The principles of a healthy diet: a comprehensive and balanced diet structure, food diversification and single food in moderation, increased fiber intake, the importance of vitamins. Here again to introduce you to some of the health functions often eat beneficial health food, according to personal preferences and conditions can be moderate to eat more: a common health food red – tomatoes, red wine; yellow – red and yellow vegetables (such as carrots) Supplementary vitamin A; green – green tea, green vegetables; white – oat flour, oatmeal to lower cholesterol; black – black fungus can lower blood viscosity. Second, foods with immunomodulatory effects These foods can improve the immunity of the human body and prevent the occurrence of various infectious diseases caused by pathogenic organisms (viruses, bacteria, fungi, chlamydia, rickettsia, protozoa, etc.), such as colds, flu, tuberculosis, pneumonia, etc. More importantly, they have anti-cancer and anti-cancer effects. Mushrooms – Cordyceps (expensive), shiitake mushrooms (equivalent to the efficacy of Cordyceps, gout patients try to eat less) are immune boosting, anti-cancer effects. Bamboo shoots – bamboo shoots, asparagus. Garlic (patients with stomach diseases eat cooked garlic to reduce stimulation, should not eat more, more food affects the absorption of vitamin A and affects vision), onions. Cabbage, broccoli, cauliflower. Green tea. Third, the health hazards of “junk” food, try to avoid eating 1, fried, dry fried food: KFC, McDonald’s as the representative of the fast food, long-term eating, causing obesity, hyperlipidemia, accelerated aging, will also cause us to say “fire” evidence . 2, barbecue: the barbecue process produces a chemical benzo(pyrene) (also produced in the smoking process), is now internationally recognized as a strong carcinogen; 3, leftovers: a large number of bacteria in the human mouth through the chopsticks into the leftovers, and multiply in them. When consumed again, although after high temperature cooking, the bacteria are eliminated, but a large number of toxins produced by bacteria still remain in the food and enter the body, a small number of times will accumulate in the body to induce cancer, and a large number of toxins will cause acute food. 4. Convenience foods: canned food, puffed food, dried fruit, etc., contain a large number of food additives, including nitrate preservatives, which are converted into nitrites after entering the human body and are also strong carcinogens. In addition, a variety of sweeteners, color additives, etc. are harmful to the human body without a benefit.