Yesterday I read the news that a number of people in Canada are jointly suing their three tobacco companies for about RMB 17 billion for the harm caused to them by cigarettes. I remember the year when a similar lawsuit was filed in the United States seeking billions of dollars in damages. This reminds me, I have been a doctor for twenty years, I found that COPD (the end of the old slow branch) not only did not reduce, but feel more, in this living conditions are better and better today, medical conditions are very different from before today, in the disease spectrum has changed significantly today, this COPD has not seen the slightest reduction, does not this deserve our high attention, this and the Chinese people’s smoke and fire does not It has nothing to do with Chinese people’s smoke and fire. Now no matter from clinical medicine from preventive medicine from epidemiology, there are too many bases to prove the toxicity of cigarettes, why our country for smoke, for tobacco control is only flowing in the line style, stop in the mouth. World Health Organization statistics show that COPD (chronic obstructive pulmonary disease) is the only major fatal disease whose mortality rate is still increasing. According to statistics, the number of COPD patients in China is about 43 million, of which the prevalence rate of smokers (13.2%) is much higher than that of non-smokers (5.2%). There is no doubt that the curl of cigarettes in the hands is the number one culprit of COPD. Smoking makes many smokers suffer from lung disease, and those who inhale secondhand smoke are inadvertently dragged into the abyss of COPD. Studies have shown that high levels of passive smoking (40 hours of exposure to cigarette smoke per week for more than five years) increase the likelihood of developing COPD by an average of 48%. Since smoking can destroy your lungs so horribly, it is important that smokers quit and that the passive smokers around them have a responsibility to urge them to quit. Studies have shown that carbon monoxide levels in the blood return to normal 12 hours after quitting, lung function improves in 2 weeks-3 months, and the occurrence of cough and shortness of breath decreases and lung cilia return to normal function in 1-9 months. The Lancet, a leading medical journal, also published an article predicting that if risk factors such as smoking continue at current levels, 65 million people are expected to die from COPD in China over a 30-year period, while 26 million people could be saved from losing their lives to COPD if smoking and other risk factors are gradually and completely suppressed. I am still surrounded by too many people who slyly argue with me and talk about the benefits of smoking. Wake up!