy and eggs (Vegetarianism is an Animal-Based Diet), but unfortunately many vegetarians are near-vegan in limiting even those non-meat animal foods. Here is the reason why animal foods are so important. Other animals have similar nutritional needs as humans and so, when we eat animal foods, we are getting not only the nutrients our bodies need but in the required form and ratio for our own optimal functioning. Without animal foods, one has to study nutrition to understand all of this and then try to artificially re-create it through careful calculations in balancing what one eats and supplements, an almost impossible task that requires someone to have a scientific mindset. Even then, one is likely to get it wrong. Regular testing of nutritional levels would be absolutely necessary to ensure everything is going according to plan.

As for supplements and fortification, the nutrients aren’t always in the best form and so wouldn’t be as bioavailable nor would likely have all the needed cofactors in just the right amounts. Besides, a diet dependent on supplementation and fortification is not healthy by definition, in that the food itself in natural form lacksing those nutrients. The fact that most vegans in particular and vegetarians as well have to be extremely obsessive about nutrition just to maintain a basic level of health is not high praise to the health-giving benefits of such a plant-based diet — and hence the reason even vegetarians should emphasize the allowed animal foods (there are even vegans who will make exceptions for some animal foods, such as fish). This is probably why most people quit these diets after a short period of time and why most people who quit, including those who quit after years or decades, do so for health reasons. Among those who remain on these diets, their responses on surveys show that most of them cheat on occasion and so are getting some minimal level of animal-based nutrition, and that is a good thing for their health even as it calls into question the validity of health claims about plant-based diets (Being “mostly vegan” is like being “a little pregnant.”).

There has long been a bias against meat, especially red meat. It goes back to the ancient Greek thought of Galen and how it was adapted to Medieval society in being Christianized for purposes of maintaining social hierarchy and social control. This Galenic bias was carried forward in the Christian tradition and then modernized within nutrition studies through the surprisingly powerful influence of the Seventh Day Adventists who continue to fund a lot of nutritional studies to this day. This has had practical consequences. It has long been assumed, based on a theology of a sinful world, that eating animals would make us beastly. It’s similar to the ancient idea that eating the muscles or heart of a fallen warrior would make one strong or courageous. A similar logic was applied to plants, that they have inherent qualities that we can imbibe.

So, it has been long believed that plant foods are somehow healthier for both body and soul, somehow more spiritual and so would bring humans closer to God or else closer to their divine natural state before the Fall of Man. That has been the moral concern of many Christians, from Medieval Catholics to modern Seventh Day Adventists. And in secularized form, it became internalized by mainstream nutrition studies and dietary guidelines. Part of the purpose of eating plants, according to Christianized Galenism, was that a strong libido was considered bad and it was understood that a plant-based diet suppressed libido, which admittedly doesn’t sound like a sign of health but their idea of ‘health’ was very different. It was also worried that, along with firing up the libido, meat would heat up the entire body and would lead to a shorter lifespan. Pseudo-scientific explanations have been used to rationalize this theological doctrine, such as concerns about mTOR and IGF-1, although this requires contorting the science and dismissing other evidence.

The problem is this simply became built into mainstream nutritional ideology, to such an extent that few questioned it until recently. This has led to most researchers, nutritionists, dieticians, and other health experts to obsess over the nutrients in plants while overlooking the nutrients in animal foods. So, you’ll hear something along the lines of, “meat is not an important source of vitamin E and with the exception of liver, is not a particularly good source of fat-soluble vitamins” (Nutrients in Meat, from the Meat We Eat). Keep in mind that assertion comes from a project of the American Meat Science Association — not likely to be biased against meat. It’s sort of true, depending on how one defines meat. From Galenic thought, the notion of meat is still associated with red meat. It is true that muscle meat, particularly lean muscle meat, from beef, pork and veal doesn’t have much vitamin E compared to plant foods (M. Leonhardt et al, Vitamin E content of different animal products: influence of animal nutrition). This is why some vegetarians and even vegans see no contradiction or conflict, much less hypocrisy, in eating fish and fowl — culturally, these have for millennia been considered a separate category from meat.

