Auntie Li, who just retired this year, always felt a tickle in her throat and wanted to cough, but she thought it was chronic laryngitis and didn’t care until one morning when she woke up, she coughed up a mouthful of bloody sputum, which scared her and her family. “Fortunately, the tumor was found in time or in early stage, and there was no need for radiotherapy but only regular review. The family was busy for most of the month, but their worries were finally put down. Since 1985, lung cancer has become the number one killer of cancer worldwide, and the number of deaths from lung cancer each year is more than the total number of deaths from breast cancer, bowel cancer and prostate cancer combined. In cities like Hangzhou, the incidence and mortality rate of lung cancer has risen to the top of all cancers in China. According to Zhu Xinhai, deputy chief physician of the Department of Thoracic Surgery at Zhejiang Hospital, it is often thought that lung cancer is very closely related to smoking, but in recent years, the incidence of lung cancer among non-smoking middle-aged women has shown a trend of increasing year by year, and their common feature is that they spend a long time in the kitchen every day. Vegetable oils include soybean oil, canola oil and peanut oil, which are mainly composed of unsaturated fatty acids such as oleic acid, linolenic acid and linoleic acid; animal oils such as lard are mainly composed of saturated fatty acids. They have different boiling points, and traditional Chinese cooking methods such as stir-frying, stir-frying, frying and deep-frying will produce a large amount of short-chain aldehydes, ketones, hydrocarbons, alcohols and polycyclic aromatic hydrocarbons when heated above 220°C. These substances are mixed together to form the oil smoke. Housewives will produce a large amount of fumes when cooking every day, and if the kitchen is not well ventilated, the damage to the respiratory system is no less than smoking 2 packs of cigarettes. Although the content of PAHs in the composition of grease smoke is not as high as aldehydes and is not as toxic as direct burning cigarette smoke, it can penetrate deeper into the human respiratory system because it is dissolved in respirable droplets and can cause gynecological diseases such as cervical tumors. Because of its carcinogenicity, immunotoxicity, reproductive toxicity and mutagenicity, it is the most dangerous component of grease smoke. Another invisible killer in the kitchen should not be ignored is the various types of chemical cleaners, dishwashing, dishwashing, tile cleaning, cleaning hoods, etc., containing surfactants, detergents and other chemical additives, long-term exposure will damage the skin surface of the oily protective layer, causing corrosion and damage to the skin, residual detergents on the bowl, plate is a threat to the health of the family. It is more dangerous to mix different detergents together in order to enhance the decontamination effect, because some of these detergents are acidic and some are alkaline, and when mixed, chemical reactions may occur to produce irritating substances such as ammonia or ammonia water, and when ammonia water is mixed with detergents with bleaching effect, toxic chlorine ammonia gas is easily produced, which will lead to lung lesions after excessive inhalation, asthma, bronchitis Inhalation will lead to lung lesions, asthma, bronchitis, emphysema and other disorders, and in serious cases, pulmonary fibrosis. In modern society and civilization, it is almost impossible to refuse all “drugs”. How to keep the “home” this important fortress, effective preventive measures are: 1, minimize the generation of indoor cooking fumes, reduce the cooking of fried food; 2, the kitchen should be frequently ventilated, cooking with efficient hoods, improve air quality; 3, use hot water often wipe the stove cookware, reduce the use of various chemical The use of cleaning agents to keep the kitchen clean; 4, pay attention to routine medical examination, which helps to detect early tumors.