tag:blogger.com,1999:blog-66806653899907647.post1580662206453991757..comments2023-08-06T06:16:18.986-05:00Comments on Natural Sports Medicine Blog: A Critical Examination Of Blood Type DietsDr. Todd Narsonhttp://www.blogger.com/profile/15449532757964647891noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-66806653899907647.post-8406985109617668272013-01-11T10:13:26.087-05:002013-01-11T10:13:26.087-05:00I think your comments are very appropriate and bri...I think your comments are very appropriate and bring up a great point. The "caveman" diet wasn't written in stone because of their general nomadic life-style. They roamed with their food sources. Veggies and fruit would grow in different regions at different times of the year, animals would migrate with their primary food sources and the caveman would do the same. As caveman broke off into various regions, several variations of the "paleo diet" would emerge as different foods were available in different regions of a continent. So there is some variation. <br /><br />However grains were a starvation food only consumed in times of desperation. It's not something that 99.8% of Paleolithic people are for out entire genetic time on earth. Combine this with the fact that grains have substances to prevent absorption in the digestive tract (so they can make it through an animals digestive tract, be pooped out and then sprout to grow the next generation of plant species, makes them a food we shouldn't consume today. <br /><br />But yes, the diet of a caveman did vary with the season and locations. But overall, is MUCH MUCH different that what we see in most societies today...<br /><br />Dr. Todd Narsonhttps://www.blogger.com/profile/15449532757964647891noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-25709178678028476752013-01-10T16:41:09.945-05:002013-01-10T16:41:09.945-05:00I appreciate this critique of the blood type diet,...I appreciate this critique of the blood type diet, it feels very fair and balanced, and based on science. Such a refreshing approach. <br /><br />I think it is easy for us to look for nutritional information in absolute terms. My issue with this diet is the idea that there are foods that are "all good" or "all bad" for you. Even if our ancestors ate certain foods, and maybe those are the easiest for us to process, humans of all blood types have been evolving over hundreds of years and I have a hard time believing that nutrition has to be a rigid formula in order to be considered natural or healthy. When you see healthy 100 year olds being interviewed, usually they describe their eating habits in a very simple way. I haven't heard any 100 year old say that they got to that age in good health because of something like the blood type diet. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-81692372537451848162013-01-05T16:49:30.065-05:002013-01-05T16:49:30.065-05:00I've always been a little skeptical of the blo...I've always been a little skeptical of the blood type diet, but that hasn't stopped me from loosely implementing it because I have leaky gut. It's really frustrating trying to find food that works. The guidelines from the blood type diet made it a little easier. Many of the foods on the avoid list had a negative effect on me. Lentils and red beans really bothered me where other beans didn't noticeably bother me. Your points make a lot of sense; but what about lectins? You don't address the discussion of lectins in D'Adamo's book which made a lot of sense to me. Thank you.Jesshttps://www.blogger.com/profile/03729112056438587301noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-24614588449176210752011-07-10T13:41:45.588-05:002011-07-10T13:41:45.588-05:00Based on anthropological research, our genes are l...Based on anthropological research, our genes are linked back to about 4.5 million years ago (the last 200,000 of which are virtually unchanged and the last 40,000 the exact same). During none of this time were humans ever vegan or vegetarian. <br /><br />For that matter, it's well known in (for those that actually study it rather than listen to hearsay) that chimps are not vegan or vegetarian or Fruitarian, they are omnivore. During the dry season they eat meat, small antelope and as pointed out above, other small monkeys. They've been well known for using sticks as tools to retrieve ants and termites from mounds. So the argument that we are supposed to only eat vegetarian or vegan is absolutely ridiculous.Dr. Todd Narsonhttps://www.blogger.com/profile/15449532757964647891noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-22600753293138854932011-07-10T13:04:38.410-05:002011-07-10T13:04:38.410-05:00Stephanie, Chimps could not at all be described as...Stephanie, Chimps could not at all be described as vegan. Although they primarily eat fruit, they also eat meat, including other primates, birds and eggs, and insects.Andynoreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-55185358948727263672010-11-20T15:29:02.946-05:002010-11-20T15:29:02.946-05:00Interestingly, I'm sure we all remember from h...Interestingly, I'm sure we all remember from high school and learning how chimps, apes use a stick as a tool to get termites & ants out of their respective mounds. This is one instance that shows apes and chimps aren't vegans.<br /><br />The eat for your blood type is interesting as it seems that your lineage should influence what fuels your physiology. I always tell people if they want to be healthy, research their ancestry and eat like they did. But there ends up being some commonalities when you go back far enough. <br /><br />Based on the credibility of the research, I'd have to go with Loren Cordain on this. With his history of research and the too numerous to mention..times he's been published in this area really goes way beyond that of the blood type diet.<br /><br />The fact that the blood type diet doesn't work for a large % of the people that try it is quite telling. <br /><br />When eating with paleo principles, everyone that dose it seems to respond quite favorably.<br /><br />Love the discussion. You guys really make some outstanding points.<br /><br />Dr. TDr. Todd Narsonhttps://www.blogger.com/profile/15449532757964647891noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-58426629369573072002010-11-19T20:15:04.581-05:002010-11-19T20:15:04.581-05:00I agree with "V" above,