Yet adequate amounts of vitamin E are found in many animal foods, whether or not we label them as ‘meat’: chicken, goose meat, fish, seafood, crayfish, butter, and cheese; and some vitamin E is also found in liver and eggs (Atli Anarson, 20 Foods That Are High in Vitamin E). We have to be clear what we mean by ‘meat’. On a meat-based diet, even to the degree of being carnivore, there are plentiful good sources of every essential nutrient, including vitamin E, and many that aren’t essential but highly conducive to optimal health. Besides animal foods, there is no other source of such immense nutrient-density and nutrient-biavailability. Plant foods don’t come close in comparison.

Also, as vitamin E is an antioxidant, it’s important to note that animal foods contain many other antioxidants that play a similar role in maintaining health, but animal-sourced antioxidants have been mostly ignored because they don’t fit the dominant plant-based paradigm. Plant foods lack these animal-sourced antioxidants. So why do so few talk about a deficiency in them for vegans and vegetarians? And why have researchers so rarely studied in depth the wide variety of nutrients in animal foods to determine their full health benefits? This is particularly odd when considering, as I already stated, every known essential nutrient can be found in animal foods but not in plant foods. Isn’t that an important detail? Why is there a collective silence among mainstream health experts?

Think about how plant antinutrients can block the absorption of nutrients, both in plant foods and animal foods, and so require even more nutrients to counteract this effect which might simply further increase the antinutrient intake, unless one is careful in following the food selection and preparation as advised by those like Steven Gundry (The Plant Paradox). Or think about how glucose competes with the antioxidant vitamin C causing an increase of scurvy if vitamin C is not increased, and yet a low-carb diet with far lower intake of vitamin C is not linked to scurvy — maybe the reason ancient Vikings and Polynesians could remain healthy at sea for months, but once a high-carb diet was introduced modern sailors were plagued by scurvy (Sailors’ Rations, a High-Carb Diet). Similarly, a plant-based diet in general might require greater amounts of vitamin E: “Plant-based foods have higher concentrations of vitamin E. And for good reason. A plant-based diet requires additional protection from oxidation of PUFA which Vitamin E helps provide through its antioxidant properties. It’s still found in adequate supply in meat” (Kevin Stock, Vitamins and Minerals – Plants vs Animals).

What is adequate depends on the diet. A diet low in carbs, seed oils, and other plant foods may require fewer plant-based antioxidants, especially if this is countered by an increase of animal-based antioxidants. It is reminiscent of the fiber debate. Yes, fiber adds bulk that supposedly will increase regularity, ignoring the fact that the research is divided on this topic. No doubt bulking up your poop makes you have larger poops and more often, but is that really a good thing? People on a low-residue carnivore diet more easily digest and absorb what the eat, and so they don’t have bulky poops — then again they don’t usually have constipation either, not if they’re getting enough dietary fat. The main cause of constipation is plant foods. So, why are people advised to eat more plant foods in the hope of resolving this issue caused by plant foods? It’s absurd! We keep looking at problems in isolation, as we look at nutrients in isolation (Hubris of Nutritionism). This has failed us, as demonstrated by our present public health crisis.

Let me throw in a last thought about antioxidants. It’s like the fiber issue. People on plant-based diets have contipation issues and so they eat more plant foods in the form of fiber in trying to solve the problem plant foods cause, not realizing that constipation generally resolves itself by eliminating or limiting plant foods. So, in relation to antioxidants, we have to ask ourselves what is it about our diet in the first place that is causing all the oxidative stress? Plant foods do have antioxidants, but some plant foods also cause oxidative stress (e.g., seed oils). If we eliminate these plant foods, our oxidative stress goes down and so our requirement of antioxidants to that degree also lessens. Our body already produces its own antioxidants and, combined with what comes from animal foods, we shouldn’t such excess amounts of antioxidants. Besides, it’s not clear from studies that plant antioxidants are always beneficial to health. It would be better to eliminate the need for them in the first place. Shawn Baker explained this in terms of vitamin C (interview with Shan Hussain, The Carnivore Diet with Dr. Shawn Baker MD):

