Dear teachers and students:
Hello everyone!
May 3 1 quietly came to our side, this is not an ordinary day, this is World No Tobacco Day! Students, do you know the harm of smoking to human body? A large number of scientific research data have already proved that smoking is extremely harmful to human health. All tobacco contains toxins, which can lead to various fatal and disabling health problems; The risk of smokers suffering from cancer, especially lung cancer, heart disease, emphysema and other fatal diseases will increase significantly. However, just today last year, a recent survey on teenagers' use of tobacco showed that more than 20% of junior high school students in China had tried smoking, and nearly 92% of students thought that smoking would definitely harm their health, but 22% of boys and 4% of girls still said that they might or would definitely smoke in the future. Look at some dirty corners of our evil campus, where cigarette butts are everywhere. It can be seen that even our purest campus is becoming more and more impure, and active and passive smoking of middle school students has become a problem that cannot be ignored.
According to the analysis, tobacco contains about 1200 compounds, most of which are toxic to human body, especially nicotine, which is particularly harmful. Nicotine in one cigarette can poison a mouse, and nicotine in 20 cigarettes can poison a cow. If a person smokes 20 to 25 cigarettes a day, he will inhale 50 to 70 milligrams of nicotine, which can cause death. It is only because they are gradually inhaled that the human body has a certain detoxification ability and is spared.
Tobacco contains many carcinogens, in addition, there are many carcinogens and ciliated toxins that can reduce the body's ability to expel foreign bodies. These poisons attach to the tiny particles of cigarette smoke, reach the alveoli, and deposit there, strengthening each other. As a result, the carcinogenic effect is greatly enhanced. People who smoke more than 10 cigarettes a day have a lung cancer mortality rate 2.5 times that of non-smokers. In addition, smoking can also cause laryngeal cancer, oral cancer, nasopharyngeal cancer, esophageal cancer, pancreatic cancer, bladder cancer and so on.
At present, there are an average of 40 million cases in the world every year, and 1 1000 deaths are related to tobacco every day. As experts say, tobacco is a product that will kill consumers in normal use, and tobacco epidemic is a ruthless public health disaster for both the country and society.
When tobacco companies in developed countries try their best to sell cigarettes to China and developing countries because of their own restrictions and censures, and entice young people to smoke foreign cigarettes, we young people should never "take the wrong boat". In order to make people aware of the dangers of smoking, governments all over the world are sparing no effort to publicize that smoking is harmful to health. In China, there are regulations prohibiting cigarette advertising, and the United Nations designated May 3rd1as World No Tobacco Day. The purpose is to create a fresh, environmentally friendly and green "global village" and make the living environment of all mankind healthier and better.
After listening to the above, I believe everyone should have their own understanding. Many teenagers don't know much about it now, so they also developed the habit of smoking and even became addicted when they were students. This really deserves our attention. Every parent should also pay more attention to their children and never let them have such a habit.