Vitamin and Nutritional Supplements Increase Chronic Disease Morbidity (Incidence) and Mortality (Death)

Vitamin and Nutritional Supplements Increase Chronic Disease Morbidity

The Nutritional Supplement Mentality

When you start eating Paleo, you simply won’t require vitamin or mineral supplements.13 In fact, except for fish oil and vitamin D, if you choose to take antioxidant and/or B vitamins, you will increase your risk of cancer, heart disease and dying from all causes combined.

One of my first jobs after high school was with the U.S. Forest Service on a wild fire crew in Markleville, California. During the summer of 1969 I bunked with eight other fire fighters in a rustic shack where we shared a communal kitchen and bathroom. As an 18-year-old barely out of my parent’s house, I had to buy groceries to last me a week before my days off. Being young and naïve, my food choices were not that good to begin with, but I did manage to purchase a box of Total Cereal, thinking this was a sensible food to help me obtain 100% of my daily vitamins and minerals.

Forty years later, I now realize that my naïve food choice constituted part of a much larger, unwise global perspective on diet that had emerged since World War II. Instead of focusing upon natural, healthy foods in my diet, I was suckered into focusing upon nutrients. Until only recently this perspective has dominated scientific as well as lay thought on healthful elements that made up nutritious diets.24, 30

To quote a recent study by Drs. Lichtenstein and Russell24 from Tufts University which appeared in the prestigious Journal of the American Medical Association, “The most promising data in the area of nutrition and positive health outcomes relate to dietary patterns, not nutrient supplements. These data suggest that other factors in food or the relative presence of some foods and the absence of other foods are more important than the level of individual nutrients consumed.”

If we read just a little between the lines, you can see that one of the key points brought up is that our overall nutritional quality is most dependent upon the foods we don’t eat.24, 30 No amount of vitamins, minerals or supplements added to breakfast cereals will ever make them a healthful food. Similarly, athletic drinks boasting of vitamins, amino acids and additives are nothing more than liquid candy. The food processing industry “fortifies” highly processed foods, like breakfast cereals, soft drinks, designer yogurts, granola, mayonnaise and orange juice with various nutrients and then re-characterizes them as “nutritious” or “heart healthy.” These marketing ploys not only cause widespread adverse health effects, but they also propagate the misleading idea that nutrients (vitamins and minerals) are more important than foods. We need to get back to healthy eating patterns characterized by traditional foods such as fresh fruits, vegetables, seafood and grass produced meats that have nourished and sustained our species from the very beginning.

When we eat real, living foods there is little or no need to supplement our diet with any vitamin, mineral or single nutrient thought to be protective against disease.13 The mentality that has dominated nutritional thought in the post-World War II era since vitamins and supplements became widely available was: if a little bit is good, more must be better.

If you visit your local pharmacy or health food store and decide to buy a mixed B vitamin formula, or even a multivitamin, you are immediately met with a staggering number of choices. Do you want the 10 mg version, the 50 mg form, or the 100 mg variety? You ask the clerk, and she says go with the 100 mg version because you’re getting more vitamins for your buck, and we all know that B vitamins are water soluble; so what you don’t use will simply be excreted in your urine. You agree, and don’t give it a second thought.

Evolutionary Insight

If we follow the evolutionary template, it will provide us guidance about all aspects of healthful human diet, including vitamin and nutritional supplements. For our hunter gatherer ancestors, micronutrients (vitamins, minerals, and phytochemicals) have always been consumed in a range of concentration that was available through diet only. Further, processed foods were not on the menu, nor were vitamin supplements or fortified foods. Accordingly, our ancestral vitamin, mineral and nutrient intake would have always fallen within a narrow range – not too low and not too high. Additionally, the relative levels of one B vitamin to another or any single nutrient to another1, 20, 21, 36, 38 would have also fallen within a range determined by the types of unprocessed plant and animal foods that were consumed. I can tell you right now that it would have been impossible for any hunter gatherer to ever obtain 10 times the DRI for any B vitamin, much less 100 times this value. Similarly, the natural ratio of one B vitamin to the next or any nutrient to another would never have been exactly one to one as it is in most modern vitamin formulations.