“The Carnivore diet is deficient in carbohydrates and essential vitamins like Vitamin C, how do we make up for that? When I wanted to do this I was curious about this as well. You will see a number of potential deficiencies around this diet. There is no role of fibre in this diet. With Vitamin C we know there are some transporters across different cell membranes. In a higher glucose environment, Vitamin C is competitively inhibited and therefore we see less absorption of Vitamin C. We also see that interestingly human red blood cells do have the capacity to actually recycle Vitamin C which is something that not many people are aware of. One of the major function of Vitamin C is that it is an antioxidant. In low carbohydrate states our antioxidants systems particularly things like glutathione are regulated. We may obviate some of the need of antioxidants of the Vitamin C by regulating around systems in a low carb diet. Also, Vitamin C is very important in the function of carnitine which is part of the fat cycle. When we are ingesting carnitine we have actual transporters in the gut which can take up full carnosine. It is a misconception that we can only take amino acids, a number of di and tripeptide transporters that are contained within our gut. The other function of Vitamin C is when we don’t have sufficient Vitamin C relative to our needs, we start to develop symptoms of scurvy, bleeding gum problems, teeth falling out, sores and cuts won’t heal. This is all due to the collagen synthesis. If we look at Vitamin C’s role in collagen synthesis, it helps to take proline and lysine, hydroxyproline and hydroxylysine. In meat-based diet, we are getting that in ample amount. Even a steak has 3% of its content as collagen. There are all kinds of compensatory mechanisms.”

I’ll end on an amusing note. Chris Kresser wrote about the carnivore diet (Everything You Need to Know about the Carnivore Diet and How It Can Affect Your Health). Athough an advocate of low-carb diets and nutrient-dense animal foods, he is skeptical that carnivory will be healthy for most humans long-term. One worry is that there might be nutritional deficiencies, but the argument he makes is funny. He basically saying that if all one eats is muscle meat then key nutrients will get missed. Then he goes onto point out that these nutrients can be found in other animal foods, such as liver and dairy. So, his main concern about a carnivore diet is actually that people might not eat enough animal foods or rather not enough of certain animal foods. So, make sure you eat lots of a wide variety of animal foods if going full carnivore and apparently even critics like Kresser agree you’ll be fine, at least nutritionally. The problem isn’t too much animal foods but potentially too little. That made me smile.

Now to the whole point of this post. Below is a list of nutrients that are commonly deficient in those on plant-based diets, especially those on plant-exclusive diets (i.e., vegans). I won’t explain anything about these nutrients, as there is plenty of info online. But you can look to the linked articles below that cover the details.

  • Vitamin K2 (MK-4)
  • Vitamin D3 (Cholecalciferol)
  • Vitamin A (Retinol)
  • Vitamin B12 (Cobalamin)
  • Vitamin B6 (Pyridoxine)
  • B3 (Niacin)
  • B2 (Riboflavin)
  • Calcium
  • Heme Iron
  • Zinc
  • Selenium
  • Iodine
  • Sulfur
  • Creatine
  • Beta-Alanine
  • Carnosine
  • Beta-Alanine (Precursor to Carnosine)
  • L-Carnitine
  • Taurine
  • Choline
  • Coenzyme Q10 (CoQ10)
  • Phytanic Acid
  • DHA Omega-3 (Docosahexaenoic Acid)
  • EPA Omega-3 (Eicosapentaenoic Acid)
  • DPA Omega-3 (Docosapentaenoic Acid)
  • ARA Omega-6 (Arachidonic Acid)
  • CLA (Conjugated Linoleic Acid)
  • Phosphatidylserin
  • Cholesterol
  • Collagen
  • Complete Protein
  • Glutathione
  • Glycine
  • Essential Amino Acids (Methionine, Tryptophan, Lysine, Leucine, Cysteine, Proline, Tyrosine, Phenylalanine, Serine, Alanine, Threonine, Isoleucine and Valine)

Just for the sake of balance, I’ll also share a list of plant compounds that are problematic for many people — from Joe Cohen (20 Nutrients that Vegans & Vegetarians are Lacking):

