Food is a requirement as old as time. It is the reason why evolution took place and why there are so many living beings in the world today that are classified into categories as meat eating, fruit eating, plant eating, and, of course, those who eat a little of everything. Over the years, it has been found that different types of blood groups have different acceptance levels with regard to the many different kinds of food in the world today. Some food is good for us, while other foods are not easily digested by certain blood types. Your blood type is a likely reason why you can digest various types of food, while some types just don't agree with you. There is a little skepticism to this theory, but on the whole, it is widely accepted that there is some meat to this matter. Blood types and food do go hand in hand.