OK. What am I getting at? Paracelsus, one of the greatest Renaissance physicians of 16th century Europe is credited with this quote, “dose makes the poison.” And indeed, this ancient wisdom is now coming back to haunt us in the 21st century as we indiscriminately lace our food supply with artificially produced vitamins, minerals and supplements that we perceive to enhance our health and prevent disease. Below is a graph known as a “U” shaped curve that depicts how numerous isolated vitamin and mineral supplements affect health and well-being.9, 16 Notice that when nutrient intake is low it increases our risk for disease, but this really isn’t news to most of us. What may surprise you is that excessive intake of many so called, “safe” vitamins and minerals have increasingly been shown to be harmful and actually cause illness.

Supplementation U-Shaped Curve | The Paleo DietOur hunter gatherer ancestors rarely or never would have ingested too few or too many nutrients that caused disease by landing on either the left or right hand extremes of the “U” shaped curve. Prior to the Agricultural Revolution, it would have been difficult or nearly impossible for any forager to develop a vitamin or nutrient deficiency by falling on the left hand side of the curve. Wild plant and animal foods are rich sources of all known nutrients required for optimal human health. When these foods or their modern counterparts are regularly consumed, nutrient deficiencies never develop. Only in the post-agricultural period could people have wound up on the left side of the “U” shaped curve. Vitamin and mineral deficiencies became commonplace in early farmers as nutrient poor cereal grains replaced wild meats, fish, fruits and vegetables. With the industrial revolution and introduction of refined grains, sugars, vegetable oils, canned foods and eventually processed and junk food, the consumption of nutrient depleted foods became the norm. It’s high time that we return to the foods to which our species is genetically adapted – by doing so you will never have to worry about landing on the left side of the “U” shaped curve.

Nutritional Supplements: Too Much of a Good Thing

Perhaps more alarming to many of you is not the left side of the curve, but rather its right side. I realize that many of you may be taking high doses of B and antioxidant vitamins because you think they provide protection from cancer and heart disease. Nothing could be further from the truth, and in fact this practice will increase your risk of dying from cancer, heart disease and all causes combined. Except for fish oil and vitamin D, supplementation is a total waste of your time and money. It’s high time to dismantle the myth of nutrient supplementation as our guiding light to health and well-being and replace it with the truth of nutrient dense, “real” foods.24, 30

Folic Acid Supplementation and Fortification

I have previously written an extensive blog post on folic acid supplementation. Starting in 1998 the U.S. Food and Drug Administration mandated that all enriched wheat flour was to be fortified with folic acid. Because most commercial wheat products (breakfast cereals, bread, cookies, cakes, crackers, doughnuts, pizza crust, hamburger and hotdog buns, wheat tortillas etc.) are made with enriched wheat flour, essentially the entire U.S. population began to consume folic acid in 1998. As I and others have pointed out this practice produced marginal reductions in neural tube defects, but moreover increased the risk for breast, prostate and colorectal cancers for the entire U.S. population.

Antioxidant Supplements do More Harm than Good

Of all the supplements people take, antioxidants are one of the most popular, particularly with seniors and cancer patients. The most commonly supplemented antioxidants are beta carotene, vitamin A, vitamin C, vitamin E and selenium. About 11% of the U.S. population supplement their diets with antioxidants on a daily basis, whereas this number rises to almost 20% in adults 55 years of age and older.27 A near universal perception with most antioxidant consumers is that these nutrients increase longevity and may prevent cancer, heart disease and whatever else ails them.34, 35 It goes without saying – more is almost always thought to be better.

Let’s examine the “U” shaped curve once again. If people are deficient in these nutrients, there is little doubt that health will suffer. On the other hand more is definitely not better. Biological systems, like our bodies operate optimally when nutrients are supplied to them in the ranges for which they were designed. If you underinflate a tire, your car performs poorly – if you overinflate it, the tire ruptures. Just like tires, our body’s natural defense against disease as well as the rate it ages is dependent upon just the right amount of antioxidants from our diet – not too little, but also not too much. I invoke the “U” shape curve and Paracelsus once again, “dose makes the poison.

The idea behind antioxidant supplements is that they capture and inactivate free radicals. These are highly reactive particles formed within our tissues as byproducts of metabolism. Excessive free radicals may damage cells and tissues in many ways. In animal experiments, high free radical production can promote cancer, heart disease and premature aging. Our bodies use dietary antioxidants to disarm free radicals and thereby prevent damage to cells. We also manufacture antioxidants within our bodies which work together with dietary antioxidants to keep free radicals at bay.

An often overlooked fact when it comes to free radicals is that they are necessary components of normal body function and a healthy immune system. Free radicals are used by the immune system to destroy cancer cells, kill invading microorganisms and detoxify cells. If we overload our bodies with massive doses of antioxidants, these essential functions are impaired as normal free radical activity is suppressed. Alternatively, supra normal doses of antioxidant vitamins upset other delicate aspects of cellular machinery which can actually turn antioxidants into pro-oxidants and ultimately increase free radical activity.