  1. Lectins
  2. Amines
  3. Tannins
  4. Trypsin Inhibitors
  5. FODMAPS
  6. Salicylates
  7. Oxalates
  8. Sulfites, Benzoates, and MSG
  9. Non-protein amino acids
  10. Glycosides
  11. Alkaloids [includes solanine, chaconine]
  12. Triterpenes
  13. Lignins
  14. Saponins
  15. Phytic Acid [Also Called Phytate]
  16. Gluten
  17. Isoflavones

* * *

Are ‘vegetarians’ or ‘carnivores’ healthier?
Gundry’s Plant Paradox and Saladino’s Carnivory
Dr. Saladino on Plant and Animal Foods
True Vitamin A For Health And Happiness
Calcium: Nutrient Combination and Ratios
Vitamin D3 and Autophagy

The Vegetarian Myth: Food, Justice, and Sustainability
by Lierre Keit

Vegan Betrayal: Love, Lies, and Hunger in a Plants-Only World
by Mara J. Kahn

The Meat Fix: How a lifetime of healthy eating nearly killed me!
by John Nicholson

The Fat of the Land/Not By Bread Alone
by Vilhjalmur Stefansson

Sacred Cow: The Case for (Better) Meat: Why Well-Raised Meat Is Good for You and Good for the Planet
by Diana Rodgers and Robb Wolf

The Carnivore Code: Unlocking the Secrets to Optimal Health by Returning to Our Ancestral Diet
by Paul Saladino

Primal Body, Primal Mind: Beyond Paleo for Total Health and a Longer Life
by Nora Gedgauda

Paleo Principles
by Sarah Ballantyn

 
The Queen of Fats: Why Omega-3s Were Removed from the Western Diet and What We Can Do to Replace Them
by Susan Allport

The Omega Principle: Seafood and the Quest for a Long Life and a Healthier Planet
by Paul Greenberg

The Omega-3 Effect: Everything You Need to Know About the Super Nutrient for Living Longer, Happier, and Healthier
by William Sears and James Sear

The Missing Wellness Factors: EPA and DHA: The Most Important Nutrients Since Vitamins?
by Jorn Dyerberg and Richard Passwater

Could It Be B12?: An Epidemic of Misdiagnoses
by Sally M. Pacholok and Jeffrey J. Stuar

What You Need to Know About Pernicious Anaemia and Vitamin B12 Deficiency
by Martyn Hooper

Living with Pernicious Anaemia and Vitamin B12 Deficiency
by Martyn Hoope

Pernicious Anaemia: The Forgotten Disease: The causes and consequences of vitamin B12 deficiency
by Martyn Hooper

Healing With Iodine: Your Missing Link To Better Health
by Mark Sircus

Iodine: Thyroid: The Hidden Chemical at the Center of Your Health and Well-being
by Jennifer Co

The Iodine Crisis: What You Don’t Know About Iodine Can Wreck Your Life
by Lynne Farrow

L-Carnitine and the Heart
by Stephen T. Sinatra and Jan Sinatra

Food Politics: How the Food Industry Influences Nutrition and Health
by Marion Nestle

Unsavory Truth: How Food Companies Skew the Science of What We Eat
by Marion Nestle

Formerly Known As Food: How the Industrial Food System Is Changing Our Minds, Bodies, and Culture
by Kristin Lawless

Death by Food Pyramid: How Shoddy Science, Sketchy Politics and Shady Special Interests Have Ruined Our Health
by Denise Minge

Nutrition in Crisis: Flawed Studies, Misleading Advice, and the Real Science of Human Metabolism
by Richard David Feinman

Nutritionism: The Science and Politics of Dietary Advice
by Gyorgy Scrinis

Measured Meals: Nutrition in America
by Jessica J. Mudry

(Although more about macronutrients, also see the work of Gary Taubes and Nina Teicholz. They add useful historical context about nutrition studies, dietary advice, and public health.)

