Junk foods are foods that provide only a few calories and no other nutrients, or foods that provide more than the body needs and become redundant. The ten junk foods announced by the World Health Organization include: fried foods, pickled foods, processed meat (jerky, meat loaf, sausage, ham, etc.), cookies (excluding low-temperature baking and whole grain cookies), soda and cola beverages, convenience foods (mainly refers to instant noodles and puffed foods), canned foods (including fish, meat and fruit), plum preserves and dried fruit, frozen desserts Food products (ice cream, popsicles, ice cream, etc.), barbecue food. Do not think that junk food are imported or learned from abroad, we also have their own junk food, mainly: 1, pickled vegetables, salted meat, sauerkraut and other pickled products: pickled vegetables about 30% of the salt, easy to produce high blood pressure; a variety of pickled products contain a large number of nitrite, the pickling process produces a large number of mold and other microorganisms, damage to the digestive system mucosa and function. 2, soy sauce tofu: contains a lot of salt and mold, which is not good for hypertension. 3, deep-fried foods such as fritters and doughnuts: these foods contain saturated fatty acids and acrylamide and various harmful substances of the aromatic group, some experts say that eating a fritter is equivalent to the harm of smoking a cigarette. 4, bacon, bacon, dried fish, etc.: these foods contain a large amount of salt, preservatives, color enhancers, eaten to increase the burden on the liver and kidneys. 5, lamb skewers, barbecue: contains a large amount of carcinogenic substances – triphenyl tetrapropyl (one of the three major carcinogens). 6, brisket: all intestines, tripe and other animal offal, containing a large amount of cholesterol and saturated fatty acids, after eating seriously affect blood lipids. 7, instant noodles: no nutrition, unhealthy, containing carcinogenic substances, additives a lot. 8, plums, preserves, etc.: containing nitrite, high salt, preservatives, flavors and other damage to the liver. 9, boiling soup and shabu-shabu soup: long boiling, vitamin destruction, only protein and purine left, increasing the burden on the kidneys.