According to the book, people with this blood type are considered to be omnivores, so they can eat a variety of foods. However, foods like corn, wheat, tomatoes, and peanuts can cause weight gain, fatigue, and hypoglycemia. Another food that people with this blood type should avoid is chicken. Even though it’s a lean meat, it can cause strokes and immune disorders in people with the B blood type. It’s better to substitute chicken with lamb, goat, or rabbit meat.