20 Nutrients that Vegans & Vegetarians are Lacking
by Joe Cohen

8 Nutrients You May Be Missing If You’re Vegetarian or Vegan
by Tina Donvito

7 Nutrients That You Can’t Get from Plants
by Atli Anarson

7 Supplements You Need on a Vegan Diet
by Alina Petre

The Top 5 Nutrient Deficiencies on a Plant Based Diet
by Kate Barrington

5 Brain Nutrients That You Can’t Get From Plants
by Kris Gunnars

Vitamin Supplements for Vegetarians
by Jeff Takacs

Health effects of vegan diets
by Winston J Craig

Nutritional Deficiencies and Essential Considerations for Every Vegan (An Evidence-Based Nutritional Perspective)
from Dai Manuel

Why You Should Think Twice About Vegetarian and Vegan Diets
by Chris Kresser

Three Big Reasons Why You Don’t Want to be a Vegetarian
by Alan Sears

How to Avoid Common Nutrient Deficiencies if You’re a Vegan
by Joseph Mercola

What is Glutathione and How Do I Get More of It?
by Mark Hyman

Could THIS Be the Hidden Factor Behind Obesity, Heart Disease, and Chronic Fatigue?
by Joseph Mercola

Vegetarianism produces subclinical malnutrition, hyperhomocysteinemia and atherogenesis
by Y. Ingenbleek Y and K. S. McCully

Vegan Diet is Sulfur Deficient and Heart Unhealthy
by Larry H. Bern

Heart of the Matter : Sulfur Deficits in Plant-Based Diets
by Kaayla Daniel

Copper-Zinc Imbalance: Unrecognized Consequence of Plant-Based Diets and a Contributor to Chronic Fatigue
by Laurie Warner

Vegan diets ‘risk lowering intake of nutrient critical for unborn babies’ brains’
by Richard Hartley-Parkinson

The Effects of a Mother’s Vegan Diet on Fetal Development
by Marc Choi

Vegan–vegetarian diets in pregnancy: danger orpanacea? A systematic narrative review
by G. B. Piccoli

Is vegetarianism healthy for children?
by Nathan Cofnas

Clinical practice: vegetarian infant and child nutrition
by M. Van Winckel, S. Vande Velde, R. De Bruyne, and S. Van Biervliet

Dietary intake and nutritional status of vegetarian and omnivorous preschool children and their parents in Taiwan
C. E. Yen, C. H. Yen, M. C. Huang, C. H. Cheng, and Y. C. Huang

Persistence of neurological damage induced by dietary vitamin B-12 deficiency in infancy
by Ursula von Schenck, Christine Bender-Götze, and Berthold Koletzko

Severe vitamin B12 deficiency in an exclusively breastfed 5-month-old Italian infant born to a mother receiving multivitamin supplementation during pregnancy
by S. Guez et al

Long-chain n-3 PUFA in vegetarian women: a metabolic perspective
by G. C. Burdge, S. Y. Tan, and C. J. Henry

Signs of impaired cognitive function in adolescents with marginal cobalamin status
by M. W. Louwman et al

Transient neonatal hypothyroidism due to a maternal vegan diet
by M. G. Shaikh, J. M. Anderson, S. K. Hall, M. A. Jackson

Veganism as a cause of iodine deficient hypothyroidism
by O. Yeliosof and L. A. Silverman

Do plant based diets deprive the brain of an essential nutrient?
by Ana Sandoiu

Suggested move to plant-based diets risks worsening brain health nutrient deficiency
from BMJ

Could we be overlooking a potential choline crisis in the United Kingdom?
by Emma Derbyshire

How a vegan diet could affect your intelligence
by Zaria Gorvett

Vitamins and Minerals – Plants vs Animals
by Kevin Stock

Health effects of vegan diets
by Winston J Craig

Comparing Glutathione in the Plasma of Vegetarian and Omnivore Populations
by Rachel Christine Manley

Vegan diets are adding to malnutrition in wealthy countries
by Chris Elliott, Chen Situ, and Claire McEvoy

What beneficial compounds are primarily found in animal products?
by Kamal Patel

The Brain Needs Animal Fat
by Georgia Ede

The Vegan Brain
by Georgia Ede

Meat, Organs, Bones and Skin
by Christopher Masterjohn

Vegetarianism and Nutrient Deficiencies
by Christopher Masterjohn

Adding milk, meat to diet dramatically improves nutrition for poor in Zambia
from Science Daily

