1.What’s wrong with smoking? There are thousands of chemicals and hundreds of harmful substances in tobacco, and there are 69 clear carcinogens, and there have been numerous clinical studies proving that smoking is closely related to lung cancer, respiratory disease, and the onset of cardiovascular and cerebrovascular disease and death. What I want to tell you is that the health risks of smoking are different from those of SARS, Ebola or AIDS, as smoking-related diseases have a chronic lagging process and are closely related to the smoking index. Smoking is associated with lung cancer, respiratory disease and cardiovascular disease in a dose-effect relationship, where the number of cigarettes smoked per day is multiplied by the number of years smoked. For example, if a smoker smokes more than 20 cigarettes per day, has smoked continuously for more than 20 years, and has a smoking index greater than 400, he or she is defined as a high-risk group for lung cancer. Lung cancer screening program is for smokers with smoking index greater than 400, and low-dose spiral CT can detect lung cancer at an early stage. 2.Will quitting smoking immediately affect my health? Quitting smoking will not affect your health, and it is good for your health! Smoking-related diseases include lung cancer, respiratory diseases, and cardiovascular diseases. Quitting smoking can reduce the risk of morbidity and mortality. Of course, if you are a heavy smoker and have been smoking for more than 30 years, you may experience withdrawal symptoms if you suddenly quit. Therefore, moderate and heavy smokers need to be prepared to quit smoking and need the help of a smoking cessation clinic doctor. 3, the elderly in the family has been smoking for a long time, suddenly quit smoking, the elderly will not get sick, after quitting smoking tumors have a basis? There are 69 types of carcinogenic and mutagenic substances in tobacco, and decades of smoking have become important carcinogenic factors. Of course, there may be other cancer-causing risk factors. Older smokers who smoke more than 20 cigarettes a day or have smoked for more than 20 years have a moderate to heavy dependence on nicotine, and some may experience withdrawal symptoms and maladaptive symptoms when they suddenly quit smoking. If there is a smoking cessation clinic doctor to guide the science of smoking cessation will avoid or reduce withdrawal symptoms. 4.Will quitting smoking cause weight gain? Will it also cause health risks? Since long-term smoking affects the function of many digestive enzymes in the digestive system, after quitting smoking, the function of these enzymes returns to normal and the digestive and absorption function improves significantly. If the process of quitting smoking does not pay attention to adjusting the diet, do not pay attention to the appropriate exercise body, especially some smokers friends with snacks instead of smoking habit action, resulting in increased intake and cause weight gain. 5.How to quit smoking? (1) “China’s Clinical Quit Guidelines (2015 Edition)” prepared by experts from the National Health and Family Planning Commission organization nationwide has been published. The guide details scientific methods for quitting smoking, including the 5A method and the 5R method, and we are organizing experts to analyze and promote it, giving personalized cessation guidance for different smokers’ smoking habits and smoking indices. (2) The World Health Organization has defined smoking as a nicotine dependence disease, and according to the degree of nicotine dependence, the smoking cessation clinic doctor will develop an individualized, tailor-made cessation method for you. For example, smokers with mild nicotine dependence can successfully quit smoking through individualized cessation programs and methods specified by the doctor. (3) Refusing to smoke the first cigarette after waking up is very important for successful cessation. It is recommended that heavy smokers wash up or take a morning walk directly after waking up to prolong the time to smoke the first cigarette as much as possible.