I am aware that...I agree with "V" above, <br />I am aware that blood type diet lacks scientific evidence, but it is definitely interesting. <br />I'm an A, and the foods recommended or not-recommended does really work better for me. <br />But most of all, chimpanzees and other apes are "A" and they happen to be basically "vegans". When "homos" started eating meat, I've read before that's when the "mutation" occurred for us to be more type O's and we were able to take a huge evolutionary step. <br />Well, I am not criticizing or anything, but I am just really curious. Doesn't this suggest that perhaps "some" parts of the BTD makes sense? <br /><br />Thanks!Aspiring Stephhttps://www.blogger.com/profile/16292620372839750369noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-38661841489376822852010-08-06T12:28:17.678-05:002010-08-06T12:28:17.678-05:00Hello again:
Possibly I will, in part, be answeri...Hello again:<br /><br />Possibly I will, in part, be answering my own question, but I have continued my reading on this subject since posing it earlier...<br /><br />Apparently there is a correlation between blood type and one's susceptibility to malaria. Researchers have found that malaria presents less severely, or there are fewer severe cases of this disease, in those of blood type O+.<br /><br />See: http://www.gnxp.com/blog/2007/10/malaria-and-blood-type.php<br /><br />If, as is supposed in Dr. Cordain's refutation of the "Eat Right For Your Blood Type" diet, blood type A is in fact the more ancient type, then it appears that proto-humans with type O+ may have had greater survivability in the face of malaria. I'm willing to hazard a guess that this mutation would have given them the edge needed to multiply their numbers and perhaps become the creature we recognize as fully human today. Perhaps it would be more accurate to say that O+ is the most ancient blood type of homo sapiens, but not of much earlier human-like beings. After all, we branched off from the ancestors of chimps and gorillas a very long time ago.<br /><br />Again, all thoughts are welcome. Thanks!Vhttps://www.blogger.com/profile/01588495668945930467noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-11033905133491078132010-08-06T07:58:07.225-05:002010-08-06T07:58:07.225-05:00I would first like to state that I am not a scient...I would first like to state that I am not a scientist, but I do not believe that one's diet ought to be influenced by one's blood type. Nevertheless, I would like to pose a question...<br /><br />You state that, "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."<br /><br />However, I note that Native Americans are overwhelmingly type O+ with some distribution of A+ in the more northern tribes. (see: http://anthro.palomar.edu/vary/vary_3.htm)<br /><br />It appears from this distribution map that Central and South American Indians are completely devoid of A or B, with O types approaching 100% of the population. <br /><br />I 'assume' that the distribution of A types arrived later than those of O, in successive waves of migration.<br /><br />Therefore I must ask if O is indeed more ancient than A, since these Native Americans are now thought to have arrived into the Americas at a much earlier date than the previously accepted 11,000 years or so. I have heard estimates of possibly upwards of 30,000 - 40,000 years ago.<br /><br />Thoughts?Vhttps://www.blogger.com/profile/01588495668945930467noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-52867042055914258662010-07-16T08:53:22.035-05:002010-07-16T08:53:22.035-05:00Yes, D'adamo got it wrong on the dates and evo...Yes, D'adamo got it wrong on the dates and evolution. But what you fail to mention is that he actually examined the different blood groups under the microscope and TESTED what foods/lectins caused the blood of the different types to agglutinate. And THAT builds the premise for his food recommendations. Either Cordain didnt fully read his book or he conveniently skipped that part.Unknownhttps://www.blogger.com/profile/10337921364509681664noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-56294497990786696082010-07-07T06:27:41.161-05:002010-07-07T06:27:41.161-05:00"Drive55" it's not the quantity of t..."Drive55" it's not the quantity of the research or scholarly articles, it's their accuracy. There are inaccuracies throughout with his references for simply the time line for how humans evolved, where they evolved from, etc.. Loren Cordain, PhD has over 300 articles published in human evolution & diet and is an authority on the subject. I think Dr. Cordain's article does quite enough to refute the facts of the blood type diet. As he pointed out, it will work for a certain percent of the population, but because of the holes in his science, it doesn't work for most or all.<br /><br />And to answer your question about "who pays me"??? My patients pay me to help them get results. <br /><br />I have to admit though, in theory The Blood Type diet did sounds nice. <br /><br />'nuff saidDr. Todd Narsonhttps://www.blogger.com/profile/15449532757964647891noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-13070886758563238932010-07-07T06:08:38.769-05:002010-07-07T06:08:38.769-05:00You use only 7 references (2 from the D'Adamos...You use only 7 references (2 from the D'Adamos) to disprove a book supported by over 120 scholarly articles and countless hours of the author's own research? Way to be thorough. Who's paying you to endorse their diet?TJhttps://www.blogger.com/profile/08203855821160972189noreply@blogger.comtag:blogger.com,1999:blog-66806653899907647.post-1191864386098528292010-06-04T11:42:54.131-05:002010-06-04T11:42:54.131-05:00Of course blood type diet sounds interesting but I...Of course blood type diet sounds interesting but I also agree there is no science according to that.V. lagrahttp://www.franklindrugcenter.com/viagra.htmlnoreply@blogger.com