Tobacco smoke contains at least three dangerous chemicals: tar, nicotine and carbon monoxide. Tar is a mixture of several substances, which will be concentrated into a viscous substance in the lungs. Nicotine is an addictive drug, which is absorbed by the lungs and mainly affects the nervous system. Carbon monoxide reduces the ability of red blood cells to deliver oxygen to the whole body. A person who smokes/kloc-0.5 to 20 cigarettes a day is four times more likely to develop lung cancer, oral cancer or laryngeal cancer and die than a non-smoker. The risk of dying from esophageal cancer is four times higher than that of non-smokers. The probability of dying from bladder cancer is twice as high; The risk of dying of heart disease is twice as high. Smoking is the main cause of chronic bronchitis and emphysema, and chronic lung disease itself will increase the risk of pneumonia and heart disease, and smoking will also increase the risk of hypertension. The harm of smoking is well known. As many as 2.5 million people die from smoking every year in the world, and smoking is the first killer of mankind. Consciously developing the personal hygiene habit of not smoking is not only beneficial to health, but also the embodiment of noble public health ethics. In the smoking room, especially in the environment with closed doors and windows in winter, the room is not only filled with carbon dioxide exhaled by human body, but also with carbon monoxide exhaled by smokers, which will make people feel headache, burnout and work efficiency decline. More seriously, the contents of tar and nicotine in the cold smoke exhaled by smokers are 1 times higher than those in the hot smoke inhaled by smokers, and benzopyrene is 2 times higher, carbon monoxide is 4 times higher and ammonia is 50 times higher. Some data show that the incidence of lung cancer, laryngeal cancer and coronary heart disease in long-term smokers is 10-20 times, 6- 10 times and 2-3 times higher than that in non-smokers respectively. The incidence of circulatory system is 3 times higher, and the incidence of tracheitis is 2-8 times higher. A survey was conducted in 1000 families, and it was found that children under 0/6 years old in smoking families/kloc-had more respiratory diseases than children in non-smoking families. Among children under 5 years old, 33.5% of non-smoking families have respiratory symptoms, and 44.5% of smoking families have respiratory symptoms. Smoking is especially dangerous for women. If women who smoke are using oral contraceptives, they will increase the risk of heart disease and venous thrombosis of lower limbs. Pregnant women who smoke are prone to premature delivery and underweight, and the immune function of infants and young children is reduced, which is easy to get sick; According to statistics, the teratogenic rate of pregnant women's passive smoking infants has increased significantly. Smoking harms oneself and others, so we should consciously form a good health habit of not smoking. In the report "Smoking and Health" published by the Ministry of Health in China in 2006, we can see such data: in 2002, the smoking rate of people over 5 years old in China was 35.8%, of which the smoking rates of men and women were 66.0% and 3. 1% respectively. It is estimated that there are about 350 million smokers, accounting for one third of the world's smokers. Besides, smokers in China tend to be younger. Compared with the 1980s, the average age of starting smoking decreased from 22.4 to 19.7. China is not only a big country in tobacco production, but also a big country in tobacco consumption. China's tobacco production is equivalent to the sum of the other seven largest tobacco producing countries. China sells/kloc-0.6 trillion cigarettes every year, and China people consume about one-third of the world's cigarettes. If all the deaths caused by smoking-related diseases are counted, there are about 654.38+0 million deaths every year. At present, there are 1 1 billion smokers in the world, and it is estimated that 700 million people in China are directly or indirectly (passively) harmed by smoking. According to WHO statistics, as many as 4 million people die of smoking-related diseases every year, and one person dies of smoking-related diseases every second on average. If it is not controlled, by 2030, the number of people who die from smoking-related diseases will reach100000, and China will account for 2 million. According to the research report published by the US Centers for Disease Control and Prevention, from 1997 to 5438+0 in 2006, an average of 250,000 men and180,000 women in the United States died from smoking or passive smoking. It is estimated