Red meat plays vital role in diets, claims expert in fightback against veganism
by James Tapper

Nutritional Composition of Meat
by Rabia Shabir Ahmad, Ali Imran and Muhammad Bilal Hussain

Meat and meat products as functional food
by Maciej Ostaszewski

Meat: It’s More than Protein
from Paleo Leap

Conjugated Linoleic Acid: the Weight Loss Fat?
from Paleo Leap

Nutritional composition of red meat
by P. G. Williams

How Red Meat Can ‘Beef Up’ Your Nutrition
by David Hu

Endogenous antioxidants in fish
by Margrét Bragadóttir

Astaxanthin Benefits Better than Vitamin C?
by Rachael Link

Astaxanthin: The Most Powerful Antioxidant You’ve Never Heard Of
from XWERKS

Antioxidants Are Bullshit for the Same Reason Eggs Are Healthy
by Sam Westreich

We absolutely need fruits and vegetables to obtain optimal antioxidant status, right?
by Paul Saladino

Hen Egg as an Antioxidant Food Commodity: A Review
Chamila Nimalaratne and Jianping Wu

Eggs’ antioxidant properties may help prevent heart disease and cancer, study suggests
from Science Daily

The Ultimate Superfood? Milk Offers Up a Glass Full of Antioxidants
by Lauren Milligan Newmark

Antioxidant properties of Milk and dairy products: a comprehensive review of the current knowledge
by Imran Taj Khan et al

Antioxidants in cheese may offset blood vessel damage
from Farm and Dairy

Identification of New Peptides from Fermented Milk Showing Antioxidant Properties: Mechanism of Action
by Federica Tonolo

Bioavailability of iron, zinc, and other trace minerals from vegetarian diets
by Janet R Hunt

Dietary iron intake and iron status of German female vegans: results of the German vegan study.
by A. Waldmann, J. W. Koschizke, C. Leitzmann, and A. Hahn

Mechanisms of heme iron absorption: Current questions and controversies
by Adrian R. West and Phillip S. Oates

Association between Haem and Non-Haem Iron Intake and Serum Ferritin in Healthy Young Women
by Isabel Young et al

Pork meat increases iron absorption from a 5-day fully controlled diet when compared to a vegetarian diet with similar vitamin C and phytic acid content.
by M. Bach Kristensen, O. Hels, C. Morberg, J. Marving, S. Bügel, and I. Tetens

Do you need fiber?
by Kevin Stock

7 thoughts on “Plant-Based Nutritional Deficiencies

  1. Oh dear, I do appreciate your detailed approach, but the sources you use are very one-sided. Also, for me, an ethical vegan, the question of nutrients is a little beside the point. The great disadvantage of the carnivore diet is the harm it inflicts on those we eat. So the focus on what diets do to us is secondary. Anecdotally, I’ve been vegan for going on 20 years, and am in fine health. I wish the ethics, which are the heart of the matter, wouldn’t be left out of a seemingly ideologically-neutral debate. I’d be happy to recommend a wealth of scholarly sources on the benefits, nutritionally and ethically, of a strictly plant-based diet.

    • The evidence comes from nutrition studies. There is no particular side to the field of nutrion studies. The nutritional deficiencies among vegetarians and vegans is well supported in the research. It’s hardly new information, although I was attempting to be more thorough about it. Yet nutrition stuidies is notorious for being in the middle of a replication crisis because of the low-quality epidemiological research..

      I’m familiar with the evience offered on the other side of the debate. I’ve been a vegetarian before and I’ve spent my entire adult life surrounded by vegetarians and vegans. Most of the studies showing benefits for plant-based diets have been comparisons against the standard American diet (SAD). That is problematic. As I’ve argued, eating dog shit probably would show improvements in health in contrast to those eating SAD.

