World No Tobacco Day, the 21st World No Tobacco Day, was launched by the World Health Organization. The theme of the day is “tobacco-free youth”, the slogan is “ban tobacco advertising and promotion, to ensure a tobacco-free youth good years”. If the following symptoms appear, you should be careful, the best to go to the hospital to see. 1, middle-aged men, smoking history of 800 years or more (algorithm: the number of cigarettes smoked per day multiplied by the number of years of smoking) 2, admission symptoms: the recent period of cough without obvious causes, mainly dry cough, irritating cough, not much sputum; or cough, cough sputum, morning cough sputum, occasionally found in the sputum with dark red blood. What’s more, vague pain in the chest appears recently for no reason. 3, to the hospital to check the chest X-ray, suggesting that there are lung shadows, occupancy. For tobacco, it is time to say goodbye to it. With the Olympics around the corner, some cities are building smoke-free cities, and many restaurants and hotels are starting to turn away people who swallow clouds and smoke. Last year, a 2007 version of China’s clinical smoking cessation guidelines (trial version) was also issued. Tobacco prevalence: The World Health Organization (WHO) compared the harm of smoking to that of SARS and the tsunami. The number of smokers worldwide is currently about 1.3 billion, and 4.9 million people die each year from tobacco-related diseases, accounting for 1/10 of all deaths, and the number is expected to rise to 10 million by 2030, with 7 million of these deaths occurring in developing countries, accounting for 1/6 of all deaths. tobacco-related deaths now account for the largest number of deaths worldwide, and by 2025 the total number of deaths will exceed that of tuberculosis, malaria birth and perinatal complications, and AIDS combined. China is the world’s largest producer, consumer, and victim of tobacco, with 350 million smokers, and 1 million deaths from tobacco-related diseases each year, more than the combined number of deaths from AIDS, tuberculosis, traffic accidents, and suicide, accounting for 12 percent of all deaths, and expected to rise to 33 percent by 2020. If current smoking conditions are not effectively controlled, the number of related deaths will increase to 2 million by 2025 and 3 million by 2050. Between now and 2050, 100 million Chinese will die from tobacco-related diseases, half of whom will die between the ages of 35 and 60, representing a loss of 20 to 25 years of life. 2002, the third national smoking epidemiological survey, the current smoking rate of people over 15 years of age in China is 35.8%, of whom 66% are men and 3.1% are women. Smoking and disease relationship: smoking-related diseases and lesions include: hypertension, coronary heart disease, stroke, peptic ulcer, cancer (lung, lip, mouth, nose, throat, esophagus, stomach, liver, kidney, bladder, pancreas, cervix), chronic obstructive pulmonary disease, asthma, thrombo-occlusive vasculitis, impotence, aortic aneurysm, peripheral vascular disease, granulocytic leukemia, pneumonia, cataract, Crohn’s disease, hip fracture periodontal disease. According to surveys, chronic obstructive pulmonary disease accounts for 45% of smoking deaths, lung cancer accounts for 15%, esophageal cancer, stomach cancer, liver cancer, stroke, coronary heart disease and tuberculosis each account for 5% to 8%. Benefits of quitting smoking – better to quit than not to quit, and better to quit early than to quit late! There are benefits to quitting at any age. quitting before age 30 can reduce the risk of lung cancer by 90%. Five years after quitting, the risk of oral and esophageal tumors due to smoking is reduced by half. The risk of heart disease decreases even more rapidly after quitting, with smoking-related deaths halved within 1 year of quitting and the absolute risk similar to that of never-smokers within 15 years. A British prospective follow-up cohort study found that smokers died on average about 10 years earlier than nonsmokers, and that quitting at age 60, 50, 40, or 30 years gained life expectancy of about 3, 6, 9, or 10 years, respectively.