Today, 01:19 PM
I am type A, I did pretty good on a mostly vegetarian diet but I do much better on paleo.
I don't think that the blood type is a fool proof indicator of what your diet should be, but it may very well be that people with certain blood types tend to be able to handle certain types of foods better than others because the tend to come from certain groups of people who were exposed to those foods. So it could be an indicator of what type of foods you can handle, but it might not work for everybody.
Ultimately I think that the healthiest diet goes back to what our ancestors ate a long time ago. But I think what happened is that over time, as we developed agriculture and such some humans were exposed to grains or dairy and some groups of people are more evolved to eat these things than others. I do ok eating vegetables, fruits, nuts, grains, dairy and occasional fish, but I do much better eating wild or pastured meats and vegetables and fruit. I think pretty much everybody runs more optimally on wild or pastured meats, vegetables and fruits, but some people are able to handle grains and dairy better than others.