Therefore, if people with type A blood want to lose weight, they must be careful to eat beef and mutton, and it is best to replace them with fresh fish and chicken. Strengthen the intake of plant protein such as tofu and grain in slimming diet to supplement the deficiency of protein in the body. If people with type A blood want to lose weight, they must be careful to eat beef and mutton, and it is best to replace them with fresh fish and chicken. Suggested food: bass, carp, 3 eggs a week, natural yogurt, grape seed oil and linseed oil, radish, spinach, lemon and peach. Eat a small amount: all meat, caviar, crayfish, all kinds of cheese, whole milk and ice cream, bananas, oranges, papaya. Diet food: olive oil, soybeans, green leafy vegetables and pineapples. Tip: Blood type diet was put forward by Peter DeDamon. Peter Damo is a famous naturopathic doctor in Connecticut. Elected as 1990 naturopath by American Natural Medicine Association.