You should eat more vegetables, fruits, bean products and mushrooms, not too much meat. In short, the diet should be low in fat, animal protein, calories, salt, sugar, vitamins and cellulose. The World Health Organization has rated the top ten junk foods: 1, fried foods; 2. Pickled food; 3. Processing meat food; 4. biscuits; 5, soda cola food; 6. instant noodles; 7. Canned food; 8. Plum food; 9. Frozen dessert food; 10, barbecue food. It is best not to eat or eat less. The World Health Organization put forward six kinds of healthy drinks: green tea 1, red wine 2 (daily 100 ml), soybean milk 3, yogurt 4, bone soup 5 and mushroom soup 6. Better eat more. The effect of diet on health is a long-term result. As long as you insist on developing reasonable eating habits, don't stay up late, sleep for eight hours every day, open more windows and keep indoor air circulation. Your grandfather will live a long and healthy life.