In 1994 one of the first inklings that high doses of antioxidants may be harmful surfaced with the completion of the ATBC study, a randomized, placebo controlled experiment of 29,133 male smokers.2 The idea behind this experiment was to determine if beta carotene or vitamin E supplementation could reduce lung cancer incidence in this group of heavy smokers. Following 5 – 8 years of supplementation, the researchers were shocked – treatment with beta carotene actually increased lung cancer rates by 16 –18% and overall death rates by 8%. Further, the men taking vitamin E suffered more hemorrhagic stroke than those taking placebo pills.2 A similar randomized placebo controlled trial known as the CARET study had been on-going concurrently with the ATBC study. In the CARET trial smokers and former smokers received beta carotene (20 mg) in combination with high doses of vitamin A (25,000 I.U.) for an average of five years.31 The men who received the antioxidants experienced a 28 % greater incidence in lung cancer and a 17% higher death rate than those taking an inert placebo pill. The CARET trial was immediately stopped when the results of the ATBC trial were reported.

In the years since the ATBC and CARET trials, more convincing data have verified the harmful effects of antioxidant supplementation. A 2007 meta analysis of 67 randomized controlled trials studies involving 232,606 participants showed that supplementation with either vitamin E, beta carotene, or vitamin A increased overall death rates.5 In 2008, a large randomized controlled trial (The SELECT study) of vitamin E and selenium supplementation in 35,533 men was prematurely halted when it was discovered that these two antioxidants increased the risk for prostate cancer and type 2 diabetes.23 A large m eta analysis involving 20 randomized controlled trials and 211,818 subjects revealed antioxidant supplementation (beta carotene, vitamin A, vitamin C, vitamin E and selenium) did not protect against gastrointestinal cancer, but rather increased overall death rates.3

A series of recent meta analyses (combined results from many studies) show that high vitamin E intake may be particularly dangerous. Dr. Miller and colleagues at Johns Hopkins School of Medicine analyzed 19 randomized trials that included more than 136,000 subjects and stated, “High-dosage (> or =400 IU/d) vitamin E supplements may increase all-cause mortality and should be avoided.” 28  In a meta analysis of 118,765 people and 9 randomized controlled trials evaluating the effects of vitamin E on stroke, Dr. Schurks and co-workers at Harvard Medical School concluded, “In this meta analysis, vitamin E increased the risk for haemorrhagic stroke by 22% . . . indiscriminate widespread use of vitamin E should be cautioned against.”37

Even the once acclaimed and vaunted vitamin C may have little therapeutic value for cancer or heart disease. In The Physicians’ Health Study, a randomized, placebo-controlled trial of vitamins E and C in 14,641 male doctors, the authors summarized, “. . . neither vitamin E nor C supplementation reduced the risk of prostate or total cancer. These data provide no support for the use of these supplements for the prevention of cancer in middle-aged and older men.”14 The situation for cardiovascular and vitamin C and other antioxidants appears to be the same as for cancer – they are a waste of your money as Dr. Bleys and colleagues have demonstrated in a meta analysis of 11 randomized controlled trials. His concluding remarks were as follows: “Our meta-analysis showed no evidence of a protective effect of antioxidant vitamin-mineral or B vitamin supplementation on the progression of atherosclerosis. . . Our findings add to recent skepticism about the presumed beneficial effects of vitamin-mineral supplementation on clinical cardiovascular endpoints.7

Here’s one final point regarding vitamin C supplementation that may be of interest. If you are an athlete a series of recent human and animal experiments suggest that mega doses of vitamin C may have detrimental effects upon your performance.12, 15, 33 Surprisingly, supplementation with vitamin C may decrease training efficiency, cancel beneficial effects of exercise on insulin sensitivity, and delay healing after exercise. In addition, vitamin C supplementation did not decrease free radical damage to DNA that may occur following exercise18

These kinds of studies further cement the notion that fitness, vitality and well-being can never be achieved by single isolated nutrients, supplements or fortified foods. In fact, the available evidence conclusively shows these compounds are harmful by causing nutritional imbalances within our bodies.4, 6 The Paleo Diet has never been about supplements, but rather about real, wholesome living foods.

