Yes, blood type can affect the kind of food you should eat. Type A should focus on eating vegetables, soy protein, and grains. Avoid dairy products. Type B should focus on low-fat dairy, meat, and produce. Avoid corn, wheat and lentils. Type O benefits most from lean meats, fish, and poultry. You can find out more about what type of food you should eat for your blood type on www.webmd.com