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With no governmental support, no reality show, no acceptance amongst most departments of Nutritional ”Science” the Paleo concept is exploding.


“with no governmental support, no reality show, no acceptance amongst most departments of Nutritional ”Science” the Paleo concept is exploding.” – Robb Wolf

The Paleo or Primal lifestyle gets a bad rap. From thinking we roll around in loin clothes, chasing game to gnawing on raw bones.

The Paleo diet has gone so far as to think of changing the name for better marketing, or better recognition. Although I would have no problem with gnawing on a bone or killing my own food, let alone a loin cloth. I do, however get the eyebrow raise, the leering looks, the “oohhh, that diet” talk. And I of course get the typical CW* rebuttal’s, from CV Disease to diabetes to Skin cancer and Plaque in my arteries.

I have no problem with these looks or rebuttal’s, the problem I have is that the same individual’s that want to tell me what is wrong with me or my lifestyle, They don’t want to hear the truth or the research studies showing the veracity of this way of life. They can’t except that man has lived for millions of years in this similar way. Man, as we all know has only been walking around for 10,000 years. Coincidentally, these are the same people that are overweight, lethargic and under nourished.

Recently there has been a lot of stock taken in diets. In fact there have been a lot of mentions for the primal way, or caveman diet. (It’s not even New Years yet?) There has been a lot more focus on the way of life as it relates to fitness than towards the diet. Whether its Natural Movement or MOVNAT, there is a fresh look to the how we exercise and why we exercise. (I would say its closer to the way we move than exercise) A view of separating from the gym membership and elliptical machine, the dreadmill.

Our diet though, gets a little less focus. More of a glancing blow to the head. Why? Because we have been blinded and brainwash for so long, that we accept CW and its faultlessness. The fact that everything under the “Pyramid” has been GMO’d, over commercialized and over processed is criminal. When was the last time you saw a Super Bowl AD for Grass Fed meat from your local butcher, or for your local produce vendor, CSA. Our brains are wired on CW, Money and greed. Cheaper, faster, less nutritious fair. A smorgasbord of growth hormones and genetically modified grains. The addition of proteins to milk cows to increase performance and speed with which they produce is untested and unhealthy. Chemicals being added to our crops, water supply and food supply have created an epidemic of food allergies never before seen. All coinciding in the late 90’s, when our beloved law makers decided it was “OK”. There is a reason why most of the civilized world (read: NON-US) cannot and will not accept hormones or chemicals in their food because it’s unhealthy and untested on humans. The only reason the US will do it, because it’s healthy to the bottom line.

Now we have a new study from US News. Telling us what is the best diet. Well for starters I would never trust a US news agency to EVER give me the real news let alone tell me what is best for me. What is to follow is a post on the blog of Robb Wolf. I, like Robb, will suggest you tweet, Facebook, “like” or just scream at anyone near you the truth. Better yet, copy this article to them and let them in on the secret!

Read and spread the following;

So…I’ve received a ton of emails, FB pings and twitter inquiries about the recent US News piece that ranked Paleo dead last in a list that included SlimFast, MediFast and Weight Watchers as contenders in this Diet Battle Royale. The whole thing is as sad as it is funny, but the most important feature to all of this is the “experts” consulted for this piece did not address the science.

At all.

I’m still working on the Kidney piece, but Prof. Cordain has put together a great response. More are in the works and we are working to have an opportunity for an official rebuttal or debate with the “experts” on that piece. The “why” behind this piece is pretty obvious: with no governmental support, no reality show, no acceptance amongst most departments of Nutritional”Science” the Paleo concept is exploding.

Please copy Prof. Cordain’s response to your blog, tweet it and Facebook it.

Hi Doc,

I’m not sure if you’ve seen this or not, but US News ranked Paleo last of 20 diets claiming a lack of scientific evidence and no-long term weight maintenance guidelines. I’m not sure if you’d be interested in defending it or not, but if you’d be willing to provide specific refutations of their claims, I’d like to write a response piece for the Colorado State University Collegian to run next Wednesday, my deadline is Saturday.