A closing thought. Supplementation can also be hazardous to our children’s health as well. A number of studies have demonstrated that multivitamin supplementation29 increases the risk for food allergies and asthma as do supplements of vitamin A, D, E and C.17, 22


Loren Cordain, Ph.D., Professor Emeritus


1. Alcock N, Macintyre I. Inter-relation of calcium and magnesium absorption. Clin Sci. 1962 Apr;22:185-93.

2. ATBC Cancer Prevention Study Group. The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers. The Alpha-Tocopherol, Beta Carotene Cancer Prevention Study Group. N Engl J Med. 1994 Apr 14;330(15):1029-35.

3. Bjelakovic G, Nikolova D, Simonetti RG, Gluud C. Systematic review: primary and secondary prevention of gastrointestinal cancers with antioxidant supplements. Aliment Pharmacol Ther. 2008 Sep 15;28(6):689-703

4. Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. Cochrane Database Syst Rev. 2008 Apr 16;(2):CD007176.

5. Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis. JAMA. 2007 Feb 28;297(8):842-57. Review. Erratum in: JAMA. 2008 Feb 20;299(7):765-6

6. Bjelakovic G, Gluud C. Surviving antioxidant supplements. J Natl Cancer Inst. 2007 May 16;99(10):742-3

7. Bleys J, Miller ER 3rd, Pastor-Barriuso R, Appel LJ, Guallar E Vitamin-mineral supplementation and the progression of atherosclerosis: a meta-analysis of randomized controlled trials. Am J Clin Nutr. 2006 Oct;84(4):880-7

8. Bolland MJ, Avenell A, Baron JA, Grey A, MacLennan GS, Gamble GD, Reid IR. Effect of calcium supplements on risk of myocardial infarction and cardiovascular events: meta-analysis. BMJ. 2010 Jul 29;341:c3691. doi: 10.1136/bmj.c3691

9. Chiang EC, Shen S, Kengeri SS, Xu H, Combs GF, Morris JS, Bostwick DG, Waters DJ.Defining the Optimal Selenium Dose for Prostate Cancer Risk Reduction: Insights from the U-Shaped Relationship between Selenium Status, DNA Damage, and Apoptosis. Dose Response. 2009 Dec 21;8(3):285-300

10. Cho E, Hunter DJ, Spiegelman D, Albanes D, Beeson WL, van den Brandt PA, Colditz GA et al. Intakes of vitamins A, C and E and folate and multivitamins and lung cancer: a pooled analysis of 8 prospective studies. Int J Cancer. 2006 Feb 15;118(4):970-8.

11. Clarke R, Halsey J, Lewington S, Lonn E, Armitage J, Manson JE, et al. Effects of lowering homocysteine levels with B vitamins on cardiovascular disease, cancer, and cause-specific mortality: Meta-analysis of 8 randomized trials involving 37 485 individuals.Arch Intern Med. 2010 Oct 11;170(18):1622-31.

12. Close, G. L., Ashton, T., Cable, T., Doran, D., Holloway, C., McArdle, F., et al. (2006). Ascorbic acid supplementation does not attenuate post-exercise muscle soreness following muscle-damaging exercise but may delay the recovery process. Brit J Nutr 2006; 95:976-981.

13. Cordain L. The nutritional characteristics of a contemporary diet based upon Paleolithic food groups. J Am Neutraceut Assoc 2002; 5:15-24.

14. Gaziano JM, Glynn RJ, Christen WG, Kurth T, Belanger C, MacFadyen J, Bubes V, Manson JE, Sesso HD, Buring JE. Vitamins E and C in the prevention of prostate and total cancer in men: the Physicians’ Health Study II randomized controlled trial. JAMA. 2009 Jan 7;301(1):52-62. Epub 2008 Dec 9.

15. Gomez-Cabrera, M.-C., Domenech, E., Romagnoli, M., Arduini, A., Borras, C., Pallardo, F. V., et al. Oral administration of vitamin C decreases muscle mitochondrial biogenesis and hampers training-induced adaptations in endurance performance. Am J Clin Nutr 2008; 87(1), 142-149.

16. Gore F, Fawell J, Bartram J. Too much or too little? A review of the conundrum of selenium. J Water Health. 2010 Sep;8(3):405-16.

17. Greenough A, Shaheen SO, Shennan A, Seed PT, Poston L. Respiratory outcomes in early childhood following antenatal vitamin C and E supplementation. Thorax. 2010 Nov;65(11):998-1003.

