Eating right for your blood type means following a recommended diet for your blood type to remain healthy. The blood type diet contains a list of foods that are suitable or harmful to people with blood type A, B, AB or O. The type A diet is mostly vegetarian, while the type O diet is a high-protein diet, according to AuthorityNutrition.com.
Dr. Peter D’Adamo popularized the blood type diet in 1996 through his book "Eat Right 4 Your Type," states AuthorityNutrition.com. According to the book, each of the four blood types contains ancestral genetic traits that determine the most suitable diet for people with that blood type. People with blood type A should follow a diet rich in plants and free of red meat, while those with blood type B should eat plants and meat, except chicken and pork. The type B diet eschews corn, wheat, lentils and tomatoes.
People with the AB blood type should follow a combination of the diets recommended for blood types A and B. The type O diet resembles a paleo diet and mainly consists of meat, poultry, fish and vegetables, states AuthorityNutrition.com. Scientific evidence to back these dietary recommendations is scarce, according to the Physicians Committee for Responsible Medicine.