June 8, 2011

Hi Seth,

Good to hear from you and many thanks for your continued support of the Paleo Diet. I hadn’t seen this piece, but I appreciate that you have brought it to my attention. It is obvious that whoever wrote this piece did not do their homework and has not read the peer review scientific papers which have examined contemporary diets based upon the Paleolithic food groups which shaped the genomes of our ancestors. Accordingly the writer’s conclusions are erroneous and misleading. I feel strongly that it is necessary to point out these errors and make this information known to a much wider audience than those reached by the readers of the U.S. News and World Report. You have my permission to syndicate my response and or your write up for the CSU Collegian to any of the major news services including AP and UPI. Additionally, I will copy a number of colleagues and scientists worldwide with this message to ensure that it will be widely circulated on the web, blogs and chat groups.

The writer of this article suggests that the Paleo Diet has only been scientifically tested in “one tiny study”. This quote is incorrect as five studies (1-7); four since 2007, have experimentally tested contemporary versions of ancestral human diets and have found them to be superior to Mediterranean diets, diabetic diets and typical western diets in regards to weight loss, cardiovascular disease risk factors and risk factors for type 2 diabetes.

The first study to experimentally test diets devoid of grains, dairy and processed foods was performed by Dr. Kerin O’Dea at the University of Melbourne and published in the Journal, Diabetes in 1984 (6). In this study Dr. O’Dea gathered together 10 middle aged Australian Aborigines who had been born in the “Outback”. They had lived their early days primarily as hunter gatherers until they had no choice but to finally settle into a rural community with access to western goods. Predictably, all ten subjects eventually became overweight and developed type 2 diabetes as they adopted western sedentary lifestyles in the community of Mowwanjum in the northern Kimberley region of Western Australia. However, inherent in their upbringing was the knowledge to live and survive in this seemingly desolate land without any of the trappings of the modern world.

Dr. O’Dea requested these 10 middle aged subjects to revert to their former lives as hunter gatherers for a seven week period. All agreed and traveled back into the isolated land from which they originated. Their daily sustenance came only from native foods that could be foraged, hunted or gathered. Instead of white bread, corn, sugar, powdered milk and canned foods, they began to eat the traditional fresh foods of their ancestral past: kangaroos, birds, crocodiles, turtles, shellfish, yams, figs, yabbies (freshwater crayfish), freshwater bream and bush honey. At the experiment’s conclusion, the results were spectacular, but not altogether unexpected given what known about Paleo diets, even then. The average weight loss in the group was 16.5 lbs; blood cholesterol dropped by 12 % and triglycerides were reduced by a whopping 72 %. Insulin and glucose metabolism became normal, and their diabetes effectively disappeared.

The first recent study to experimentally test contemporary Paleo diets was published in 2007 (5). Dr. Lindeberg and associates placed 29 patients with type 2 diabetes and heart disease on either a Paleo diet or a Mediterranean diet based upon whole grains, low-fat dairy products, vegetables, fruits, fish, oils, and margarines. Note that the Paleo diet excludes grains, dairy products and margarines while encouraging greater consumption of meat and fish. After 12 weeks on either diet blood glucose tolerance (a risk factor for heart disease) improved in both groups, but was better in the Paleo dieters. In a 2010 follow-up publication, of this same experiment the Paleo diet was shown to be more satiating on a calorie by calorie basis than the Mediterranean diet because it caused greater changes in leptin, a hormone which regulates appetite and body weight.

In the second modern study (2008) of Paleo Diets, Dr. Osterdahl and co-workers (7) put 14 healthy subjects on a Paleo diet. After only three weeks the subjects lost weight, reduced their waist size and experienced significant reductions in blood pressure, and plasminogen activator inhibitor (a substance in blood which promotes clotting and accelerates artery clogging). Because no control group was employed in this study, some scientists would argue that the beneficial changes might not necessarily be due to the Paleo diet. However, a better controlled more recent experiments showed similar results.