18. Herbert, K., Fletcher, S., Chauhan, D., Ladapo, A., Nirwan, J., Munson, S., et al. (2006). Dietary supplementation with different vitamin C doses: no effect on oxidative DNA damage in healthy people. Eur J Nutr 2006;45(2): 97-104.

19. Herbert V. Staging vitamin B-12 (cobalamin) status in vegetarians. Am J Clin Nutr. 1994 May;59(5 Suppl):1213S-1222S

20. Johnson FO, Gilbreath ET, Ogden L, Graham TC, Gorham S. Reproductive and developmental toxicities of zinc supplemented rats. Reprod Toxicol. 2011 Feb;31(2):134-43.

21. Khan AT, Graham TC, Ogden L, Ali S, Salwa, Thompson SJ, Shireen KF, Mahboob M. A two-generational reproductive toxicity study of zinc in rats. J Environ Sci Health B. 2007 May;42(4):403-15

22. Kull I, Bergström A, Melén E, Lilja G, van Hage M, Pershagen G, Wickman M. Early-life supplementation of vitamins A and D, in water-soluble form or in peanut oil, and allergic diseases during childhood. J Allergy Clin Immunol. 2006 Dec;118(6):1299-304

23. Ledesma MC, Jung-Hynes B, Schmit TL, Kumar R, Mukhtar H, Ahmad N. Selenium and vitamin E for prostate cancer: post-SELECT (Selenium and Vitamin E Cancer Prevention Trial) status. Mol Med. 2011 Jan-Feb;17(1-2):134-43.

24. Lichtenstein AH, Russell RM. Essential nutrients: food or supplements? Where should the emphasis be? JAMA. 2005 Jul 20;294(3):351-8

25. Lin J, Lee IM, Cook NR, Selhub J, Manson JE, Buring JE, Zhang SM. Plasma folate, vitamin B-6, vitamin B-12, and risk of breast cancer in women. Am J Clin Nutr. 2008 Mar;87(3):734-43.

26. McCance DR, Holmes VA, Maresh MJ, Patterson CC, Walker JD, Pearson DW, Young IS; Diabetes and Pre-eclampsia Intervention Trial (DAPIT) Study Group. Vitamins C and E for prevention of pre-eclampsia in women with type 1 diabetes (DAPIT): a randomised placebo-controlled trial. Lancet. 2010 Jul 24;376(9737):259-66.

27. Millen, A. E., Dodd, K. W., & Subar, A. F. Use of vitamin, mineral, nonvitamin, and nonmineral supplements in the United States: the 1987, 1992, and 2000 National Health Interview Survey results. J Am Diet Assoc 2004;104:942-950.

28. Miller ER 3rd, Pastor-Barriuso R, Dalal D, Riemersma RA, Appel LJ, Guallar E. Meta-analysis: high-dosage vitamin E supplementation may increase all-cause mortality. Ann Intern Med. 2005 Jan 4;142(1):37-46

29. Milner JD, Stein DM, McCarter R, Moon RY. Early infant multivitamin supplementation is associated with increased risk for food allergy and asthma. Pediatrics. 2004 Jul;114(1):27-32.

30. Mozaffarian D, Ludwig DS. Dietary guidelines in the 21st century–a time for food. JAMA. 2010 Aug 11;304(6):681-2

31. Omenn GS, Goodman GE, Thornquist MD, Balmes J, Cullen MR, Glass A, Keogh JP, Meyskens FL, Valanis B, Williams JH, Barnhart S, Hammar S. Effects of a combination of beta carotene and vitamin A on lung cancer and cardiovascular disease. N Engl J Med. 1996 May 2;334(18):1150-5

32. Refsum H, Smith AD. Are we ready for mandatory fortification with vitamin B-12? Am J Clin Nutr. 2008 Aug;88(2):253-4.

33. Ristow, M., Zarse, K., Oberbach, A., KlÃting, N., Birringer, M., Kiehntopf, M., et al. Antioxidants prevent health-promoting effects of physical exercise in humans. Proc Natl Acad Sci 2009; 106(21): 8665-8670.

34. Rosenberg IH. Science-based micronutrient fortification: which nutrients, how much, and how to know? Am J Clin Nutr. 2005 Aug;82(2):279-80

35. Soni MG, Thurmond TS, Miller ER 3rd, Spriggs T, Bendich A, Omaye ST. Safety of vitamins and minerals: controversies and perspective. Toxicol Sci. 2010 Dec;118(2):348-55.

36. Seelig MS. Increased need for magnesium with the use of combined oestrogen and calcium for osteoporosis treatment. Magnes Res. 1990 Sep;3(3):197-215.

