The National Health Planning Commission pointed out in the White Paper on Health in China and the Report on the Status of Nutrition and Chronic Diseases among the Chinese Population (2015) that the number of chronic deaths among the population was 533/100,000 in 2012, accounting for 86.6% of the total number of deaths. Cardiovascular diseases, cancer and chronic respiratory diseases were the main causes of death, at 79.4% of the total deaths. Among them, the mortality rate of cancer was 144.3/100,000, and the top five causes of cancer death were lung cancer, liver cancer, stomach cancer, esophageal cancer, and colorectal cancer. Lung cancer has replaced liver cancer as the leading cause of death from malignant tumors in China. Lung cancer incidence and death in China have been continuously increasing, and the national lung cancer mortality rate has increased by 465% in the past three decades. The Annual Report on Tumor Registry of China 2014 shows that for men, lung cancer is the primary malignancy threat, and for women, lung cancer is the number two malignancy killer after breast cancer. The incidence and mortality rates of lung cancer in rural areas have shown a significant upward trend in the last five years. In the case of Beijing, the lung cancer mortality rate has continued to rise at an annual rate of 5,43% over the past two decades; the number of new cancer cases in Beijing is currently close to 50,000 per year, with 77.94 per 100,000 men and 49.59 per 100,000 women with lung cancer. Lung cancer surgery occupies the first place among thoracic surgeries in Beijing’s tertiary hospitals. Smoking + six “chemical” causes the high incidence of lung cancer China has more than 300 million smokers, of whom 28.1% are over 15 years old and 52.9% are men. The proportion of non-smokers exposed to secondhand smoke is 72.4%, and the number of people exposed to secondhand smoke is close to 740 million. Smoking and population aging, urban modernization, rural urbanization, industrialization, urbanization, environmental pollution, unhealthy lifestyles, and medical modernization are the six “chemical” leading to the high incidence of lung cancer. At present, the population over 60 years old in China reaches 220 million, accounting for more than 14% of the national population, and the proportion in Beijing, Tianjin, Shanghai and Guangzhou is close to or exceeds 20%, while at the same time, 60% of tumors and 70% of cancer deaths occur in people over 65 years old. Five “gases” haunt the body, and lung cancer is highly prevalent 1. The first “gas”: outdoor air pollution An important reason for the prevalence of lung cancer is outdoor air pollution. In Beijing, for example, the number of days with standard air quality was only 48% in 2014, and up to 52% of the weather days had substandard air quality, with the primary pollutant PM2.5 accounting for about 80% of the exceeded days. The heavily polluted weather – i.e. hazy weather – accounted for 16% of the total number of days in the year. Therefore, air pollution prevention and control has become a prominent issue facing the development of Beijing, and even the Beijing-Tianjin-Hebei region. Beijing has a population of 25 million, 25 million coal-fired, 5.8 million vehicles, 200 million square meters of construction sites, and 2,000 agricultural livestock farms, all of which generate large amounts of pollutant emissions. In addition, Beijing’s geographical and meteorological conditions are not conducive to the diffusion of air pollutants. Beijing is surrounded by mountains on three sides, forming a 1,000-meter-high curved barrier and a “skip-shaped” terrain, which makes it easy for pollutants to enter but not easy to exit. Beijing’s climate is more arid, with more than 20% of the year’s static wind days, which is likely to cause the accumulation of pollution and further aggravate air pollution. At present, Beijing has attached great importance to the management of air pollution. The Beijing-Tianjin-Hebei People’s Congress has made improving air quality a top priority for three consecutive years. The Beijing Municipal Government has also issued a management task book, the air pollution management tasks assigned to a number of relevant departments. 