Foods that type O blood can eat: beef, mutton or venison; Trout, salmon, sardines, perch, cod, eggs, milk or tofu; Fresh cheese; Artichokes, garlic, radishes, lettuce, onions, parsley, sweet potatoes and pumpkins. Olive oil or linseed oil; Apples, grapefruit, grapes, pears, watermelons and peaches. It is recommended to eat a small amount: fat pork, ham and goose; Barracuda, caviar, smoked herring, smoked salmon, octopus, etc. ; Various types of cheese, ice cream, yogurt, whole milk, avocado, cabbage, mushrooms, olives, potatoes, white rice and so on. Corn oil or sunflower oil; Coconut, melon, orange, strawberry, mango and orange.

Foods that can increase weight: wheat and its by-products; White bread, sweet bread, flour cakes, pies, biscuits, corn, mung beans, lentils, cabbage and cauliflower.

Foods that can lose weight: marine shellfish, cabbage and spinach.