37. Schürks M, Glynn RJ, Rist PM, Tzourio C, Kurth T. Effects of vitamin E on stroke subtypes: meta-analysis of randomised controlled trials. BMJ. 2010 Nov 4;341:c5702. doi: 10.1136/bmj.c5702

38. Walter PB, Knutson MD, Paler-Martinez A, Lee S, Xu Y, Viteri FE, Ames BN. Iron deficiency and iron excess damage mitochondria and mitochondrial DNA in rats. Proc Natl Acad Sci U S A. 2002 Feb 19;99(4):2264-9.

39. Wu J, Lyons GH, Graham RD, Fenech MF. The effect of selenium, as selenomethionine, on genome stability and cytotoxicity in human lymphocytes measured using the cytokinesis-block micronucleus cytome assay. Mutagenesis. 2009 May;24(3):225-32

About Loren Cordain, PhD, Professor Emeritus

Loren Cordain, PhD, Professor EmeritusDr. Loren Cordain is Professor Emeritus of the Department of Health and Exercise Science at Colorado State University in Fort Collins, Colorado. His research emphasis over the past 20 years has focused upon the evolutionary and anthropological basis for diet, health and well being in modern humans. Dr. Cordain’s scientific publications have examined the nutritional characteristics of worldwide hunter-gatherer diets as well as the nutrient composition of wild plant and animal foods consumed by foraging humans. He is the world’s leading expert on Paleolithic diets and has lectured extensively on the Paleolithic nutrition worldwide. Dr. Cordain is the author of six popular bestselling books including The Real Paleo Diet Cookbook, The Paleo Diet, The Paleo Answer, and The Paleo Diet Cookbook, summarizing his research findings.

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“31” Comments

  1. Good post. I learn something totally new and challenging on blogs I stumbleupon everyday. It’s always interesting to read through articles from other writers and practice something from their sites.

  2. Loren Cordain is fat and doesn’t look very healthy. I think his diet advice isn’t so smart to follow. Paleo is a lot like the Atkins diet. And guess what? Dr. Atkins was fat. You want to know some good doctors you should look up for good nutritional advice? Dr. Michael Gregor and Dr. Neal Bernard. They aren’t fat and nutrient dificient.

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  16. The facts are that; IF we lived in a perfect world and ate a perfect variety of foods we would need little supplements (depending on Genetics). Therefore, given the world and diets we now live with, supplements in moderation are a necessity for optimal health and wellness.

    BTW GlycoPhosphate, according to all valid scientifically supported studies DOES NOT chelate with minerals in the soil, it readily breaks down into an amino acid called Glycine and a group of plant fertilizers called phosphates, both of which are beneficial to the soil Microbiome and the plants that benefit from it. The use of GlycoPhosphate allows a synergistic model of farming called “No Till” that greatly benefits the health of the soil, increased food production and reduces the overall carbon footprint of farming in general. It is a very sad fact that the only way the corporate organic foods lobby feels that they can increase their market share is by deceptively lying about Glycophosphate and biotechnology in general

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  44. I disagree whole heartedly. I am not an expert, but I do know that many naturopathic doctors have given their patients supplements and intervaneous vitamin C injections to help beat thier cancer.

    I know vitamin C works, even the generic brands. As soon as I stopped taking it, I got sick. Before that, I was never sick for many years. Just a headache once and a while. I feel the difference with supplements.

    I now take organic non GMO supplements, because I know the soil is depleted of nutrients and minerals and also the unwanted ingredients. Even a raw whole foods diet may not be sufficient for everyone.

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  46. Walter Willet, perhaps the most published researcher on pubMed, a well as Bruce Ames have found in their research, including publications from the past 12 months, that vitamin and mineral supplementation is necessary. A lot of the research suggests high doses over long periods of time is harmful, however, there are more high quality peer reviewed articles showing positive correlations with supplementation, especially for neurological function. – check your supplements for copper content. You shouldn’t exceed 100 micrograms per day if copper, but many Americans are getting many many Times that amount daily. Another reason to avoid tap water

  47. I have two questions: 1) Having had 3 heart attacks and being on the full suite of heart meds, my doctor has me on Coenzyme Q10. I really notice a significant drop in energy when I run out. Surely I need this supplement given that heart meds aggressively deplete it?

    Isn’t it true to say that zinc is depleted in over 50’s?

