1, fried foods such foods are high in calories, containing high levels of fat and oxidized substances, often eaten easily lead to obesity; is the most dangerous food leading to hyperlipidemia and coronary heart disease. In the frying process, often produce a large number of carcinogenic substances. Studies have shown that people who eat fried food often have a much higher incidence of some cancers than those who do not eat or rarely eat fried food. 2. Canned foods Whether it is canned fruits or canned meats, the nutrients in them are heavily damaged, especially all kinds of vitamins are almost destroyed. In addition, canned products in the protein often denatured, so that its digestive absorption rate is greatly reduced, the nutritional value of a substantial “shrinkage”. Also, many canned fruits contain high levels of sugar, and liquid as a carrier to be ingested into the body, so that the absorption rate of sugar is greatly increased slightly cynical. 3, pickled foods in the pickling process, the need to put a lot of salt, which can lead to such food sodium content exceeds the standard, resulting in often eating pickled foods to increase the burden on the kidneys, the risk of hypertension increased. In addition, the process of curing food can produce a large amount of carcinogenic substances nitrosamines, resulting in an increased risk of malignant tumors such as nasopharyngeal cancer. In addition, because of the high concentration of salt can seriously damage the mucous membrane of the gastrointestinal tract, so people who often eat pickled foods, the incidence of gastrointestinal inflammation and ulcers is higher. 4. Processed meat foods (ham, etc.) These foods contain a certain amount of nitrite, so they may have the potential risk of causing cancer. In addition, due to the addition of preservatives, color enhancers and color preservatives, etc., it causes an increased burden on the human liver. Also, most of the products such as ham are high-sodium foods, which can lead to high salt intake, causing blood pressure fluctuations and kidney function damage. 5, fatty meat and animal offal food Although it contains a certain amount of high quality protein, vitamins and minerals, but fatty meat and animal offal food contains a lot of saturated fat and cholesterol, has been identified as the two most important dietary factors leading to heart disease. It is now clear that the long-term consumption of large amounts of animal offal food can substantially increase the risk of cardiovascular disease and malignant tumors (such as colon cancer, breast cancer). 6, cream products Regular consumption of cream products can lead to weight gain, and even elevated blood sugar and blood lipids. The consumption of cream cakes before meals, etc., will also reduce appetite. The high fat and sugar content often affects gastrointestinal emptying and even leads to gastroesophageal reflux. Many people have acid reflux, heartburn and other symptoms after eating cream products on an empty stomach. 7, instant noodles belong to the high salt, high fat, low vitamin, low mineral class of food. On the one hand, the high salt content increases the kidney load and raises blood pressure; on the other hand, it contains a certain amount of artificial fat (trans fatty acids), which has a considerable negative impact on cardiovascular. Plus contains preservatives and flavors, may have potential adverse effects on the liver and so on. 8, barbecue food contains strong carcinogenic substance triphenyl tetrapropyl. 9, frozen desserts, including ice cream, ice cream, etc. These foods have three major problems: because of the high content of cream, easily lead to obesity; because of high sugar, can reduce appetite; may also be because of the low temperature and stimulate the gastrointestinal tract. 10, dried fruit, plums and preserved foods contain nitrite, which can be combined with amines in the body to form potentially carcinogenic amines nitrite; containing additives such as flavors may damage the liver and other organs; containing high salt may lead to increased blood pressure and kidney burden.