Food in general -
I think there is something to the Blood type diet system..

Many of the foods listed as problematic for my type , do bother me when I eat them, once in while is OK , but if often, I just feel bloated and a bit off, when compared to the best foods listed for my type..

It is quite interesting to read and then see if the good/bad foods do apply for your blood type or not..
http://www.dadamo.com/
*many of his books in libraries & thrift stores if you prefer paper version*