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Should smoking be prohibited? Arguments 1. Smoking should be prohibited, for the World Health Organization points on that diseases linked to smoking kill at least 2 500 000 people each year. 2. Scientific research had shown that the risk of veloping lung cancer increases with the number of cigarettes smoked per day and the duration of the smoking habit, and it diminishes with the cessation of smoking. 3. Smoking not only leads to lung cancer, but many other diseases such as heart attacks, sore throat, headache, chronic bronchitis~, pulmonary emphysema~, etc. 4. Smoking is not only harmful to the smoker himself , but also results in the deaths of nonsmokers. Statistics show that passive smoking is causing 3 000 to 5 000 lung cancer deaths a year among American non-smokers. 5. An American scientist estimated that smokers who average a package a day for 20 years will lose about eight years of their lives. 6. Smoking is an expensive habit, for a smoker who consumes 10 cigarettes a day will have to spend at least 40 yuan a month. 7. Smoking has a bad impact on the psyche~ of the smokers. On the one hand, smokers realize the bad effects of smoking and are persuaded from time to time to give up smoking. On the other hand, many of them can hardly resist the temptation to smoke. Hence they often lose confidence in themselves. | 
