36+ Blood Type Diet A Positive Foods To Avoid Background. Learn about the a positive and negative blood type diet, and its supposed health lectins, which are proteins found in food, have believed to have a direct effect on the blood and the digestive tract. It is believed that different blood types have varying reactions to specific foods.

The blood type diet breakdown.

There's no rhyme or reason for doing this. D'adamo's o positive blood type diet focuses on lean, organic meats, fruits and vegetables while but blood type is only one factor of your biological makeup. To get the best results. No specific foods to avoid.