Mental workers should choose food:
(1) carbohydrate-rich foods: such as rice, flour, millet, corn, red dates, longan, honey and so on. 
(2) Foods rich in high-quality protein: such as eggs, milk, fish, poultry, lean meat, and soybeans. 
(3) foods rich in unsaturated fatty acids: such as vegetable oil, sunflower seeds, pumpkin seeds, peanuts, watermelon seeds, walnuts, fish, shrimp and so on. 
(4) Foods rich in cephalins: such as porcine brain, sheep brain, and chicken brain, etc., foods rich in lecithin are mainly found in egg yolk, duck egg yolk, quail egg yolk, soybeans and their products. 
(5) Foods rich in vitamin A: such as animal liver, milk, eggs and carrots, leeks, kelp and fungus. 
(6) Foods rich in B vitamins: cereals, beans, peanuts, walnuts, sesame seeds, mushrooms, vegetables, eggs, milk, lean pork, viscera, yeast, eel and so on. 
(7) Foods rich in vitamin C: fresh dates, kiwi, citrus, lemon, grapefruit, cauliflower, green leafy vegetables, peppers, tomatoes, etc.