      I have explored the views in favor of eating more plant foods: Seven Countries study, China study, Blue Zones, etc. And I’ve written about them, gathering the evidence against them. Here are a few examples:
      https://benjamindavidsteele.wordpress.com/2019/05/28/blue-zones-dietary-myth/
      https://benjamindavidsteele.wordpress.com/2018/08/03/the-creed-of-ancel-keys/
      https://benjamindavidsteele.wordpress.com/2018/10/15/ancient-atherosclerosis/

      My views are fairly nuanced. Let me make an important distintion. I separate vegetarianism from veganism. A vegetarian could eat regular amounts of animal foods such as dairy and eggs. This is why I’d tend to call vegetarianism an animal-based diet, although some vegetarians like one of my brothers is near-vegan.
      https://benjamindavidsteele.wordpress.com/2019/11/20/vegetarianism-is-an-animal-based-diet/

      Then again, my aunt calls herself vegan while eating fish. These terms can be rather loose. Some surveys show that most vegetarians occasionally or regularly cheat by eating meat and fish. How healthy a ‘plant-based’ diet is, I’d argue, depends on the quantity and quality of animal foods also included.
      https://benjamindavidsteele.wordpress.com/2019/12/10/being-mostly-vegan-is-like-being-a-little-pregnant/

      That said, a small minority seem to do moderately well as vegans. But I’d point out two things. This is a very small group. Most people who go on a vegan or vegetarian diet either quit it or maintain it by cheating. Still, there are tiny group that claims to do well as strict vegans. I have my doubts, though. Some nutritional deficiencies are extremely subtle. You wouldn’t necessarily know you;’re lacking adequate nutrition, unless you test for all of the nutrients I listed above which is not common practice for doctors.

      That said, veganism potentially could be done with moderate health, if not optimal health. Along with regular testing, this would require careful use of supplements and fortified foods. But that goes back to the original problem. A genuinely healthy diet wouldn’t require supplements and fortified foods. That is what is avoided by a nose-to-tail animal-based diet from wild-caught and pasture-raised foods. All your essential nutrients and a wide variety of non-essential nutrients can be obtained from animal foods, quite unlike plant foods.

      As for ethical arguments, that is an entirely separate issue. My other brother is also vegetarian and has said he’d rather die than eat meat. Indeed, he has major health issues that are diet-related. It’s a choice he has made. I understand the motivation as I too am a hippy-dippy liberal and tree-hugging environmentalist. But I simply have a different assessment of which diets cause the most death and suffering.
      https://benjamindavidsteele.wordpress.com/2019/06/29/carnivore-is-vegan/

      Everyone has to look at the evidence for themselves, come to their own conclusions, and then base their own decisions upon that. I’m not here to tell anyone what to do nor to judge anyone else for their beliefs and values, ideals and commitments. If you’re committed to veganism for ethical reasons, I’d only suggest that one be extremely aware of the potential health risks and act accordingly.

    • Part of the point of this post is to counter the one-sidedness of conventional views of diet and nutrition. I know the plant-based arguments and evidence. Most people know that side of the debate because it has been endlessly repeated by mainstream health officials and corporate media.

      But few people know the other side of the debate that I present here. Before reading my post, did you know that all essential nutrients are found in animal foods but not plant foods? Why is such a basic fact still unknown to most people? I’m all for public debate and scientific debate. But unfortunately, there has been generations of silencing.

      Gary Taubes discusses this in great detail in his books. Nina Teicholz also covers it in her book. Or for some brief surveys, you could look to some of my previous posts:
      https://benjamindavidsteele.wordpress.com/2019/03/10/eliminating-dietary-dissent/
      https://benjamindavidsteele.wordpress.com/2019/02/12/cold-war-silencing-of-science/

    • If you don’t mind my asking, as a long-term vegan how have you maintained health and avoided nutritional deficiencies? What supplements and fortified foods do you use to ensure you get the nutrients lacking in your diet of only plant foods? Assuming you are a strict vegan who never cheats, you must be watching your nutrient levels very carefully, right?

