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The Blood Type Diet Archives Volume 16


Posted By: Peter D'Adamo
Date: Monday, 28 May 2001, at 11:22 a.m.

In Response To: i wasa skeptic once too... (dillon, be Positive)

It really boils down to infectious diseases. Group O (with both anti-A and anti-B) were just better equipped to survive many of the parasites and flukes that were part of the early health scenarios. This changed as the infectious disease pattern altered when concentrated living conditions bred new challenges, such as cholera, typhus, plague and smallpox which seemed to give the advantage to group A. The mutations were probably there all the time, except that A and B were probably only present in small numbers (B still to this day). When I wrote ER4YT my thoughts were more along the line of AE Mourant, who saw the evolutionary changes in light of the increasing complexity of the antigens, from simple (H) to more complex (AB). Now it appears to be not just the antigens which influenced the numbers and predominance of blood groups, but also the antibodies (isohemagglutinins) as well.

BTW, many viral hemagglutinins are also ABO specific, which begs the question (perhaps never to be answered) of which blood type predominated with regard to mortality during the 1918-1919 Spanish influenza, which killed millions.

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