  48. This article contradicts everything that I’ve learned over the past 15 years about nutrition just so convenient that a PhD wrote this who has an Interest in pharmaceutical about posting an article Of negative and deadly effects of prescription drugs that people are dying from on a daily basis seems like someone from the FDA wrote this

  49. I enjoy this site and feel like I’ve learned a lot from it. This seemed like an unusually vague article for Dr. Cordain. Did he actually write it, or is he just presenting / signing off on a paper presented by a student? There are discernable differences between synthetic supplements and whole food supplements, isolated compounds and vitamins with cofactors. My first question for this author is whether the writer made any note of differences of what type of supplements were used in the referenced research: whole food or isolated food-derived compounds, or synthetic vitamins using molecules meant to “imitate” the real vitamins in food laden with unneccessary additives and petroleum based colorings? It’s my general understanding the body reacts differently to them, just like a body reacts differently to natural estrogen vs estrogen mimicicking substances. I would hazard a guess that organic vitamins would even behave differently than vitamins made from GMO derived corn and soy.
    I’d also be interested in knowing the source of the studied groups – whether they were healthy or unhealthy to begin with and what people were excluded from the studies referenced.
    Also, one would need to look closely at what was used for placebos in the various reference. People often assume it would be something as inert as possible, but that is a big and unsupported assumption.

    Too many unanswered questions for this article to be helpful. I hope Dr. Cordain takes the time to clarify some of these questions – the use of vitamins is as complex as food, and demands as much if not more attention to detail based on an individual’s epigenetic profile. Epigenetics shows clearly that some vitamins can make some health issues worse, but that doesn’t mean people shouldn’t take vitamins. That means people and practitioners should make more effort to take appropriate vitamins based on one’s individual circumstances.

    • Thank you, Jennifer. I agree this article leaves out too much information for it to garner useful attention. These conclusions have been suggested before: increased quantities of even top quality, well-rounded supplements are not better. And, neither do smokers supplementing with synthetic supplements fare better, nor does supplementing with single antioxidants fare better as the antioxidants work synergistically.

      I am disappointed with your glaring lack of completeness in covering this subject, Dr. Cordain.

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  51. None of this “expert” research takes into account people with genetic polymorphisms that makes it difficult to absorb nutrients from any source. For example there is a B12 polymorphism where you do not produce the intrinsic factor to absorb the nutrient efficiently. The only way to absorb enough is to MEGADOSE SUPPS and force passive diffusion. These genetic issues are pretty common. This research is surprisingly one sided and full of questionable studies.

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  53. I started taking Co-enzyme Q-10 when I was taking Lipitor. Since stopped Lipitor but continue to use coQ10 for heart muscle health,etc. I am a veterinarian and anecdotally see sig. benefits in my K-9 heart patients. Comments? Also, its seems counterintuitive that healthy foods with antioxidants would cause problems. Are antioxidant supplements the only potential problem.. I can’t imagine eating too many blueberries would be dangerous!

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  55. As Dr. Foley mentioned above, sometimes we might need a little something extra. I still believe that this little something extra should come from a food source. I recommend juicing to my patients as a way of supplementing to their diet. Juicing organic veggies is a fantastic way to add nutrients on top of eating a nutritious paleo diet.

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  58. I do not take Vitamin A but I do take large doses of Omega 3’s. 2400mg a day. This is to hopefully to slow down inflammation associated with the early stages of arthritis that is evident in my feet and fingers.
    I wonder of large doses of Omege3 is OK.

  59. I, too, would like to hear Dr. Cordain address the poor nutrient levels of our foods. Also, what about differences in the quality of vitamins produced by one company versus another.

  60. Loren — you know going back to conferences we shared that I am a devoted fan and follower. But I must say that a portion of your article above is flawed and conflicted. It is late, and I will post a more scholarly response in the coming days. But many of your references were done in cohorts who themselves were all consuming very non paleocentric diets. The notion that a bad diet is not remedied by supplements is a good one. But the leap that all supplements outside of D and EFAs is most definitely not.

    In the modern functional medical practice — and I have been at it for going on 30 years — our ability to tease out specific needs has never been better. Jones might get by with 200 mcg of folates in dense foods daily while Smith here might indeed need 2000 mcg of MTHF in order to reduce dangerously slow Kms in a number of critical methylation or detoxification pathways — many of which we can now measure.

    Additionally, you did leave out probiotics and a number of minerals that might be missing depending on the agricultural region and grocery distribution in which one lives (locally grown or not).