that smoking has reduced the average life expectancy of American adults by 14 years. Among the adults who died of smoking, 39.8% died of cancer, 34.7% died of vascular diseases and 25.5% died of respiratory diseases. According to the data analysis of 34,400 British male smokers tracked by the Royal Cancer Research Foundation for 40 years, there are about 40 fatal diseases caused by smoking, including oral cancer, esophageal cancer, laryngeal cancer, lung cancer, pancreatic cancer, gallbladder cancer and endometrial cancer. Smoking has become an urgent problem that seriously endangers health, harms human living environment, reduces people's quality of life and shortens human life. Therefore, the United Nations designated May 3 1 as the Global Quitting Smoking Day, and the World Health Organization regarded smoking as a plague in the 20th century. [Edit this paragraph] The harm of smoking to various organs 1. The smoke of mouth and throat smoke (especially the tar contained in it) is a carcinogen-that is, it can produce cancer in the tissues it contacts, so cancer may occur in any part of the smoker's respiratory tract. 2. Nicotine in the heart and arteries will accelerate the heartbeat and raise blood pressure. Tobacco smoke may be caused by carbon monoxide, which seems to promote the accumulation of atherosclerosis, which is the cause of many heart diseases. Heavy smokers are much more likely to die of a heart attack than non-smokers. 2. Esophagus Most smokers like to swallow a certain amount of cigarettes, so the digestive tract (especially the esophagus and pharynx) is at risk of cancer. 3. Fine hairs arranged on the airway of the lung usually exclude hydrogen foreign bodies from the lung tissue. These villi will constantly sweep the particles in the lungs into phlegm or mucus and excrete them. In addition to causing cancer, the chemicals in tobacco smoke will gradually destroy some villi and increase mucus secretion, so there are chronic diseases in the lungs and bronchitis is also prone to infection. Obviously, the "smoker's cough" is due to the impairment of the mechanical efficiency of lung cleaning, so the amount of sputum has increased. 4. Bladder bladder cancer may be caused by inhaling carcinogenic chemicals contained in tar, which are absorbed by the blood and then excreted through the urethra. [Edit this paragraph] The harm of smoking to the skin In fact, everyone knows the harm of smoking to the human body, but the harm of smoking to women, especially the harm of smoking to the skin, is more aging, wrinkled and grayer than that of non-smoking women. In particular, wrinkles in the corners of the eyes, upper and lower lips and corners of the mouth have increased significantly. Among them, smoking is more harmful to women's health than men's and will seriously affect the health of the next generation. Smoking will not only make facial skin wrinkle and yellow, but also have the same effect on the whole body skin. If you quit smoking, it may make your skin recover slowly. Yolanda Helfrich of the University of Michigan and others found that the number of cigarettes a person smokes every day and his age are directly related to the skin damage he experiences. The researchers studied 82 volunteers, of whom 465,438+0 smoked and 465,438+0 did not smoke. Their ages range from 22 to 9 1 year. The researchers observed and photographed the inside of their upper limbs to show the quality of their skin. The results show that smokers over 65 have more wrinkles than non-smokers. When the skin is exposed to the sun, mainly on the face, it will become rough, wrinkled and morbidly yellowish. Previous studies have also proved that smokers' facial skin will also be damaged like exposure to the sun. However, this study by Helfrich et al. also proves that smoking will also cause the same damage to the body skin protected by clothes as the facial skin, which will lead to the aging of the whole body skin and the loss of elasticity and luster. Smoking leads to contraction of subcutaneous blood vessels and decreased blood supply to the skin. This may lead to skin damage and aging. It is precisely because of smoking that the blood supply is reduced and the corresponding internal organs are damaged, such as arteries, kidneys and hearts. Another new study shows that smokers' arteries become hard because of tobacco poisoning, which leads to cardiovascular diseases such as elevated blood pressure. Even after they quit smoking, it takes 10 years for blood vessels to return to normal. Moreover, smoking is harmful to others, and people who inhale smoke are more harmful than those who are smoking. Harm others and yourself, smoking is harmful.