In 2009, Dr. Frasetto and co-workers (1) put nine inactive subjects on a Paleo diet for just 10 days. In this experiment, the Paleo diet was exactly matched in calories with the subjects’ usual diet. Anytime people eat diets that are calorically reduced, no matter what foods are involved, they exhibit beneficial health effects. So the beauty of this experiment was that any therapeutic changes in the subjects’ health could not be credited to reductions in calories, but rather to changes in the types of food eaten. While on the Paleo diet either eight or all nine participants experienced improvements in blood pressure, arterial function, insulin, total cholesterol, LDL cholesterol and triglycerides. What is striking about this experiment is how rapidly so many markers of health improved, and that they occurred in every single patient.

In an even more convincing recent (2009) experiment, Dr. Lindeberg and colleagues (2) compared the effects of a Paleo diet to a diabetes diet generally recommended for patients with type 2 diabetes. The diabetes diet was intended to reduce total fat by increasing whole grain bread and cereals, low fat dairy products, fruits and vegetables while restricting animal foods. In contrast, the Paleo diet was lower in cereals, dairy products, potatoes, beans, and bakery foods but higher in fruits, vegetables, meat, and eggs compared to the diabetes diet. The strength of this experiment was its cross over design in which all 13 diabetes patients first ate one diet for three months and then crossed over and ate the other diet for three months. Compared to the diabetes diet, the Paleo diet resulted in improved weight loss, waist size, blood pressure, HDL cholesterol, triglycerides, blood glucose and hemoglobin A1c (a marker for long term blood glucose control). This experiment represents the most powerful example to date of the Paleo diet’s effectiveness in treating people with serious health problems.

So, now that I have summarized the experimental evidence supporting the health and weight loss benefits of Paleo Diets, I would like to directly respond to the errors in the U.S. News and World Report article.

1. “Will you lose weight? No way to tell.”

Obviously, the author of this article did not read either the study by O’Dea (6) or the more powerful three month crossover experiment by Jonsson and colleagues (9) which demonstrated the superior weight loss potential of high protein, low glycemic load Paleo diets. Similar results of high protein, low glycemic load diets have recently been reported in the largest randomized controlled trials ever undertaken in both adults and children.

A 2010 randomized trial involving 773 subjects and published in the New England Journal of Medicine (8) confirmed that high protein; low glycemic index diets were the most effective strategy to keep weight off. The same beneficial effects of high protein, low glycemic index diets were dramatically demonstrated in largest nutritional trial, The DiOGenes Study (9), ever conducted in a sample of 827 children. Children assigned to low protein, high glycemic diets became significantly fatter over the 6 month experiment, whereas those overweight and obese children assigned to the high protein, low glycemic nutritional plan lost significant weight.

2. “Does it have cardiovascular benefits? Unknown.”

This comment shows just how uninformed this writer really is. Clearly, this person hasn’t read the following papers (1 – 6) which unequivocally show the therapeutic effects of Paleo Diets upon cardiovascular risk factors.

And all that fat would worry most experts.”

This statement represents a “scare tactic” unsubstantiated by the data. As I, and almost the entire nutritional community, have previously pointed out, it is not the quantity of fat which increases the risk for cardiovascular disease or cancer, or any other health problem, but rather the quality. Contemporary Paleo Diets contain high concentrations of healthful omega 3 fatty acids, monounsaturated fatty acids and long chain polyunsaturated fatty acids that actually reduce the risk for chronic disease (10-18).

3. “Can it prevent or control diabetes? Unknown.”

Here is another example of irresponsible and biased journalism which doesn’t let the facts speak for themselves. Obviously, the author did not read the study by O’dea (6) or Jonsson et al. (2) which showed dramatic improvements in type 2 diabetics consuming Paleo diets.

But most diabetes experts recommend a diet that includes whole grains and dairy products.

If the truth be known, in a randomized controlled trial, 24 8-y-old boys were asked to take 53 g of protein as milk or meat daily (19). After only 7 days on the high milk diet, the boys became insulin resistant. This is a condition that precedes the development of type 2 diabetes. In contrast, in the meat-group, there was no increase in insulin and insulin resistance. Further, in the Jonsson et al. study (2) milk and grain free diets were shown to have superior results in improving disease symptoms in type 2 diabetics.

