1. Patients with gastric cancer should eat more nutritious food after operation to prevent cachexia, such as silky fowl, pigeon, quail, beef, pork, rabbit meat, eggs, ducks, lobster sauce, tofu, silver carp, mandarin fish, swordfish, pond lice, herring, yellow croaker, squid and crucian carp.

2. Choose foods that improve immune function and prevent cancer, such as sweet potatoes, bean products, celery, garlic, carrots, tomatoes, gourds, mushrooms and fungus. People with nausea and vomiting should eat water shield, grapefruit, orange, loquat, millet, walnut, rose, carambola, fig, ginger, lotus root, pear, winter vegetables, mango, dark plum and lotus seeds.