According to D'Adamo, proteins in certain foods called lectins can bind to your blood type antigen and make your blood stick together. This results in fatigue, headaches, digestive...

Those with type O blood should choose high-protein foods and eat lots of meat, vegetables, fish, and fruit but limit grains, beans, and legumes. To lose weight, seafood, kelp, red meat, broccoli, spinach, and olive oil are best; wheat, corn, and dairy are to be avoided.

The idea behind the blood type diet is that eating foods with lectins (a type of protein) incompatible with a person's blood type can cause blood cell clumping, called agglutination, and result in health problems such as heart or kidney disease or cancer.

The list of foods to eat more of includes green vegetables, eggs, certain meats, and low-fat dairy. AB blood type diet. Foods to focus on for this blood type group include tofu, seafood, dairy ...

Among the most adaptable and wholesome foods available for the blood type diet of B-positive individuals are beans, peas, and lentils. They often include healthy lipids and soluble and insoluble fiber, contain low fats, and have a significant amount of beneficial minerals like folate, iron, potassium, and magnesium.