      Even then, how do you know you haven’t suffered deficiencies? Some deficiencies take many years to show up in symptoms. A wide variety of research shows that vegans and vegetarians have higher rates of mental illness, brain shrinkage,infertility, bone density loss, etc. I don’t say this as an attack. I’m genuinely curious about what you have learned and observed from your 20 years as a vegan. How have you avoided the common ailments of extreme plant-based diets?

      I hope you’ve figured out a formula that works for you. It can be done in theory. But nutritional sufficiency is extremely challenging for a vegan. That is the concern. Not that it’s entirely impossible but very hard. Most other people seem to never figure out how to do veganism in a moderately healthy way, even if they want to for ethical motivations. Some even maintain it for decades before the health consequences catch up with them. Many diseases such as with neruodegeneration can take decades to develop before they become so obvious as to lead to a diagnosis.

      Anyway, I wish you well. From my perspective, veganism is a major personal sacrifice, the willingness to risk your health and life. There are some values I hold that would be worthy of such a sacrifice, but I must admit it would have to be something I consider very significant such as fighting Nazis. And to do sacrifice my brain health would be even more of a sacrifice to my view. I spent so many years probably with depression and maybe brain damage from a high-carb diet. Having found a diet that has made depression go away, along with much else, is a major achievement.

      The fact that mood disorders are so prevalent on veganism and vegetarianism alone would make me nervous about those diets. I take mental health with deadly seriousness. That is another worry of mine. We might be crippling our society with mental illness with the nutritionally deficient diets, from SAD to veganism/vegetarianism, that have become so common. This is one of the most obvious explanations for why we are in the middle of a mental health epidemic. As we face even greater crises like climate change, we are going to need our full neurocognitve potential to meet the challenges.

    • There is a central failure to nutrition studies that goes back to the earliest research in the 1800s. It’s part of the larger scientific paradigm that has dominated modern science. It’s basically about reductionism. In this case, it is reducing nutrients in isolating them. This is called nutritionism. It ignores all of the complexities involved in whole foods, from cofactors to nutrient ratios.
      https://benjamindavidsteele.wordpress.com/2019/09/17/hubris-of-nutritionism/

      This problem is particularly demonstrated in mainstream dietary advice and the standard American diet, but it is likewise seen in veganism and vegetarianism. We put nutrition labels on foods, we fortify foods, and we have a profitable industry of supplements. It’s a belief that we can outsmart nature, that it doesn’t matter that our food is nutritionally deficient. Just throw in some additional nutrients and all will be well.

      This is severely naive. The complexity of how nutrients work together is next to impossible to artificially replicate, no matter how much knowledge one has and how careful one is. This the advantage of animal foods. The biology and nutritional needs of other species is similar to our own. When we eat animal foods, we are getting all the essential nutrients we need in the right ratio combined with all the needed cofactors. That is true of dairy and eggs for vegetarians, two foods that literally offer all the nutrients necessary to build a new living organism.

      To get a sense of the complexity, read the following two posts and realizing there are hundreds of nutritonal pathways and mechanisms that are equally complex.
      https://benjamindavidsteele.wordpress.com/2019/09/23/true-vitamin-a-for-health-and-happiness/
      https://benjamindavidsteele.wordpress.com/2019/05/14/calcium-nutrient-combination-and-ratios/

    • Out of curiosity, what is the exact reason you perceive the linked info as “one-sided”? Some of it is directly referenced conventional nutrition studies. Much of the rest are articles that reference studies and cites the sources. Some of the linked info comes from low-carb, carnivore or animal-centric sites. But a large part, probably most, of it doesn’t even come from any particular viewpoint.

      A number of the articles are actually pointing out potential deficiencies as to give guidelines for how to do veganism and vegetarianism in a healthy manner. There is not a single side being presented and so I’m not sure how it is one-sided. Even many vegans and vegetarians admit that their diets necessitate careful supplementation and fortification. This is not a ocntroversial point, as it has been well established within the field of nutriton studies.

      I can only surmise that you didn’t look at any of the info or else didn’t look too carefully. Since you admired my thoroughness, why not show appreciation by coming to terms with it? If you have other nutrition studies research, I’d gladly discuss it with you. But it won’t be an interesting discussion if it is a one-way exchange.

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