4. “Are there health risks? Possibly. By shunning dairy and grains, you’re at risk of missing out on a lot of nutrients.”

Once again, this statement shows the writer’s ignorance and blatant disregard for the facts. Because contemporary ancestral diets exclude processed foods, dairy and grains, they are actually more nutrient (vitamins, minerals and phytochemicals) dense than government recommended diets such as the food pyramid. I have pointed out these facts in a paper I published in the American Journal of Nutrition in 2005 (13) along with another paper in which I analyzed the nutrient content of modern day Paleo diets (12 ). Most nutritionists are aware that processed foods made with refined grains, sugars and vegetable oils have low concentrations of vitamins and minerals, but few realized that dairy products and whole grains contain significantly lower concentrations of the 13 vitamins and minerals most lacking in the U.S. diet compared to lean meats, fish and fresh fruit and vegetables (12, 13).

Also, if you’re not careful about making lean meat choices, you’ll quickly ratchet up your risk for heart problems”.

Actually, the most recent comprehensive Meta analyses do not show fresh meat consumption whether fat or lean to be a significant risk factor for cardiovascular disease (20-25), only processed meats such as salami, bologna, bacon and sausages (20).


1. Frassetto LA, Schloetter M, Mietus-Synder M, Morris RC, Jr., Sebastian A: Metabolic and physiologic improvements from consuming a paleolithic, hunter-gatherer type diet. Eur J Clin Nutr 2009.

2. Jönsson T, Granfeldt Y, Ahrén B, Branell UC, Pålsson G, Hansson A, Söderström M, Lindeberg S. Beneficial effects of a Paleolithic diet on cardiovascular risk factors in type 2 diabetes: a randomized cross-over pilot study. Cardiovasc Diabetol. 2009;8:35

3. Jonsson T, Granfeldt Y, Erlanson-Albertsson C, Ahren B, Lindeberg S. A Paleolithic diet is more satiating per calorie than a Mediterranean-like diet in individuals with ischemic heart disease. Nutr Metab (Lond). 2010 Nov 30;7(1):85

4. Jonsson T, Ahren B, Pacini G, Sundler F, Wierup N, Steen S, Sjoberg T, Ugander M, Frostegard J, Goransson Lindeberg S: A Paleolithic diet confers higher insulin sensitivity, lower C-reactive protein and lower blood pressure than a cereal-based diet in domestic pigs. Nutr Metab (Lond) 2006, 3:39.

5. Lindeberg S, Jonsson T, Granfeldt Y, Borgstrand E, Soffman J, Sjostrom K, Ahren B: A Palaeolithic diet improves glucose tolerance more than a Mediterranean-like diet in individuals with ischaemic heart disease. Diabetologia 2007, 50(9):1795-1807.

6. O’Dea K: Marked improvement in carbohydrate and lipid metabolism in diabetic Australian aborigines after temporary reversion to traditional lifestyle. Diabetes 1984, 33(6):596-603.

7. Osterdahl M, Kocturk T, Koochek A, Wandell PE: Effects of a short-term intervention with a paleolithic diet in healthy volunteers. Eur J Clin Nutr 2008, 62(5):682-685.

8. Larsen TM, Dalskov SM, van Baak M, Jebb SA, Papadaki A, Pfeiffer AF, Martinez JA, Handjieva-Darlenska T, Kunešová M, Pihlsgård M, Stender S, Holst C, Saris WH, Astrup A; Diet, Obesity, and Genes (Diogenes) Project. Diets with high or low protein content and glycemic index for weight-loss maintenance. N Engl J Med. 2010 Nov 25;363(22):2102-13

9. Papadaki A, Linardakis M, Larsen TM, van Baak MA, Lindroos AK, Pfeiffer AF, Martinez JA, Handjieva-Darlenska T, Kunesová M, Holst C, Astrup A, Saris WH, Kafatos A; DiOGenes Study Group. The effect of protein and glycemic index on children’s body composition: the DiOGenes randomized study. Pediatrics. 2010 Nov;126(5):e1143-52

10. Cordain L. Saturated fat consumption in ancestral human diets: implications for contemporary intakes. In: Phytochemicals, Nutrient-Gene Interactions, Meskin MS, Bidlack WR, Randolph RK (Eds.), CRC Press (Taylor & Francis Group), 2006, pp. 115-126.

