The importance of blood type for diet and lifestyle

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Jul 18, 2008
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Hi all,

I've been spending a lot of time researching diet lately and currently have a very clean diet; grain, dairy, sugar free for about 3-4 weeks. Before that i was gluten free for about 10 years with very low dairy consumption.

I've spent time looking at the Paleo, SCD and Fodmap diets. Currently my diet is closest to SCD although i can't stomach a lot of the ingredients they recommend like coconut (oil, flour or milk) or any of the nut flours (these kill me). I also can't touch any type of dairy or milk (even lactose free milk is an issue). Honey is also a big no no for me which is a shame because a lot of the tastier recipes for SCD use things like honey and coconut oil.

My concern is that these diets are overly restrictive but not everything they recommend is actually guaranteed to work for everyone. In the past i have eaten rice, gf bread and millet and these all were not an issue.

What im trying to do now is find my own diet based on elimination. I know alot of others have/are trying this too. I'm interested however to see if many have had success coming at this from a blood type perspective? Lots of online resources and books preach of the importance of following a diet and lifestyle along your blood type.

Any thoughts?
 
I have looked into this avenue and not found any solid evidence to show that what you eat matter depending upon your blood group.

On the contrary it seems that there is evidence that what is written about this diet is inaccurat. For example, where blood group A is now thought to be the oldest blood and not a recent mutation as the diet says.

http://sciencefocus.com/qa/which-human-blood-group-evolved-first

http://acsh.org/2014/01/eat-blood-type-diet-debunked/
http://www.sciencedaily.com/releases/2014/01/140115172246.htm

http://www.plosone.org/article/info:doi/10.1371/journal.pone.0084749
 
The blood type diet is based on pure idiocy and has been debunked by a peer reviewed scientific study. At least with SCD there is a bit of scientific theory that can be intellegently debated (though I am no fan of SCD either for the vast majority.) But the blood type diet doesn't have one iota of evidence or plausible theory to it. The father and son duo who came up with it were more interested in writing, selling, and promoting a book than any actual science or patient outcome. Even though I have countless criticisms of SCD, Gottschall has a possible theory, and has good intentions. Tread very carefully.
 
There was a Canadian study that refuted the blood type diet hypothesis (which I believe was started by a person without any medical background) http://www.nydailynews.com/life-style/health/blood-type-diet-total-bunk-study-article-1.1585491

Thinking about it, how could the blood type ever be influenced by diet? The most common blood types are the ones we learn in school (A, B, AB and O; there are many other classifications and actually various subgroups). The principle difference is which antigen (or if there is one at all) in the blood. The
A and B antigens are Immunoglobulin M antibodies that are produced by
B-cells. B-cells are lymphocytes and they create the antigens in a process called VDJ recombination which in itself is a combination of various synthesis steps via RNA transcripts. I just fail to see how any form of diet could have an affect on this process.
 
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