Does the Eat Right for your Blood Type Diet Really Work? II am often asked what I think of the Blood Type Diet. It seems to help so many people yet others find it very frustrating to follow and limiting. The short answer: I don't think there is 4 diets on the planet, I think there are 7 billion diets for 7 billion people and we have to eat to our specific needs. I am allergic to most grains, soy, and peanuts yet D'adamo suggests that all Blood Type A's are best as vegetarian. What am I supposed to eat? Without enough protein that I tolerate well, I fear that I would have muscle wasting, digestive problems and hormone imbalance. Even though there is mention that this diet helps us follow our ancestors diet, I am not supposed to eat one of the most healthy Russian foods - cabbage. A Critical Examination Of Blood Type Diets - by Loren Cordain, Ph. D., Professor. The History And Characterization Of Blood Type Diets. ![]() ![]() Blood type diets were first popularized by Peter D’Adamo, a naturopathic physician, in his best selling 1. Eat Right 4 Your Type. The inspiration for Dr. D’Adamo’s book came from subjective clinical impressions of his father, James D’Adamo; also a naturopathic physician who first proposed this concept in his book, One Man’s Food is Someone Else’s Poison 1. As a member of Bastyr College’s first graduating class of naturopathic physicians in 1. Peter became interested in attempting to validate his father’s subjective and personal observations from reviews of the scientific and medical literature – thus the fundamental reason for Peter writing his hugely successful diet book. He advocates separate diets for people with one of the four most common blood types (A, B, O or AB), and has further subdivided his dietary recommendations into three arbitrary ancestral categories: . Highly beneficial. For each of the 1. If these nutritional recommendations sound somewhat complex to you, I had to re- read them about a dozen times to get the drift myself. ![]() Although I don’t want to get ahead of the game, for the observant reader, you may be curious to know how Dr. D’Adamo dreamed up this complex dietary system and if a long trail of experimental human clinical trials exist to support Peter’s recommendations? I, too, had to ask myself these same questions. D'Adamo believes that blood group O (. Accordingly, Peter believes that people with the O blood type had ancestors who were skillful hunters and whose diets were high in meat and animal proteins. Diet for O Positive Blood Type. Blood group O is considered to be the oldest and the most common of all blood types. The following article provides information about. What is normal blood sugar level? What is low/ high sugar level? How to measure sugar level? ![]() ![]() For modern people with the O blood type he advocates a high meat, low carbohydrate . Do these dietary recommendations ring a bell for you, or sound vaguely familiar? Keep this thought in mind, as it may well explain the lasting popularity of Peter’s first book. D’Adamo recommends a mainly vegetarian diet - the diet that he personally follows. However, more importantly he recommends that blood type A’s also avoid wheat and dairy (do these recommendations also sound familiar?) and replace meats with some ? AB Negative Blood Type Facts (AB+) 1. The Rarest Blood Type and Universal Plasma Donor. The nature of antigens present in the serum determines the blood type. Blood Glucose Testing People who eat a diet high in fructose are at increased risk of developing high blood pressure, or hypertension. The results of a study suggest that cutting back on. While this conversion chart for blood sugar levels is a good guideline, everyone's body responds differently. Work with your doctor to set realistic goals. Keep these recommendations in mind. Peter suggests that type B’s have evolved the most varied diet and can include both meats and dairy in their daily menu, but again should avoid wheat. Before we move on to the final blood type (AB) it should be noted that Dr. D’Adamo generally eschews highly processed foods (chips, pastries, candy, ice cream, snack food, fast food, etc.) for all blood groups – once again, does this not sound like another familiar dietary suggestion? Peter indicates that AB’s are a conglomeration of type A and type B blood types, and consequently their diets should reflect a mixture of the recommendations he makes for these blood groups. AB’s are therefore advised to eat meats, seafood and dairy, and to once again avoid wheat. One important note: in the past, type O Blood was given to virtually anyone except those with what was termed 'rare' Blood. Donors of Blood group O were. ![]() The Reality And The Science Of Blood Type Diets. The reality of Dr. D’Adamo’s book, Eat Right 4 Your Type, is that it has overwhelmingly become one of the sustained, best selling diet books of the past two decades, and continues to sell well on Amazon and other retail outlets – 1. Unfortunately, as I will shortly demonstrate, Dr. D’Adamo’s explanations for the health- promoting effects of his diet have little or nothing to do with ABO blood groups. His claims about the origins of human blood types and the dietary selective pressures which elicited the four common blood types are completely incorrect and have no basis in the current scientific literature. By critically examining the faulty concepts and evidence underlying this book, it becomes almost comical how Peter’s series of errors, incorrect assumptions and conclusions actually ended up with dietary recommendations that may have therapeutic value for about 6. The paradoxical nature of this book (bad science, pretty good dietary recommendations) helps to explain its lasting commercial success. Actual Origins of Human Blood Types. Peter’s suggestion that O is the original human blood type is incorrect. Studies in humans, chimpanzees and bonobos (a specific type of chimpanzee) show that alleles (different versions of genes) coding for the A blood type was actually the most ancient version of the ABO blood group, and was shared prior to the evolutionary split between chimpanzees and hominids five to six million years ago. Hence, Peter’s suggestion that blood type A appeared 1. B. C. Now, let’s play a little game of logic and apply the correct data to Peter’s reasoning that . These kinds of games of logic - although fun to play - more importantly underscore the fundamental and incorrect assumptions upon which Peter’s book is based. The O blood type split from A about 2. Peter. The only fact that Peter correctly deduced about the origin of human blood types was that AB was the youngest, but once again he completely missed the correct date, as it was actually about 2. Why does this matter and how does it affect his dietary theories? To begin with, even if we were to believe in Peter’s underlying assumptions that diets should be prescribed upon blood types, he would have to completely revamp his original recommendations. Type A’s should be eating a high protein, meat- based diet rather than the vegetarian fare he suggests. But what about type O’s? With the correct evolutionary information, should they now be eating a vegetarian menu? And what about type B’s and type AB’s – what should they now be eating? Most telling of the logical failings of Peter’s blood type diet is the observation that all four of the major blood types had evolved almost 2. Agricultural Revolution 1. Yet Peter would have us convinced that three of the four major blood groups only came into existence slightly before or after the Agricultural Revolution, and as a direct result from dietary selective pressures wrought by Neolithic food introductions. Because it works – but only for about 4. Remember that for blood type O, Peter advocates a high meat, low carbohydrate . If we look at the frequencies of the four major blood types for the entire world population, blood type O is by far the most frequently occurring version. It is found in 6. A (2. 1%), B (1. 6%) and AB (1- 3%)6. In the United States, the four blood type frequencies are O (4. A (4. 2%), B (1. 0%) and AB (4%)7. So you can see that Peter has essentially advocated a diet similar to the Paleo Diet for between 4. Quite simply, Peter’s diet works for about 4. References. ~D'Adamo, P. Eat Right 4 your Type: The Individualized Diet Solution to Staying Healthy, Living Longer & Achieving Your Ideal Weight. Putnam’s Sons, New York, 1. One man's food- -is someone else's poison. Marek Publisher, 1. Evolutionary dynamics of the human ABO gene. Sep; 1. 24(2): 1. Evolution of primate ABO blood group genes and their homologous genes. Apr; 1. 4(4): 3. 99- 4. Genetic characterization of the ABO blood group in Neandertals. The Distribution of the Human Blood Groups and other Polymorphisms. Oxford University Press, London, 1.
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