11. Cordain L, Miller JB, Eaton SB, Mann N, Holt SH, Speth JD. Plant-animal subsistence ratios and macronutrient energy estimations in worldwide hunter-gatherer diets.Am J Clin Nutr. 2000 Mar;71(3):682-92.

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

13. Cordain L, Eaton SB, Sebastian A, Mann N, Lindeberg S, Watkins BA, O’Keefe JH, Brand-Miller J. Origins and evolution of the Western diet: health implications for the 21st century. Am J Clin Nutr. 2005 Feb;81(2):341-54.

14. Kuipers RS, Luxwolda MF, Dijck-Brouwer DA, Eaton SB, Crawford MA, Cordain L, Muskiet FA. Estimated macronutrient and fatty acid intakes from an East African Paleolithic diet. Br J Nutr. 2010 Dec;104(11):1666-87.

15. Ramsden CE, Faurot KR, Carrera-Bastos P, Cordain L, De Lorgeril M, Sperling LS.Dietary fat quality and coronary heart disease prevention: a unified theory based on evolutionary, historical, global, and modern perspectives. Curr Treat Options Cardiovasc Med. 2009 Aug;11(4):289-301.

16. Cordain L, Eaton SB, Miller JB, Mann N, Hill K. The paradoxical nature of hunter-gatherer diets: meat-based, yet non-atherogenic. Eur J Clin Nutr. 2002 Mar;56 Suppl 1:S42-52

17. Cordain L, Watkins BA, Florant GL, Kelher M, Rogers L, Li Y. Fatty acid analysis of wild ruminant tissues: evolutionary implications for reducing diet-related chronic disease. Eur J Clin Nutr. 2002 Mar;56(3):181-91

18. Carrera-Bastos P, Fontes Villalba M, O’Keefe JH, Lindeberg S, Cordain L. The western diet and lifestyle and diseases of civilization. Res Rep Clin Cardiol 2011; 2: 215-235.

19. Hoppe C, Mølgaard C, Vaag A, Barkholt V, Michaelsen KF. High intakes of milk, but not meat, increase s-insulin and insulin resistance in 8-year-old boys. Eur J Clin Nutr. 2005 Mar;59(3):393-8.

20. Micha R, Wallace SK, Mozaffarian D. Red and processed meat consumption and risk of incident coronary heart disease, stroke, and diabetes mellitus: a systematic review and meta-analysis. Circulation. 2010 Jun 1;121(21):2271-83

21. Micha R, Mozaffarian D. Saturated fat and cardiometabolic risk factors, coronary heart disease, stroke, and diabetes: a fresh look at the evidence. Lipids. 2010 Oct;45(10):893-905. Epub 2010 Mar 31.

22. Mozaffarian D, Micha R, Wallace S. Effects on coronary heart disease of increasing polyunsaturated fat in place of saturated fat: a systematic review and meta-analysis of randomized controlled trials. PLoS Med. 2010 Mar 23;7(3):e1000252.

23. Siri-Tarino PW, Sun Q, Hu FB, Krauss RM. Saturated fatty acids and risk of coronary heart disease: modulation by replacement nutrients. Curr Atheroscler Rep. 2010 Nov;12(6):384-90.

24. Siri-Tarino PW, Sun Q, Hu FB, Krauss RM. Saturated fat, carbohydrate, and cardiovascular disease. Am J Clin Nutr. 2010 Mar;91(3):502-9

25. Siri-Tarino PW, Sun Q, Hu FB, Krauss RM. Meta-analysis of prospective cohort studies evaluating the association of saturated fat with cardiovascular disease. Am J Clin Nutr. 2010 Mar;91(3):535-46

*Conventional Wisdom

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