Hi Hobotica,

I find the book "Eat right for your blood type" (Dr. Peter J. D'adamo) very helpful in selecting my food choice, even in following the Atkin's Diet. Check this book out and maybe you can find the missing links in your problem. According to the info in this book and from my experience, people with blood type O are the one who would respond best the high animal protein diet, while the type AB would fare better with a vegetarian one.

Hope this help.