2, the second “gas”: tobacco smoke Tobacco smoke poses a huge threat to the health of residents, tobacco smoke contains thousands of chemicals, hundreds of harmful substances and 69 carcinogenic substances. Foreign statistics, the top three diseases caused by smoking deaths are chronic respiratory disease, coronary heart disease and lung cancer, while in our country lung cancer ranks second. Epidemiological studies have confirmed that smoking is the primary risk factor for lung cancer, and 87% of deaths due to lung cancer are caused by smoking. The mortality rate of lung cancer in male smokers is 8 to 20 times higher than that of nonsmokers. There is a dose-effect relationship between smoking and lung cancer, with an incidence rate of 227/100,000 for smoking 25 cigarettes or more per day, 139/100,000 for smoking 15-24 cigarettes per day, and 75/100,000 for smoking 1-14 cigarettes per day. China has many world firsts for tobacco in the world, including the world’s highest number of smoking-related deaths, a figure that exceeds that of India, Indonesia, Russia and the United States combined, which rank two to four. There are more than 300 million smokers in China, many of whom do not understand that smoking is harmful to health, especially because the health effects of smoking are lagging behind and some young people are not fully aware of the dangers of smoking. There is a lag between smoking and morbidity, with studies showing a thirty-year gap between the peak of smoking and the peak of mortality. Along with the high smoking rates in China in the 1970s and 1980s, China is now facing the morbid consequences of smoking. Particles in secondhand smoke are smaller in diameter than PM2.5 and can enter the alveoli and bloodstream, thereby threatening health, especially that of women and children. Non-smokers bravely say no to smokers, please go outside to smoke, because heavy passive smoking is equal to light active smoking. The third “gas”: kitchen fumes The relationship between kitchen fumes and the occurrence of lung cancer in non-smoking women is receiving increasing attention. CCTV’s “China on the tip of the tongue” has brought Chinese food to the world, but if you do not pay attention to kitchen fumes pollution, do not take a healthy way of cooking, not scientific use of smokers, kitchen fumes pollution will also bring harm to the health of residents. Cooking oil heated to 250 ℃ will appear a lot of oil smoke, and the traditional Chinese cooking oil temperature are above 260 ℃. Kitchen fumes contain benzo(a)pyrene, volatile nitrite, and heterocyclic known carcinogens. A paired study of lung cancer etiology in non-smoking women in Shanghai found that the greater the cooking fumes and the longer the exposure time, the greater the risk of lung cancer. Animal model studies, on the other hand, showed that lung cancer induced by grease pollution was mainly adenocarcinoma. In the daily kitchen cooking, you should keep the kitchen ventilation, more healthy cooking methods, reduce the barbecue at home, scientific installation and maintenance of fume hoods, and the use of fume hoods in the whole cooking process. 4, the fourth “gas”: indoor decoration pollution The fourth “gas” is the indoor air pollution brought about by indoor decoration. Chinese home, decoration, flooring, glue flooring, flowers, wallpaper, furniture bonding adhesives and most of them contain formaldehyde. For many Chinese people, they spend more time indoors than outdoors, so the pollution of the small indoor environment should be taken seriously. CCTV has reported the data released by the China Building Decoration Association on the sampling of home environment and interior decoration materials from 2013 to 2014 – China’s residential air quality exceeds the standard seriously! The average exceedance rate of formaldehyde is 70%-80%; the exceedance rate of TVOC (total volatile organic compounds) is 75%, with the highest value exceeding the national standard by 5 times. The degree of indoor air pollution than the degree of outdoor air pollution is 2 times – 3 times more serious, and in some serious cases even up to more than 100 times. More than 300 kinds of pollutants can be detected indoors, including more than 20 kinds of carcinogenic substances, and 68% of human diseases are related to indoor air pollution. The report also interviewed academician Zhong Nanshan, who said poor-quality decoration materials can lead to long-term pollution overload. The report pointed out that China’s children’s health care disease prevention and guidance center survey shows that the annual death of children due to upper respiratory tract infections caused by renovation pollution in China about two hundred and ten million, of which more than one million children under five years of age died from indoor air pollution. 5, the fifth “gas”: angry often sulking personality is called cancer personality, also known as C personality, pre-cancerous personality, manifested as tolerance, obedience, restraint, emotional instability, loneliness, depression, the pursuit of perfection, etc., in the same life environment is more likely to “meet ” life events, and are prone to more negative emotional experiences such as disappointment and sadness in similar unfortunate events. We advocate maintaining psychological balance, reasonably relieving there psychological tension and stress, and maintaining a good mood.