    Ever since Larry Clarke opened up the Pandora’s Box with the selenium trials in prostate cancer, we have had conflicted results. One of the reasons is that single independent variables (like adding selenium) simply cannot be assessed accurately due to all the other influencing factors that cannot be teased out with cohort numbers in the hundreds (sometimes in the thousands). We do know that the virulence of any number of different viruses grows significantly in selenium and vitamin D deficient individuals. But some people have variable expression of vitamin D receptor and vitamin D binding proteins and might need more or less than the standard dose or level. Others may have variable gene expression of glutathione peroxidase and might suffer lower levels of selenium as a cofactor than others. So, one person’s supplement might be the next persons needless expense. The key is that we can — with some effort and science — discover who does and who does not need certain supplementation or amplification. Blanket statements are rather algorithmic and are so very 20th century now.

    So, references of studies that among other things cite associations with no control whatsoever of supplement quality (and often quantity), timing and adherence (the recent “Case Against Vitamins in the Annals of Internal Medicine December 2013, required that subject had to take the vitamins less than 50% of the days of the study period — try THAT in a drug trial!), and actual endpoints (what diseases were measured) are really problematic and prove little.

    On the other hand, we could cite just the work of Bruce Ames alone and go on all day about the science behind the benefits. Let me know if that is necessary or if you would prefer a scholarly response that you can post. In any case although I continue to promote paleocentric, organic, gluten free, intermittently abstaining diets, our homo erectus ancestors did not have to deal with fluorescent lights, pollution, freeways, pesticides, or Rachel Maddow. Sometimes we might need a little extra something.


    Chris F

  61. Dr. Cordain, I have a lot of respect for your work. I agree that it’s possible to go overboard on vitamins and that certain things *need* to be oxidized. However, I disagree that nobody eating a paleo diet needs supplements. Even though I eat mostly paleo (no grains, little dairy) and take no medications, I require an iron supplement due to iron deficiency anemia. I also need zinc and magnesium–this, despite eating red meat at least daily and drinking mineral water. Further, some medicines deplete minerals and some places (like goiter belts) are deficient in minerals.

    • Lori,

      Iron deficiency may rather be a B deficiency than an actual iron issue, even with eating red meats. Often, the iron level is ok, it is the body’s inability to use the iron it has that creates the low energy / anemia etc. There are other iron tests that will give you a more complete picture. Check out some thyroid books. Or, have your alternative physician check you on this.

  62. I agree with Maureen. Animals in the wild get sick, too, even though they are completely natural and paleo. I used to believe that as long as I was eating natural and caveman style I’d be completely healthy but that is not the case. There just isn’t enough minerals in the food, and minerals do not occur in the soil evenly spread out but occur in veins. For example, some areas have adequate amounts of Selenium in the soil, some areas have none. You obviously are not aware of Dr. Joel Wallach’s independent research funded by the US government which he made into a book, “Diseases of Exotic Animals.” As far as I’m concerned Dr. Wallach (“Dead Doctors Don’t Lie”) is the best nutritionist in the world.

    When it comes to good food vs. supplements it’s not either/or, it’s both/and. You need BOTH good food and good forms of supplements in adequate amounts that are absorbable and bio-available. The supplements added to breakfast cereals (metallic shavings of iron?!) are hardly an example, and of course they harm the body.

    Please try testing Dr. Wallach’s supplements and protocols, the word needs to spread. He just recently, in LA, reversed the diabetes of over 400 Hispanic members of the community in a matter of 2-4 months as diabetes is a mineral deficiency disease (chromium, vanadium, etc). His protocols need to be tested and Big Pharma will not do it. Will you?

  63. I always really enjoy your posts and learn so much from you. You had mentioned that the only supplements we should take are Vit D and fish oil. I have two questions for you. The first question is regarding Probiotics as they weren’t mentioned. Would you suggest that we supplement our diets with probiotics? The second question is whether or not you have a suggestion for how much Vit D and the type that should be consumed. I look forward to your answers.

  64. I agree with Maureen…what were the quality of the supplements used…what excipients did they contain? I also agree that we should be getting our nutrients from nutrient dense foods however a good deal of our population has deteriorated to the point that their digestion is no longer working and they have multiple deficiencies. With the vast majority of our soil still undergoing replenishment …there is a place for supplemental support.

  65. Your theories are only partially accurate. Just like food, not all supplements are equal. In fact, I’ve seen countless amounts of people reverse chronic diseases by taking quality vitamins and eating a cleaner diet. Be aware of the info you peddle because it can misguide those who actually need to supplement their diet since food quality is no where near the same as it was when our ancestors were alive.

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